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docs: add guidance for code block highlight line numbers to AGENTS.md #88430

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timneutkens merged 1 commit into from
Jan 12, 2026
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docs: add guidance for code block highlight line numbers to AGENTS.md #88430

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7 changes: 7 additions & 0 deletions AGENTS.md
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Expand Up @@ -309,3 +309,10 @@ See [Codebase structure](#codebase-structure) above for detailed explanations.
- `findSourceMap()` needs `--enable-source-maps` flag or returns undefined
- Source map paths vary (webpack: `./src/`, tsc: `src/`) - try multiple formats
- `process.cwd()` in stack trace formatting produces different paths in tests vs production

### Documentation Code Blocks

- When adding `highlight={...}` attributes to code blocks, carefully count the actual line numbers within the code block
- Account for empty lines, import statements, and type imports that shift line numbers
- Highlights should point to the actual relevant code, not unrelated lines like `return (` or framework boilerplate
- Double-check highlights by counting lines from 1 within each code block
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