feat(parser): add ts error 1265 for TSTupleElement

[Sysix]

https://www.typescriptlang.org/play/?#code/LAKALgngDgpgBAQQDwBU4wB5hgOwCYDOcArjgNY4D2A7jgNoC6AfHALxx0FgBOAljgHMANHAB04rn0GMR40SkYNQoSLDgAhVOiy5CJclVqMW7Tj37CxE89IazxCu1dGSLigNzLw0eAGEtmNj4RKQUNPTMbBxyrrb28gyeICo+cAAiATrB+mFGkaYxNpZyKIleqvAAoplBeqGGESbR1lICMs6OZSBAA

[Sysix]

• feat(parser): add ts error 1257 for TSTupleElement #18146
• feat(parser): add ts error 1266 for TSTupleElement #18145
• feat(parser): add ts error 1265 for TSTupleElement #18144 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing 01-17-feat_parser_add_ts_error_1265_for_tstupleelement_ (349c886) with main (8da684e)}

Summary

✅ 42 untouched benchmarks
⏩ 3 skipped benchmarks¹

Footnotes

1. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull request overview

This PR adds support for TypeScript error 1265, which detects when a rest element follows another rest element in tuple types. The implementation correctly identifies cases where two array-type rest elements appear consecutively in a tuple definition (e.g., [...string[], ...boolean[]]), which is invalid TypeScript syntax.

Changes:

• Added error detection for consecutive rest elements with array types in tuple types
• Updated the parse_delimited_list function signature to accept FnMut closures instead of Fn
• Added new diagnostic function rest_element_cannot_follow_another_rest_element for TS error 1265

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
tasks/coverage/snapshots/parser_typescript.snap	Updated test coverage showing one additional negative test passing; removed the variadicTuples2.ts from expected syntax errors and added specific TS(1265) error messages
crates/oxc_parser/src/ts/types.rs	Implemented logic to track and detect consecutive rest elements with array types in tuple parsing, emitting TS error 1265 when appropriate
crates/oxc_parser/src/diagnostics.rs	Added rest_element_cannot_follow_another_rest_element diagnostic function and reorganized const_class_member function for better ordering
crates/oxc_parser/src/cursor.rs	Changed parse_delimited_list signature from Fn to FnMut to support closures that mutate captured state

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[graphite-app]

Merge activity

• Jan 18, 12:45 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Jan 18, 12:49 AM UTC: The Graphite merge queue couldn't merge this PR because it had merge conflicts.
• Jan 18, 10:25 AM UTC: Sysix added this pull request to the Graphite merge queue.
• Jan 18, 10:32 AM UTC: Merged by the Graphite merge queue.