tree-sitter-glimmer-javascript

A tree-sitter grammar for Glimmer-flavored JavaScript (.gjs). Wraps tree-sitter-javascript and adds the <template>...</template> syntax used by Ember/Glimmer.

Source vs. generated files

The single source of truth for the grammar is grammar.js. Most of the files under src/ are produced by tree-sitter generate and must not be edited by hand — any change there will be overwritten on the next generation, and CI verifies that committed artifacts match what generation produces.

Hand-written (edit these):

• grammar.js — grammar definition
• src/scanner.c — external scanner (handles <template> raw text and custom ASI behavior)
• queries/**/*.scm — highlight, locals, and tags queries
• test/corpus/**/*.txt — parser test fixtures
• bindings/** — language binding code (Node, Rust, Python, Go, Swift, C)
• binding.gyp, Cargo.toml, package.json, tree-sitter.json — build and package metadata
• README.md

Auto-generated by tree-sitter generate (do not edit):

• src/parser.c — the parse table (the /* Automatically @generated by tree-sitter */ header is the canonical marker)
• src/grammar.json — JSON form of the evaluated grammar
• src/node-types.json — node type schema
• src/tree_sitter/parser.h, array.h, alloc.h — vendored tree-sitter runtime headers

If you change grammar.js or bump the tree-sitter CLI, run npm run build (or tree-sitter generate) and commit the regenerated files alongside your source change.