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Use proper type parameter hosts in JS files #61013
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Original file line number | Diff line number | Diff line change |
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@@ -276,7 +276,6 @@ import { | |
getDirectoryPath, | ||
getEffectiveBaseTypeNode, | ||
getEffectiveConstraintOfTypeParameter, | ||
getEffectiveContainerForJSDocTemplateTag, | ||
getEffectiveImplementsTypeNodes, | ||
getEffectiveInitializer, | ||
getEffectiveJSDocHost, | ||
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@@ -16217,9 +16216,13 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |
return typeParameter.constraint === noConstraintType ? undefined : typeParameter.constraint; | ||
} | ||
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function getParentSymbolOfTypeParameter(typeParameter: TypeParameter): Symbol | undefined { | ||
function getEffectiveTypeParameterHost(typeParameter: TypeParameter) { | ||
const tp = getDeclarationOfKind<TypeParameterDeclaration>(typeParameter.symbol, SyntaxKind.TypeParameter)!; | ||
const host = isJSDocTemplateTag(tp.parent) ? getEffectiveContainerForJSDocTemplateTag(tp.parent) : tp.parent; | ||
return isJSDocTemplateTag(tp.parent) ? getEffectiveJSDocHost(tp.parent) : tp.parent; | ||
} | ||
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function getParentSymbolOfTypeParameter(typeParameter: TypeParameter): Symbol | undefined { | ||
const host = getEffectiveTypeParameterHost(typeParameter); | ||
return host && getSymbolOfNode(host); | ||
} | ||
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@@ -36138,8 +36141,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |
if (candidate.typeParameters) { | ||
// If we are *inside the body of candidate*, we need to create a clone of `candidate` with differing type parameter identities, | ||
// so our inference results for this call doesn't pollute expression types referencing the outer type parameter! | ||
const paramLocation = candidate.typeParameters[0].symbol.declarations?.[0]?.parent; | ||
const candidateParameterContext = paramLocation || (candidate.declaration && isConstructorDeclaration(candidate.declaration) ? candidate.declaration.parent : candidate.declaration); | ||
const paramHost = getEffectiveTypeParameterHost(candidate.typeParameters[0]); | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Do we actually use the term "host" like this elsewhere? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I guess "host" might only be appropriate in the JSDoc context but I don't have a better name for this that would cover both TS and JSDoc-based types There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I mean "context" is what the PR title and the code below uses; could technically just inline it too. But, the existing JSDoc func used the term, so it's probably okay. |
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const candidateParameterContext = paramHost || (candidate.declaration && isConstructorDeclaration(candidate.declaration) ? candidate.declaration.parent : candidate.declaration); | ||
if (candidateParameterContext && findAncestor(node, a => a === candidateParameterContext)) { | ||
candidate = getImplementationSignature(candidate); | ||
} | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,57 @@ | ||
//// [tests/cases/compiler/inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts] //// | ||
|
||
=== inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts === | ||
class S<T> { | ||
>S : Symbol(S, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 0)) | ||
>T : Symbol(T, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 8)) | ||
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set: Set<T>; | ||
>set : Symbol(S.set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 12)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>T : Symbol(T, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 8)) | ||
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constructor(set: Set<T>) { | ||
>set : Symbol(set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 3, 14)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>T : Symbol(T, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 8)) | ||
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this.set = set; | ||
>this.set : Symbol(S.set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 12)) | ||
>this : Symbol(S, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 0)) | ||
>set : Symbol(S.set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 12)) | ||
>set : Symbol(set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 3, 14)) | ||
} | ||
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array() { | ||
>array : Symbol(S.array, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 5, 3)) | ||
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return new S(new Set([...this.set].map((item) => [item]))); | ||
>S : Symbol(S, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 0)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>[...this.set].map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>this.set : Symbol(S.set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 12)) | ||
>this : Symbol(S, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 0)) | ||
>set : Symbol(S.set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 12)) | ||
>map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>item : Symbol(item, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 8, 44)) | ||
>item : Symbol(item, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 8, 44)) | ||
} | ||
} | ||
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function sArray<T>(set: Set<T>) { | ||
>sArray : Symbol(sArray, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 10, 1)) | ||
>T : Symbol(T, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 12, 16)) | ||
>set : Symbol(set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 12, 19)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>T : Symbol(T, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 12, 16)) | ||
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return new S(new Set([...set].map((item) => [item]))); | ||
>S : Symbol(S, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 0, 0)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>[...set].map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>set : Symbol(set, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 12, 19)) | ||
>map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>item : Symbol(item, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 13, 37)) | ||
>item : Symbol(item, Decl(inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts, 13, 37)) | ||
} | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,109 @@ | ||
//// [tests/cases/compiler/inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts] //// | ||
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=== Performance Stats === | ||
Type Count: 1,000 | ||
Instantiation count: 2,500 | ||
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=== inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResult2.ts === | ||
class S<T> { | ||
>S : S<T> | ||
> : ^^^^ | ||
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set: Set<T>; | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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constructor(set: Set<T>) { | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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this.set = set; | ||
>this.set = set : Set<T> | ||
> : ^^^^^^ | ||
>this.set : Set<T> | ||
> : ^^^^^^ | ||
>this : this | ||
> : ^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
} | ||
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array() { | ||
>array : () => S<T[]> | ||
> : ^^^^^^^^^^^^ | ||
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return new S(new Set([...this.set].map((item) => [item]))); | ||
>new S(new Set([...this.set].map((item) => [item]))) : S<T[]> | ||
> : ^^^^^^ | ||
>S : typeof S | ||
> : ^^^^^^^^ | ||
>new Set([...this.set].map((item) => [item])) : Set<T[]> | ||
> : ^^^^^^^^ | ||
>Set : SetConstructor | ||
> : ^^^^^^^^^^^^^^ | ||
>[...this.set].map((item) => [item]) : T[][] | ||
> : ^^^^^ | ||
>[...this.set].map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>[...this.set] : T[] | ||
> : ^^^ | ||
>...this.set : T | ||
> : ^ | ||
>this.set : Set<T> | ||
> : ^^^^^^ | ||
>this : this | ||
> : ^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>(item) => [item] : (item: T) => T[] | ||
> : ^ ^^^^^^^^^^^ | ||
>item : T | ||
> : ^ | ||
>[item] : T[] | ||
> : ^^^ | ||
>item : T | ||
> : ^ | ||
} | ||
} | ||
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function sArray<T>(set: Set<T>) { | ||
>sArray : <T>(set: Set<T>) => S<T[]> | ||
> : ^ ^^ ^^ ^^^^^^^^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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return new S(new Set([...set].map((item) => [item]))); | ||
>new S(new Set([...set].map((item) => [item]))) : S<T[]> | ||
> : ^^^^^^ | ||
>S : typeof S | ||
> : ^^^^^^^^ | ||
>new Set([...set].map((item) => [item])) : Set<T[]> | ||
> : ^^^^^^^^ | ||
>Set : SetConstructor | ||
> : ^^^^^^^^^^^^^^ | ||
>[...set].map((item) => [item]) : T[][] | ||
> : ^^^^^ | ||
>[...set].map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>[...set] : T[] | ||
> : ^^^ | ||
>...set : T | ||
> : ^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>(item) => [item] : (item: T) => T[] | ||
> : ^ ^^^^^^^^^^^ | ||
>item : T | ||
> : ^ | ||
>[item] : T[] | ||
> : ^^^ | ||
>item : T | ||
> : ^ | ||
} | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,65 @@ | ||
//// [tests/cases/compiler/inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResultJsDoc1.ts] //// | ||
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=== index.js === | ||
// https://github.com/microsoft/TypeScript/issues/60988 | ||
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/** | ||
* @template [T = any] | ||
*/ | ||
class S { | ||
>S : Symbol(S, Decl(index.js, 0, 0)) | ||
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/** | ||
* @type {Set<T>} | ||
*/ | ||
set; | ||
>set : Symbol(S.set, Decl(index.js, 5, 9)) | ||
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/** | ||
* @param {Set<T>} set | ||
*/ | ||
constructor(set) { | ||
>set : Symbol(set, Decl(index.js, 15, 13)) | ||
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this.set = set; | ||
>this.set : Symbol(S.set, Decl(index.js, 5, 9)) | ||
>this : Symbol(S, Decl(index.js, 0, 0)) | ||
>set : Symbol(S.set, Decl(index.js, 5, 9)) | ||
>set : Symbol(set, Decl(index.js, 15, 13)) | ||
} | ||
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array() { | ||
>array : Symbol(S.array, Decl(index.js, 17, 2)) | ||
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return new S(new Set([...this.set].map(item => [item]))); | ||
>S : Symbol(S, Decl(index.js, 0, 0)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>[...this.set].map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>this.set : Symbol(S.set, Decl(index.js, 5, 9)) | ||
>this : Symbol(S, Decl(index.js, 0, 0)) | ||
>set : Symbol(S.set, Decl(index.js, 5, 9)) | ||
>map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>item : Symbol(item, Decl(index.js, 20, 41)) | ||
>item : Symbol(item, Decl(index.js, 20, 41)) | ||
} | ||
} | ||
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/** | ||
* @template [T = any] | ||
* @param {Set<T>} set | ||
*/ | ||
const sArray = (set) => { | ||
>sArray : Symbol(sArray, Decl(index.js, 28, 5)) | ||
>set : Symbol(set, Decl(index.js, 28, 16)) | ||
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return new S(new Set([...set].map(item => [item]))); | ||
>S : Symbol(S, Decl(index.js, 0, 0)) | ||
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.esnext.collection.d.ts, --, --)) | ||
>[...set].map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>set : Symbol(set, Decl(index.js, 28, 16)) | ||
>map : Symbol(Array.map, Decl(lib.es5.d.ts, --, --)) | ||
>item : Symbol(item, Decl(index.js, 29, 35)) | ||
>item : Symbol(item, Decl(index.js, 29, 35)) | ||
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}; | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,127 @@ | ||
//// [tests/cases/compiler/inferenceOuterResultNotIncorrectlyInstantiatedWithInnerResultJsDoc1.ts] //// | ||
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=== Performance Stats === | ||
Type Count: 1,000 | ||
Instantiation count: 2,500 | ||
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=== index.js === | ||
// https://github.com/microsoft/TypeScript/issues/60988 | ||
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/** | ||
* @template [T = any] | ||
*/ | ||
class S { | ||
>S : S<T> | ||
> : ^^^^ | ||
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/** | ||
* @type {Set<T>} | ||
*/ | ||
set; | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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/** | ||
* @param {Set<T>} set | ||
*/ | ||
constructor(set) { | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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this.set = set; | ||
>this.set = set : Set<T> | ||
> : ^^^^^^ | ||
>this.set : Set<T> | ||
> : ^^^^^^ | ||
>this : this | ||
> : ^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
} | ||
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array() { | ||
>array : () => S<T[]> | ||
> : ^^^^^^^^^^^^ | ||
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return new S(new Set([...this.set].map(item => [item]))); | ||
>new S(new Set([...this.set].map(item => [item]))) : S<T[]> | ||
> : ^^^^^^ | ||
>S : typeof S | ||
> : ^^^^^^^^ | ||
>new Set([...this.set].map(item => [item])) : Set<T[]> | ||
> : ^^^^^^^^ | ||
>Set : SetConstructor | ||
> : ^^^^^^^^^^^^^^ | ||
>[...this.set].map(item => [item]) : T[][] | ||
> : ^^^^^ | ||
>[...this.set].map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>[...this.set] : T[] | ||
> : ^^^ | ||
>...this.set : T | ||
> : ^ | ||
>this.set : Set<T> | ||
> : ^^^^^^ | ||
>this : this | ||
> : ^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>item => [item] : (item: T) => T[] | ||
> : ^ ^^^^^^^^^^^ | ||
>item : T | ||
> : ^ | ||
>[item] : T[] | ||
> : ^^^ | ||
>item : T | ||
> : ^ | ||
} | ||
} | ||
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/** | ||
* @template [T = any] | ||
* @param {Set<T>} set | ||
*/ | ||
const sArray = (set) => { | ||
>sArray : <T = any>(set: Set<T>) => S<T[]> | ||
> : ^ ^^^^^^^^ ^^ ^^^^^^^^^^^ | ||
>(set) => { return new S(new Set([...set].map(item => [item])));} : <T = any>(set: Set<T>) => S<T[]> | ||
> : ^ ^^^^^^^^ ^^ ^^^^^^^^^^^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
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return new S(new Set([...set].map(item => [item]))); | ||
>new S(new Set([...set].map(item => [item]))) : S<T[]> | ||
> : ^^^^^^ | ||
>S : typeof S | ||
> : ^^^^^^^^ | ||
>new Set([...set].map(item => [item])) : Set<T[]> | ||
> : ^^^^^^^^ | ||
>Set : SetConstructor | ||
> : ^^^^^^^^^^^^^^ | ||
>[...set].map(item => [item]) : T[][] | ||
> : ^^^^^ | ||
>[...set].map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>[...set] : T[] | ||
> : ^^^ | ||
>...set : T | ||
> : ^ | ||
>set : Set<T> | ||
> : ^^^^^^ | ||
>map : <U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[] | ||
> : ^ ^^ ^^^ ^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^^ ^^^^^^^^ | ||
>item => [item] : (item: T) => T[] | ||
> : ^ ^^^^^^^^^^^ | ||
>item : T | ||
> : ^ | ||
>[item] : T[] | ||
> : ^^^ | ||
>item : T | ||
> : ^ | ||
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}; | ||
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This sort of makes me wonder when we really should be using
getEffectiveJSDocHost
where we are currently usinggetEffectiveContainerForJSDocTemplateTag
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Right, but to be fair - I had to use
getEffectiveJSDocHost
to fix this issue at hand and it didn't look to me like this older function would have to stick to the other one. There is a chance that it should not use this - but there is also a chance that this change fixed some other issue ;pIn the ideal world, I'd go through all of the callers to both and assess their needs but I just don't have time to do that right now 😢