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JavaScript

Tier 1 plugin for JavaScript (ES modules, CommonJS patterns, classes). Shared architecture with TypeScript plugin; no type-only syntax.

Implementation

Plugin cratecrates/rgctl-lang-javascript (JavaScriptPlugin)
Grammartree-sitter-javascript
Extensions.js, .jsx, .mjs
Discoverrgctl discover . -l javascript -e node_modules --with-cfg
CFG / taintEnabled

Tree-sitter node kinds: function_declaration, method_definition, arrow_function, class_declaration, import_statement.

What is extracted

Nodes

  • Function — declarations, methods, arrow functions
  • Class
  • Import — ES module imports

Edges

EdgeMeaning
CALLSCall expressions
EXTENDSclass Foo extends Bar
INSTANTIATESnew Foo()
ImportModule import graph

Method qualified_name uses ClassName.method form (e.g. OrderService.checkout).

Verification

Fixturergctl-tests/ecommerce-javascript
Example corpusexample/node/test (-l javascript)
Smoke scriptrgctl-tests/gql-verification-smoke/verify-extraction-gql-javascript.sh

GQL verification queries

Fixture probes

ProbeGQL
Module graph (Import)MATCH (n:Import) RETURN n LIMIT 10000
Heritage (EXTENDS)MATCH (a)-[:EXTENDS]->(b) RETURN a,b LIMIT 10000
Instantiation (INSTANTIATES)MATCH (a)-[:INSTANTIATES]->(b) RETURN a,b LIMIT 10000
Call resolution (CALLS)MATCH (a)-[:CALLS]->(b) RETURN a,b LIMIT 10000
Class method FQN (OrderService.*)MATCH (n:Function) WHERE n.qualified_name LIKE 'OrderService.*' RETURN n LIMIT 20

Example smoke (example/node/test)

ProbeGQL
Import (scale)MATCH (n:Import) RETURN n LIMIT 10000
EXTENDS (scale)MATCH (a)-[:EXTENDS]->(b) RETURN a,b LIMIT 10000
INSTANTIATES (scale)MATCH (a)-[:INSTANTIATES]->(b) RETURN a,b LIMIT 10000
CALLS (scale)MATCH (a)-[:CALLS]->(b) RETURN a,b LIMIT 10000

Related

  • Languages index
  • TypeScript — shared extraction model with interfaces and decorators
  • Openspec: javascript-module-graph, javascript-heritage, javascript-call-resolution