feat(parser): improve error message for missing closing tokens that may be followed by a rest element

[sapphi-red]

Improves error message for imbalanced tokens that allows rest elements.

Before

  × Expected `,` but found `Identifier`
   ╭─[typescript/tests/cases/compiler/restParamModifier.ts:2:27]
 1 │ class C {
 2 │     constructor(...public rest: string[]) {}
   ·                           ──┬─
   ·                             ╰── `,` expected
 3 │ }
   ╰────

After

  × Expected `,` or `)` but found `Identifier`
   ╭─[typescript/tests/cases/compiler/restParamModifier.ts:2:27]
 1 │ class C {
 2 │     constructor(...public rest: string[]) {}
   ·                ┬          ──┬─
   ·                │            ╰── `,` or `)` expected
   ·                ╰── Opened here
 3 │ }
   ╰────

[sapphi-red]

• feat(parser): improve error messages for missing closing parentheses #15446
• feat(parser): improve error message for missing block closing tokens #15445
• feat(parser): improve error message for missing closing tokens that may be followed by a rest element #15444 👈 (View in Graphite)
• feat(parser): add more help messages to diagnostics #15440 : 1 other dependent PR (#15441 )
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #15444 will not alter performance

_{Comparing 11-05-feat_parser_improve_error_message_for_missing_closing_tokens_that_may_be_followed_by_a_rest_element (bfb3f76) with 11-05-feat_parser_add_more_help_messages_to_diagnostics (b5dc76a)}

Summary

✅ 37 untouched

[graphite-app]

Merge activity

• Nov 8, 4:28 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Nov 8, 4:39 AM UTC: Merged by the Graphite merge queue.