Claude Code transcript - page 11/12

The file /home/user/mquickjs-python/README.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    69→## Development
    70→
    71→This project uses [uv](https://github.com/astral-sh/uv) for dependency management.
    72→
    73→```bash
    74→# Run tests
    75→uv run pytest
    76→```
    77→
    78→## License
    79→
    80→MIT License - see [LICENSE](LICENSE) file.

Date: Wed Dec 24 16:31:45 2025 +0000
 1 file changed, 47 insertions(+), 13 deletions(-)

     1→# mquickjs-python
     2→
     3→A pure Python JavaScript engine, inspired by [MicroQuickJS](https://github.com/bellard/mquickjs).
     4→
     5→## Overview
     6→
     7→This project provides a JavaScript execution environment with:
     8→
     9→- **Memory limits** - Configurable maximum memory usage
    10→- **Time limits** - Configurable execution timeout
    11→- **Pure Python** - No C extensions or external dependencies
    12→- **Broad ES5+ support** - Variables, functions, closures, classes, iterators, promises, regex, and more
    13→
    14→## Usage
    15→
    16→```python
    17→from mquickjs_python import JSContext
    18→
    19→# Create a context with optional limits
    20→ctx = JSContext(memory_limit=1024*1024, time_limit=5.0)
    21→
    22→# Evaluate JavaScript code
    23→result = ctx.eval("1 + 2")  # Returns 3
    24→
    25→# Functions and closures
    26→ctx.eval("""
    27→    function makeCounter() {
    28→        var count = 0;
    29→        return function() { return ++count; };
    30→    }
    31→    var counter = makeCounter();
    32→""")
    33→assert ctx.eval("counter()") == 1
    34→assert ctx.eval("counter()") == 2
    35→
    36→# Regular expressions
    37→result = ctx.eval('/hello (\\w+)/.exec("hello world")')
    38→# Returns ['hello world', 'world']
    39→
    40→# Error handling with line/column tracking
    41→ctx.eval("""
    42→try {
    43→    throw new Error("oops");
    44→} catch (e) {
    45→    // e.lineNumber and e.columnNumber are set
    46→}
    47→""")
    48→```
    49→
    50→## Supported Features
    51→
    52→- **Core**: variables, operators, control flow, functions, closures
    53→- **Objects**: object literals, prototypes, getters/setters, JSON
    54→- **Arrays**: literals, methods (map, filter, reduce, etc.), typed arrays
    55→- **Functions**: arrow functions, rest/spread, default parameters
    56→- **Classes**: class syntax, inheritance, static methods
    57→- **Iteration**: for-of, iterators, generators
    58→- **Async**: Promises, async/await
    59→- **Regex**: Full regex support with capture groups, lookahead/lookbehind
    60→- **Error handling**: try/catch/finally with stack traces
    61→
    62→## Known Limitations
    63→
    64→See [open-problems.md](open-problems.md) for details on:
    65→- Deep nesting limits (parser uses recursion)
    66→- Some regex edge cases with optional lookahead captures
    67→- Error constructor location tracking
    68→
    69→## Development
    70→
    71→This project uses [uv](https://github.com/astral-sh/uv) for dependency management.
    72→
    73→```bash
    74→# Run tests
    75→uv run pytest
    76→```
    77→
    78→## License
    79→
    80→MIT License - see [LICENSE](LICENSE) file.
    81→
    82→Based on QuickJS by Fabrice Bellard and Charlie Gordon.
    83→

<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/README.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    78→## License
    79→
    80→MIT License - see [LICENSE](LICENSE) file.
    81→
    82→Based on MicroQuickJS by Fabrice Bellard.
    83→

Date: Wed Dec 24 16:31:45 2025 +0000
 1 file changed, 47 insertions(+), 13 deletions(-)