@sanity/lezer-groq

Lezer grammar for GROQ, providing syntax highlighting, folding, and indentation for CodeMirror 6.

Install

npm install @sanity/lezer-groq

Usage with CodeMirror

import {EditorView, basicSetup} from 'codemirror'
import {groq} from '@sanity/lezer-groq'

new EditorView({
  extensions: [basicSetup, groq()],
  parent: document.body,
})

Exports

• groq() - returns a LanguageSupport instance with the GROQ parser, highlight tags, folding, and indentation configured
• groqLanguage - the raw LRLanguage instance for advanced configuration
• parser - the Lezer LRParser for direct access to the parse tables

What's in the box

The Lezer grammar is an incremental LR parser that handles the full GROQ expression language:

• Filters, projections, pipes, dereferences, dot access, array traversal
• All operators with correct precedence (pipe, logical, comparison, arithmetic, exponentiation)
• Function calls and namespaced function calls (math::sum(), pt::text())
• String literals with escape sequence highlighting
• Keyword specialization (true, false, null, in, match, asc, desc)
• Code folding for filters, projections, arrays, and objects
• Auto-indentation and bracket closing

Build

The grammar source is src/groq.grammar. To regenerate the parser after editing:

pnpm build  # runs lezer-generator + rollup

License

MIT