codemap-javascript

A JavaScript / JSX indexer for CodeMap, distributed as an independent PyPI package.

What this package covers

Extension Grammar Notes
.js tree-sitter-javascript Plain JavaScript
.jsx tree-sitter-javascript React-style JSX (the grammar handles JSX natively)
.mjs tree-sitter-javascript ES module
.cjs tree-sitter-javascript CommonJS module

A single grammar instance handles all four extensions — .jsx is not a separate grammar in tree-sitter-javascript.

Install

pip install codemap-javascript

After installation, codemap doctor lists javascript alongside the built-in indexers (ADR-004 + ADR-L001).

What it captures

Backed by tree-sitter-javascript. Single-file, no cross-file resolution:

AST node Symbol kind SymbolID descriptor
function_declaration function <path>/name().
class_declaration class <path>/Cls#
method_definition (inside class) method <path>/Cls#name().
Top-level const / let / var variable <path>/Name.

Edges:

  • import_statement is read for future cross-module bridge consumption, but no edge is emitted at the module top-level (parity with the TypeScript plugin).

SymbolID encoding

scip-javascript . . . src/app/Service.js/UserService#login().
└─────────────┘     └──────────────────────────────────────┘
     scheme              file → namespaces / type / method

Why a separate plugin (vs. extending codemap-typescript)

TypeScript is a syntactic superset of JavaScript, so tree-sitter-typescript can parse most .js / .jsx files. We ship a dedicated plugin instead for three reasons:

  1. Clean dependency: codemap-javascript does not depend on tree-sitter-typescript. Users who only have JavaScript code do not need the larger grammar.
  2. JS-specific error recovery: when a .js file has a syntax error, the JavaScript grammar's error nodes point at JS-shaped tokens rather than TS-shaped ones, which produces tighter diagnostics.
  3. Independent versioning: JS language updates (decorators, class fields, RegExp v flag) can ship at their own cadence without bumping the TypeScript plugin.

For pure type-extraction purposes the two plugins produce equivalent symbol output for .js / .jsx files. Install whichever matches your codebase; install both if you have a mixed code-base.

Tests

pip install -e ".[dev]"
pytest

Limits / next steps

  • No cross-file import resolution. A javascript_cross_module bridge, sibling to python_cross_module, would be a future addition.
  • Arrow functions assigned to top-level const are indexed as variable, not function — matching the TypeScript plugin. Named arrow detection across both plugins is a v0.2.x improvement.
  • JSX-specific component patterns are not yet captured beyond the underlying function/class symbols.

License

MIT — same as the host project.

Project links

Data verified by PyPI on Aug 17, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

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Latest release

1 maintainer

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Avatar for xueqiang from gravatar.com xueqiang

Credits

Author: CodeMap Contributors

GitHub Statistics

Data verified by PyPI on Aug 17, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT

Requires

Python >=3.11

Provides Extra

dev

Tags

codemap indexer javascript jsx tree-sitter

Classifiers

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