feat: Add "Fix all: X" code action for codefixes appearing multiple times in a file

[Copilot]

Add fix all per code fix

Screen.Recording.2026-07-30.at.9.13.07.AM.mov

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npm i https://pkg.pr.new/@typespec/compiler@11468

npm i https://pkg.pr.new/@typespec/playground@11468

commit: 7de17a1

[azure-sdk-automation]

You can try these changes here

🛝 Playground	🌐 Website	🛝 VSCode Extension

[timotheeguerin]

@copilot I don't see the fix all in the playground

[Copilot]

@copilot I don't see the fix all in the playground

The playground uses its own Monaco code action provider (in packages/playground/src/services.ts) that doesn't go through the LSP server — so the "Fix all" logic I added to serverlib.ts wasn't visible there. Fixed in commit feat: add Fix all code action to playground code action provider: the playground's provider now does the same two-pass approach — grouping all fix IDs across the whole file first, then adding a Fix all: <label> action for any fix that appears more than once.

[timotheeguerin]

@copilot build fails now

vite v8.1.4 building client environment for production...
src/services.ts:400:42 - error TS18048: 'compiler' is possibly 'undefined'.

400         edits: Awaited<ReturnType<typeof compiler.resolveCodeFix>>,
                                             ~~~~~~~~

why are we adding all those computer types here they should be exported

[Copilot]

@copilot build fails now

vite v8.1.4 building client environment for production...

...

Fixed in the latest commit. The helper codeFixEditsToMonacoEdits is now a module-level function (so there's no captured compiler variable in its type), and it takes CodeFixEdit[] — using the CodeFix and CodeFixEdit types imported directly from @typespec/compiler instead of the inline Awaited<ReturnType<typeof compiler.resolveCodeFix>> expression.

[github-actions]

All changed packages have been documented.

• ✅ @typespec/compiler
• ✅ @typespec/playground

Show changes

@typespec/compiler - feature ✏️

Add Fix all: X code action for codefixes that can be applied to multiple instances in a file at once. When a codefix applies to more than one diagnostic of the same kind in a file, a Fix all: <fix label> quick fix action is now suggested alongside the individual fix.

@typespec/playground - feature ✏️

Add support for the Fix all: X code action in the playground, allowing a codefix that appears multiple times in a file to be applied to all instances at once.