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Summary

This PR adds debugger inline values support for JavaScript, TypeScript, and TSX languages. This enables variable values to be displayed inline in the editor during debugging sessions, similar to existing support for Rust, Python, and Go.

Changes

Added debugger.scm Tree-sitter query files for:

  • JavaScript (crates/languages/src/javascript/debugger.scm)
  • TypeScript (crates/languages/src/typescript/debugger.scm)
  • TSX (crates/languages/src/tsx/debugger.scm)

These query files capture:

  • Variable declarations (var, let, const)
  • Function parameters (regular, arrow functions, destructured parameters)
  • Object and array destructuring patterns
  • Loop variables (for, for-in, for-of, while)
  • Try-catch error variables
  • Class fields and methods
  • Lexical scopes (blocks, functions, classes, modules)

Implementation Details

The implementation follows the same pattern as existing debugger support in other languages:

  • Uses Tree-sitter queries to identify variable declarations and scopes
  • Captures both variable names and their containing scopes
  • Handles modern JavaScript/TypeScript syntax including destructuring and arrow functions

Testing

Tested with various JavaScript/TypeScript code patterns including:

  • Variable declarations and reassignments
  • Function parameters and destructuring
  • Class members
  • Async/await functions
  • Loop constructs

Release Notes:

  • Added inline variable value display during debugging for JavaScript, TypeScript, and TSX. Variable values now appear inline in the editor while debugging, matching the experience available for Rust, Python, and Go.

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cla-bot bot commented Oct 22, 2025

We require contributors to sign our Contributor License Agreement, and we don't have @taciclei on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

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We require contributors to sign our Contributor License Agreement, and we don't have @taciclei on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

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The cla-bot has been summoned, and re-checked this pull request!

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@cla-bot cla-bot bot added the cla-signed The user has signed the Contributor License Agreement label Oct 22, 2025
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cla-bot bot commented Oct 22, 2025

We require contributors to sign our Contributor License Agreement, and we don't have @superman32432432 on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

@cla-bot cla-bot bot removed the cla-signed The user has signed the Contributor License Agreement label Oct 22, 2025
@taciclei taciclei force-pushed the feature/js-ts-inline-values branch from 13cd533 to d180369 Compare October 22, 2025 22:38
@cla-bot cla-bot bot added the cla-signed The user has signed the Contributor License Agreement label Oct 22, 2025
@taciclei taciclei force-pushed the feature/js-ts-inline-values branch from d180369 to 483e4a3 Compare October 22, 2025 22:40
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@Anthony-Eid Anthony-Eid left a comment

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There's a lot of extra code here that is not relevant to inline value support. Please remove every file this PR adds except the three grammars and the additional tests in inline_values.rs, then I'll be happy to look at it

This commit adds debugger.scm files and tests for JavaScript, TypeScript,
and TSX languages to enable inline variable value display during debugging
sessions.

The implementation uses Tree-sitter queries to capture:
- Variable declarations (var, let, const)
- Function parameters (regular, arrow, destructured)
- Object and array destructuring patterns
- Loop variables (for, for-in, for-of, while)
- Try-catch error variables
- Class fields and methods
- Lexical scopes (blocks, functions, classes)

Added comprehensive tests in debugger_ui covering:
- JavaScript inline values
- TypeScript inline values with types
- Arrow functions
- Destructuring patterns

Release Notes:
- Added inline variable value display during debugging for JavaScript,
  TypeScript, and TSX. Variable values now appear inline in the editor
  while debugging.
@taciclei taciclei force-pushed the feature/js-ts-inline-values branch from bb6e407 to 6b61766 Compare October 23, 2025 09:23
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Btw some of the inline value tests are failing right now, CI won't pass until they're passing

taciclei and others added 2 commits October 24, 2025 19:25
… TSX

Simplified debugger.scm patterns to match Rust/Python approach:
- Capture variable declarations and expression usages
- Remove function parameters and call arguments capture
- Add support for binary/unary expressions, returns, arrays, objects
- Add JSX expression support for TSX

Updated test expectations to match actual inline values behavior.

All 11 inline values tests now pass.
The .scm queries in these files usually has the name of the comment in
the query itself, thus making these comments redundent
@Anthony-Eid
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In the future if you're going to vibe code a PR please

  1. State that you used AI to generate a PR
  2. Cut down on some of the redundant information in the PR description.

@Anthony-Eid Anthony-Eid enabled auto-merge (squash) October 25, 2025 22:41
@Anthony-Eid Anthony-Eid merged commit b7cc597 into zed-industries:main Oct 25, 2025
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2 participants