Make ES parser less strict

[kdy1]

Describe the feature

We should recover from all recoverable errors

Babel plugin or link to the feature description

No response

Additional context

No response

[kdy1]

@claude fix it

[claude]

Claude finished @kdy1's task in 16m 51s —— View job • claude/issue-11468-20260121-1513 • Create PR ➔

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Making ES Parser Less Strict

• Understand the issue: Make ES parser less strict
• Explore existing error recovery patterns in the parser
• Implement recovery for missing closing brackets/parens
• Implement recovery for missing commas in lists
• Implement recovery for unexpected tokens in statements
• Run tests and ensure they pass
• Write additional tests for the changes
• Commit and push changes

Summary:

This PR makes the ES parser less strict by implementing error recovery for common syntax errors. The parser now emits errors but continues parsing, producing a valid AST for IDE tooling and other use cases where partial or incomplete code needs to be analyzed.

Changes made:

1. New macro: Added expect_or_recover! macro that emits errors but continues parsing instead of failing

2. Array literals: Recovery for missing commas and closing brackets ([1 2 3] → emits error, parses as [1, 2, 3])

3. Object literals: Recovery for missing commas ({a: 1 b: 2} → emits error, parses correctly)

4. Function calls: Recovery for missing commas and closing parens in arguments

5. Control flow statements: Recovery for missing parens in:

   • if statements (if true { } → emits error, parses correctly)
   • while statements
   • do-while statements
   • for statements
   • switch statements

6. Tests: Added 6 new error recovery tests covering the above cases

7. Cleanup: Removed one TypeScript test (issue-7104) that now parses successfully with recovery

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