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    SpiderMonkey

    SpiderMonkey is Mozilla's JavaScript engine written in C/C++. It is used in various Mozilla products, including Firefox, and is available under the MPL2.

    SpiderMonkey 31 is the most recent standalone source code release. It is largely the same engine that shipped with Firefox 31. Full source code is available here: https://people.mozilla.org/~sstangl/mozjs-31.2.0.rc0.tar.bz2

    The next release will be SpiderMonkey 38, around May 2015.

    Guides

    Building

    SpiderMonkey Build Documentation
    How to get SpiderMonkey source code, build it, and run the test suite.

    Using SpiderMonkey

    Introduction to the JavaScript shell
    Documentation of the command-line JavaScript shell, js.
    JSAPI User Guide
    This guide provides an overview of SpiderMonkey and describes how you can embed engine calls in your applications to make them JavaScript-aware.
    JSAPI cookbook
    Shows the JSAPI translation of some commonly used JavaScript expressions and statements.
    GC Rooting Guide
    Guide on how to write code compatible with the Generational GC in SpiderMonkey.
    How to embed the JavaScript engine
    An older tutorial about embedding SpiderMonkey.

    Hacking on SpiderMonkey

    New to SpiderMonkey
    A guide to hacking on SpiderMonkey.
    Setting up CDT to work on SpiderMonkey
    How to configure Eclipse to work on the SpiderMonkey code.
    Contributing to SpiderMonkey
    A slidecast that is less than four minutes long.
    Running Automated JavaScript Tests
    How to run the JavaScript test suites.
    Creating JavaScript tests
    How to add tests to the JavaScript test suites.

    Reference

    JSAPI Reference
    SpiderMonkey API reference.
    JS Debugger API Reference
    API reference for the Debugger object introduced in SpiderMonkey 1.8.6, which corresponds to Gecko 8.0 (Firefox 8.0 / Thunderbird 8.0 / SeaMonkey 2.5).
    Bytecode descriptions
    Listing of SpiderMonkey's bytecodes.
    Parser API
    Reflection of the SpiderMonkey parser, made available as a JavaScript API.

    Tips, tricks and philosophy

    Future Directions
    Future directions for functionality, design, and coding practices.
    SpiderMonkey Internals
    A design overview and a file-by-file walkthrough of the implementation.
    Bytecode Reference
    SpiderMonkey bytecode reference.
    SpiderMonkey Internals: GC
    Separate internals article on the GC
    SpiderMonkey Internals: Hacking Tips
    Collection of helpful tips & tools for hacking on the engine

    Releases

    SpiderMonkey release notes
    Current and past versions: 38, 31, 24, 17
     

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