Claude Code transcript - page 7/12

tests/test_js_basic.py::test_mquickjs_js[mandelbrot.js-path0] XFAIL      [ 23%]
tests/test_js_basic.py::test_mquickjs_js[microbench.js-path1] XFAIL      [ 23%]
tests/test_js_basic.py::test_mquickjs_js[test_builtin.js-path2] XFAIL    [ 23%]
tests/test_js_basic.py::test_mquickjs_js[test_language.js-path3] XPASS   [ 23%]
tests/test_js_basic.py::test_mquickjs_js[test_rect.js-path4] XFAIL (...) [ 24%]

tests/test_js_basic.py::test_mquickjs_js[mandelbrot.js-path0] XFAIL      [ 84%]
tests/test_js_basic.py::test_mquickjs_js[microbench.js-path1] XFAIL      [ 88%]
tests/test_js_basic.py::test_mquickjs_js[test_builtin.js-path2] XFAIL    [ 92%]
tests/test_js_basic.py::test_mquickjs_js[test_language.js-path3] XPASS   [ 96%]
tests/test_js_basic.py::test_mquickjs_js[test_rect.js-path4] XFAIL (...) [100%]

     1→"""
     2→Parameterized pytest tests for JavaScript files.
     3→
     4→- Each .js file in tests/basic/ is run as a test case (should pass)
     5→- Each .js file in tests/compat/ are passing original mquickjs tests
     6→- Each .js file in tests/ (original mquickjs tests) is run with xfail (expected to fail)
     7→"""
     8→from pathlib import Path
     9→
    10→import pytest
    11→
    12→from mquickjs_python import JSContext
    13→
    14→
    15→def get_basic_test_files():
    16→    """Discover all .js files in tests/basic/ directory."""
    17→    basic_dir = Path(__file__).parent / "basic"
    18→    if not basic_dir.exists():
    19→        return []
    20→    js_files = sorted(basic_dir.glob("*.js"))
    21→    return [(f.name, f) for f in js_files]
    22→
    23→
    24→def get_compat_test_files():
    25→    """Discover passing original mquickjs .js test files in tests/compat/ directory."""
    26→    compat_dir = Path(__file__).parent / "compat"
    27→    if not compat_dir.exists():
    28→        return []
    29→    js_files = sorted(compat_dir.glob("*.js"))
    30→    return [(f.name, f) for f in js_files]
    31→
    32→
    33→def get_mquickjs_test_files():
    34→    """Discover original mquickjs .js test files in tests/ directory."""
    35→    tests_dir = Path(__file__).parent
    36→    # Get all .js files directly in tests/ (not in subdirectories)
    37→    js_files = sorted(tests_dir.glob("*.js"))
    38→    return [(f.name, f) for f in js_files]
    39→
    40→
    41→@pytest.mark.parametrize(
    42→    "name,path",
    43→    get_basic_test_files(),
    44→    ids=lambda x: x if isinstance(x, str) else None,
    45→)
    46→def test_basic_js(name: str, path: Path):
    47→    """Run a basic JavaScript test file."""
    48→    source = path.read_text(encoding="utf-8")
    49→    ctx = JSContext()
    50→    # Execute the script - if it throws, the test fails
    51→    ctx.eval(source)
    52→
    53→
    54→@pytest.mark.parametrize(
    55→    "name,path",
    56→    get_compat_test_files(),
    57→    ids=lambda x: x if isinstance(x, str) else None,
    58→)
    59→def test_compat_js(name: str, path: Path):
    60→    """Run a passing original mquickjs JavaScript test file.
    61→
    62→    These are tests from the original C mquickjs implementation
    63→    that now pass in our Python implementation.
    64→    """
    65→    source = path.read_text(encoding="utf-8")
    66→    ctx = JSContext(time_limit=2.0)
    67→    # Execute the script - if it throws, the test fails
    68→    ctx.eval(source)
    69→
    70→
    71→@pytest.mark.parametrize(
    72→    "name,path",
    73→    get_mquickjs_test_files(),
    74→    ids=lambda x: x if isinstance(x, str) else None,
    75→)
    76→@pytest.mark.xfail(reason="Original mquickjs tests - not yet passing")
    77→def test_mquickjs_js(name: str, path: Path):
    78→    """Run an original mquickjs JavaScript test file.
    79→
    80→    These tests are expected to fail until the VM is complete.
    81→    Watch for xfail tests that start passing!
    82→    """
    83→    source = path.read_text(encoding="utf-8")
    84→    ctx = JSContext(time_limit=2.0)  # Timeout to avoid infinite loops
    85→    # Execute the script - if it throws, the test fails
    86→    ctx.eval(source)
    87→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

======================== 395 passed, 4 xfailed in 4.33s ========================

1 file changed, 0 insertions(+), 0 deletions(-)
 rename tests/{ => compat}/test_language.js (100%)

     1→/* test for example.c */
     2→
     3→function assert(actual, expected, message) {
     4→    function get_full_type(o) {
     5→        var type = typeof(o);
     6→        if (type === 'object') {
     7→            if (o === null)
     8→                return 'null';
     9→            if (o.constructor && o.constructor.name)
    10→                return o.constructor.name;
    11→        }
    12→        return type;
    13→    }
    14→
    15→    if (arguments.length == 1)
    16→        expected = true;
    17→
    18→    if (typeof actual === typeof expected) {
    19→        if (actual === expected) {
    20→            if (actual !== 0 || (1 / actual) === (1 / expected))
    21→                return;
    22→        }
    23→        if (typeof actual === 'number') {
    24→            if (isNaN(actual) && isNaN(expected))
    25→                return true;
    26→        }
    27→        if (typeof actual === 'object') {
    28→            if (actual !== null && expected !== null
    29→            &&  actual.constructor === expected.constructor
    30→            &&  actual.toString() === expected.toString())
    31→                return;
    32→        }
    33→    }
    34→    // Should output the source file and line number and extract
    35→    //   the expression from the assert call
    36→    throw Error("assertion failed: got " +
    37→                get_full_type(actual) + ":|" + actual + "|, expected " +
    38→                get_full_type(expected) + ":|" + expected + "|" +
    39→                (message ? " (" + message + ")" : ""));
    40→}
    41→
    42→function cb(param)
    43→{
    44→    return "test" + param;
    45→}
    46→
    47→function test()
    48→{
    49→    var r1, r2, func;
    50→    r1 = new Rectangle(100, 200);
    51→    assert(r1.x, 100);
    52→    assert(r1.y, 200);
    53→
    54→    /* test inheritance */
    55→    r2 = new FilledRectangle(100, 200, 0x123456);
    56→    assert(r2.x, 100);
    57→    assert(r2.y, 200);
    58→    assert(r2.color, 0x123456);
    59→    
    60→    /* test closure */
    61→    func = Rectangle.getClosure("abcd");
    62→    assert(func(), "abcd");
    63→
    64→    /* test function call */
    65→    assert(Rectangle.call(cb, "abc"), "testabc");
    66→}
    67→
    68→test();
    69→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

     1→"use strict";
     2→
     3→function throw_error(msg) {
     4→    throw Error(msg);
     5→}
     6→
     7→function assert(actual, expected, message) {
     8→    function get_full_type(o) {
     9→        var type = typeof(o);
    10→        if (type === 'object') {
    11→            if (o === null)
    12→                return 'null';
    13→            if (o.constructor && o.constructor.name)
    14→                return o.constructor.name;
    15→        }
    16→        return type;
    17→    }
    18→
    19→    if (arguments.length == 1)
    20→        expected = true;
    21→
    22→    if (typeof actual === typeof expected) {
    23→        if (actual === expected) {
    24→            if (actual !== 0 || (1 / actual) === (1 / expected))
    25→                return;
    26→        }
    27→        if (typeof actual === 'number') {
    28→            if (isNaN(actual) && isNaN(expected))
    29→                return true;
    30→        }
    31→        if (typeof actual === 'object') {
    32→            if (actual !== null && expected !== null
    33→            &&  actual.constructor === expected.constructor
    34→            &&  actual.toString() === expected.toString())
    35→                return;
    36→        }
    37→    }
    38→    // Should output the source file and line number and extract
    39→    //   the expression from the assert call
    40→    throw_error("assertion failed: got " +
    41→                get_full_type(actual) + ":|" + actual + "|, expected " +
    42→                get_full_type(expected) + ":|" + expected + "|" +
    43→                (message ? " (" + message + ")" : ""));
    44→}
    45→
    46→function assert_throws(expected_error, func)
    47→{
    48→    var err = false;
    49→    try {
    50→        func();
    51→    } catch(e) {
    52→        err = true;
    53→        if (!(e instanceof expected_error)) {
    54→            // Should output the source file and line number and extract
    55→            //   the expression from the assert_throws() call
    56→            throw_error("unexpected exception type");
    57→            return;
    58→        }
    59→    }
    60→    if (!err) {
    61→        // Should output the source file and line number and extract
    62→        //   the expression from the assert_throws() call
    63→        throw_error("expected exception");
    64→    }
    65→}
    66→
    67→function my_func(a, b)
    68→{
    69→    return a + b;
    70→}
    71→
    72→function test_function()
    73→{
    74→    function f(a, b) {
    75→        var i, tab = [];
    76→        tab.push(this);
    77→        for(i = 0; i < arguments.length; i++)
    78→            tab.push(arguments[i]);
    79→        return tab;
    80→    }
    81→    function constructor1(a) {
    82→        this.x = a;
    83→    }
    84→    
    85→    var r, g;
    86→    
    87→    r = my_func.call(null, 1, 2);
    88→    assert(r, 3, "call");
    89→
    90→    r = my_func.apply(null, ["abc", 2]);
    91→    assert(r, "abc2", "apply");
    92→
    93→    r = new Function("a", "b", "return a + b;");
    94→    assert(r(2,3), 5, "function");
    95→
    96→    g = f.bind(1, 2);
    97→//    assert(g.length, 1);
    98→//    assert(g.name, "bound f");
    99→    assert(g(3).toString(), "1,2,3");
   100→
   101→    if (0) {
   102→    g = constructor1.bind(null, 1);
   103→    r = new g();
   104→    assert(r.x, 1);
   105→    }
   106→}
   107→
   108→function test()
   109→{
   110→    var r, a, b, c, err;
   111→
   112→    r = Error("hello");
   113→    assert(r.message, "hello", "Error");
   114→
   115→    a = new Object();
   116→    a.x = 1;
   117→    assert(a.x, 1, "Object");
   118→
   119→    assert(Object.prototype.constructor, Object, "constructor");
   120→    assert(Object.getPrototypeOf(a), Object.prototype, "getPrototypeOf");
   121→    Object.defineProperty(a, "y", { value: 3, writable: true, configurable: true, enumerable: true });
   122→    assert(a.y, 3, "defineProperty");
   123→
   124→    Object.defineProperty(a, "z", { get: function () { return 4; }, set: function(val) { this.z_val = val; }, configurable: true, enumerable: true });
   125→    assert(a.z, 4, "get");
   126→    a.z = 5;
   127→    assert(a.z_val, 5, "set");
   128→/*
   129→    a = { get z() { return 4; }, set z(val) { this.z_val = val; } };
   130→    assert(a.z, 4, "get");
   131→    a.z = 5;
   132→    assert(a.z_val, 5, "set");
   133→*/
   134→    a = {};
   135→    b = Object.create(a);
   136→    assert(Object.getPrototypeOf(b), a, "create");
   137→    c = {u:2};
   138→    Object.setPrototypeOf(a, c);
   139→    assert(Object.getPrototypeOf(a), c, "setPrototypeOf");
   140→    
   141→    a={};
   142→    assert(a.toString(), "[object Object]", "toString");
   143→    assert(Object.prototype.toString.call(1), "[object Number]", "toString");
   144→/*
   145→    a={x:1};
   146→    assert(Object.isExtensible(a), true, "extensible");
   147→    Object.preventExtensions(a);
   148→
   149→    err = false;
   150→    try {
   151→        a.y = 2;
   152→    } catch(e) {
   153→        err = true;
   154→    }
   155→    assert(Object.isExtensible(a), false, "extensible");
   156→    assert(typeof a.y, "undefined", "extensible");
   157→    assert(err);
   158→*/
   159→
   160→    a = {x: 1};
   161→    assert(a.hasOwnProperty("x"), true);
   162→    assert(a.hasOwnProperty("y"), false);
   163→    a = [1, 2];
   164→    assert(a.hasOwnProperty(1), true);
   165→    assert(a.hasOwnProperty(2), false);
   166→}
   167→
   168→function test_enum()
   169→{
   170→    var a, tab;
   171→    a = {x:1, y:1, z:3};
   172→    tab = Object.keys(a);
   173→    assert(tab.toString(), "x,y,z", "keys");
   174→}
   175→
   176→function test_array()
   177→{
   178→    var a, err, i, log;
   179→
   180→    a = [1, 2, 3];
   181→    assert(a.length, 3, "array");
   182→    assert(a[2], 3, "array1");
   183→
   184→    a = new Array(10);
   185→    assert(a.length, 10, "array2");
   186→
   187→    a = new Array(1, 2);
   188→    assert(a[0] === 1 && a[1] === 2);
   189→
   190→    a = [1, 2, 3];
   191→    a.length = 2;
   192→    assert(a[0] === 1 && a[1] === 2 && a.length === 2);
   193→
   194→    a = [];
   195→    a[0] = 10;
   196→    a[1] = 3;
   197→    assert(a.length, 2);
   198→    
   199→/*
   200→    a = [];
   201→    a[1] = 10;
   202→    a[4] = 3;
   203→    assert(a.length, 5);
   204→*/
   205→    
   206→    a = [1,2];
   207→    a.length = 5;
   208→    a[4] = 1;
   209→    a.length = 4;
   210→    assert(a[4] !== 1);
   211→
   212→    a = [1,2,3];
   213→    assert(a.join("-"), "1-2-3");
   214→    
   215→    a = [1,2];
   216→    assert(a.push(3, 4), 4);
   217→    assert(a.toString(), "1,2,3,4");
   218→
   219→    a = [1,2,3];
   220→    assert(a.pop(), 3);
   221→    assert(a.toString(), "1,2");
   222→    
   223→    /*
   224→    a=[1,2,3,4,5];
   225→    Object.defineProperty(a, "3", { configurable: false });
   226→    err = false;
   227→    try {
   228→        a.length = 2;
   229→    } catch(e) {
   230→        err = true;
   231→    }
   232→    assert(err && a.toString() === "1,2,3,4");
   233→    */
   234→    assert(Array.isArray([]), true);
   235→    assert(Array.isArray({}), false);
   236→
   237→    a = [1, 2, 3];
   238→    assert(a.reverse().toString(), "3,2,1");
   239→
   240→    a = [1, 2, 3];
   241→    a = a.concat(4, [5, 6], 7);
   242→    assert(a.toString(), "1,2,3,4,5,6,7");
   243→
   244→    a = [1, 2, 3];
   245→    assert(a.shift(), 1);
   246→    assert(a.toString(), "2,3");
   247→
   248→    a = [3,4];
   249→    assert(a.unshift(1,2), 4);
   250→    assert(a.toString(), "1,2,3,4");
   251→
   252→    a = [10, 11, 10, 11]
   253→    assert(a.indexOf(11), 1);
   254→    assert(a.indexOf(9), -1);
   255→    assert(a.indexOf(11, 2), 3);
   256→    assert(a.lastIndexOf(11), 3);
   257→    assert(a.lastIndexOf(11, 2), 1);
   258→
   259→    assert([1, 2, 3, 4].slice(1, 3).toString(), "2,3");
   260→    assert([1, 2, 3, 4].slice(1).toString(), "2,3,4");
   261→
   262→    log="";
   263→    assert([1, 2, 3, 4].every(function(val, k) { log += val; assert(k, (val - 1)); return val != 5 }), true);
   264→    assert(log, "1234");
   265→
   266→    log = "";
   267→    assert([1, 2, 3, 4].some(function(val, k) { log += val; assert(k, (val - 1)); return val == 5 }), false);
   268→    assert(log, "1234");
   269→
   270→    log = "";
   271→    assert([1, 2, 3, 4].forEach(function(val, k) { log += val; assert(k, (val - 1)); }), void 0);
   272→    assert(log, "1234");
   273→
   274→    log = "";
   275→    a = [1, 2, 3, 4].map(function(val, k) { assert(k, (val - 1)); return val + 1; });
   276→    assert(a.toString(), "2,3,4,5");
   277→
   278→    log = "";
   279→    a = [1, 2, 3, 4].filter(function(val, k) { assert(k, (val - 1)); return val == 2 || val == 3; });
   280→    assert(a.toString(), "2,3");
   281→    
   282→    assert(["1", 2, 3, 4].reduce(function(acc, val, k) { assert(k, (val - 1)); return acc + val; }), "1234");
   283→    assert([1, 2, 3, 4].reduce(function(acc, val, k) { assert(k, (val - 1)); return acc + val; }, "0"), "01234");
   284→
   285→    assert([1, 2, 3, "4"].reduceRight(function(acc, val, k) { assert(k, (val - 1)); return acc + val; }), "4321");
   286→    assert([1, 2, 3, 4].reduceRight(function(acc, val, k) { assert(k, (val - 1)); return acc + val; }, "5"), "54321");
   287→
   288→    a = [1, 2, 3, 4];
   289→    assert(a.splice(1, 2, 10, 11, 12).toString(), "2,3");
   290→    assert(a.toString(), "1,10,11,12,4");
   291→
   292→    a = [1, 2, 3, 4];
   293→    assert(a.splice(1, 2, 10).toString(), "2,3");
   294→    assert(a.toString(), "1,10,4");
   295→
   296→    a = [5, 4, 3, 2, 1];
   297→    a.sort();
   298→    assert(a[0], 1);
   299→    assert(a.toString(), "1,2,3,4,5");
   300→
   301→    a = [1, 2, 3, 4, 5];
   302→    a.sort(function(a, b) { return (a < b) - (a > b) } );
   303→    assert(a.toString(), "5,4,3,2,1");
   304→
   305→    /* verify that the sort is stable and that 'undefined' is correctly handled */
   306→    a = [ "b0", "z0", undefined, "b1", "a0", undefined, "z1", "a1", "a2"];
   307→    a.sort(function(a, b) { return (a[0] > b[0]) - (a[0] < b[0]) } );
   308→    assert(a.toString(), "a0,a1,a2,b0,b1,z0,z1,,");
   309→}
   310→
   311→/* non standard array behaviors */
   312→function test_array_ext()
   313→{
   314→    var a;
   315→    a = [1, 2, 3];
   316→    assert_throws(TypeError, function () { a[1.2] = 1; } );
   317→    assert_throws(TypeError, function () { a[NaN] = 1; } );
   318→    assert_throws(TypeError, function () { a.NaN = 1; } );
   319→    assert_throws(TypeError, function () { a[Infinity] = 1; } );
   320→    assert_throws(TypeError, function () { a.Infinity = 1; } );
   321→    assert_throws(TypeError, function () { a[-Infinity] = 1; } );
   322→    assert_throws(TypeError, function () { a["1.2"] = 1; } );
   323→    assert_throws(TypeError, function () { a["NaN"] = 1; } );
   324→    assert_throws(TypeError, function () { a["Infinity"] = 1; } );
   325→    assert_throws(TypeError, function () { a["-Infinity"] = 1; } );
   326→}
   327→
   328→function test_string()
   329→{
   330→    var a;
   331→    a = String("abc");
   332→    assert(a.length, 3, "string");
   333→    assert(a[1], "b", "string");
   334→    assert(a.charCodeAt(1), 0x62, "string");
   335→    assert(String.fromCharCode(65), "A", "string");
   336→    assert(String.fromCharCode(65, 66, 67), "ABC", "string");
   337→    assert(a.charAt(1), "b");
   338→    assert(a.charAt(-1), "");
   339→    assert(a.charAt(3), "");
   340→
   341→    a = "abcd";
   342→    assert(a.substring(1, 3), "bc", "substring");
   343→    a = String.fromCharCode(0x20ac);
   344→    assert(a.charCodeAt(0), 0x20ac, "unicode");
   345→    assert(a, "€", "unicode");
   346→    assert(a, "\u20ac", "unicode");
   347→    assert(a, "\u{20ac}", "unicode");
   348→    assert("a", "\x61", "unicode");
   349→        
   350→    a = "\u{10ffff}";
   351→    assert(a.length, 2, "unicode");
   352→    assert(a, "\u{dbff}\u{dfff}", "unicode");
   353→    assert(a.codePointAt(0), 0x10ffff);
   354→    assert(a.codePointAt(1), 0xdfff);
   355→    assert(String.fromCodePoint(0x10ffff), a);
   356→
   357→    assert("a".concat("b", "c", 123), "abc123");
   358→
   359→    assert("abcabc".indexOf("cab"), 2);
   360→    assert("abcabc".indexOf("cab2"), -1);
   361→    assert("abc".indexOf("c"), 2);
   362→    assert("abcabc".lastIndexOf("ab"), 3);
   363→
   364→    a = "a,b,c".split(",");
   365→    assert(a.length === 3 && a[0] === "a" && a[1] === "b" && a[2] === "c");
   366→    a = ",b,c".split(",");
   367→    assert(a.length === 3 && a[0] === "" && a[1] === "b" && a[2] === "c");
   368→    a = "a,b,".split(",");
   369→    assert(a.length === 3 && a[0] === "a" && a[1] === "b" && a[2] === "");
   370→
   371→//    assert((1,eval)('"\0"'), "\0");
   372→    assert("123AbCd€".toLowerCase(), "123abcd€");
   373→    assert("123AbCd€".toUpperCase(), "123ABCD€");
   374→    assert("  ab€cd  ".trim(), "ab€cd");
   375→    assert("  ab€cd  ".trimStart(), "ab€cd  ");
   376→    assert("  ab€cd  ".trimEnd(), "  ab€cd");
   377→    assert("abcabc".replace("b", "a$$b$&"), "aa$bbcabc");
   378→    assert("abcabc".replaceAll("b", "a$$b$&"),"aa$bbcaa$bbc");
   379→}
   380→
   381→/* specific tests for internal UTF-8 storage */
   382→function test_string2()
   383→{
   384→    var str = "hé€\u{101234}o";
   385→    assert(str, "h\xe9\u20ac\udbc4\u{de34}o", "parse");
   386→    assert(str.length, 6, "length");
   387→    assert(str.slice(1, 2), "é", "slice");
   388→    assert(str.slice(1, 3), "é€", "slice");
   389→    assert(str.slice(2, 5), "€\u{101234}", "slice");
   390→    assert(str.slice(2, 4), "€\u{dbc4}", "slice");
   391→    assert(str.slice(4, 6), "\u{de34}o", "slice");
   392→    assert("hé€" + "\u{101234}o", str, "concat 1");
   393→    assert("h\xe9\u20ac\udbc4" + "\u{de34}o", str, "concat 2");
   394→
   395→    var ch = "\udbc4\u{de34}";
   396→    assert(ch.slice(0, 2), "\udbc4\u{de34}", "slice 1");
   397→    assert(ch.slice(0, 1), "\udbc4", "slice 1");
   398→    assert(ch.slice(1, 2), "\u{de34}", "slice 1");
   399→
   400→    assert("\udbc4" + "\u{de34}", "\u{101234}", "concat 3");
   401→    assert("\udbc4" + "o\u{de34}", "\udbc4o\u{de34}", "concat 4");
   402→
   403→    assert(str[0], "h", "char 1");
   404→    assert(str[1], "é", "char 2");
   405→    assert(str[3], "\u{dbc4}", "char 3");
   406→    assert(str[4], "\u{de34}", "char 4");
   407→    assert(str.charCodeAt(3), 0xdbc4, "char 4");
   408→    assert("€"[0], "€", "char 5");
   409→    assert("\u{101234}"[0], "\u{dbc4}", "char 6");
   410→    assert("\u{101234}"[1], "\u{de34}", "char 6");
   411→
   412→    assert("\udbc4" <= "\udbc4", true);
   413→    assert("\udbc3" < "\u{101234}", true);
   414→    assert("\udbc4" < "\u{101234}", true);
   415→    assert("\udbc5" > "\u{101234}", true);
   416→
   417→    assert("\u{101234}" > "\udbc3", true);
   418→    assert("\u{101234}" > "\udbc4", true);
   419→    assert("\u{101234}" < "\udbc5", true);
   420→
   421→    assert("\u{101233}" < "\u{101234}", true);
   422→}
   423→
   424→function test_math()
   425→{
   426→    var a;
   427→    a = 1.4;
   428→    assert(Math.floor(a), 1);
   429→    assert(Math.ceil(a), 2);
   430→    assert(Math.imul(0x12345678, 123), -1088058456);
   431→    assert(Math.fround(0.1), 0.10000000149011612);
   432→}
   433→
   434→function test_number()
   435→{
   436→    assert(+"  123   ", 123);
   437→    assert(+"0b111", 7);
   438→    assert(+"0o123", 83);
   439→    
   440→    assert(parseInt("123"), 123);
   441→    assert(parseInt("  123r"), 123);
   442→    assert(parseInt("0x123"), 0x123);
   443→    assert(parseInt("0o123"), 0);
   444→    assert(parseFloat("0x1234"), 0);
   445→    assert(parseFloat("Infinity"), Infinity);
   446→    assert(parseFloat("-Infinity"), -Infinity);
   447→    assert(parseFloat("123.2"), 123.2);
   448→    assert(parseFloat("123.2e3"), 123200);
   449→
   450→    assert((25).toExponential(), "2.5e+1");
   451→    assert((25).toExponential(0), "3e+1");
   452→    assert((-25).toExponential(0), "-3e+1");
   453→    assert((2.5).toPrecision(1), "3");
   454→    assert((-2.5).toPrecision(1), "-3");
   455→    assert((25).toPrecision(1), "3e+1");
   456→    assert((1.125).toFixed(2), "1.13");
   457→    assert((-1.125).toFixed(2), "-1.13");
   458→    assert((-1e-10).toFixed(0), "-0");
   459→}
   460→
   461→function test_global_eval()
   462→{
   463→    var r, g_eval = (1,eval);
   464→
   465→    r = g_eval("1+1;");
   466→    assert(r, 2, "eval");
   467→
   468→    /* z is created as a global variable */
   469→    r = g_eval("var z=2; z;");
   470→    assert(r, 2, "eval");
   471→    assert(z, 2);
   472→    
   473→    assert(g_eval("if (1) 2; else 3;"), 2);
   474→    assert(g_eval("if (0) 2; else 3;"), 3);
   475→
   476→    z = 2;
   477→    assert(g_eval("z"), 2);
   478→
   479→    g_eval("z = 3");
   480→    assert(z, 3);
   481→}
   482→
   483→function test_typed_array()
   484→{
   485→    var buffer, a, i;
   486→
   487→    a = new Uint8Array(4);
   488→    assert(a.length, 4);
   489→    for(i = 0; i < a.length; i++)
   490→        a[i] = i;
   491→    assert(a.toString(), "0,1,2,3");
   492→    a[0] = -1;
   493→    assert(a[0], 255);
   494→
   495→    a = new Int8Array(3);
   496→    a[0] = 255;
   497→    assert(a[0], -1);
   498→
   499→    a = new Int32Array(3);
   500→    a[0] = Math.pow(2, 32) - 1;
   501→    assert(a[0], -1);
   502→    assert(a.BYTES_PER_ELEMENT, 4);
   503→
   504→    a = new Uint8ClampedArray(4);
   505→    a[0] = -100;
   506→    a[1] = 1.5;
   507→    a[2] = 0.5;
   508→    a[3] = 1233.5;
   509→    assert(a.toString(), "0,2,0,255");
   510→    
   511→    buffer = new ArrayBuffer(16);
   512→    assert(buffer.byteLength, 16);
   513→    a = new Uint32Array(buffer, 12, 1);
   514→    assert(a.length, 1);
   515→    a[0] = -1;
   516→
   517→    a = new Uint16Array(buffer, 2);
   518→    a[0] = -1;
   519→
   520→    a = new Float32Array(buffer, 8, 1);
   521→    a[0] = 1;
   522→    
   523→    a = new Uint8Array(buffer);
   524→    
   525→    assert(a.toString(), "0,0,255,255,0,0,0,0,0,0,128,63,255,255,255,255");
   526→
   527→    assert(a.buffer, buffer);
   528→
   529→    a = new Uint8Array([1, 2, 3, 4]);
   530→    assert(a.toString(), "1,2,3,4");
   531→    if (0) {
   532→        a.set([10, 11], 2);
   533→        assert(a.toString(), "1,2,10,11");
   534→    }
   535→
   536→    a = new Uint8Array([1, 2, 3, 4]);
   537→    a = a.subarray(1, 3);
   538→    assert(a.toString(), "2,3");
   539→}
   540→
   541→function repeat(a, n)
   542→{
   543→    var i, r;
   544→    r = "";
   545→    while (n != 0) {
   546→        if (n & 1)
   547→            r += a;
   548→        a += a;
   549→        n >>>= 1;
   550→    }
   551→    return r;
   552→}
   553→
   554→/* return [s, line_num, col_num] where line_num and col_num are the
   555→   position of the '@' character in 'str'. 's' is str without the '@'
   556→   character */
   557→function get_string_pos(str)
   558→{
   559→    var p, line_num, col_num, s, q, r;
   560→    p = str.indexOf('@');
   561→    assert(p >= 0, true);
   562→    q = 0;
   563→    line_num = 1;
   564→    for(;;) {
   565→        r = str.indexOf('\n', q);
   566→        if (r < 0 || r >= p)
   567→            break;
   568→        q = r + 1;
   569→        line_num++;
   570→    }
   571→    col_num = p - q + 1;
   572→    s = str.slice(0, p) + str.slice(p + 1);
   573→    return [s, line_num, col_num];
   574→}
   575→
   576→function check_error_pos(e, expected_error, line_num, col_num, level)
   577→{
   578→    var expected_pos, tab, line;
   579→    level |= 0;
   580→    expected_pos = ":" + line_num + ":" + col_num;
   581→    tab = e.stack.split("\n");
   582→    line = tab[level];
   583→    if (line.slice(-1) == ')')
   584→        line = line.slice(0, -1);
   585→    if (line.indexOf(expected_pos) < 0) {
   586→        throw_error("unexpected line or column number. error=|" + e.message +
   587→                    "| got |" + line + "|, expected |" + expected_pos + "|");
   588→    }
   589→}
   590→
   591→function assert_json_error(str, line_num, col_num)
   592→{
   593→    var err = false;
   594→    var expected_pos, tab;
   595→
   596→    tab = get_string_pos(str);
   597→    
   598→    try {
   599→        JSON.parse(tab[0]);
   600→    } catch(e) {
   601→        err = true;
   602→        if (!(e instanceof SyntaxError)) {
   603→            throw_error("unexpected exception type");
   604→            return;
   605→        }
   606→        /* XXX: the way quickjs returns JSON errors is not similar to Node or spiderMonkey */
   607→        check_error_pos(e, SyntaxError, tab[1], tab[2]);
   608→    }
   609→    if (!err) {
   610→        throw_error("expected exception");
   611→    }
   612→}
   613→
   614→function test_json()
   615→{
   616→    var a, s, n;
   617→
   618→    s = '{"x":1,"y":true,"z":null,"a":[1,2,false],"1234":"str"}';
   619→    a = JSON.parse(s);
   620→    assert(a.x, 1);
   621→    assert(a.y, true);
   622→    assert(a.z, null);
   623→    assert(a[1234], "str");
   624→    assert(JSON.stringify(a), s);
   625→
   626→    assert(JSON.stringify({x: 1, y: undefined, z:2}), '{"x":1,"z":2}');
   627→
   628→    /* larger stack */
   629→    n = 100;
   630→    s = repeat("[", n) + repeat("]", n);
   631→    a = JSON.parse(s);
   632→    assert(JSON.stringify(a), s);
   633→
   634→//    assert_json_error('\n"  \\@x"');
   635→//    assert_json_error('\n{ "a": @x }"');
   636→}
   637→
   638→function test_large_eval_parse_stack()
   639→{
   640→    var n = 1000;
   641→    var str;
   642→    
   643→    str = repeat("(", n) + "1" + repeat(")", n);
   644→    assert((1,eval)(str), 1);
   645→    
   646→    str = repeat("{", n) + "1;" + repeat("}", n);
   647→    assert((1,eval)(str), 1);
   648→    
   649→    str = repeat("[", n) + "1" + repeat("]", n) + repeat("[0]", n);
   650→    assert((1,eval)(str), 1);
   651→}
   652→
   653→function test_regexp()
   654→{
   655→    var a, str, n;
   656→
   657→    str = "abbbbbc";
   658→    a = /(b+)c/.exec(str);
   659→    assert(a[0], "bbbbbc");
   660→    assert(a[1], "bbbbb");
   661→    assert(a.index, 1);
   662→    assert(a.input, str);
   663→    a = /(b+)c/.test(str);
   664→    assert(a, true);
   665→    assert(/\x61/.exec("a")[0], "a");
   666→    assert(/\u0061/.exec("a")[0], "a");
   667→    assert(/\ca/.exec("\x01")[0], "\x01");
   668→    assert(/\\a/.exec("\\a")[0], "\\a");
   669→    assert(/\c0/.exec("\\c0")[0], "\\c0");
   670→
   671→    a = /(\.(?=com|org)|\/)/.exec("ah.com");
   672→    assert(a.index === 2 && a[0] === ".");
   673→
   674→    a = /(\.(?!com|org)|\/)/.exec("ah.com");
   675→    assert(a, null);
   676→
   677→    a = /(?=(a+))/.exec("baaabac");
   678→    assert(a.index === 1 && a[0] === "" && a[1] === "aaa");
   679→
   680→    a = /(z)((a+)?(b+)?(c))*/.exec("zaacbbbcac");
   681→    assert(a, ["zaacbbbcac","z","ac","a", undefined,"c"]);
   682→
   683→//    a = (1,eval)("/\0a/");
   684→//    assert(a.toString(), "/\0a/");
   685→//    assert(a.exec("\0a")[0], "\0a");
   686→
   687→//    assert(/{1a}/.toString(), "/{1a}/");
   688→//    a = /a{1+/.exec("a{11");
   689→//    assert(a, ["a{11"]);
   690→
   691→    /* test zero length matches */
   692→    a = /(?:(?=(abc)))a/.exec("abc");
   693→    assert(a, ["a", "abc"]);
   694→    a = /(?:(?=(abc)))?a/.exec("abc");
   695→    assert(a, ["a", undefined]);
   696→    a = /(?:(?=(abc))){0,2}a/.exec("abc");
   697→    assert(a, ["a", undefined]);
   698→    a = /(?:|[\w])+([0-9])/.exec("123a23");
   699→    assert(a, ["123a23", "3"]);
   700→    a = /()*?a/.exec(",");
   701→    assert(a, null);
   702→
   703→    /* test \b escape */
   704→    assert(/[\q{a\b}]/.test("a\b"), true);
   705→    assert(/[\b]/.test("\b"), true);
   706→    
   707→    /* test case insensitive matching (test262 hardly tests it) */
   708→    assert("aAbBcC".replace(/[^b]/gui, "X"), "XXbBXX");
   709→    assert("aAbBcC".replace(/[^A-B]/gui, "X"), "aAbBXX");
   710→
   711→    /* case where lastIndex points to the second element of a
   712→       surrogate pair */
   713→    a = /(?:)/gu;
   714→    a.lastIndex = 1;
   715→    a.exec("🐱");
   716→    assert(a.lastIndex, 0);
   717→
   718→    /* test backreferences */
   719→    assert(/(abc)\1/.exec("abcabc"), ["abcabc", "abc"]);
   720→    assert(/(abc)\1/i.exec("aBcaBC"), ["aBcaBC", "aBc"]);
   721→
   722→    /* large parse stack */
   723→    n = 10000;
   724→    a = new RegExp(repeat("(?:", n) + "a+" + repeat(")", n));
   725→    assert(a.exec("aa"), ["aa"]);
   726→    
   727→    /* additional functions */
   728→    
   729→    a = "abbbc".match(/b+/);
   730→    assert(a, [ "bbb" ]);
   731→    assert("abcaaad".match(/a+/g), [ "a", "aaa" ]);
   732→
   733→    assert("abc".search(/b/), 1);
   734→    assert("abc".search(/d/), -1);
   735→
   736→    assert("abbbbcbbd".replace(/b+/, "€$&"), "a€bbbbcbbd");
   737→    assert("abbbbcbbd".replace(/b+/g, "€$&"), "a€bbbbc€bbd");
   738→    assert("abbbbccccd".replace(/(b+)(c+)/g, "_$1_$2_"), "a_bbbb_cccc_d");
   739→    assert("abbbbcd".replace(/b+/g, "_$`_$&_$'_"), "a_a_bbbb_cd_cd");
   740→
   741→    assert("abc".split(/b/), ["a", "c"]);
   742→    assert("ab".split(/a*/g), ["", "b"]);
   743→    assert("ab".split(/a*?/g), ["a", "b"]);
   744→    assert("abc".split(/b/), ["a", "c"]);
   745→    assert("A<B>bold</B>and<CODE>coded</CODE>".split(/<(\/)?([^<>]+)>/), ["A", undefined, "B", "bold", "/", "B", "and", undefined, "CODE", "coded", "/", "CODE", ""]);
   746→}
   747→
   748→function eval_error(eval_str, expected_error, level)
   749→{
   750→    var err = false;
   751→    var expected_pos, tab;
   752→
   753→    tab = get_string_pos(eval_str);
   754→    
   755→    try {
   756→        (1, eval)(tab[0]);
   757→    } catch(e) {
   758→        err = true;
   759→        if (!(e instanceof expected_error)) {
   760→            throw_error("unexpected exception type");
   761→            return;
   762→        }
   763→        check_error_pos(e, expected_error, tab[1], tab[2], level);
   764→    }
   765→    if (!err) {
   766→        throw_error("expected exception");
   767→    }
   768→}
   769→
   770→var poisoned_number = {
   771→    valueOf: function() { throw Error("poisoned number") },
   772→};
   773→
   774→function test_line_column_numbers()
   775→{
   776→    var f, e, tab;
   777→
   778→    /* The '@' character provides the expected position of the
   779→       error. It is removed before evaluating the string. */
   780→    
   781→    /* parsing */
   782→    eval_error("\n 123 @a ", SyntaxError);
   783→    eval_error("\n  @/*  ", SyntaxError);
   784→    eval_error("function f  @a", SyntaxError);
   785→    /* currently regexp syntax errors point to the start of the regexp */
   786→    eval_error("\n  @/aaa]/u", SyntaxError); 
   787→
   788→    /* function definitions */
   789→/*    
   790→    tab = get_string_pos("\n   @function f() { }; f;");
   791→    e = (1, eval)(tab[0]);
   792→    assert(e.lineNumber, tab[1]);
   793→    assert(e.columnNumber, tab[2]);
   794→*/
   795→    /* errors */
   796→    tab = get_string_pos('\n  Error@("hello");');
   797→    e = (1, eval)(tab[0]);
   798→    check_error_pos(e, Error, tab[1], tab[2]);
   799→    
   800→    eval_error('\n  throw Error@("hello");', Error);
   801→
   802→    /* operators */
   803→    eval_error('\n  1 + 2 @* poisoned_number;', Error, 1);
   804→    eval_error('\n  1 + "café" @* poisoned_number;', Error, 1);
   805→    eval_error('\n  1 + 2 @** poisoned_number;', Error, 1);
   806→    eval_error('\n  2 * @+ poisoned_number;', Error, 1);
   807→    eval_error('\n  2 * @- poisoned_number;', Error, 1);
   808→    eval_error('\n  2 * @~ poisoned_number;', Error, 1);
   809→    eval_error('\n  2 * @++ poisoned_number;', Error, 1);
   810→    eval_error('\n  2 * @-- poisoned_number;', Error, 1);
   811→    eval_error('\n  2 * poisoned_number @++;', Error, 1);
   812→    eval_error('\n  2 * poisoned_number @--;', Error, 1);
   813→
   814→    /* accessors */
   815→    eval_error('\n 1 + null@[0];', TypeError); 
   816→    eval_error('\n 1 + null @. abcd;', TypeError); 
   817→    //    eval_error('\n 1 + null @( 1234 );', TypeError);
   818→    eval_error('var obj = { get a() { throw Error("test"); } }\n 1 + obj @. a;',
   819→               Error, 1);
   820→    eval_error('var obj = { set a(b) { throw Error("test"); } }\n obj @. a = 1;',
   821→               Error, 1);
   822→    
   823→    /* variables reference */
   824→    eval_error('\n  1 + @not_def', ReferenceError, 0);
   825→
   826→    /* assignments */
   827→    eval_error('1 + (@not_def = 1)', ReferenceError, 0);
   828→    eval_error('1 + (@not_def += 2)', ReferenceError, 0);
   829→    eval_error('var a;\n 1 + (a @+= poisoned_number);', Error, 1);
   830→}
   831→
   832→test();
   833→test_string();
   834→test_string2();
   835→test_array();
   836→test_array_ext();
   837→test_enum();
   838→test_function();
   839→test_number();
   840→test_math();
   841→test_typed_array();
   842→test_global_eval();
   843→test_json();
   844→test_regexp();
   845→test_line_column_numbers();
   846→test_large_eval_parse_stack();
   847→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

FAILED: JSTypeError: TypeError: Cannot read property of undefined

branch 'claude/python-mquickjs-port-uPKcc' set up to track 'origin/claude/python-mquickjs-port-uPKcc'.
To http://127.0.0.1:49259/git/simonw/mquickjs-python
   57f0394..19e8906  claude/python-mquickjs-port-uPKcc -> claude/python-mquickjs-port-uPKcc

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Traceback (most recent call last):
  File "<string>", line 7, in <module>
  File "/home/user/mquickjs-python/src/mquickjs_python/context.py", line 831, in eval
    result = vm.run(compiled)
             ^^^^^^^^^^^^^^^^
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 108, in run
    return self._execute()
           ^^^^^^^^^^^^^^^
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 165, in _execute
    self._execute_opcode(op, arg, frame)
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 274, in _execute_opcode
    self.stack.append(self._get_property(obj, key))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 854, in _get_property
    raise JSTypeError(f"Cannot read property of {obj}")
mquickjs_python.errors.JSTypeError: TypeError: Cannot read property of undefined

Starting test...
Error created, message: hello
Error test passed
Object test passed
Testing Object.prototype.constructor
Error: TypeError: Cannot read property of undefined

Object: {'keys': <function JSContext._create_object_constructor.<locals>.keys_fn at 0x7ecd056d8a40>, 'values': <function JSContext._create_object_constructor.<locals>.values_fn at 0x7ecd056d8ae0>, 'entries': <function JSContext._create_object_constructor.<locals>.entries_fn at 0x7ecd056d8cc0>, 'assign': <function JSContext._create_object_constructor.<locals>.assign_fn at 0x7ecd056d9120>, 'getPrototypeOf': <function JSContext._create_object_constructor.<locals>.get_prototype_of at 0x7ecd056d91c0>, 'setPrototypeOf': <function JSContext._create_object_constructor.<locals>.set_prototype_of at 0x7ecd05527740>, 'defineProperty': <function JSContext._create_object_constructor.<locals>.define_property at 0x7ecd055277e0>, 'defineProperties': <function JSContext._create_object_constructor.<locals>.define_properties at 0x7ecd05527880>, 'create': <function JSContext._create_object_constructor.<locals>.create_fn at 0x7ecd05527920>, 'getOwnPropertyDescriptor': <function JSContext._create_object_constructor.<locals>.get_own_property_descriptor at 0x7ecd055279c0>}
Object.prototype: None
typeof Object.prototype: undefined

    83→        self._globals["eval"] = self._create_eval_function()
    84→
    85→    def _console_log(self, *args: JSValue) -> None:
    86→        """Console.log implementation."""
    87→        print(" ".join(to_string(arg) for arg in args))
    88→
    89→    def _create_object_constructor(self) -> JSCallableObject:
    90→        """Create the Object constructor with static methods."""
    91→        # Create Object.prototype first
    92→        object_prototype = JSObject()
    93→
    94→        # Constructor function - new Object() creates empty object
    95→        def object_constructor(*args):
    96→            obj = JSObject()
    97→            obj._prototype = object_prototype
    98→            return obj
    99→
   100→        # Create a callable object that acts as constructor
   101→        obj_constructor = JSCallableObject(object_constructor)
   102→        obj_constructor._prototype = object_prototype
   103→        object_prototype.set("constructor", obj_constructor)
   104→
   105→        # Store for other constructors to use
   106→        self._object_prototype = object_prototype
   107→
   108→        def keys_fn(*args):
   109→            obj = args[0] if args else UNDEFINED
   110→            if not isinstance(obj, JSObject):
   111→                return JSArray()
   112→            arr = JSArray()
   113→            arr._elements = list(obj.keys())
   114→            return arr
   115→
   116→        def values_fn(*args):
   117→            obj = args[0] if args else UNDEFINED
   118→            if not isinstance(obj, JSObject):
   119→                return JSArray()
   120→            arr = JSArray()
   121→            arr._elements = [obj.get(k) for k in obj.keys()]
   122→            return arr

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

253:        obj_constructor.set("keys", keys_fn)

   250→
   251→            return descriptor
   252→
   253→        obj_constructor.set("keys", keys_fn)
   254→        obj_constructor.set("values", values_fn)
   255→        obj_constructor.set("entries", entries_fn)
   256→        obj_constructor.set("assign", assign_fn)
   257→        obj_constructor.set("getPrototypeOf", get_prototype_of)
   258→        obj_constructor.set("setPrototypeOf", set_prototype_of)
   259→        obj_constructor.set("defineProperty", define_property)
   260→        obj_constructor.set("defineProperties", define_properties)
   261→        obj_constructor.set("create", create_fn)
   262→        obj_constructor.set("getOwnPropertyDescriptor", get_own_property_descriptor)
   263→
   264→        return obj_constructor
   265→
   266→    def _create_array_constructor(self) -> JSCallableObject:
   267→        """Create the Array constructor with static methods."""
   268→        # Create Array.prototype (inherits from Object.prototype)
   269→        array_prototype = JSArray()

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   249→            descriptor.set("configurable", True)
   250→
   251→            return descriptor
   252→
   253→        obj_constructor.set("keys", keys_fn)
   254→        obj_constructor.set("values", values_fn)
   255→        obj_constructor.set("entries", entries_fn)
   256→        obj_constructor.set("assign", assign_fn)
   257→        obj_constructor.set("getPrototypeOf", get_prototype_of)
   258→        obj_constructor.set("setPrototypeOf", set_prototype_of)
   259→        obj_constructor.set("defineProperty", define_property)
   260→        obj_constructor.set("defineProperties", define_properties)
   261→        obj_constructor.set("create", create_fn)
   262→        obj_constructor.set("getOwnPropertyDescriptor", get_own_property_descriptor)
   263→        obj_constructor.set("prototype", object_prototype)
   264→
   265→        return obj_constructor
   266→
   267→    def _create_array_constructor(self) -> JSCallableObject:
   268→        """Create the Array constructor with static methods."""
   269→        # Create Array.prototype (inherits from Object.prototype)

typeof Object.prototype: object
Object.prototype.constructor === Object: True

FAILED: JSTypeError: TypeError: undefined is not a function

1. Error passed
2. Object passed
3. constructor passed
4. getPrototypeOf passed
5. defineProperty passed
6. getter passed
7. setter passed
8. Object.create passed
9. setPrototypeOf passed
10. toString passed
test() passed!

1. call passed
2. apply passed
3. Function constructor passed
4. bind returned: function
5. bind passed
test_function passed!

Basic string passed
charAt passed
substring passed
unicode passed
test_string passed!

floor/ceil passed
Error: TypeError: undefined is not a function

311:        math_obj.set("PI", math.pi)
312:        math_obj.set("E", math.e)
313:        math_obj.set("LN2", math.log(2))
314:        math_obj.set("LN10", math.log(10))
315:        math_obj.set("LOG2E", 1 / math.log(2))
316:        math_obj.set("LOG10E", 1 / math.log(10))
317:        math_obj.set("SQRT2", math.sqrt(2))
318:        math_obj.set("SQRT1_2", math.sqrt(0.5))
422:        math_obj.set("abs", abs_fn)
423:        math_obj.set("floor", floor_fn)
424:        math_obj.set("ceil", ceil_fn)
425:        math_obj.set("round", round_fn)
426:        math_obj.set("trunc", trunc_fn)
427:        math_obj.set("min", min_fn)
428:        math_obj.set("max", max_fn)
429:        math_obj.set("pow", pow_fn)
430:        math_obj.set("sqrt", sqrt_fn)
431:        math_obj.set("sin", sin_fn)
432:        math_obj.set("cos", cos_fn)
433:        math_obj.set("tan", tan_fn)
434:        math_obj.set("asin", asin_fn)
435:        math_obj.set("acos", acos_fn)
436:        math_obj.set("atan", atan_fn)
437:        math_obj.set("atan2", atan2_fn)
438:        math_obj.set("log", log_fn)
439:        math_obj.set("exp", exp_fn)
440:        math_obj.set("random", random_fn)
441:        math_obj.set("sign", sign_fn)

   410→
   411→        def sign_fn(*args):
   412→            x = to_number(args[0]) if args else float('nan')
   413→            if math.isnan(x):
   414→                return float('nan')
   415→            if x > 0:
   416→                return 1
   417→            if x < 0:
   418→                return -1
   419→            return 0
   420→
   421→        # Set all methods
   422→        math_obj.set("abs", abs_fn)
   423→        math_obj.set("floor", floor_fn)
   424→        math_obj.set("ceil", ceil_fn)
   425→        math_obj.set("round", round_fn)
   426→        math_obj.set("trunc", trunc_fn)
   427→        math_obj.set("min", min_fn)
   428→        math_obj.set("max", max_fn)
   429→        math_obj.set("pow", pow_fn)
   430→        math_obj.set("sqrt", sqrt_fn)
   431→        math_obj.set("sin", sin_fn)
   432→        math_obj.set("cos", cos_fn)
   433→        math_obj.set("tan", tan_fn)
   434→        math_obj.set("asin", asin_fn)
   435→        math_obj.set("acos", acos_fn)
   436→        math_obj.set("atan", atan_fn)
   437→        math_obj.set("atan2", atan2_fn)
   438→        math_obj.set("log", log_fn)
   439→        math_obj.set("exp", exp_fn)

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   407→
   408→        def random_fn(*args):
   409→            return random.random()
   410→
   411→        def sign_fn(*args):
   412→            x = to_number(args[0]) if args else float('nan')
   413→            if math.isnan(x):
   414→                return float('nan')
   415→            if x > 0:
   416→                return 1
   417→            if x < 0:
   418→                return -1
   419→            return 0
   420→
   421→        def imul_fn(*args):
   422→            # 32-bit integer multiplication
   423→            a = int(to_number(args[0])) if args else 0
   424→            b = int(to_number(args[1])) if len(args) > 1 else 0
   425→            # Convert to 32-bit signed integers
   426→            a = a & 0xFFFFFFFF
   427→            b = b & 0xFFFFFFFF
   428→            if a >= 0x80000000:
   429→                a -= 0x100000000
   430→            if b >= 0x80000000:
   431→                b -= 0x100000000
   432→            result = (a * b) & 0xFFFFFFFF
   433→            if result >= 0x80000000:
   434→                result -= 0x100000000
   435→            return result
   436→
   437→        def fround_fn(*args):
   438→            # Convert to 32-bit float
   439→            import struct
   440→            x = to_number(args[0]) if args else float('nan')
   441→            # Pack as 32-bit float and unpack as 64-bit
   442→            packed = struct.pack('f', x)
   443→            return struct.unpack('f', packed)[0]
   444→
   445→        def clz32_fn(*args):
   446→            # Count leading zeros in 32-bit integer
   447→            x = int(to_number(args[0])) if args else 0
   448→            x = x & 0xFFFFFFFF
   449→            if x == 0:
   450→                return 32
   451→            count = 0
   452→            while (x & 0x80000000) == 0:
   453→                count += 1
   454→                x <<= 1
   455→            return count
   456→
   457→        def hypot_fn(*args):
   458→            if not args:
   459→                return 0
   460→            nums = [to_number(a) for a in args]
   461→            return math.hypot(*nums)
   462→
   463→        def cbrt_fn(*args):
   464→            x = to_number(args[0]) if args else float('nan')
   465→            if x < 0:
   466→                return -(-x) ** (1/3)
   467→            return x ** (1/3)
   468→
   469→        def log2_fn(*args):
   470→            x = to_number(args[0]) if args else float('nan')
   471→            return math.log2(x) if x > 0 else float('nan')
   472→
   473→        def log10_fn(*args):
   474→            x = to_number(args[0]) if args else float('nan')
   475→            return math.log10(x) if x > 0 else float('nan')
   476→
   477→        def expm1_fn(*args):
   478→            x = to_number(args[0]) if args else float('nan')
   479→            return math.expm1(x)
   480→
   481→        def log1p_fn(*args):
   482→            x = to_number(args[0]) if args else float('nan')
   483→            return math.log1p(x) if x > -1 else float('nan')
   484→
   485→        # Set all methods
   486→        math_obj.set("abs", abs_fn)
   487→        math_obj.set("floor", floor_fn)
   488→        math_obj.set("ceil", ceil_fn)
   489→        math_obj.set("round", round_fn)

   495→        math_obj.set("sin", sin_fn)
   496→        math_obj.set("cos", cos_fn)
   497→        math_obj.set("tan", tan_fn)
   498→        math_obj.set("asin", asin_fn)
   499→        math_obj.set("acos", acos_fn)
   500→        math_obj.set("atan", atan_fn)
   501→        math_obj.set("atan2", atan2_fn)
   502→        math_obj.set("log", log_fn)
   503→        math_obj.set("exp", exp_fn)
   504→        math_obj.set("random", random_fn)
   505→        math_obj.set("sign", sign_fn)
   506→
   507→        return math_obj
   508→
   509→    def _create_json_object(self) -> JSObject:
   510→        """Create the JSON global object."""
   511→        json_obj = JSObject()
   512→        ctx = self  # Reference for closures
   513→
   514→        def parse_fn(*args):
   515→            text = to_string(args[0]) if args else ""
   516→            try:
   517→                py_value = json.loads(text)
   518→                return ctx._to_js(py_value)
   519→            except json.JSONDecodeError as e:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   500→        math_obj.set("atan", atan_fn)
   501→        math_obj.set("atan2", atan2_fn)
   502→        math_obj.set("log", log_fn)
   503→        math_obj.set("exp", exp_fn)
   504→        math_obj.set("random", random_fn)
   505→        math_obj.set("sign", sign_fn)
   506→        math_obj.set("imul", imul_fn)
   507→        math_obj.set("fround", fround_fn)
   508→        math_obj.set("clz32", clz32_fn)
   509→        math_obj.set("hypot", hypot_fn)
   510→        math_obj.set("cbrt", cbrt_fn)
   511→        math_obj.set("log2", log2_fn)
   512→        math_obj.set("log10", log10_fn)
   513→        math_obj.set("expm1", expm1_fn)
   514→        math_obj.set("log1p", log1p_fn)
   515→
   516→        return math_obj
   517→
   518→    def _create_json_object(self) -> JSObject:
   519→        """Create the JSON global object."""
   520→        json_obj = JSObject()

Math.imul(0x12345678, 123): -1088058456
Math.fround(0.1): 0.10000000149011612

FAILED: JSTypeError: TypeError: undefined is not a function

Testing Uint8Array...
Error: ReferenceError: Uint8Array is not defined

487:    a = new Uint8Array(4);
495:    a = new Int8Array(3);
499:    a = new Int32Array(3);
504:    a = new Uint8ClampedArray(4);
511:    buffer = new ArrayBuffer(16);
513:    a = new Uint32Array(buffer, 12, 1);
517:    a = new Uint16Array(buffer, 2);
520:    a = new Float32Array(buffer, 8, 1);
523:    a = new Uint8Array(buffer);
529:    a = new Uint8Array([1, 2, 3, 4]);
536:    a = new Uint8Array([1, 2, 3, 4]);

   830→}
   831→
   832→test();
   833→test_string();
   834→test_string2();
   835→test_array();
   836→test_array_ext();
   837→test_enum();
   838→test_function();
   839→test_number();
   840→test_math();
   841→test_typed_array();
   842→test_global_eval();
   843→test_json();
   844→test_regexp();
   845→test_line_column_numbers();
   846→test_large_eval_parse_stack();
   847→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

FAILED: JSTypeError: TypeError: undefined is not a function

test(): FAILED - JSTypeError: TypeError: undefined is not a function

Starting test()...
Traceback (most recent call last):
  File "<stdin>", line 16, in <module>
  File "/home/user/mquickjs-python/src/mquickjs_python/context.py", line 905, in eval
    result = vm.run(compiled)
             ^^^^^^^^^^^^^^^^
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 108, in run
    return self._execute()
           ^^^^^^^^^^^^^^^
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 165, in _execute
    self._execute_opcode(op, arg, frame)
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 563, in _execute_opcode
    self._call_method(method, this_val, args)
  File "/home/user/mquickjs-python/src/mquickjs_python/vm.py", line 1604, in _call_method
    raise JSTypeError(f"{method} is not a function")
mquickjs_python.errors.JSTypeError: TypeError: undefined is not a function

1. Testing Object.prototype.toString.call(1)...
Error: TypeError: undefined is not a function

    89→    def _create_object_constructor(self) -> JSCallableObject:
    90→        """Create the Object constructor with static methods."""
    91→        # Create Object.prototype first
    92→        object_prototype = JSObject()
    93→
    94→        # Constructor function - new Object() creates empty object
    95→        def object_constructor(*args):
    96→            obj = JSObject()
    97→            obj._prototype = object_prototype
    98→            return obj
    99→
   100→        # Create a callable object that acts as constructor
   101→        obj_constructor = JSCallableObject(object_constructor)
   102→        obj_constructor._prototype = object_prototype
   103→        object_prototype.set("constructor", obj_constructor)
   104→
   105→        # Store for other constructors to use
   106→        self._object_prototype = object_prototype
   107→
   108→        def keys_fn(*args):
   109→            obj = args[0] if args else UNDEFINED
   110→            if not isinstance(obj, JSObject):
   111→                return JSArray()
   112→            arr = JSArray()
   113→            arr._elements = list(obj.keys())
   114→            return arr
   115→
   116→        def values_fn(*args):
   117→            obj = args[0] if args else UNDEFINED
   118→            if not isinstance(obj, JSObject):

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    96→            obj = JSObject()
    97→            obj._prototype = object_prototype
    98→            return obj
    99→
   100→        # Create a callable object that acts as constructor
   101→        obj_constructor = JSCallableObject(object_constructor)
   102→        obj_constructor._prototype = object_prototype
   103→        object_prototype.set("constructor", obj_constructor)
   104→
   105→        # Add Object.prototype methods
   106→        def proto_toString(this_val, *args):
   107→            # Get the [[Class]] internal property
   108→            if this_val is UNDEFINED:
   109→                return "[object Undefined]"
   110→            if this_val is NULL:
   111→                return "[object Null]"
   112→            if isinstance(this_val, bool):
   113→                return "[object Boolean]"
   114→            if isinstance(this_val, (int, float)):
   115→                return "[object Number]"
   116→            if isinstance(this_val, str):
   117→                return "[object String]"
   118→            if isinstance(this_val, JSArray):
   119→                return "[object Array]"
   120→            if callable(this_val) or isinstance(this_val, JSCallableObject):
   121→                return "[object Function]"
   122→            return "[object Object]"
   123→
   124→        def proto_hasOwnProperty(this_val, *args):
   125→            prop = to_string(args[0]) if args else ""
   126→            if isinstance(this_val, JSObject):
   127→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   128→            return False
   129→
   130→        def proto_valueOf(this_val, *args):
   131→            return this_val
   132→
   133→        def proto_isPrototypeOf(this_val, *args):
   134→            obj = args[0] if args else UNDEFINED
   135→            if not isinstance(obj, JSObject):
   136→                return False
   137→            proto = getattr(obj, '_prototype', None)
   138→            while proto is not None:
   139→                if proto is this_val:
   140→                    return True
   141→                proto = getattr(proto, '_prototype', None)
   142→            return False
   143→
   144→        # These methods need special handling for 'this'
   145→        from .values import JSBoundMethod
   146→        object_prototype.set("toString", JSBoundMethod(proto_toString))
   147→        object_prototype.set("hasOwnProperty", JSBoundMethod(proto_hasOwnProperty))
   148→        object_prototype.set("valueOf", JSBoundMethod(proto_valueOf))
   149→        object_prototype.set("isPrototypeOf", JSBoundMethod(proto_isPrototypeOf))
   150→
   151→        # Store for other constructors to use
   152→        self._object_prototype = object_prototype
   153→
   154→        def keys_fn(*args):
   155→            obj = args[0] if args else UNDEFINED
   156→            if not isinstance(obj, JSObject):

     1→"""JavaScript value types."""
     2→
     3→from typing import Any, Dict, List, Optional, Union, TYPE_CHECKING
     4→import math
     5→
     6→if TYPE_CHECKING:
     7→    from .context import JSContext
     8→
     9→
    10→class JSUndefined:
    11→    """JavaScript undefined value (singleton)."""
    12→
    13→    _instance: Optional["JSUndefined"] = None
    14→
    15→    def __new__(cls) -> "JSUndefined":
    16→        if cls._instance is None:
    17→            cls._instance = super().__new__(cls)
    18→        return cls._instance
    19→
    20→    def __repr__(self) -> str:
    21→        return "undefined"
    22→
    23→    def __str__(self) -> str:
    24→        return "undefined"
    25→
    26→    def __bool__(self) -> bool:
    27→        return False
    28→
    29→
    30→class JSNull:
    31→    """JavaScript null value (singleton)."""
    32→
    33→    _instance: Optional["JSNull"] = None
    34→
    35→    def __new__(cls) -> "JSNull":
    36→        if cls._instance is None:
    37→            cls._instance = super().__new__(cls)
    38→        return cls._instance
    39→
    40→    def __repr__(self) -> str:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

386 /home/user/mquickjs-python/src/mquickjs_python/values.py

   360→
   361→    def exec(self, string: str):
   362→        """Execute a search for a match."""
   363→        self._internal.lastIndex = self.lastIndex
   364→        result = self._internal.exec(string)
   365→        self.lastIndex = self._internal.lastIndex
   366→
   367→        if result is None:
   368→            return NULL
   369→
   370→        # Convert to JSArray with match result properties
   371→        arr = JSArray()
   372→        for i in range(len(result)):
   373→            val = result[i]
   374→            if val is None:
   375→                arr._elements.append(UNDEFINED)
   376→            else:
   377→                arr._elements.append(val)
   378→
   379→        # Add match result properties
   380→        arr.set("index", result.index)
   381→        arr.set("input", result.input)
   382→
   383→        return arr
   384→
   385→    def __repr__(self) -> str:
   386→        return f"/{self._pattern}/{self._flags}"
   387→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/values.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   381→        arr.set("input", result.input)
   382→
   383→        return arr
   384→
   385→    def __repr__(self) -> str:
   386→        return f"/{self._pattern}/{self._flags}"
   387→
   388→
   389→class JSBoundMethod:
   390→    """A method that expects 'this' as the first argument when called."""
   391→
   392→    def __init__(self, fn):
   393→        self._fn = fn
   394→
   395→    def __call__(self, this_val, *args):
   396→        return self._fn(this_val, *args)
   397→

1596:    def _call_method(self, method: JSValue, this_val: JSValue, args: List[JSValue]) -> None:

  1596→    def _call_method(self, method: JSValue, this_val: JSValue, args: List[JSValue]) -> None:
  1597→        """Call a method."""
  1598→        if isinstance(method, JSFunction):
  1599→            self._invoke_js_function(method, args, this_val)
  1600→        elif callable(method):
  1601→            result = method(*args)
  1602→            self.stack.append(result if result is not None else UNDEFINED)
  1603→        else:
  1604→            raise JSTypeError(f"{method} is not a function")
  1605→
  1606→    def _call_callback(self, callback: JSValue, args: List[JSValue], this_val: JSValue = None) -> JSValue:
  1607→        """Call a callback function synchronously and return the result."""
  1608→        if isinstance(callback, JSFunction):
  1609→            # Save current stack position AND call stack depth
  1610→            stack_len = len(self.stack)
  1611→            call_stack_len = len(self.call_stack)
  1612→
  1613→            # Invoke the function
  1614→            self._invoke_js_function(callback, args, this_val if this_val is not None else UNDEFINED)
  1615→
  1616→            # Execute until the call returns (back to original call stack depth)
  1617→            while len(self.call_stack) > call_stack_len:
  1618→                self._check_limits()
  1619→                frame = self.call_stack[-1]
  1620→                func = frame.func
  1621→                bytecode = func.bytecode
  1622→
  1623→                if frame.ip >= len(bytecode):
  1624→                    self.call_stack.pop()
  1625→                    if len(self.stack) > stack_len:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1592→            self.stack.append(result if result is not None else UNDEFINED)
  1593→        else:
  1594→            raise JSTypeError(f"{callee} is not a function")
  1595→
  1596→    def _call_method(self, method: JSValue, this_val: JSValue, args: List[JSValue]) -> None:
  1597→        """Call a method."""
  1598→        from .values import JSBoundMethod
  1599→        if isinstance(method, JSFunction):
  1600→            self._invoke_js_function(method, args, this_val)
  1601→        elif isinstance(method, JSBoundMethod):
  1602→            # JSBoundMethod expects this_val as first argument
  1603→            result = method(this_val, *args)
  1604→            self.stack.append(result if result is not None else UNDEFINED)
  1605→        elif callable(method):
  1606→            result = method(*args)
  1607→            self.stack.append(result if result is not None else UNDEFINED)
  1608→        else:
  1609→            raise JSTypeError(f"{method} is not a function")
  1610→
  1611→    def _call_callback(self, callback: JSValue, args: List[JSValue], this_val: JSValue = None) -> JSValue:
  1612→        """Call a callback function synchronously and return the result."""
  1613→        if isinstance(callback, JSFunction):

typeof Object.prototype.toString: undefined

Object.keys(Object.prototype): ['constructor', 'toString', 'hasOwnProperty', 'valueOf', 'isPrototypeOf']

typeof Object.prototype.toString: undefined
Object.prototype.toString: undefined
({}).toString(): [object Object]

proto: object
proto.toString: undefined
proto keys: [object Object]
proto has toString: true

   840→        if isinstance(a, (int, float)) and isinstance(b, str):
   841→            return a == to_number(b)
   842→
   843→        # Boolean to number
   844→        if isinstance(a, bool):
   845→            return self._abstract_equals(1 if a else 0, b)
   846→        if isinstance(b, bool):
   847→            return self._abstract_equals(a, 1 if b else 0)
   848→
   849→        return False
   850→
   851→    def _get_property(self, obj: JSValue, key: JSValue) -> JSValue:
   852→        """Get property from object."""
   853→        if obj is UNDEFINED or obj is NULL:
   854→            raise JSTypeError(f"Cannot read property of {obj}")
   855→
   856→        key_str = to_string(key) if not isinstance(key, str) else key
   857→
   858→        if isinstance(obj, JSArray):
   859→            # Array index access
   860→            try:
   861→                idx = int(key_str)
   862→                if idx >= 0:
   863→                    return obj.get_index(idx)
   864→            except ValueError:
   865→                pass
   866→            if key_str == "length":
   867→                return obj.length
   868→            # Built-in array methods
   869→            array_methods = [
   870→                "push", "pop", "shift", "unshift", "toString", "join",
   871→                "map", "filter", "reduce", "forEach", "indexOf", "lastIndexOf",
   872→                "find", "findIndex", "some", "every", "concat", "slice",
   873→                "reverse", "includes",
   874→            ]
   875→            if key_str in array_methods:
   876→                return self._make_array_method(obj, key_str)
   877→            return obj.get(key_str)
   878→
   879→        if isinstance(obj, JSRegExp):
   880→            # RegExp methods and properties
   881→            if key_str in ("test", "exec"):
   882→                return self._make_regexp_method(obj, key_str)
   883→            # RegExp properties
   884→            if key_str in ("source", "flags", "global", "ignoreCase", "multiline",
   885→                          "dotAll", "unicode", "sticky", "lastIndex"):
   886→                return obj.get(key_str)
   887→            return UNDEFINED
   888→
   889→        if isinstance(obj, JSFunction):
   890→            # Function methods
   891→            if key_str in ("bind", "call", "apply", "toString"):
   892→                return self._make_function_method(obj, key_str)
   893→            if key_str == "length":
   894→                return len(obj.params)
   895→            if key_str == "name":
   896→                return obj.name
   897→            if key_str == "prototype":
   898→                return getattr(obj, '_prototype', UNDEFINED) or UNDEFINED
   899→            return UNDEFINED
   900→
   901→        if isinstance(obj, JSObject):
   902→            # Built-in Object methods
   903→            if key_str in ("toString", "hasOwnProperty"):
   904→                return self._make_object_method(obj, key_str)
   905→            # Check for getter
   906→            getter = obj.get_getter(key_str)
   907→            if getter is not None:
   908→                return self._invoke_getter(getter, obj)
   909→            return obj.get(key_str)
   910→
   911→        if isinstance(obj, str):
   912→            # String character access
   913→            try:
   914→                idx = int(key_str)
   915→                if 0 <= idx < len(obj):
   916→                    return obj[idx]
   917→            except ValueError:
   918→                pass
   919→            if key_str == "length":

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Type of proto: <class 'mquickjs_python.values.JSObject'>
Proto properties: ['constructor', 'toString', 'hasOwnProperty', 'valueOf', 'isPrototypeOf']
Proto toString: <mquickjs_python.values.JSBoundMethod object at 0x7ee15915a550>
Type of toString: <class 'mquickjs_python.values.JSBoundMethod'>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   897→            if key_str == "prototype":
   898→                return getattr(obj, '_prototype', UNDEFINED) or UNDEFINED
   899→            return UNDEFINED
   900→
   901→        if isinstance(obj, JSObject):
   902→            # Check for getter first
   903→            getter = obj.get_getter(key_str)
   904→            if getter is not None:
   905→                return self._invoke_getter(getter, obj)
   906→            # Check own property
   907→            if obj.has(key_str):
   908→                return obj.get(key_str)
   909→            # Check prototype chain
   910→            proto = getattr(obj, '_prototype', None)
   911→            while proto is not None:
   912→                if isinstance(proto, JSObject) and proto.has(key_str):
   913→                    return proto.get(key_str)
   914→                proto = getattr(proto, '_prototype', None)
   915→            # Built-in Object methods as fallback
   916→            if key_str in ("toString", "hasOwnProperty"):
   917→                return self._make_object_method(obj, key_str)
   918→            return UNDEFINED
   919→
   920→        if isinstance(obj, str):
   921→            # String character access
   922→            try:

typeof Object: function
Object constructor: <class 'mquickjs_python.values.JSCallableObject'>

No matches found

JSCallableObject bases: (<class 'mquickjs_python.values.JSObject'>,)
Is JSCallableObject a JSObject?: True

   968→                arr._elements.insert(i, arg)
   969→            return arr.length
   970→
   971→        def toString_fn(*args):
   972→            return ",".join(to_string(elem) for elem in arr._elements)
   973→
   974→        def join_fn(*args):
   975→            sep = "," if not args else to_string(args[0])
   976→            return sep.join(to_string(elem) for elem in arr._elements)
   977→
   978→        def map_fn(*args):
   979→            callback = args[0] if args else None
   980→            if not callback:
   981→                return JSArray()
   982→            result = JSArray()
   983→            result._elements = []
   984→            for i, elem in enumerate(arr._elements):
   985→                val = vm._call_callback(callback, [elem, i, arr])
   986→                result._elements.append(val)
   987→            return result

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

   851→    def _get_property(self, obj: JSValue, key: JSValue) -> JSValue:
   852→        """Get property from object."""
   853→        if obj is UNDEFINED or obj is NULL:
   854→            raise JSTypeError(f"Cannot read property of {obj}")
   855→
   856→        key_str = to_string(key) if not isinstance(key, str) else key
   857→
   858→        if isinstance(obj, JSArray):
   859→            # Array index access
   860→            try:
   861→                idx = int(key_str)
   862→                if idx >= 0:
   863→                    return obj.get_index(idx)
   864→            except ValueError:
   865→                pass
   866→            if key_str == "length":
   867→                return obj.length
   868→            # Built-in array methods
   869→            array_methods = [
   870→                "push", "pop", "shift", "unshift", "toString", "join",
   871→                "map", "filter", "reduce", "forEach", "indexOf", "lastIndexOf",
   872→                "find", "findIndex", "some", "every", "concat", "slice",
   873→                "reverse", "includes",
   874→            ]
   875→            if key_str in array_methods:
   876→                return self._make_array_method(obj, key_str)
   877→            return obj.get(key_str)
   878→
   879→        if isinstance(obj, JSRegExp):
   880→            # RegExp methods and properties
   881→            if key_str in ("test", "exec"):
   882→                return self._make_regexp_method(obj, key_str)
   883→            # RegExp properties
   884→            if key_str in ("source", "flags", "global", "ignoreCase", "multiline",
   885→                          "dotAll", "unicode", "sticky", "lastIndex"):
   886→                return obj.get(key_str)
   887→            return UNDEFINED
   888→
   889→        if isinstance(obj, JSFunction):
   890→            # Function methods
   891→            if key_str in ("bind", "call", "apply", "toString"):
   892→                return self._make_function_method(obj, key_str)
   893→            if key_str == "length":
   894→                return len(obj.params)
   895→            if key_str == "name":
   896→                return obj.name
   897→            if key_str == "prototype":
   898→                return getattr(obj, '_prototype', UNDEFINED) or UNDEFINED
   899→            return UNDEFINED
   900→
   901→        if isinstance(obj, JSObject):
   902→            # Check for getter first
   903→            getter = obj.get_getter(key_str)
   904→            if getter is not None:
   905→                return self._invoke_getter(getter, obj)
   906→            # Check own property
   907→            if obj.has(key_str):
   908→                return obj.get(key_str)
   909→            # Check prototype chain
   910→            proto = getattr(obj, '_prototype', None)

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Object constructor type: <class 'mquickjs_python.values.JSCallableObject'>
Is JSObject?: True
Has prototype: True
Prototype: JSObject({'constructor': JSCallableObject({'keys': <function JSContext._create_object_constructor.<locals>.keys_fn at 0x7ed9b94151c0>, 'values': <function JSContext._create_object_constructor.<locals>.values_fn at 0x7ed9b92c7920>, 'entries': <function JSContext._create_object_constructor.<locals>.entries_fn at 0x7ed9b92c79c0>, 'assign': <function JSContext._create_object_constructor.<locals>.assign_fn at 0x7ed9b92c7a60>, 'getPrototypeOf': <function JSContext._create_object_constructor.<locals>.get_prototype_of at 0x7ed9b92c7b00>, 'setPrototypeOf': <function JSContext._create_object_constructor.<locals>.set_prototype_of at 0x7ed9b92c7ba0>, 'defineProperty': <function JSContext._create_object_constructor.<locals>.define_property at 0x7ed9b92c7c40>, 'defineProperties': <function JSContext._create_object_constructor.<locals>.define_properties at 0x7ed9b92c7ce0>, 'create': <function JSContext._create_object_constructor.<locals>.create_fn at 0x7ed9b92c7d80>, 'getOwnPropertyDescriptor': <function JSContext._create_object_constructor.<locals>.get_own_property_descriptor at 0x7ed9b92c7e20>, 'prototype': JSObject({...})}), 'toString': <mquickjs_python.values.JSBoundMethod object at 0x7ed9b940e650>, 'hasOwnProperty': <mquickjs_python.values.JSBoundMethod object at 0x7ed9b940df10>, 'valueOf': <mquickjs_python.values.JSBoundMethod object at 0x7ed9b940e690>, 'isPrototypeOf': <mquickjs_python.values.JSBoundMethod object at 0x7ed9b940e750>})
Prototype type: <class 'mquickjs_python.values.JSObject'>

_get_property(JSCallableObject, 'prototype')
  -> JSObject
Error: maximum recursion depth exceeded

Result: undefined

_get_property(JSCallableObject, 'prototype') -> JSObject: JSObject
_get_property(JSObject, 'toString') -> JSBoundMethod: <mquickjs_python.values.JSBoundMethod object at 0x7ea075b9aa90>
Result: undefined

489:        elif op == OpCode.TYPEOF:
490-            a = self.stack.pop()
491-            self.stack.append(js_typeof(a))
492-
493-        elif op == OpCode.TYPEOF_NAME:
494-            # Special typeof that returns "undefined" for undeclared variables
495-            name = frame.func.constants[arg]
496-            if name in self.globals:
497-                self.stack.append(js_typeof(self.globals[name]))
498-            else:
499-                self.stack.append("undefined")

79:def js_typeof(value: JSValue) -> str:

    79→def js_typeof(value: JSValue) -> str:
    80→    """Return the JavaScript typeof for a value."""
    81→    if value is UNDEFINED:
    82→        return "undefined"
    83→    if value is NULL:
    84→        return "object"  # JavaScript quirk
    85→    if isinstance(value, bool):
    86→        return "boolean"
    87→    if isinstance(value, (int, float)):
    88→        return "number"
    89→    if isinstance(value, str):
    90→        return "string"
    91→    if isinstance(value, JSFunction):
    92→        return "function"
    93→    # JSCallableObject (like Object, Array constructors) should be "function"
    94→    if isinstance(value, JSObject) and hasattr(value, '_call_fn'):
    95→        return "function"
    96→    if isinstance(value, JSObject):
    97→        return "object"
    98→    return "undefined"
    99→
   100→
   101→def to_boolean(value: JSValue) -> bool:
   102→    """Convert a JavaScript value to boolean."""
   103→    if value is UNDEFINED or value is NULL:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/values.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    75→    """Check if value is positive or negative infinity."""
    76→    return isinstance(value, float) and math.isinf(value)
    77→
    78→
    79→def js_typeof(value: JSValue) -> str:
    80→    """Return the JavaScript typeof for a value."""
    81→    if value is UNDEFINED:
    82→        return "undefined"
    83→    if value is NULL:
    84→        return "object"  # JavaScript quirk
    85→    if isinstance(value, bool):
    86→        return "boolean"
    87→    if isinstance(value, (int, float)):
    88→        return "number"
    89→    if isinstance(value, str):
    90→        return "string"
    91→    if isinstance(value, JSFunction):
    92→        return "function"
    93→    # JSCallableObject (like Object, Array constructors) should be "function"
    94→    if isinstance(value, JSObject) and hasattr(value, '_call_fn'):
    95→        return "function"
    96→    if isinstance(value, JSObject):
    97→        return "object"
    98→    # Python callable (including JSBoundMethod)
    99→    if callable(value):
   100→        return "function"
   101→    return "undefined"
   102→
   103→
   104→def to_boolean(value: JSValue) -> bool:
   105→    """Convert a JavaScript value to boolean."""

   918→            return UNDEFINED
   919→
   920→        if isinstance(obj, str):
   921→            # String character access
   922→            try:
   923→                idx = int(key_str)
   924→                if 0 <= idx < len(obj):
   925→                    return obj[idx]
   926→            except ValueError:
   927→                pass
   928→            if key_str == "length":
   929→                return len(obj)
   930→            # String methods
   931→            string_methods = [
   932→                "charAt", "charCodeAt", "indexOf", "lastIndexOf",
   933→                "substring", "slice", "split", "toLowerCase", "toUpperCase",
   934→                "trim", "concat", "repeat", "startsWith", "endsWith",
   935→                "includes", "replace", "match", "search", "toString",
   936→            ]
   937→            if key_str in string_methods:
   938→                return self._make_string_method(obj, key_str)
   939→            return UNDEFINED
   940→
   941→        if isinstance(obj, (int, float)):
   942→            # Number methods
   943→            if key_str in ("toFixed", "toString"):
   944→                return self._make_number_method(obj, key_str)
   945→            return UNDEFINED
   946→
   947→        return UNDEFINED

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   937→            if key_str in string_methods:
   938→                return self._make_string_method(obj, key_str)
   939→            return UNDEFINED
   940→
   941→        if isinstance(obj, (int, float)):
   942→            # Number methods
   943→            if key_str in ("toFixed", "toString"):
   944→                return self._make_number_method(obj, key_str)
   945→            return UNDEFINED
   946→
   947→        # Python callable (including JSBoundMethod)
   948→        if callable(obj):
   949→            if key_str in ("call", "apply", "bind"):
   950→                return self._make_callable_method(obj, key_str)
   951→            return UNDEFINED
   952→
   953→        return UNDEFINED
   954→
   955→    def _make_array_method(self, arr: JSArray, method: str) -> Any:
   956→        """Create a bound array method."""
   957→        vm = self  # Reference for closures

1166:    def _make_function_method(self, func: JSFunction, method: str) -> Any:

  1166→    def _make_function_method(self, func: JSFunction, method: str) -> Any:
  1167→        """Create a bound function method (bind, call, apply)."""
  1168→        vm = self  # Reference for closures
  1169→
  1170→        def bind_fn(*args):
  1171→            """Create a bound function with fixed this and optional partial args."""
  1172→            bound_this = args[0] if args else UNDEFINED
  1173→            bound_args = list(args[1:]) if len(args) > 1 else []
  1174→
  1175→            # Create a new function that wraps the original
  1176→            bound_func = JSFunction(
  1177→                name=func.name,
  1178→                params=func.params[len(bound_args):],  # Remaining params after bound args
  1179→                bytecode=func.bytecode,
  1180→            )
  1181→            # Copy compiled function reference
  1182→            if hasattr(func, '_compiled'):
  1183→                bound_func._compiled = func._compiled
  1184→            # Copy closure cells
  1185→            if hasattr(func, '_closure_cells'):
  1186→                bound_func._closure_cells = func._closure_cells
  1187→            # Store binding info on the function
  1188→            bound_func._bound_this = bound_this
  1189→            bound_func._bound_args = bound_args
  1190→            bound_func._original_func = func
  1191→            return bound_func
  1192→
  1193→        def call_fn(*args):
  1194→            """Call function with explicit this and individual arguments."""
  1195→            this_val = args[0] if args else UNDEFINED
  1196→            call_args = list(args[1:]) if len(args) > 1 else []
  1197→
  1198→            # Call the function with the specified this
  1199→            return vm._call_function_internal(func, this_val, call_args)
  1200→
  1201→        def apply_fn(*args):
  1202→            """Call function with explicit this and array of arguments."""
  1203→            this_val = args[0] if args else UNDEFINED
  1204→            arg_array = args[1] if len(args) > 1 and args[1] is not NULL else None
  1205→
  1206→            # Convert array argument to list
  1207→            if arg_array is None:
  1208→                apply_args = []
  1209→            elif isinstance(arg_array, JSArray):
  1210→                apply_args = arg_array._elements[:]
  1211→            elif isinstance(arg_array, (list, tuple)):
  1212→                apply_args = list(arg_array)
  1213→            else:
  1214→                apply_args = []
  1215→
  1216→            return vm._call_function_internal(func, this_val, apply_args)
  1217→
  1218→        def toString_fn(*args):
  1219→            return f"function {func.name}() {{ [native code] }}"
  1220→
  1221→        methods = {
  1222→            "bind": bind_fn,
  1223→            "call": call_fn,
  1224→            "apply": apply_fn,
  1225→            "toString": toString_fn,

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

  1225→            "toString": toString_fn,
  1226→        }
  1227→        return methods.get(method, lambda *args: UNDEFINED)
  1228→
  1229→    def _call_function_internal(
  1230→        self, func: JSFunction, this_val: JSValue, args: List[JSValue]
  1231→    ) -> JSValue:
  1232→        """Internal method to call a function with explicit this and args."""
  1233→        # Handle bound functions
  1234→        if hasattr(func, '_bound_this'):

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1217→
  1218→        def toString_fn(*args):
  1219→            return f"function {func.name}() {{ [native code] }}"
  1220→
  1221→        methods = {
  1222→            "bind": bind_fn,
  1223→            "call": call_fn,
  1224→            "apply": apply_fn,
  1225→            "toString": toString_fn,
  1226→        }
  1227→        return methods.get(method, lambda *args: UNDEFINED)
  1228→
  1229→    def _make_callable_method(self, fn: Any, method: str) -> Any:
  1230→        """Create a method for Python callables (including JSBoundMethod)."""
  1231→        from .values import JSBoundMethod
  1232→
  1233→        def call_fn(*args):
  1234→            """Call with explicit this and individual arguments."""
  1235→            this_val = args[0] if args else UNDEFINED
  1236→            call_args = list(args[1:]) if len(args) > 1 else []
  1237→            # JSBoundMethod expects this as first arg
  1238→            if isinstance(fn, JSBoundMethod):
  1239→                return fn(this_val, *call_args)
  1240→            # Regular Python callable doesn't use this
  1241→            return fn(*call_args)
  1242→
  1243→        def apply_fn(*args):
  1244→            """Call with explicit this and array of arguments."""
  1245→            this_val = args[0] if args else UNDEFINED
  1246→            arg_array = args[1] if len(args) > 1 and args[1] is not NULL else None
  1247→
  1248→            if arg_array is None:
  1249→                apply_args = []
  1250→            elif isinstance(arg_array, JSArray):
  1251→                apply_args = arg_array._elements[:]
  1252→            elif isinstance(arg_array, (list, tuple)):
  1253→                apply_args = list(arg_array)
  1254→            else:
  1255→                apply_args = []
  1256→
  1257→            if isinstance(fn, JSBoundMethod):
  1258→                return fn(this_val, *apply_args)
  1259→            return fn(*apply_args)
  1260→
  1261→        def bind_fn(*args):
  1262→            """Create a bound function with fixed this."""
  1263→            bound_this = args[0] if args else UNDEFINED
  1264→            bound_args = list(args[1:]) if len(args) > 1 else []
  1265→
  1266→            if isinstance(fn, JSBoundMethod):
  1267→                def bound(*call_args):
  1268→                    return fn(bound_this, *bound_args, *call_args)
  1269→            else:
  1270→                def bound(*call_args):
  1271→                    return fn(*bound_args, *call_args)
  1272→            return bound
  1273→
  1274→        methods = {
  1275→            "call": call_fn,
  1276→            "apply": apply_fn,
  1277→            "bind": bind_fn,
  1278→        }
  1279→        return methods.get(method, lambda *args: UNDEFINED)
  1280→
  1281→    def _call_function_internal(
  1282→        self, func: JSFunction, this_val: JSValue, args: List[JSValue]
  1283→    ) -> JSValue:
  1284→        """Internal method to call a function with explicit this and args."""
  1285→        # Handle bound functions

Object.prototype.toString.call(1): [object Number]
Object.prototype.toString.call(null): [object Null]
Object.prototype.toString.call([]): [object Array]

tests/test_string_regex.py ...................                           [ 83%]
tests/test_vm.py ....................................................... [ 97%]
..........                                                               [100%]

======================== 395 passed, 4 xfailed in 4.65s ========================

FAILED: JSError: Error: assertion failed: got boolean:|false|, expected boolean:|true|

test(): FAILED - JSError: Error: assertion failed: got boolean:|false|, expected boolean:|true|

1. Error passed
2. Object passed
3. constructor passed
4. getPrototypeOf passed
5. defineProperty passed
6. getter passed
7. setter passed
8. Object.create passed
9. setPrototypeOf passed
10. toString passed
11. toString.call passed
Testing hasOwnProperty...
a.hasOwnProperty: function
a.hasOwnProperty(x): true
12. hasOwnProperty passed
All tests passed!

Testing array hasOwnProperty...
[1,2].hasOwnProperty(1): False
[1,2].hasOwnProperty(2): False

   124→        def proto_hasOwnProperty(this_val, *args):
   125→            prop = to_string(args[0]) if args else ""
   126→            if isinstance(this_val, JSObject):
   127→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   128→            return False
   129→
   130→        def proto_valueOf(this_val, *args):
   131→            return this_val
   132→
   133→        def proto_isPrototypeOf(this_val, *args):
   134→            obj = args[0] if args else UNDEFINED
   135→            if not isinstance(obj, JSObject):
   136→                return False
   137→            proto = getattr(obj, '_prototype', None)
   138→            while proto is not None:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   120→            if callable(this_val) or isinstance(this_val, JSCallableObject):
   121→                return "[object Function]"
   122→            return "[object Object]"
   123→
   124→        def proto_hasOwnProperty(this_val, *args):
   125→            prop = to_string(args[0]) if args else ""
   126→            if isinstance(this_val, JSArray):
   127→                # For arrays, check both properties and array indices
   128→                try:
   129→                    idx = int(prop)
   130→                    if 0 <= idx < len(this_val._elements):
   131→                        return True
   132→                except (ValueError, TypeError):
   133→                    pass
   134→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   135→            if isinstance(this_val, JSObject):
   136→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   137→            return False
   138→
   139→        def proto_valueOf(this_val, *args):
   140→            return this_val
   141→

[1,2].hasOwnProperty(1): True
[1,2].hasOwnProperty(2): False

FAILED: JSError: Error: assertion failed: got number:|1|, expected number:|2| (unicode)

a: 􏿿
a.length: 1
a[0]: 􏿿
a[1]: undefined

FAILED: JSError: Error: assertion failed: got number:|1|, expected number:|2| (unicode)

Testing surrogate pair length...
a: 􏿿
Expected length 2, got: 1
Error: Error: assertion failed: got number:|1|, expected number:|2| (unicode)

350:    a = "\u{10ffff}";
353:    assert(a.codePointAt(0), 0x10ffff);
355:    assert(String.fromCodePoint(0x10ffff), a);

FAILED: JSTypeError: TypeError: undefined is not a function

test(): PASSED
test_string(): FAILED - JSError: Error: assertion failed: got number:|1|, expected number:|2| (unicode)

test(): PASSED
test_array(): FAILED - JSError: Error: assertion failed: got boolean:|false|, expected boolean:|true|
test_array_ext(): FAILED - JSReferenceError: ReferenceError: TypeError is not defined
test_enum(): PASSED
test_function(): PASSED
test_number(): FAILED - JSError: Error: assertion failed: got number:|NaN|, expected number:|Infinity|
test_math(): PASSED
test_global_eval(): FAILED - JSReferenceError: ReferenceError: z is not defined
test_json(): FAILED - JSError: Error: assertion failed: got string:|{"x":1,"y":null,"z":2}|, expected string:|{"x":1,"z":2}|
test_regexp(): FAILED - RegExpError: Invalid control character escape
test_line_column_numbers(): FAILED - JSReferenceError: ReferenceError: SyntaxError is not defined
test_large_eval_parse_stack(): FAILED - JSError: Error: EvalError: maximum recursion depth exceeded in comparison

tests/test_string_regex.py ...................                           [ 83%]
tests/test_vm.py ....................................................... [ 97%]
..........                                                               [100%]

======================== 395 passed, 4 xfailed in 4.53s ========================

3 files changed, 219 insertions(+), 5 deletions(-)

branch 'claude/python-mquickjs-port-uPKcc' set up to track 'origin/claude/python-mquickjs-port-uPKcc'.
To http://127.0.0.1:49259/git/simonw/mquickjs-python
   19e8906..60f7b77  claude/python-mquickjs-port-uPKcc -> claude/python-mquickjs-port-uPKcc

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

50:        self._globals["Error"] = self._error_constructor
51-
52-        # Math object
53-        self._globals["Math"] = self._create_math_object()
54-
55-        # JSON object

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    46→
    47→        # Basic type constructors (minimal implementations)
    48→        self._globals["Object"] = self._create_object_constructor()
    49→        self._globals["Array"] = self._create_array_constructor()
    50→        self._globals["Error"] = self._create_error_constructor("Error")
    51→        self._globals["TypeError"] = self._create_error_constructor("TypeError")
    52→        self._globals["SyntaxError"] = self._create_error_constructor("SyntaxError")
    53→        self._globals["ReferenceError"] = self._create_error_constructor("ReferenceError")
    54→        self._globals["RangeError"] = self._create_error_constructor("RangeError")
    55→        self._globals["URIError"] = self._create_error_constructor("URIError")
    56→        self._globals["EvalError"] = self._create_error_constructor("EvalError")
    57→
    58→        # Math object
    59→        self._globals["Math"] = self._create_math_object()
    60→
    61→        # JSON object
    62→        self._globals["JSON"] = self._create_json_object()

360:    def _error_constructor(self, message: JSValue = UNDEFINED) -> JSObject:
361-        """Error constructor."""
362-        err = JSObject()
363-        err.set("message", to_string(message) if message is not UNDEFINED else "")
364-        err.set("name", "Error")
365-        return err
366-

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   356→        arr_constructor.set("isArray", is_array)
   357→
   358→        return arr_constructor
   359→
   360→    def _create_error_constructor(self, error_name: str) -> JSCallableObject:
   361→        """Create an Error constructor (Error, TypeError, SyntaxError, etc.)."""
   362→        def error_constructor(*args):
   363→            message = args[0] if args else UNDEFINED
   364→            err = JSObject()
   365→            err.set("message", to_string(message) if message is not UNDEFINED else "")
   366→            err.set("name", error_name)
   367→            err.set("stack", "")  # Stack trace placeholder
   368→            return err
   369→
   370→        constructor = JSCallableObject(error_constructor)
   371→        constructor._name = error_name
   372→
   373→        # Add prototype
   374→        error_prototype = JSObject()
   375→        error_prototype.set("name", error_name)
   376→        error_prototype.set("message", "")
   377→        error_prototype.set("constructor", constructor)
   378→        constructor.set("prototype", error_prototype)
   379→
   380→        return constructor
   381→
   382→    def _create_math_object(self) -> JSObject:
   383→        """Create the Math global object."""
   384→        math_obj = JSObject()

typeof TypeError: function
new TypeError("test").name: TypeError
new TypeError("test").message: test

tests/test_string_regex.py ...................                           [ 83%]
tests/test_vm.py ....................................................... [ 97%]
..........                                                               [100%]

======================== 395 passed, 4 xfailed in 4.56s ========================

test(): PASSED
test_array(): FAILED - JSError: Error: assertion failed: got boolean:|false|, expected boolean:|true|
test_array_ext(): FAILED - JSError: Error: expected exception
test_enum(): PASSED
test_function(): PASSED
test_number(): FAILED - JSError: Error: assertion failed: got number:|NaN|, expected number:|Infinity|
test_math(): PASSED
test_global_eval(): FAILED - JSReferenceError: ReferenceError: z is not defined
test_json(): FAILED - JSError: Error: assertion failed: got string:|{"x":1,"y":null,"z":2}|, expected string:|{"x":1,"z":2}|
test_regexp(): FAILED - RegExpError: Invalid control character escape
test_line_column_numbers(): FAILED - JSError: Error: EvalError: ReferenceError: a is not defined
test_large_eval_parse_stack(): FAILED - JSError: Error: EvalError: maximum recursion depth exceeded in comparison

1 file changed, 28 insertions(+), 7 deletions(-)

JSON.stringify({x: 1, y: undefined, z:2}): {"x":1,"y":null,"z":2}

1009:    def _to_python(self, value: JSValue) -> Any:
1010-        """Convert a JavaScript value to Python."""
1011-        if value is UNDEFINED:
1012-            return None
1013-        if value is NULL:
1014-            return None
1015-        if isinstance(value, bool):
1016-            return value
1017-        if isinstance(value, (int, float)):
1018-            return value
1019-        if isinstance(value, str):
1020-            return value
1021-        if isinstance(value, JSArray):
1022-            return [self._to_python(elem) for elem in value._elements]
1023-        if isinstance(value, JSObject):
1024-            return {k: self._to_python(v) for k, v in value._properties.items()}

   595→        """Create the JSON global object."""
   596→        json_obj = JSObject()
   597→        ctx = self  # Reference for closures
   598→
   599→        def parse_fn(*args):
   600→            text = to_string(args[0]) if args else ""
   601→            try:
   602→                py_value = json.loads(text)
   603→                return ctx._to_js(py_value)
   604→            except json.JSONDecodeError as e:
   605→                from .errors import JSSyntaxError
   606→                raise JSSyntaxError(f"JSON.parse: {e}")
   607→
   608→        def stringify_fn(*args):
   609→            value = args[0] if args else UNDEFINED
   610→            # Convert JS value to Python for json.dumps
   611→            py_value = ctx._to_python(value)
   612→            try:
   613→                return json.dumps(py_value, separators=(',', ':'))
   614→            except (TypeError, ValueError) as e:
   615→                from .errors import JSTypeError
   616→                raise JSTypeError(f"JSON.stringify: {e}")
   617→
   618→        json_obj.set("parse", parse_fn)
   619→        json_obj.set("stringify", stringify_fn)
   620→
   621→        return json_obj
   622→
   623→    def _create_number_constructor(self) -> JSCallableObject:
   624→        """Create the Number constructor with static methods."""

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   604→            except json.JSONDecodeError as e:
   605→                from .errors import JSSyntaxError
   606→                raise JSSyntaxError(f"JSON.parse: {e}")
   607→
   608→        def stringify_fn(*args):
   609→            value = args[0] if args else UNDEFINED
   610→            # Convert JS value to Python for json.dumps, handling undefined specially
   611→            def to_json_value(v):
   612→                if v is UNDEFINED:
   613→                    return None  # Will be filtered out for object properties
   614→                if v is NULL:
   615→                    return None
   616→                if isinstance(v, bool):
   617→                    return v
   618→                if isinstance(v, (int, float)):
   619→                    return v
   620→                if isinstance(v, str):
   621→                    return v
   622→                if isinstance(v, JSArray):
   623→                    # For arrays, undefined becomes null
   624→                    return [None if elem is UNDEFINED else to_json_value(elem) for elem in v._elements]
   625→                if isinstance(v, JSObject):
   626→                    # For objects, skip undefined values
   627→                    result = {}
   628→                    for k, val in v._properties.items():
   629→                        if val is not UNDEFINED:
   630→                            result[k] = to_json_value(val)
   631→                    return result
   632→                return None
   633→
   634→            py_value = to_json_value(value)
   635→            try:
   636→                return json.dumps(py_value, separators=(',', ':'))
   637→            except (TypeError, ValueError) as e:
   638→                from .errors import JSTypeError
   639→                raise JSTypeError(f"JSON.stringify: {e}")
   640→
   641→        json_obj.set("parse", parse_fn)
   642→        json_obj.set("stringify", stringify_fn)
   643→

JSON.stringify({x: 1, y: undefined, z:2}): {"x":1,"z":2}

parseFloat("Infinity"): nan
parseFloat("-Infinity"): nan

944:    def _global_parsefloat(self, *args):
945-        """Global parseFloat."""
946-        s = to_string(args[0]) if args else ""
947-        s = s.strip()
948-        if not s:
949-            return float('nan')
950-        i = 0
951-        has_dot = False
952-        has_exp = False
953-        if s[i] in '+-':
954-            i += 1
955-        while i < len(s):
956-            if s[i].isdigit():
957-                i += 1
958-            elif s[i] == '.' and not has_dot:
959-                has_dot = True

   944→    def _global_parsefloat(self, *args):
   945→        """Global parseFloat."""
   946→        s = to_string(args[0]) if args else ""
   947→        s = s.strip()
   948→        if not s:
   949→            return float('nan')
   950→        i = 0
   951→        has_dot = False
   952→        has_exp = False
   953→        if s[i] in '+-':
   954→            i += 1
   955→        while i < len(s):
   956→            if s[i].isdigit():
   957→                i += 1
   958→            elif s[i] == '.' and not has_dot:
   959→                has_dot = True
   960→                i += 1
   961→            elif s[i] in 'eE' and not has_exp:
   962→                has_exp = True
   963→                i += 1
   964→                if i < len(s) and s[i] in '+-':
   965→                    i += 1
   966→            else:
   967→                break
   968→        if i == 0:
   969→            return float('nan')
   970→        try:
   971→            return float(s[:i])
   972→        except ValueError:
   973→            return float('nan')

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   940→        if not found:
   941→            return float('nan')
   942→        return sign * result
   943→
   944→    def _global_parsefloat(self, *args):
   945→        """Global parseFloat."""
   946→        s = to_string(args[0]) if args else ""
   947→        s = s.strip()
   948→        if not s:
   949→            return float('nan')
   950→
   951→        # Handle Infinity
   952→        if s.startswith("Infinity"):
   953→            return float('inf')
   954→        if s.startswith("-Infinity"):
   955→            return float('-inf')
   956→        if s.startswith("+Infinity"):
   957→            return float('inf')
   958→
   959→        i = 0
   960→        has_dot = False
   961→        has_exp = False
   962→        if s[i] in '+-':
   963→            i += 1
   964→        while i < len(s):
   965→            if s[i].isdigit():
   966→                i += 1
   967→            elif s[i] == '.' and not has_dot:
   968→                has_dot = True
   969→                i += 1
   970→            elif s[i] in 'eE' and not has_exp:
   971→                has_exp = True
   972→                i += 1
   973→                if i < len(s) and s[i] in '+-':
   974→                    i += 1
   975→            else:
   976→                break
   977→        if i == 0:
   978→            return float('nan')
   979→        try:
   980→            return float(s[:i])
   981→        except ValueError:
   982→            return float('nan')
   983→
   984→    def eval(self, code: str) -> Any:
   985→        """Evaluate JavaScript code and return the result.
   986→

..........                                                               [100%]

======================== 395 passed, 4 xfailed in 4.66s ========================

test(): PASSED
test_array(): FAILED - JSError: Error: assertion failed: got boolean:|false|, expected boolean:|true|
test_array_ext(): FAILED - JSError: Error: expected exception
test_enum(): PASSED
test_function(): PASSED
test_number(): FAILED - JSTypeError: TypeError: undefined is not a function
test_math(): PASSED
test_global_eval(): FAILED - JSReferenceError: ReferenceError: z is not defined
test_json(): PASSED
test_regexp(): FAILED - RegExpError: Invalid control character escape
test_line_column_numbers(): FAILED - JSError: Error: EvalError: ReferenceError: a is not defined
test_large_eval_parse_stack(): FAILED - JSError: Error: EvalError: maximum recursion depth exceeded in comparison

Passed: 5, Failed: 7

1 file changed, 34 insertions(+), 2 deletions(-)

Testing number operations...
1. + operator passed
2. 0b passed
3. 0o passed
4. parseInt passed
5. parseInt prefix passed
6. parseInt hex passed
7. parseFloat Infinity passed
8. parseFloat -Infinity passed
Testing toExponential...
Error: TypeError: undefined is not a function

944:                return self._make_number_method(obj, key_str)
1314:    def _make_number_method(self, n: float, method: str) -> Any:

   941→        if isinstance(obj, (int, float)):
   942→            # Number methods
   943→            if key_str in ("toFixed", "toString"):
   944→                return self._make_number_method(obj, key_str)
   945→            return UNDEFINED
   946→
   947→        # Python callable (including JSBoundMethod)
   948→        if callable(obj):
   949→            if key_str in ("call", "apply", "bind"):
   950→                return self._make_callable_method(obj, key_str)
   951→            return UNDEFINED
   952→
   953→        return UNDEFINED
   954→
   955→    def _make_array_method(self, arr: JSArray, method: str) -> Any:
   956→        """Create a bound array method."""
   957→        vm = self  # Reference for closures
   958→
   959→        def push_fn(*args):
   960→            for arg in args:
   961→                arr.push(arg)
   962→            return arr.length
   963→
   964→        def pop_fn(*args):
   965→            return arr.pop()
   966→
   967→        def shift_fn(*args):
   968→            if not arr._elements:
   969→                return UNDEFINED
   970→            return arr._elements.pop(0)
   971→
   972→        def unshift_fn(*args):
   973→            for i, arg in enumerate(args):
   974→                arr._elements.insert(i, arg)
   975→            return arr.length
   976→
   977→        def toString_fn(*args):
   978→            return ",".join(to_string(elem) for elem in arr._elements)
   979→
   980→        def join_fn(*args):

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   937→            if key_str in string_methods:
   938→                return self._make_string_method(obj, key_str)
   939→            return UNDEFINED
   940→
   941→        if isinstance(obj, (int, float)):
   942→            # Number methods
   943→            if key_str in ("toFixed", "toString", "toExponential", "toPrecision", "valueOf"):
   944→                return self._make_number_method(obj, key_str)
   945→            return UNDEFINED
   946→
   947→        # Python callable (including JSBoundMethod)
   948→        if callable(obj):
   949→            if key_str in ("call", "apply", "bind"):

  1314→    def _make_number_method(self, n: float, method: str) -> Any:
  1315→        """Create a bound number method."""
  1316→        def toFixed(*args):
  1317→            digits = int(to_number(args[0])) if args else 0
  1318→            if digits < 0 or digits > 100:
  1319→                raise JSReferenceError("toFixed() digits out of range")
  1320→            return f"{n:.{digits}f}"
  1321→
  1322→        def toString(*args):
  1323→            radix = int(to_number(args[0])) if args else 10
  1324→            if radix < 2 or radix > 36:
  1325→                raise JSReferenceError("toString() radix must be between 2 and 36")
  1326→            if radix == 10:
  1327→                if isinstance(n, float) and n.is_integer():
  1328→                    return str(int(n))
  1329→                return str(n)
  1330→            # Convert to different base
  1331→            if n < 0:
  1332→                return "-" + self._number_to_base(-n, radix)
  1333→            return self._number_to_base(n, radix)
  1334→
  1335→        methods = {
  1336→            "toFixed": toFixed,
  1337→            "toString": toString,
  1338→        }
  1339→        return methods.get(method, lambda *args: UNDEFINED)
  1340→
  1341→    def _number_to_base(self, n: float, radix: int) -> str:
  1342→        """Convert number to string in given base."""
  1343→        if n != int(n):

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1318→            if digits < 0 or digits > 100:
  1319→                raise JSReferenceError("toFixed() digits out of range")
  1320→            return f"{n:.{digits}f}"
  1321→
  1322→        def toString(*args):
  1323→            radix = int(to_number(args[0])) if args else 10
  1324→            if radix < 2 or radix > 36:
  1325→                raise JSReferenceError("toString() radix must be between 2 and 36")
  1326→            if radix == 10:
  1327→                if isinstance(n, float) and n.is_integer():
  1328→                    return str(int(n))
  1329→                return str(n)
  1330→            # Convert to different base
  1331→            if n < 0:
  1332→                return "-" + self._number_to_base(-n, radix)
  1333→            return self._number_to_base(n, radix)
  1334→
  1335→        def toExponential(*args):
  1336→            import math
  1337→            if args and args[0] is not UNDEFINED:
  1338→                digits = int(to_number(args[0]))
  1339→            else:
  1340→                digits = None
  1341→
  1342→            if math.isnan(n):
  1343→                return "NaN"
  1344→            if math.isinf(n):
  1345→                return "-Infinity" if n < 0 else "Infinity"
  1346→
  1347→            if digits is None:
  1348→                # Default precision - let Python decide
  1349→                result = f"{n:e}"
  1350→            else:
  1351→                if digits < 0 or digits > 100:
  1352→                    raise JSReferenceError("toExponential() digits out of range")
  1353→                result = f"{n:.{digits}e}"
  1354→
  1355→            # JavaScript uses e+ not e for positive exponents
  1356→            result = result.replace('e+0', 'e+').replace('e-0', 'e-')
  1357→            result = result.replace('e+', 'e+').replace('e-', 'e-')
  1358→            # Ensure at least one digit in exponent
  1359→            if 'e+' in result:
  1360→                parts = result.split('e+')
  1361→                result = parts[0] + 'e+' + parts[1].lstrip('0') or '0'
  1362→            elif 'e-' in result:
  1363→                parts = result.split('e-')
  1364→                result = parts[0] + 'e-' + parts[1].lstrip('0') or '0'
  1365→            return result
  1366→
  1367→        def toPrecision(*args):
  1368→            import math
  1369→            if not args or args[0] is UNDEFINED:
  1370→                return str(n)
  1371→
  1372→            precision = int(to_number(args[0]))
  1373→            if precision < 1 or precision > 100:
  1374→                raise JSReferenceError("toPrecision() precision out of range")
  1375→
  1376→            if math.isnan(n):
  1377→                return "NaN"
  1378→            if math.isinf(n):
  1379→                return "-Infinity" if n < 0 else "Infinity"
  1380→
  1381→            # Use Python's formatting with significant figures
  1382→            result = f"{n:.{precision}g}"
  1383→            # JavaScript may use exponential for large/small numbers
  1384→            if 'e' in result or 'E' in result:
  1385→                result = result.replace('e+0', 'e+').replace('e-0', 'e-')
  1386→            return result
  1387→
  1388→        def valueOf(*args):
  1389→            return n
  1390→
  1391→        methods = {
  1392→            "toFixed": toFixed,
  1393→            "toString": toString,
  1394→            "toExponential": toExponential,
  1395→            "toPrecision": toPrecision,
  1396→            "valueOf": valueOf,
  1397→        }
  1398→        return methods.get(method, lambda *args: UNDEFINED)
  1399→
  1400→    def _number_to_base(self, n: float, radix: int) -> str:
  1401→        """Convert number to string in given base."""
  1402→        if n != int(n):

(25).toExponential(): 2.500000e+1
(25).toExponential(0): 2e+1
(-25).toExponential(0): -2e+1
(2.5).toPrecision(1): 2

450:    assert((25).toExponential(), "2.5e+1");
451:    assert((25).toExponential(0), "3e+1");
452:    assert((-25).toExponential(0), "-3e+1");
453:    assert((2.5).toPrecision(1), "3");
454:    assert((-2.5).toPrecision(1), "-3");
455:    assert((25).toPrecision(1), "3e+1");

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1331→            if n < 0:
  1332→                return "-" + self._number_to_base(-n, radix)
  1333→            return self._number_to_base(n, radix)
  1334→
  1335→        def toExponential(*args):
  1336→            import math
  1337→            if args and args[0] is not UNDEFINED:
  1338→                digits = int(to_number(args[0]))
  1339→            else:
  1340→                digits = None
  1341→
  1342→            if math.isnan(n):
  1343→                return "NaN"
  1344→            if math.isinf(n):
  1345→                return "-Infinity" if n < 0 else "Infinity"
  1346→
  1347→            if digits is None:
  1348→                # Default precision - minimal representation
  1349→                # Use repr-style formatting and convert to exponential
  1350→                if n == 0:
  1351→                    return "0e+0"
  1352→                sign = "-" if n < 0 else ""
  1353→                abs_n = abs(n)
  1354→                exp = int(math.floor(math.log10(abs_n)))
  1355→                mantissa = abs_n / (10 ** exp)
  1356→                # Format mantissa without trailing zeros
  1357→                mantissa_str = f"{mantissa:.15g}".rstrip('0').rstrip('.')
  1358→                exp_sign = "+" if exp >= 0 else ""
  1359→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1360→            else:
  1361→                if digits < 0 or digits > 100:
  1362→                    raise JSReferenceError("toExponential() digits out of range")
  1363→                # Round to specified digits
  1364→                if n == 0:
  1365→                    return "0" + ("." + "0" * digits if digits > 0 else "") + "e+0"
  1366→                sign = "-" if n < 0 else ""
  1367→                abs_n = abs(n)
  1368→                exp = int(math.floor(math.log10(abs_n)))
  1369→                mantissa = abs_n / (10 ** exp)
  1370→                # Round mantissa to specified digits
  1371→                rounded = round(mantissa, digits)
  1372→                if rounded >= 10:
  1373→                    rounded /= 10
  1374→                    exp += 1
  1375→                if digits == 0:
  1376→                    mantissa_str = str(int(round(rounded)))
  1377→                else:
  1378→                    mantissa_str = f"{rounded:.{digits}f}"
  1379→                exp_sign = "+" if exp >= 0 else ""
  1380→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1381→
  1382→        def toPrecision(*args):
  1383→            import math
  1384→            if not args or args[0] is UNDEFINED:
  1385→                if isinstance(n, float) and n.is_integer():
  1386→                    return str(int(n))
  1387→                return str(n)
  1388→
  1389→            precision = int(to_number(args[0]))
  1390→            if precision < 1 or precision > 100:
  1391→                raise JSReferenceError("toPrecision() precision out of range")
  1392→
  1393→            if math.isnan(n):
  1394→                return "NaN"
  1395→            if math.isinf(n):
  1396→                return "-Infinity" if n < 0 else "Infinity"
  1397→
  1398→            if n == 0:
  1399→                if precision == 1:
  1400→                    return "0"
  1401→                return "0." + "0" * (precision - 1)
  1402→
  1403→            sign = "-" if n < 0 else ""
  1404→            abs_n = abs(n)
  1405→            exp = int(math.floor(math.log10(abs_n)))
  1406→
  1407→            # Decide if we use exponential or fixed notation
  1408→            if exp < -6 or exp >= precision:
  1409→                # Use exponential notation
  1410→                mantissa = abs_n / (10 ** exp)
  1411→                rounded = round(mantissa, precision - 1)
  1412→                if rounded >= 10:
  1413→                    rounded /= 10
  1414→                    exp += 1
  1415→                if precision == 1:
  1416→                    mantissa_str = str(int(round(rounded)))
  1417→                else:
  1418→                    mantissa_str = f"{rounded:.{precision - 1}f}"
  1419→                exp_sign = "+" if exp >= 0 else ""
  1420→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1421→            else:
  1422→                # Use fixed notation
  1423→                # Calculate digits after decimal
  1424→                if exp >= 0:
  1425→                    decimal_places = max(0, precision - exp - 1)
  1426→                else:
  1427→                    decimal_places = precision - 1 - exp
  1428→                rounded = round(abs_n, decimal_places)
  1429→                if decimal_places <= 0:
  1430→                    return f"{sign}{int(rounded)}"
  1431→                return f"{sign}{rounded:.{decimal_places}f}"
  1432→
  1433→        def valueOf(*args):
  1434→            return n
  1435→

(25).toExponential(): 2.5e+1
(25).toExponential(0): 2e+1
(-25).toExponential(0): -2e+1
(2.5).toPrecision(1): 2
(-2.5).toPrecision(1): -2
(25).toPrecision(1): 2e+1

js_round(2.5): 3
js_round(-2.5): -3

1314:    def _make_number_method(self, n: float, method: str) -> Any:

src/mquickjs_python/vm.py:943:            if key_str in ("toFixed", "toString", "toExponential", "toPrecision", "valueOf"):
src/mquickjs_python/vm.py:1335:        def toExponential(*args):
src/mquickjs_python/vm.py:1362:                    raise JSReferenceError("toExponential() digits out of range")
src/mquickjs_python/vm.py:1382:        def toPrecision(*args):
src/mquickjs_python/vm.py:1391:                raise JSReferenceError("toPrecision() precision out of range")
src/mquickjs_python/vm.py:1439:            "toExponential": toExponential,
src/mquickjs_python/vm.py:1440:            "toPrecision": toPrecision,

  1330→            # Convert to different base
  1331→            if n < 0:
  1332→                return "-" + self._number_to_base(-n, radix)
  1333→            return self._number_to_base(n, radix)
  1334→
  1335→        def toExponential(*args):
  1336→            import math
  1337→            if args and args[0] is not UNDEFINED:
  1338→                digits = int(to_number(args[0]))
  1339→            else:
  1340→                digits = None
  1341→
  1342→            if math.isnan(n):
  1343→                return "NaN"
  1344→            if math.isinf(n):
  1345→                return "-Infinity" if n < 0 else "Infinity"
  1346→
  1347→            if digits is None:
  1348→                # Default precision - minimal representation
  1349→                # Use repr-style formatting and convert to exponential
  1350→                if n == 0:
  1351→                    return "0e+0"
  1352→                sign = "-" if n < 0 else ""
  1353→                abs_n = abs(n)
  1354→                exp = int(math.floor(math.log10(abs_n)))
  1355→                mantissa = abs_n / (10 ** exp)
  1356→                # Format mantissa without trailing zeros
  1357→                mantissa_str = f"{mantissa:.15g}".rstrip('0').rstrip('.')
  1358→                exp_sign = "+" if exp >= 0 else ""
  1359→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1360→            else:
  1361→                if digits < 0 or digits > 100:
  1362→                    raise JSReferenceError("toExponential() digits out of range")
  1363→                # Round to specified digits
  1364→                if n == 0:
  1365→                    return "0" + ("." + "0" * digits if digits > 0 else "") + "e+0"
  1366→                sign = "-" if n < 0 else ""
  1367→                abs_n = abs(n)
  1368→                exp = int(math.floor(math.log10(abs_n)))
  1369→                mantissa = abs_n / (10 ** exp)
  1370→                # Round mantissa to specified digits
  1371→                rounded = round(mantissa, digits)
  1372→                if rounded >= 10:
  1373→                    rounded /= 10
  1374→                    exp += 1
  1375→                if digits == 0:
  1376→                    mantissa_str = str(int(round(rounded)))
  1377→                else:
  1378→                    mantissa_str = f"{rounded:.{digits}f}"
  1379→                exp_sign = "+" if exp >= 0 else ""
  1380→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1381→
  1382→        def toPrecision(*args):
  1383→            import math
  1384→            if not args or args[0] is UNDEFINED:
  1385→                if isinstance(n, float) and n.is_integer():
  1386→                    return str(int(n))
  1387→                return str(n)
  1388→
  1389→            precision = int(to_number(args[0]))
  1390→            if precision < 1 or precision > 100:
  1391→                raise JSReferenceError("toPrecision() precision out of range")
  1392→
  1393→            if math.isnan(n):
  1394→                return "NaN"
  1395→            if math.isinf(n):
  1396→                return "-Infinity" if n < 0 else "Infinity"
  1397→
  1398→            if n == 0:
  1399→                if precision == 1:
  1400→                    return "0"
  1401→                return "0." + "0" * (precision - 1)
  1402→
  1403→            sign = "-" if n < 0 else ""
  1404→            abs_n = abs(n)
  1405→            exp = int(math.floor(math.log10(abs_n)))
  1406→
  1407→            # Decide if we use exponential or fixed notation
  1408→            if exp < -6 or exp >= precision:
  1409→                # Use exponential notation
  1410→                mantissa = abs_n / (10 ** exp)
  1411→                rounded = round(mantissa, precision - 1)
  1412→                if rounded >= 10:
  1413→                    rounded /= 10
  1414→                    exp += 1
  1415→                if precision == 1:
  1416→                    mantissa_str = str(int(round(rounded)))
  1417→                else:
  1418→                    mantissa_str = f"{rounded:.{precision - 1}f}"
  1419→                exp_sign = "+" if exp >= 0 else ""
  1420→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1421→            else:
  1422→                # Use fixed notation
  1423→                # Calculate digits after decimal
  1424→                if exp >= 0:
  1425→                    decimal_places = max(0, precision - exp - 1)
  1426→                else:
  1427→                    decimal_places = precision - 1 - exp
  1428→                rounded = round(abs_n, decimal_places)
  1429→                if decimal_places <= 0:
  1430→                    return f"{sign}{int(rounded)}"
  1431→                return f"{sign}{rounded:.{decimal_places}f}"
  1432→
  1433→        def valueOf(*args):
  1434→            return n
  1435→
  1436→        methods = {
  1437→            "toFixed": toFixed,
  1438→            "toString": toString,
  1439→            "toExponential": toExponential,
  1440→            "toPrecision": toPrecision,
  1441→            "valueOf": valueOf,
  1442→        }
  1443→        return methods.get(method, lambda *args: UNDEFINED)
  1444→
  1445→    def _number_to_base(self, n: float, radix: int) -> str:
  1446→        """Convert number to string in given base."""
  1447→        if n != int(n):
  1448→            # For non-integers, just use base 10
  1449→            return str(n)
  1450→        n = int(n)
  1451→        if n == 0:
  1452→            return "0"
  1453→        digits = "0123456789abcdefghijklmnopqrstuvwxyz"
  1454→        result = []
  1455→        while n:
  1456→            result.append(digits[n % radix])
  1457→            n //= radix
  1458→        return "".join(reversed(result))
  1459→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

     1→"""Virtual machine for executing JavaScript bytecode."""
     2→
     3→import math
     4→import time
     5→from typing import Any, Dict, List, Optional, Tuple, Union
     6→from dataclasses import dataclass
     7→
     8→from .opcodes import OpCode
     9→from .compiler import CompiledFunction
    10→from .values import (
    11→    UNDEFINED, NULL, JSUndefined, JSNull, JSValue,
    12→    JSObject, JSArray, JSFunction, JSRegExp,
    13→    to_boolean, to_number, to_string, js_typeof,
    14→)
    15→from .errors import (
    16→    JSError, JSTypeError, JSReferenceError,
    17→    MemoryLimitError, TimeLimitError,
    18→)
    19→
    20→
    21→@dataclass
    22→class ClosureCell:
    23→    """A cell for closure variable - allows sharing between scopes."""
    24→    value: JSValue
    25→
    26→
    27→@dataclass
    28→class CallFrame:
    29→    """Call frame on the call stack."""
    30→    func: CompiledFunction
    31→    ip: int  # Instruction pointer
    32→    bp: int  # Base pointer (stack base for this frame)
    33→    locals: List[JSValue]
    34→    this_value: JSValue
    35→    closure_cells: List[ClosureCell] = None  # Cells for captured variables (from outer function)
    36→    cell_storage: List[ClosureCell] = None  # Cells for variables captured by inner functions
    37→    is_constructor_call: bool = False  # True if this frame is from a "new" call
    38→    new_target: JSValue = None  # The new object for constructor calls
    39→
    40→
    41→class ForInIterator:
    42→    """Iterator for for-in loops."""
    43→    def __init__(self, keys: List[str]):
    44→        self.keys = keys
    45→        self.index = 0
    46→
    47→    def next(self) -> Tuple[Optional[str], bool]:
    48→        """Return (key, done)."""
    49→        if self.index >= len(self.keys):
    50→            return None, True

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    11→    UNDEFINED, NULL, JSUndefined, JSNull, JSValue,
    12→    JSObject, JSArray, JSFunction, JSRegExp,
    13→    to_boolean, to_number, to_string, js_typeof,
    14→)
    15→from .errors import (
    16→    JSError, JSTypeError, JSReferenceError,
    17→    MemoryLimitError, TimeLimitError,
    18→)
    19→
    20→
    21→def js_round(x: float, ndigits: int = 0) -> float:
    22→    """Round using JavaScript-style 'round half away from zero' instead of Python's 'round half to even'."""
    23→    if ndigits == 0:
    24→        if x >= 0:
    25→            return math.floor(x + 0.5)
    26→        else:
    27→            return math.ceil(x - 0.5)
    28→    else:
    29→        multiplier = 10 ** ndigits
    30→        if x >= 0:
    31→            return math.floor(x * multiplier + 0.5) / multiplier
    32→        else:
    33→            return math.ceil(x * multiplier - 0.5) / multiplier
    34→
    35→
    36→@dataclass
    37→class ClosureCell:
    38→    """A cell for closure variable - allows sharing between scopes."""
    39→    value: JSValue
    40→

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1346→            if n < 0:
  1347→                return "-" + self._number_to_base(-n, radix)
  1348→            return self._number_to_base(n, radix)
  1349→
  1350→        def toExponential(*args):
  1351→            import math
  1352→            if args and args[0] is not UNDEFINED:
  1353→                digits = int(to_number(args[0]))
  1354→            else:
  1355→                digits = None
  1356→
  1357→            if math.isnan(n):
  1358→                return "NaN"
  1359→            if math.isinf(n):
  1360→                return "-Infinity" if n < 0 else "Infinity"
  1361→
  1362→            if digits is None:
  1363→                # Default precision - minimal representation
  1364→                # Use repr-style formatting and convert to exponential
  1365→                if n == 0:
  1366→                    return "0e+0"
  1367→                sign = "-" if n < 0 else ""
  1368→                abs_n = abs(n)
  1369→                exp = int(math.floor(math.log10(abs_n)))
  1370→                mantissa = abs_n / (10 ** exp)
  1371→                # Format mantissa without trailing zeros
  1372→                mantissa_str = f"{mantissa:.15g}".rstrip('0').rstrip('.')
  1373→                exp_sign = "+" if exp >= 0 else ""
  1374→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1375→            else:
  1376→                if digits < 0 or digits > 100:
  1377→                    raise JSReferenceError("toExponential() digits out of range")
  1378→                # Round to specified digits
  1379→                if n == 0:
  1380→                    return "0" + ("." + "0" * digits if digits > 0 else "") + "e+0"
  1381→                sign = "-" if n < 0 else ""
  1382→                abs_n = abs(n)
  1383→                exp = int(math.floor(math.log10(abs_n)))
  1384→                mantissa = abs_n / (10 ** exp)
  1385→                # Round mantissa to specified digits using JS-style rounding
  1386→                rounded = js_round(mantissa, digits)
  1387→                if rounded >= 10:
  1388→                    rounded /= 10
  1389→                    exp += 1
  1390→                if digits == 0:
  1391→                    mantissa_str = str(int(js_round(rounded)))
  1392→                else:
  1393→                    mantissa_str = f"{rounded:.{digits}f}"
  1394→                exp_sign = "+" if exp >= 0 else ""
  1395→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1396→
  1397→        def toPrecision(*args):
  1398→            import math
  1399→            if not args or args[0] is UNDEFINED:

The file /home/user/mquickjs-python/src/mquickjs_python/vm.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1393→                    mantissa_str = f"{rounded:.{digits}f}"
  1394→                exp_sign = "+" if exp >= 0 else ""
  1395→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1396→
  1397→        def toPrecision(*args):
  1398→            import math
  1399→            if not args or args[0] is UNDEFINED:
  1400→                if isinstance(n, float) and n.is_integer():
  1401→                    return str(int(n))
  1402→                return str(n)
  1403→
  1404→            precision = int(to_number(args[0]))
  1405→            if precision < 1 or precision > 100:
  1406→                raise JSReferenceError("toPrecision() precision out of range")
  1407→
  1408→            if math.isnan(n):
  1409→                return "NaN"
  1410→            if math.isinf(n):
  1411→                return "-Infinity" if n < 0 else "Infinity"
  1412→
  1413→            if n == 0:
  1414→                if precision == 1:
  1415→                    return "0"
  1416→                return "0." + "0" * (precision - 1)
  1417→
  1418→            sign = "-" if n < 0 else ""
  1419→            abs_n = abs(n)
  1420→            exp = int(math.floor(math.log10(abs_n)))
  1421→
  1422→            # Decide if we use exponential or fixed notation
  1423→            if exp < -6 or exp >= precision:
  1424→                # Use exponential notation
  1425→                mantissa = abs_n / (10 ** exp)
  1426→                rounded = js_round(mantissa, precision - 1)
  1427→                if rounded >= 10:
  1428→                    rounded /= 10
  1429→                    exp += 1
  1430→                if precision == 1:
  1431→                    mantissa_str = str(int(js_round(rounded)))
  1432→                else:
  1433→                    mantissa_str = f"{rounded:.{precision - 1}f}"
  1434→                exp_sign = "+" if exp >= 0 else ""
  1435→                return f"{sign}{mantissa_str}e{exp_sign}{exp}"
  1436→            else:
  1437→                # Use fixed notation
  1438→                # Calculate digits after decimal
  1439→                if exp >= 0:
  1440→                    decimal_places = max(0, precision - exp - 1)
  1441→                else:
  1442→                    decimal_places = precision - 1 - exp
  1443→                rounded = js_round(abs_n, decimal_places)
  1444→                if decimal_places <= 0:
  1445→                    return f"{sign}{int(rounded)}"
  1446→                return f"{sign}{rounded:.{decimal_places}f}"
  1447→
  1448→        def valueOf(*args):
  1449→            return n
  1450→

Testing toExponential:
(25).toExponential(0): 3e+1 (expected: 3e+1)
(0.5).toExponential(0): 5e-1 (expected: 5e-1)
(1.5).toExponential(0): 2e+0 (expected: 2e+0)

Testing toPrecision:
(2.5).toPrecision(1): 3 (expected: 3)
(1.5).toPrecision(1): 2 (expected: 2)
(3.5).toPrecision(1): 4 (expected: 4)

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

============================= test session starts ==============================
platform linux -- Python 3.11.14, pytest-9.0.2, pluggy-1.6.0 -- /home/user/mquickjs-python/.venv/bin/python
cachedir: .pytest_cache
rootdir: /home/user/mquickjs-python
configfile: pyproject.toml
collecting ... collected 26 items

tests/test_js_basic.py::test_basic_js[01_empty.js-path0] PASSED          [  3%]
tests/test_js_basic.py::test_basic_js[test_array_methods.js-path1] PASSED [  7%]
tests/test_js_basic.py::test_basic_js[test_for_in2.js-path2] PASSED      [ 11%]
tests/test_js_basic.py::test_basic_js[test_for_in_array.js-path3] PASSED [ 15%]
tests/test_js_basic.py::test_basic_js[test_for_in_simple.js-path4] PASSED [ 19%]
tests/test_js_basic.py::test_basic_js[test_json.js-path5] PASSED         [ 23%]
tests/test_js_basic.py::test_basic_js[test_loop_break.js-path6] PASSED   [ 26%]
tests/test_js_basic.py::test_basic_js[test_loop_for.js-path7] PASSED     [ 30%]
tests/test_js_basic.py::test_basic_js[test_loop_switch.js-path8] PASSED  [ 34%]
tests/test_js_basic.py::test_basic_js[test_loop_switch2.js-path9] PASSED [ 38%]
tests/test_js_basic.py::test_basic_js[test_loop_try5.js-path10] PASSED   [ 42%]
tests/test_js_basic.py::test_basic_js[test_loop_while.js-path11] PASSED  [ 46%]
tests/test_js_basic.py::test_basic_js[test_math.js-path12] PASSED        [ 50%]
tests/test_js_basic.py::test_basic_js[test_number_date.js-path13] PASSED [ 53%]
tests/test_js_basic.py::test_basic_js[test_object_methods.js-path14] PASSED [ 57%]
tests/test_js_basic.py::test_basic_js[test_regexp.js-path15] PASSED      [ 61%]
tests/test_js_basic.py::test_basic_js[test_string_methods.js-path16] PASSED [ 65%]
tests/test_js_basic.py::test_basic_js[test_try_catch.js-path17] PASSED   [ 69%]
tests/test_js_basic.py::test_basic_js[test_try_catch_simple.js-path18] PASSED [ 73%]
tests/test_js_basic.py::test_compat_js[test_closure.js-path0] PASSED     [ 76%]
tests/test_js_basic.py::test_compat_js[test_language.js-path1] PASSED    [ 80%]
tests/test_js_basic.py::test_compat_js[test_loop.js-path2] PASSED        [ 84%]
tests/test_js_basic.py::test_mquickjs_js[mandelbrot.js-path0] XFAIL      [ 88%]
tests/test_js_basic.py::test_mquickjs_js[microbench.js-path1] XFAIL      [ 92%]
tests/test_js_basic.py::test_mquickjs_js[test_builtin.js-path2] XFAIL    [ 96%]
tests/test_js_basic.py::test_mquickjs_js[test_rect.js-path3] XFAIL (...) [100%]

======================== 22 passed, 4 xfailed in 2.89s =========================

     1→"use strict";
     2→
     3→function throw_error(msg) {
     4→    throw Error(msg);
     5→}
     6→
     7→function assert(actual, expected, message) {
     8→    function get_full_type(o) {
     9→        var type = typeof(o);
    10→        if (type === 'object') {
    11→            if (o === null)
    12→                return 'null';
    13→            if (o.constructor && o.constructor.name)
    14→                return o.constructor.name;
    15→        }
    16→        return type;
    17→    }
    18→
    19→    if (arguments.length == 1)
    20→        expected = true;
    21→
    22→    if (typeof actual === typeof expected) {
    23→        if (actual === expected) {
    24→            if (actual !== 0 || (1 / actual) === (1 / expected))
    25→                return;
    26→        }
    27→        if (typeof actual === 'number') {
    28→            if (isNaN(actual) && isNaN(expected))
    29→                return true;
    30→        }
    31→        if (typeof actual === 'object') {
    32→            if (actual !== null && expected !== null
    33→            &&  actual.constructor === expected.constructor
    34→            &&  actual.toString() === expected.toString())
    35→                return;
    36→        }
    37→    }
    38→    // Should output the source file and line number and extract
    39→    //   the expression from the assert call
    40→    throw_error("assertion failed: got " +
    41→                get_full_type(actual) + ":|" + actual + "|, expected " +
    42→                get_full_type(expected) + ":|" + expected + "|" +
    43→                (message ? " (" + message + ")" : ""));
    44→}
    45→
    46→function assert_throws(expected_error, func)
    47→{
    48→    var err = false;
    49→    try {
    50→        func();
    51→    } catch(e) {
    52→        err = true;
    53→        if (!(e instanceof expected_error)) {
    54→            // Should output the source file and line number and extract
    55→            //   the expression from the assert_throws() call
    56→            throw_error("unexpected exception type");
    57→            return;
    58→        }
    59→    }
    60→    if (!err) {
    61→        // Should output the source file and line number and extract
    62→        //   the expression from the assert_throws() call
    63→        throw_error("expected exception");
    64→    }
    65→}
    66→
    67→function my_func(a, b)
    68→{
    69→    return a + b;
    70→}
    71→
    72→function test_function()
    73→{
    74→    function f(a, b) {
    75→        var i, tab = [];
    76→        tab.push(this);
    77→        for(i = 0; i < arguments.length; i++)
    78→            tab.push(arguments[i]);
    79→        return tab;
    80→    }
    81→    function constructor1(a) {
    82→        this.x = a;
    83→    }
    84→    
    85→    var r, g;
    86→    
    87→    r = my_func.call(null, 1, 2);
    88→    assert(r, 3, "call");
    89→
    90→    r = my_func.apply(null, ["abc", 2]);
    91→    assert(r, "abc2", "apply");
    92→
    93→    r = new Function("a", "b", "return a + b;");
    94→    assert(r(2,3), 5, "function");
    95→
    96→    g = f.bind(1, 2);
    97→//    assert(g.length, 1);
    98→//    assert(g.name, "bound f");
    99→    assert(g(3).toString(), "1,2,3");
   100→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

344:    assert(a.charCodeAt(0), 0x20ac, "unicode");
345:    assert(a, "€", "unicode");
346:    assert(a, "\u20ac", "unicode");
347:    assert(a, "\u{20ac}", "unicode");
348:    assert("a", "\x61", "unicode");
351:    assert(a.length, 2, "unicode");
352:    assert(a, "\u{dbff}\u{dfff}", "unicode");

   340→
   341→    a = "abcd";
   342→    assert(a.substring(1, 3), "bc", "substring");
   343→    a = String.fromCharCode(0x20ac);
   344→    assert(a.charCodeAt(0), 0x20ac, "unicode");
   345→    assert(a, "€", "unicode");
   346→    assert(a, "\u20ac", "unicode");
   347→    assert(a, "\u{20ac}", "unicode");
   348→    assert("a", "\x61", "unicode");
   349→        
   350→    a = "\u{10ffff}";
   351→    assert(a.length, 2, "unicode");
   352→    assert(a, "\u{dbff}\u{dfff}", "unicode");
   353→    assert(a.codePointAt(0), 0x10ffff);
   354→    assert(a.codePointAt(1), 0xdfff);
   355→    assert(String.fromCodePoint(0x10ffff), a);
   356→
   357→    assert("a".concat("b", "c", 123), "abc123");
   358→
   359→    assert("abcabc".indexOf("cab"), 2);
   360→    assert("abcabc".indexOf("cab2"), -1);
   361→    assert("abc".indexOf("c"), 2);
   362→    assert("abcabc".lastIndexOf("ab"), 3);
   363→
   364→    a = "a,b,c".split(",");
   365→    assert(a.length === 3 && a[0] === "a" && a[1] === "b" && a[2] === "c");
   366→    a = ",b,c".split(",");
   367→    assert(a.length === 3 && a[0] === "" && a[1] === "b" && a[2] === "c");
   368→    a = "a,b,".split(",");
   369→    assert(a.length === 3 && a[0] === "a" && a[1] === "b" && a[2] === "");

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

     1→/* test for example.c */
     2→
     3→function assert(actual, expected, message) {
     4→    function get_full_type(o) {
     5→        var type = typeof(o);
     6→        if (type === 'object') {
     7→            if (o === null)
     8→                return 'null';
     9→            if (o.constructor && o.constructor.name)
    10→                return o.constructor.name;
    11→        }
    12→        return type;
    13→    }
    14→
    15→    if (arguments.length == 1)
    16→        expected = true;
    17→
    18→    if (typeof actual === typeof expected) {
    19→        if (actual === expected) {
    20→            if (actual !== 0 || (1 / actual) === (1 / expected))
    21→                return;
    22→        }
    23→        if (typeof actual === 'number') {
    24→            if (isNaN(actual) && isNaN(expected))
    25→                return true;
    26→        }
    27→        if (typeof actual === 'object') {
    28→            if (actual !== null && expected !== null
    29→            &&  actual.constructor === expected.constructor
    30→            &&  actual.toString() === expected.toString())
    31→                return;
    32→        }
    33→    }
    34→    // Should output the source file and line number and extract
    35→    //   the expression from the assert call
    36→    throw Error("assertion failed: got " +
    37→                get_full_type(actual) + ":|" + actual + "|, expected " +
    38→                get_full_type(expected) + ":|" + expected + "|" +
    39→                (message ? " (" + message + ")" : ""));
    40→}
    41→
    42→function cb(param)
    43→{
    44→    return "test" + param;
    45→}
    46→
    47→function test()
    48→{
    49→    var r1, r2, func;
    50→    r1 = new Rectangle(100, 200);
    51→    assert(r1.x, 100);
    52→    assert(r1.y, 200);
    53→
    54→    /* test inheritance */
    55→    r2 = new FilledRectangle(100, 200, 0x123456);
    56→    assert(r2.x, 100);
    57→    assert(r2.y, 200);
    58→    assert(r2.color, 0x123456);
    59→    
    60→    /* test closure */
    61→    func = Rectangle.getClosure("abcd");
    62→    assert(func(), "abcd");
    63→
    64→    /* test function call */
    65→    assert(Rectangle.call(cb, "abc"), "testabc");
    66→}
    67→
    68→test();
    69→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

32:        self._globals: Dict[str, JSValue] = {}
40:        self._globals["console"] = console
43:        self._globals["Infinity"] = float("inf")
44:        self._globals["NaN"] = float("nan")
45:        self._globals["undefined"] = UNDEFINED
48:        self._globals["Object"] = self._create_object_constructor()
49:        self._globals["Array"] = self._create_array_constructor()
50:        self._globals["Error"] = self._create_error_constructor("Error")
51:        self._globals["TypeError"] = self._create_error_constructor("TypeError")
52:        self._globals["SyntaxError"] = self._create_error_constructor("SyntaxError")
53:        self._globals["ReferenceError"] = self._create_error_constructor("ReferenceError")
54:        self._globals["RangeError"] = self._create_error_constructor("RangeError")
55:        self._globals["URIError"] = self._create_error_constructor("URIError")
56:        self._globals["EvalError"] = self._create_error_constructor("EvalError")
59:        self._globals["Math"] = self._create_math_object()
62:        self._globals["JSON"] = self._create_json_object()
65:        self._globals["Number"] = self._create_number_constructor()
68:        self._globals["String"] = self._create_string_constructor()
71:        self._globals["Boolean"] = self._create_boolean_constructor()
74:        self._globals["Date"] = self._create_date_constructor()
77:        self._globals["RegExp"] = self._create_regexp_constructor()
80:        self._globals["Function"] = self._create_function_constructor()
83:        self._globals["isNaN"] = self._global_isnan
84:        self._globals["isFinite"] = self._global_isfinite
85:        self._globals["parseInt"] = self._global_parseint
86:        self._globals["parseFloat"] = self._global_parsefloat
89:        self._globals["eval"] = self._create_eval_function()
216:        def set_prototype_of(*args):
849:                vm.globals = self._globals
891:                vm.globals = ctx._globals
1032:    def set(self, name: str, value: Any) -> None:
1039:        self._globals[name] = self._to_js(value)

  1030→        return self._to_python(value)
  1031→
  1032→    def set(self, name: str, value: Any) -> None:
  1033→        """Set a global variable.
  1034→
  1035→        Args:
  1036→            name: Variable name
  1037→            value: Value to set (Python value, will be converted)
  1038→        """
  1039→        self._globals[name] = self._to_js(value)
  1040→
  1041→    def _to_python(self, value: JSValue) -> Any:
  1042→        """Convert a JavaScript value to Python."""
  1043→        if value is UNDEFINED:
  1044→            return None
  1045→        if value is NULL:
  1046→            return None
  1047→        if isinstance(value, bool):
  1048→            return value
  1049→        if isinstance(value, (int, float)):
  1050→            return value
  1051→        if isinstance(value, str):
  1052→            return value
  1053→        if isinstance(value, JSArray):
  1054→            return [self._to_python(elem) for elem in value._elements]
  1055→        if isinstance(value, JSObject):
  1056→            return {k: self._to_python(v) for k, v in value._properties.items()}
  1057→        return value
  1058→
  1059→    def _to_js(self, value: Any) -> JSValue:
  1060→        """Convert a Python value to JavaScript."""
  1061→        if value is None:
  1062→            return NULL
  1063→        if isinstance(value, bool):
  1064→            return value
  1065→        if isinstance(value, (int, float)):
  1066→            return value
  1067→        if isinstance(value, str):
  1068→            return value
  1069→        if isinstance(value, list):

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

   100→        # Constructor function - new Object() creates empty object
   101→        def object_constructor(*args):
   102→            obj = JSObject()
   103→            obj._prototype = object_prototype
   104→            return obj
   105→
   106→        # Create a callable object that acts as constructor
   107→        obj_constructor = JSCallableObject(object_constructor)
   108→        obj_constructor._prototype = object_prototype
   109→        object_prototype.set("constructor", obj_constructor)
   110→
   111→        # Add Object.prototype methods
   112→        def proto_toString(this_val, *args):
   113→            # Get the [[Class]] internal property
   114→            if this_val is UNDEFINED:
   115→                return "[object Undefined]"
   116→            if this_val is NULL:
   117→                return "[object Null]"
   118→            if isinstance(this_val, bool):
   119→                return "[object Boolean]"
   120→            if isinstance(this_val, (int, float)):
   121→                return "[object Number]"
   122→            if isinstance(this_val, str):
   123→                return "[object String]"
   124→            if isinstance(this_val, JSArray):
   125→                return "[object Array]"
   126→            if callable(this_val) or isinstance(this_val, JSCallableObject):
   127→                return "[object Function]"
   128→            return "[object Object]"
   129→
   130→        def proto_hasOwnProperty(this_val, *args):
   131→            prop = to_string(args[0]) if args else ""
   132→            if isinstance(this_val, JSArray):
   133→                # For arrays, check both properties and array indices
   134→                try:
   135→                    idx = int(prop)
   136→                    if 0 <= idx < len(this_val._elements):
   137→                        return True
   138→                except (ValueError, TypeError):
   139→                    pass
   140→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   141→            if isinstance(this_val, JSObject):
   142→                return this_val.has(prop) or prop in this_val._getters or prop in this_val._setters
   143→            return False
   144→
   145→        def proto_valueOf(this_val, *args):
   146→            return this_val
   147→
   148→        def proto_isPrototypeOf(this_val, *args):
   149→            obj = args[0] if args else UNDEFINED
   150→            if not isinstance(obj, JSObject):
   151→                return False
   152→            proto = getattr(obj, '_prototype', None)
   153→            while proto is not None:
   154→                if proto is this_val:
   155→                    return True
   156→                proto = getattr(proto, '_prototype', None)
   157→            return False
   158→
   159→        # These methods need special handling for 'this'
   160→        from .values import JSBoundMethod
   161→        object_prototype.set("toString", JSBoundMethod(proto_toString))
   162→        object_prototype.set("hasOwnProperty", JSBoundMethod(proto_hasOwnProperty))
   163→        object_prototype.set("valueOf", JSBoundMethod(proto_valueOf))
   164→        object_prototype.set("isPrototypeOf", JSBoundMethod(proto_isPrototypeOf))
   165→
   166→        # Store for other constructors to use
   167→        self._object_prototype = object_prototype
   168→
   169→        def keys_fn(*args):
   170→            obj = args[0] if args else UNDEFINED
   171→            if not isinstance(obj, JSObject):
   172→                return JSArray()
   173→            arr = JSArray()
   174→            arr._elements = list(obj.keys())
   175→            return arr
   176→
   177→        def values_fn(*args):
   178→            obj = args[0] if args else UNDEFINED
   179→            if not isinstance(obj, JSObject):
   180→                return JSArray()
   181→            arr = JSArray()
   182→            arr._elements = [obj.get(k) for k in obj.keys()]
   183→            return arr
   184→
   185→        def entries_fn(*args):
   186→            obj = args[0] if args else UNDEFINED
   187→            if not isinstance(obj, JSObject):
   188→                return JSArray()
   189→            arr = JSArray()
   190→            arr._elements = []
   191→            for k in obj.keys():
   192→                entry = JSArray()
   193→                entry._elements = [k, obj.get(k)]
   194→                arr._elements.append(entry)
   195→            return arr
   196→
   197→        def assign_fn(*args):
   198→            if not args:
   199→                return JSObject()
   200→            target = args[0]
   201→            if not isinstance(target, JSObject):
   202→                return target
   203→            for i in range(1, len(args)):
   204→                source = args[i]
   205→                if isinstance(source, JSObject):
   206→                    for k in source.keys():
   207→                        target.set(k, source.get(k))
   208→            return target
   209→
   210→        def get_prototype_of(*args):
   211→            obj = args[0] if args else UNDEFINED
   212→            if not isinstance(obj, JSObject):
   213→                return NULL
   214→            return getattr(obj, '_prototype', NULL) or NULL
   215→
   216→        def set_prototype_of(*args):
   217→            if len(args) < 2:
   218→                return UNDEFINED
   219→            obj, proto = args[0], args[1]

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

File created successfully at: /home/user/mquickjs-python/tests/test_rect.py

  1059→    def _to_js(self, value: Any) -> JSValue:
  1060→        """Convert a Python value to JavaScript."""
  1061→        if value is None:
  1062→            return NULL
  1063→        if isinstance(value, bool):
  1064→            return value
  1065→        if isinstance(value, (int, float)):
  1066→            return value
  1067→        if isinstance(value, str):
  1068→            return value
  1069→        if isinstance(value, list):
  1070→            arr = JSArray()
  1071→            for elem in value:
  1072→                arr.push(self._to_js(elem))
  1073→            return arr
  1074→        if isinstance(value, dict):
  1075→            obj = JSObject()
  1076→            for k, v in value.items():
  1077→                obj.set(str(k), self._to_js(v))
  1078→            return obj
  1079→        return UNDEFINED
  1080→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1055→        if isinstance(value, JSObject):
  1056→            return {k: self._to_python(v) for k, v in value._properties.items()}
  1057→        return value
  1058→
  1059→    def _to_js(self, value: Any) -> JSValue:
  1060→        """Convert a Python value to JavaScript."""
  1061→        if value is None:
  1062→            return NULL
  1063→        if isinstance(value, bool):
  1064→            return value
  1065→        if isinstance(value, (int, float)):
  1066→            return value
  1067→        if isinstance(value, str):
  1068→            return value
  1069→        # Already JS values - pass through
  1070→        if isinstance(value, (JSObject, JSFunction, JSCallableObject)):
  1071→            return value
  1072→        if value is UNDEFINED:
  1073→            return value
  1074→        if isinstance(value, list):
  1075→            arr = JSArray()
  1076→            for elem in value:
  1077→                arr.push(self._to_js(elem))
  1078→            return arr
  1079→        if isinstance(value, dict):
  1080→            obj = JSObject()
  1081→            for k, v in value.items():
  1082→                obj.set(str(k), self._to_js(v))
  1083→            return obj
  1084→        # Python callables become JS functions
  1085→        if callable(value):
  1086→            return value
  1087→        return UNDEFINED
  1088→

     1→"""JavaScript execution context."""
     2→
     3→import json
     4→import math
     5→import random
     6→import time
     7→from typing import Any, Dict, Optional
     8→
     9→from .parser import Parser
    10→from .compiler import Compiler
    11→from .vm import VM
    12→from .values import UNDEFINED, NULL, JSValue, JSObject, JSCallableObject, JSArray, JSRegExp, to_string, to_number
    13→from .errors import JSError, MemoryLimitError, TimeLimitError
    14→
    15→
    16→class JSContext:
    17→    """JavaScript execution context with configurable limits."""
    18→
    19→    def __init__(
    20→        self,

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     8→
     9→from .parser import Parser
    10→from .compiler import Compiler
    11→from .vm import VM
    12→from .values import UNDEFINED, NULL, JSValue, JSObject, JSCallableObject, JSArray, JSFunction, JSRegExp, to_string, to_number
    13→from .errors import JSError, MemoryLimitError, TimeLimitError
    14→
    15→
    16→class JSContext:

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→"""
     2→Test for exposing Python classes to JavaScript.
     3→
     4→This replicates the test_rect.js test but exposes Python Rectangle and FilledRectangle
     5→classes to the JavaScript context, demonstrating Python/JS interop.
     6→"""
     7→import pytest
     8→from pathlib import Path
     9→
    10→from mquickjs_python import JSContext
    11→from mquickjs_python.values import JSObject, JSCallableObject, JSFunction, UNDEFINED
    12→
    13→
    14→def create_rectangle_constructor(ctx, object_prototype):
    15→    """Create a Rectangle constructor that can be used from JavaScript."""
    16→
    17→    # Create the Rectangle prototype
    18→    rectangle_prototype = JSObject(object_prototype)
    19→
    20→    # Constructor function - new Rectangle(x, y)
    21→    def rectangle_constructor(*args):
    22→        obj = JSObject(rectangle_prototype)
    23→        obj.set("x", args[0] if len(args) > 0 else UNDEFINED)
    24→        obj.set("y", args[1] if len(args) > 1 else UNDEFINED)
    25→        return obj
    26→
    27→    # Create a callable object that acts as constructor
    28→    rect_constructor = JSCallableObject(rectangle_constructor)
    29→    rect_constructor._name = "Rectangle"
    30→    rect_constructor.set("prototype", rectangle_prototype)
    31→    rectangle_prototype.set("constructor", rect_constructor)
    32→
    33→    # Static method: Rectangle.getClosure(str) returns a function that returns str
    34→    def get_closure(*args):
    35→        captured = args[0] if args else UNDEFINED
    36→        def closure_fn(*inner_args):
    37→            return captured
    38→        return closure_fn
    39→
    40→    rect_constructor.set("getClosure", get_closure)
    41→
    42→    # Static method: Rectangle.call(callback, arg) calls callback with arg
    43→    def call_fn(*args):
    44→        callback = args[0] if len(args) > 0 else UNDEFINED
    45→        arg = args[1] if len(args) > 1 else UNDEFINED
    46→        if isinstance(callback, JSFunction):
    47→            # Call JS function through context
    48→            return ctx._call_function(callback, [arg])
    49→        elif callable(callback):
    50→            return callback(arg)
    51→        return UNDEFINED
    52→
    53→    rect_constructor.set("call", call_fn)
    54→
    55→    return rect_constructor, rectangle_prototype
    56→
    57→
    58→def create_filled_rectangle_constructor(object_prototype, rectangle_prototype):
    59→    """Create a FilledRectangle constructor that inherits from Rectangle."""

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    80→
    81→class TestRectangle:
    82→    """Tests for Rectangle class interop between Python and JavaScript."""
    83→
    84→    def test_rectangle_basic(self):
    85→        """Test creating a Rectangle from JavaScript."""
    86→        ctx = JSContext()
    87→
    88→        # Create and expose Rectangle constructor
    89→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
    90→        ctx.set("Rectangle", rect_constructor)
    91→
    92→        # Test from JavaScript
    93→        result = ctx.eval("""
    94→            var r = new Rectangle(100, 200);

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    95→            r.x + ',' + r.y;
    96→        """)
    97→        assert result == "100,200"
    98→
    99→    def test_rectangle_x_y_properties(self):
   100→        """Test Rectangle x and y properties individually."""
   101→        ctx = JSContext()
   102→
   103→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
   104→        ctx.set("Rectangle", rect_constructor)
   105→
   106→        assert ctx.eval("new Rectangle(100, 200).x") == 100
   107→        assert ctx.eval("new Rectangle(100, 200).y") == 200
   108→

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   105→
   106→        assert ctx.eval("new Rectangle(100, 200).x") == 100
   107→        assert ctx.eval("new Rectangle(100, 200).y") == 200
   108→
   109→    def test_filled_rectangle_inheritance(self):
   110→        """Test FilledRectangle inheriting from Rectangle."""
   111→        ctx = JSContext()
   112→
   113→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
   114→        filled_constructor = create_filled_rectangle_constructor(ctx._object_prototype, rect_prototype)
   115→
   116→        ctx.set("Rectangle", rect_constructor)
   117→        ctx.set("FilledRectangle", filled_constructor)
   118→

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   121→            r2.x + ',' + r2.y + ',' + r2.color;
   122→        """)
   123→        assert result == "100,200,1193046"
   124→
   125→    def test_rectangle_get_closure(self):
   126→        """Test Rectangle.getClosure static method."""
   127→        ctx = JSContext()
   128→
   129→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
   130→        ctx.set("Rectangle", rect_constructor)
   131→
   132→        result = ctx.eval("""
   133→            var func = Rectangle.getClosure("abcd");
   134→            func();

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   134→            func();
   135→        """)
   136→        assert result == "abcd"
   137→
   138→    def test_rectangle_call_callback(self):
   139→        """Test Rectangle.call static method with JavaScript callback."""
   140→        ctx = JSContext()
   141→
   142→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
   143→        ctx.set("Rectangle", rect_constructor)
   144→
   145→        result = ctx.eval("""
   146→            function cb(param) {
   147→                return "test" + param;

The file /home/user/mquickjs-python/tests/test_rect.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   149→            Rectangle.call(cb, "abc");
   150→        """)
   151→        assert result == "testabc"
   152→
   153→    def test_full_test_rect_js(self):
   154→        """Run the full test_rect.js test file with Python-exposed classes."""
   155→        ctx = JSContext()
   156→
   157→        # Create and expose both constructors
   158→        rect_constructor, rect_prototype = create_rectangle_constructor(ctx, ctx._object_prototype)
   159→        filled_constructor = create_filled_rectangle_constructor(ctx._object_prototype, rect_prototype)
   160→
   161→        ctx.set("Rectangle", rect_constructor)
   162→        ctx.set("FilledRectangle", filled_constructor)
   163→

No matches found

src/mquickjs_python/vm.py:759:                result = self._call_callback(method, [], value)
src/mquickjs_python/vm.py:1006:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1017:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1036:                acc = vm._call_callback(callback, [acc, elem, i, arr])
src/mquickjs_python/vm.py:1044:                vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1072:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1082:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1092:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1102:                val = vm._call_callback(callback, [elem, i, arr])
src/mquickjs_python/vm.py:1752:            # Use synchronous execution (like _call_callback)
src/mquickjs_python/vm.py:1753:            return self._call_callback(getter, [], this_val)
src/mquickjs_python/vm.py:1761:            # Use synchronous execution (like _call_callback)
src/mquickjs_python/vm.py:1762:            self._call_callback(setter, [value], this_val)
src/mquickjs_python/vm.py:1797:    def _call_callback(self, callback: JSValue, args: List[JSValue], this_val: JSValue = None) -> JSValue:

  1797→    def _call_callback(self, callback: JSValue, args: List[JSValue], this_val: JSValue = None) -> JSValue:
  1798→        """Call a callback function synchronously and return the result."""
  1799→        if isinstance(callback, JSFunction):
  1800→            # Save current stack position AND call stack depth
  1801→            stack_len = len(self.stack)
  1802→            call_stack_len = len(self.call_stack)
  1803→
  1804→            # Invoke the function
  1805→            self._invoke_js_function(callback, args, this_val if this_val is not None else UNDEFINED)
  1806→
  1807→            # Execute until the call returns (back to original call stack depth)
  1808→            while len(self.call_stack) > call_stack_len:
  1809→                self._check_limits()
  1810→                frame = self.call_stack[-1]
  1811→                func = frame.func
  1812→                bytecode = func.bytecode
  1813→
  1814→                if frame.ip >= len(bytecode):
  1815→                    self.call_stack.pop()
  1816→                    if len(self.stack) > stack_len:
  1817→                        return self.stack.pop()
  1818→                    return UNDEFINED
  1819→
  1820→                op = OpCode(bytecode[frame.ip])
  1821→                frame.ip += 1
  1822→
  1823→                # Get argument if needed
  1824→                arg = None
  1825→                if op in (OpCode.JUMP, OpCode.JUMP_IF_FALSE, OpCode.JUMP_IF_TRUE, OpCode.TRY_START):
  1826→                    low = bytecode[frame.ip]
  1827→                    high = bytecode[frame.ip + 1]
  1828→                    arg = low | (high << 8)
  1829→                    frame.ip += 2
  1830→                elif op in (
  1831→                    OpCode.LOAD_CONST, OpCode.LOAD_NAME, OpCode.STORE_NAME,
  1832→                    OpCode.LOAD_LOCAL, OpCode.STORE_LOCAL,
  1833→                    OpCode.LOAD_CLOSURE, OpCode.STORE_CLOSURE,
  1834→                    OpCode.LOAD_CELL, OpCode.STORE_CELL,
  1835→                    OpCode.CALL, OpCode.CALL_METHOD, OpCode.NEW,
  1836→                    OpCode.BUILD_ARRAY, OpCode.BUILD_OBJECT, OpCode.BUILD_REGEX,
  1837→                    OpCode.MAKE_CLOSURE,
  1838→                ):
  1839→                    arg = bytecode[frame.ip]
  1840→                    frame.ip += 1
  1841→
  1842→                self._execute_opcode(op, arg, frame)
  1843→
  1844→            # Get result from stack
  1845→            if len(self.stack) > stack_len:
  1846→                return self.stack.pop()
  1847→            return UNDEFINED
  1848→        elif callable(callback):
  1849→            result = callback(*args)
  1850→            return result if result is not None else UNDEFINED
  1851→        else:
  1852→            raise JSTypeError(f"{callback} is not a function")
  1853→
  1854→    def _invoke_js_function(
  1855→        self,
  1856→        func: JSFunction,

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

876:        def eval_fn(*args):
984:    def eval(self, code: str) -> Any:

   984→    def eval(self, code: str) -> Any:
   985→        """Evaluate JavaScript code and return the result.
   986→
   987→        Args:
   988→            code: JavaScript source code to evaluate
   989→
   990→        Returns:
   991→            The result of evaluating the code, converted to Python types
   992→
   993→        Raises:
   994→            JSSyntaxError: If the code has syntax errors
   995→            JSError: If a JavaScript error is thrown
   996→            MemoryLimitError: If memory limit is exceeded
   997→            TimeLimitError: If time limit is exceeded
   998→        """
   999→        # Parse the code
  1000→        parser = Parser(code)
  1001→        ast = parser.parse()
  1002→
  1003→        # Compile to bytecode
  1004→        compiler = Compiler()
  1005→        compiled = compiler.compile(ast)
  1006→
  1007→        # Execute
  1008→        vm = VM(memory_limit=self.memory_limit, time_limit=self.time_limit)
  1009→
  1010→        # Set up globals
  1011→        vm.globals.update(self._globals)
  1012→
  1013→        result = vm.run(compiled)
  1014→
  1015→        # Update globals from VM
  1016→        self._globals.update(vm.globals)
  1017→
  1018→        return self._to_python(result)
  1019→
  1020→    def get(self, name: str) -> Any:
  1021→        """Get a global variable.
  1022→
  1023→        Args:
  1024→            name: Variable name
  1025→
  1026→        Returns:
  1027→            The value of the variable, converted to Python types
  1028→        """
  1029→        value = self._globals.get(name, UNDEFINED)
  1030→        return self._to_python(value)
  1031→
  1032→    def set(self, name: str, value: Any) -> None:
  1033→        """Set a global variable.

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/context.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1014→
  1015→        # Update globals from VM
  1016→        self._globals.update(vm.globals)
  1017→
  1018→        return self._to_python(result)
  1019→
  1020→    def _call_function(self, func: JSFunction, args: list) -> Any:
  1021→        """Call a JavaScript function with the given arguments.
  1022→
  1023→        This is used internally to invoke JSFunction objects from Python code.
  1024→        """
  1025→        vm = VM(memory_limit=self.memory_limit, time_limit=self.time_limit)
  1026→        vm.globals.update(self._globals)
  1027→        result = vm._call_callback(func, args, UNDEFINED)
  1028→        self._globals.update(vm.globals)
  1029→        return result
  1030→
  1031→    def get(self, name: str) -> Any:
  1032→        """Get a global variable.
  1033→
  1034→        Args:
  1035→            name: Variable name

============================= test session starts ==============================
platform linux -- Python 3.11.14, pytest-9.0.2, pluggy-1.6.0 -- /home/user/mquickjs-python/.venv/bin/python
cachedir: .pytest_cache
rootdir: /home/user/mquickjs-python
configfile: pyproject.toml
collecting ... collected 6 items

tests/test_rect.py::TestRectangle::test_rectangle_basic PASSED           [ 16%]
tests/test_rect.py::TestRectangle::test_rectangle_x_y_properties PASSED  [ 33%]
tests/test_rect.py::TestRectangle::test_filled_rectangle_inheritance PASSED [ 50%]
tests/test_rect.py::TestRectangle::test_rectangle_get_closure PASSED     [ 66%]
tests/test_rect.py::TestRectangle::test_rectangle_call_callback PASSED   [ 83%]
tests/test_rect.py::TestRectangle::test_full_test_rect_js PASSED         [100%]

============================== 6 passed in 0.09s ===============================

........................................................................ [ 17%]
....................xxxx................................................ [ 35%]
........................................................................ [ 53%]
........................................................................ [ 71%]
........................................................................ [ 88%]
.............................................                            [100%]
401 passed, 4 xfailed in 4.00s

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

On branch claude/python-mquickjs-port-uPKcc
Your branch is ahead of 'origin/claude/python-mquickjs-port-uPKcc' by 2 commits.
  (use "git push" to publish your local commits)

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
	modified:   src/mquickjs_python/context.py
	modified:   src/mquickjs_python/vm.py

Untracked files:
  (use "git add <file>..." to include in what will be committed)
	tests/test_rect.py

no changes added to commit (use "git add" and/or "git commit -a")

3 files changed, 309 insertions(+), 2 deletions(-)
 create mode 100644 tests/test_rect.py

branch 'claude/python-mquickjs-port-uPKcc' set up to track 'origin/claude/python-mquickjs-port-uPKcc'.
To http://127.0.0.1:49259/git/simonw/mquickjs-python
   60f7b77..df438f4  claude/python-mquickjs-port-uPKcc -> claude/python-mquickjs-port-uPKcc

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Error: SyntaxError: Expected ';' after for init

     1→/*
     2→ * Javascript Micro benchmark
     3→ *
     4→ * Copyright (c) 2017-2019 Fabrice Bellard
     5→ * Copyright (c) 2017-2019 Charlie Gordon
     6→ *
     7→ * Permission is hereby granted, free of charge, to any person obtaining a copy
     8→ * of this software and associated documentation files (the "Software"), to deal
     9→ * in the Software without restriction, including without limitation the rights
    10→ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    11→ * copies of the Software, and to permit persons to whom the Software is
    12→ * furnished to do so, subject to the following conditions:
    13→ *
    14→ * The above copyright notice and this permission notice shall be included in
    15→ * all copies or substantial portions of the Software.
    16→ *
    17→ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18→ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19→ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    20→ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21→ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22→ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23→ * THE SOFTWARE.
    24→ */
    25→
    26→function pad(str, n) {
    27→    str += "";
    28→    while (str.length < n)
    29→        str += " ";
    30→    return str;
    31→}
    32→
    33→function pad_left(str, n) {
    34→    str += "";
    35→    while (str.length < n)
    36→        str = " " + str;
    37→    return str;
    38→}
    39→
    40→function pad_center(str, n) {
    41→    str += "";
    42→    while (str.length < n) {
    43→        if ((n - str.length) & 1)
    44→            str = str + " ";
    45→        else
    46→            str = " " + str;
    47→    }
    48→    return str;
    49→}
    50→
    51→var ref_data;
    52→var log_data;
    53→
    54→var heads  = [ "TEST", "N", "TIME (ns)", "REF (ns)", "SCORE (%)" ];
    55→var widths = [    22,   10,          9,     9,       9 ];
    56→var precs  = [     0,   0,           2,     2,       2 ];
    57→var total  = [     0,   0,           0,     0,       0 ];
    58→var total_score = 0;
    59→var total_scale = 0;
    60→
    61→if (typeof console == "undefined") {
    62→    var console = { log: print };
    63→}
    64→
    65→function log_line() {
    66→    var i, n, s, a;
    67→    s = "";
    68→    for (i = 0, n = arguments.length; i < n; i++) {
    69→        if (i > 0)
    70→            s += " ";
    71→        a = arguments[i];
    72→        if (typeof a == "number") {
    73→            total[i] += a;
    74→            a = a.toFixed(precs[i]);
    75→            a+="";
    76→            s += pad_left(a, widths[i]);
    77→        } else {
    78→            s += pad_left(a, widths[i]);
    79→        }
    80→    }
    81→    console.log(s);
    82→}
    83→
    84→var clocks_per_sec = 1000;
    85→var max_iterations = 10;
    86→var clock_threshold = 100;  /* favoring short measuring spans */
    87→var min_n_argument = 1;
    88→var get_clock;
    89→if (typeof performance != "undefined")
    90→    get_clock = performance.now;
    91→else
    92→    get_clock = Date.now;
    93→
    94→function log_one(text, n, ti) {
    95→    var ref;
    96→
    97→    if (ref_data)
    98→        ref = ref_data[text];
    99→    else
   100→        ref = null;

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

68:    for (i = 0, n = arguments.length; i < n; i++) {
126:        for(i = 0; i < 30; i++) {
129:            for (j = 0; j < max_iterations; j++) {
160:    for(j = 0; j < n; j++) {
167:    for(j = 0; j < n; j++) {
178:    for(j = 0; j < n; j++) {
192:    for(j = 0; j < n; j++) {
205:    for(j = 0; j < n; j++) {
217:    for(j = 0; j < n; j++) {
229:        for(i = 0; i < 10; i++) {
241:    for(i = 0; i < n; i++) {
242:        for(j = 0; j < len; j++) {
245:        for(j = 0; j < len; j++) {
257:    for(i = 0; i < len; i++)
260:    for(j = 0; j < n; j++) {
281:    for(i = 0; i < len; i++)
283:    for(j = 0; j < n; j++) {
303:    for(i = 0; i < len; i++)
305:    for(j = 0; j < n; j++) {
324:    for(j = 0; j < n; j++) {
326:        for(i = 0; i < len; i++)
337:    for(j = 0; j < n; j++) {
351:    for(j = 0; j < n; j++) {
353:        for(i = 0; i < len; i++)
355:        for(i = len - 1; i >= 0; i--)
366:    for(i = 0; i < len; i++) {
370:    for(j = 0; j < n; j++) {
371:        for(i = len - 1; i >= 0; i--)
381:    for(j = 0; j < n; j++) {
383:        for(i = 0; i < len; i++)
394:    for(i = 0; i < len; i++)
396:    for(j = 0; j < n; j++) {
399:        for(i = 0; i < len; i++)
411:    for(i = 0; i < len; i++)
414:    for(j = 0; j < n; j++) {
435:    for(i = 0; i < len; i++)
437:    for(j = 0; j < n; j++) {
458:        for(j = 0; j < n; j++) {
475:        for(j = 0; j < n; j++) {
495:    for(j = 0; j < n; j++) {
508:    for(j = 0; j < n; j++) {
526:    for(j = 0; j < n; j++) {
545:    for(j = 0; j < n; j++) {
559:    for(j = 0; j < n; j++) {
561:        for(i = 0; i < 1000; i++) {
575:    for(j = 0; j < n; j++) {
578:        for(i = 0; i < 1000; i++) {
593:    for(j = 0; j < n; j++) {
596:        for(i = 0; i < 1000; i++) {
611:    for(j = 0; j < n; j++) {
614:        for(i = 0; i < 1000; i++) {
637:    for(j = 0; j < n; j++) {
638:        for(i = 0; i < len; i++) {
641:        for(i = 0; i < len; i++) {
649:function array_for(n)
653:    for(i = 0; i < 100; i++)
655:    for(j = 0; j < n; j++) {
657:        for(i = 0; i < 100; i++) {
669:    for(i = 0; i < 100; i++)
671:    for(j = 0; j < n; j++) {
673:        for(i in r) {
685:    for(i = 0; i < 100; i++)
687:    for(j = 0; j < n; j++) {
689:        for(i of r) {
701:    for(j = 0; j < n; j++) {
702:        for(i = 0; i < 1000; i++)
713:    for(j = 0; j < n; j++) {
714:        for(i = 0; i < 1000; i++)
725:    for(j = 0; j < n; j++) {
726:        for(i = 0; i < 1000; i++)
737:    for(j = 0; j < n; j++) {
738:        for(i = 0; i < 1000; i++)
750:    for(j = 0; j < n; j++) {
765:    for(j = 0; j < n; j++) {
766:        for(i = 0; i < 100; i++)
778:    for(j = 0; j < n; j++) {
779:        for(i = 0; i < 100; i++)
791:    for(j = 0; j < n; j++) {
792:        for(i = 0; i < 100; i++)
804:    for(j = 0; j < n; j++) {
805:        for(i = 0; i < 100; i++) {
818:        for (var i = 0; i < n; i++)
822:        for (var i = 0; i < n; i++)
826:        for (var i = 0; i < n; i++)
831:        for (var i = 0; i < mid; i++)
833:        for (var i = mid; i < n; i++)
837:        for (var i = 0; i < n; i++)
841:        for (var i = 0; i < n; i++)
845:        for (var i = 0; i < n; i++)
849:        for (var i = 0; i < n; i++)
853:        for (var i = 0; i < n; i++)
857:        for (var i = 0; i < n; i++)
861:        for (var i = 0; i < n; i++)
865:        for (var i = 0; i < n; i++)
873:        for (var i = 1; i < n; i++)
877:        for (var i = 0; i < n - 1; i++)
899:        for (i = 0; i <= n; i++) {
903:        for (i = 0; i <= n; i++) {
908:    for (var f of sort_cases) {
910:        for (j = 0; j < 100; j++) {
927:            for (i = 1; i < n; i++) {
957:    for(j = 0; j < n; j++) {
967:    for(j = 0; j < n; j++) {
979:    for(j = 0; j < n; j++) {
992:    for(j = 0; j < n; j++) {
1081:    for (i = 1; i < argc;) {
1100:        for (j = 0, found = false; j < test_list.length; j++) {
1120:    for(i = 0; i < tests.length; i++) {

Comma expression in for: 10

Result: a b c

Error at lines 0-100: SyntaxError: Expected '}'
First error around line 26: function pad(str, n) {

Testing lines 26-50:
function pad(str, n) {
    str += "";
    while (str.length < n)
        str += " ";
    return str;
}

function pad_left(str, n) {
    str += "";
    while (str.length < n)
        str = " " + str;
 
...
OK

Lines 0-60: OK
Lines 0-70: SyntaxError: Expected '}'

    60→
    61→if (typeof console == "undefined") {
    62→    var console = { log: print };
    63→}
    64→
    65→function log_line() {
    66→    var i, n, s, a;
    67→    s = "";
    68→    for (i = 0, n = arguments.length; i < n; i++) {
    69→        if (i > 0)
    70→            s += " ";
    71→        a = arguments[i];
    72→        if (typeof a == "number") {
    73→            total[i] += a;
    74→            a = a.toFixed(precs[i]);
    75→            a+="";
    76→            s += pad_left(a, widths[i]);
    77→        } else {
    78→            s += pad_left(a, widths[i]);
    79→        }

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Error: ReferenceError: arguments is not defined

Lines 0-61: SyntaxError: Expected '}'
Lines 0-62: SyntaxError: Expected '}'
Lines 0-63: OK
Lines 0-64: OK
Lines 0-65: SyntaxError: Expected '}'
Lines 0-66: SyntaxError: Expected '}'
Lines 0-67: SyntaxError: Expected '}'
Lines 0-68: SyntaxError: Expected '}'
Lines 0-69: SyntaxError: Unexpected token: EOF
Lines 0-70: SyntaxError: Expected '}'
Lines 0-71: SyntaxError: Expected '}'
Lines 0-72: SyntaxError: Expected '}'
Lines 0-73: SyntaxError: Expected '}'
Lines 0-74: SyntaxError: Expected '}'
Lines 0-75: SyntaxError: Expected '}'
Lines 0-76: SyntaxError: Expected '}'
Lines 0-77: SyntaxError: Expected '}'
Lines 0-78: SyntaxError: Expected '}'
Lines 0-79: SyntaxError: Expected '}'
Lines 0-80: SyntaxError: Expected '}'
Lines 0-81: SyntaxError: Expected '}'
Lines 0-82: OK
Lines 0-83: OK
Lines 0-84: OK

Lines 0-100: SyntaxError: Expected '}'
Lines 0-150: SyntaxError: Expected '}'
Lines 0-200: OK
Lines 0-250: OK
Lines 0-300: SyntaxError: Expected '}'
Lines 0-400: SyntaxError: Expected '}'
Lines 0-500: SyntaxError: Expected '}'
Lines 0-600: SyntaxError: Expected '}'
Lines 0-700: SyntaxError: Expected ';' after for init
Lines 0-800: SyntaxError: Expected ';' after for init
Lines 0-900: SyntaxError: Expected ';' after for init
Lines 0-1000: SyntaxError: Expected ';' after for init

Lines 0-680: OK
Lines 0-681: SyntaxError: Expected '{'...
Lines 0-682: SyntaxError: Expected '}'...
Lines 0-683: SyntaxError: Expected '}'...
Lines 0-684: SyntaxError: Expected '}'...
Lines 0-685: SyntaxError: Unexpected token: EOF...
Lines 0-686: SyntaxError: Expected '}'...
Lines 0-687: SyntaxError: Expected '}'...
Lines 0-688: SyntaxError: Expected '}'...
Lines 0-689: SyntaxError: Expected ';' after for init
  Line 689:         for(i of r) {

for-of result: 6

   680→
   681→function array_for_of(n)
   682→{
   683→    var r, i, j, sum;
   684→    r = [];
   685→    for(i = 0; i < 100; i++)
   686→        r[i] = i;
   687→    for(j = 0; j < n; j++) {
   688→        sum = 0;
   689→        for(i of r) {
   690→            sum += i;
   691→        }
   692→        global_res = sum;
   693→    }
   694→    return n * 100;
   695→}
   696→
   697→function math_min(n)
   698→{
   699→    var i, j, r;

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Error: SyntaxError: Expected ';' after for init

for(i of r) Error: SyntaxError: Expected ';' after for init
for(var i of r): 6

16:    ForInStatement, ForOfStatement, BreakStatement, ContinueStatement,
235:        """Parse for/for-in/for-of statement."""
255:                # for (var x of iterable)
257:                self._expect(TokenType.RPAREN, "Expected ')' after for-of")
262:                return ForOfStatement(left, right, body)

   230→        self._expect(TokenType.RPAREN, "Expected ')' after condition")
   231→        self._consume_semicolon()
   232→        return DoWhileStatement(body, test)
   233→
   234→    def _parse_for_statement(self) -> Node:
   235→        """Parse for/for-in/for-of statement."""
   236→        self._expect(TokenType.LPAREN, "Expected '(' after 'for'")
   237→
   238→        # Parse init part
   239→        init = None
   240→        if self._match(TokenType.SEMICOLON):
   241→            pass  # No init
   242→        elif self._match(TokenType.VAR):
   243→            # Could be for or for-in
   244→            name = self._expect(TokenType.IDENTIFIER, "Expected variable name")
   245→            if self._match(TokenType.IN):
   246→                # for (var x in obj)
   247→                right = self._parse_expression()
   248→                self._expect(TokenType.RPAREN, "Expected ')' after for-in")
   249→                body = self._parse_statement()
   250→                left = VariableDeclaration(
   251→                    [VariableDeclarator(Identifier(name.value), None)]
   252→                )
   253→                return ForInStatement(left, right, body)
   254→            elif self._match(TokenType.OF):
   255→                # for (var x of iterable)
   256→                right = self._parse_expression()
   257→                self._expect(TokenType.RPAREN, "Expected ')' after for-of")
   258→                body = self._parse_statement()
   259→                left = VariableDeclaration(
   260→                    [VariableDeclarator(Identifier(name.value), None)]
   261→                )
   262→                return ForOfStatement(left, right, body)
   263→            else:
   264→                # Regular for with var init
   265→                var_init = None
   266→                if self._match(TokenType.ASSIGN):
   267→                    var_init = self._parse_assignment_expression()
   268→                declarations = [VariableDeclarator(Identifier(name.value), var_init)]
   269→                while self._match(TokenType.COMMA):
   270→                    n = self._expect(TokenType.IDENTIFIER, "Expected variable name")
   271→                    vi = None
   272→                    if self._match(TokenType.ASSIGN):
   273→                        vi = self._parse_assignment_expression()
   274→                    declarations.append(VariableDeclarator(Identifier(n.value), vi))
   275→                init = VariableDeclaration(declarations)
   276→                self._expect(TokenType.SEMICOLON, "Expected ';' after for init")
   277→        else:
   278→            # Expression init (could also be for-in with identifier or member expression)
   279→            # Parse with exclude_in=True so 'in' isn't treated as binary operator
   280→            expr = self._parse_expression(exclude_in=True)
   281→            if self._match(TokenType.IN):
   282→                # for (x in obj) or for (a.x in obj)
   283→                right = self._parse_expression()
   284→                self._expect(TokenType.RPAREN, "Expected ')' after for-in")
   285→                body = self._parse_statement()
   286→                return ForInStatement(expr, right, body)
   287→            init = expr
   288→            self._expect(TokenType.SEMICOLON, "Expected ';' after for init")
   289→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

The file /home/user/mquickjs-python/src/mquickjs_python/parser.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   273→                        vi = self._parse_assignment_expression()
   274→                    declarations.append(VariableDeclarator(Identifier(n.value), vi))
   275→                init = VariableDeclaration(declarations)
   276→                self._expect(TokenType.SEMICOLON, "Expected ';' after for init")
   277→        else:
   278→            # Expression init (could also be for-in/for-of with identifier or member expression)
   279→            # Parse with exclude_in=True so 'in' isn't treated as binary operator
   280→            expr = self._parse_expression(exclude_in=True)
   281→            if self._match(TokenType.IN):
   282→                # for (x in obj) or for (a.x in obj)
   283→                right = self._parse_expression()
   284→                self._expect(TokenType.RPAREN, "Expected ')' after for-in")
   285→                body = self._parse_statement()
   286→                return ForInStatement(expr, right, body)
   287→            elif self._match(TokenType.OF):
   288→                # for (x of iterable) or for (a.x of iterable)
   289→                right = self._parse_expression()
   290→                self._expect(TokenType.RPAREN, "Expected ')' after for-of")
   291→                body = self._parse_statement()
   292→                return ForOfStatement(expr, right, body)
   293→            init = expr
   294→            self._expect(TokenType.SEMICOLON, "Expected ';' after for init")
   295→
   296→        # Regular for loop
   297→        test = None
   298→        if not self._check(TokenType.SEMICOLON):

for(i of r): 6

Error: ReferenceError: scriptArgs is not defined