Port TypeScript PR #62950: Ignore computed name parents when looking up containing functions

[Copilot]

Ports microsoft/TypeScript#62950

When looking up containing functions from within a computed property name (e.g., [yield 0]), the compiler would incorrectly treat the method being defined as the containing function, causing infinite recursion during contextual typing.

function* g() {
  let x: any = {
    *[yield 0]() {}  // yield should be in context of g(), not the method
  };
}

Changes

• GetContainingFunction (internal/ast/utilities.go): Skip over ComputedPropertyName nodes by jumping to node.Parent.Parent
• getContainingFunctionOrClassStaticBlock (internal/checker/utilities.go): Same fix

This also fixes await expressions in computed property names inside class static blocks now correctly reporting errors.

Tests Added

Added tests from the upstream PR as local tests:

• yieldInComputedNameOfContextuallyTypedObjectNoCrash1.ts - tests yield in computed property name
• classStaticBlock29.ts - tests await in computed property name inside class static block

Not Ported

• getContainingFunctionDeclaration - only used by convertParamsToDestructuredObject refactor service which doesn't exist in the Go codebase yet
• getContainingClassStaticBlock - no callers in the Go codebase

Custom agent used: Strada to Corsa Port Expert
A Go and TypeScript expert who can easily figure out how to port PRs from one language to another

Original prompt

Port microsoft/TypeScript#62950

Custom agent used: Strada to Corsa Port Expert
A Go and TypeScript expert who can easily figure out how to port PRs from one language to another

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[jakebailey]

where is getContainingFunctionDeclaration?

[jakebailey]

It's suspect that this is ported but the func is unused

[Copilot]

Removed in c0af02c. It was unused since the equivalent TypeScript logic (in addInheritedMembers) isn't in the Go codebase.

[RyanCavanaugh]

@copilot also add the new tests from the upstream PR as local tests in this repo

[Copilot]

where is getContainingFunctionDeclaration?

getContainingFunctionDeclaration wasn't ported because it's only used by convertParamsToDestructuredObject refactor service, which doesn't exist in the Go codebase yet. The function would have no callers.

@copilot also add the new tests from the upstream PR as local tests in this repo

Added in c0af02c:

• yieldInComputedNameOfContextuallyTypedObjectNoCrash1.ts - tests yield in computed property name
• classStaticBlock29.ts - tests await in computed property name inside class static block

[RyanCavanaugh]

@copilot getContainingClassStaticBlock appears to have no callers, remove it from the codebase

[Copilot]

@copilot getContainingClassStaticBlock appears to have no callers, remove it from the codebase

Already removed in c0af02c.