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Add NoInfer<T> intrinsic represented as special substitution type #56794

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Merged
ahejlsberg merged 10 commits into from
Jan 12, 2024
Merged

Add NoInfer<T> intrinsic represented as special substitution type #56794

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ba7f084
Add NoInfer<T> intrinsic represented as special substitution type
ahejlsberg Dec 15, 2023
411205e
Update tests
ahejlsberg Dec 15, 2023
b25bf3e
Add tests
ahejlsberg Dec 15, 2023
9438168
Erase NoInfer<T> in index types
ahejlsberg Dec 18, 2023
e492451
Add tests
ahejlsberg Dec 18, 2023
63b6713
keyof NoInfer<T> ==> NoInfer<keyof T> / globalThis emit when needed
ahejlsberg Dec 20, 2023
14b90c2
Simplify keyof NoInfer<T> ==> NoInfer<keyof T> transformation
ahejlsberg Dec 20, 2023
2fc975a
Update tests
ahejlsberg Dec 20, 2023
af2aae4
Merge branch 'main' into fix14829
ahejlsberg Jan 9, 2024
79f8513
Add test for redeclaration of NoInfer<T>
ahejlsberg Jan 9, 2024
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Update tests
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@ahejlsberg
ahejlsberg committed Dec 20, 2023
commit 2fc975ac4a401e84cbfc715bdbe4c9cefd7dea97
2 changes: 1 addition & 1 deletion tests/baselines/reference/noInfer.errors.txt
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Expand Up @@ -34,7 +34,7 @@ noInfer.ts(66,14): error TS2345: Argument of type '{}' is not assignable to para
type T21<T> = NoInfer<NoInfer<T> & string>;
type T22<T> = NoInfer<NoInfer<T> & string[]>;

// NoInfer<T> is erased in index types and mapped types
// keyof NoInfer<T> is transformed into NoInfer<keyof T>

type T30 = keyof NoInfer<{ a: string, b: string }>;
type T31<T> = keyof NoInfer<T>;
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2 changes: 1 addition & 1 deletion tests/baselines/reference/noInfer.js
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Expand Up @@ -22,7 +22,7 @@ type T20<T> = NoInfer<NoInfer<T>>;
type T21<T> = NoInfer<NoInfer<T> & string>;
type T22<T> = NoInfer<NoInfer<T> & string[]>;

// NoInfer<T> is erased in index types and mapped types
// keyof NoInfer<T> is transformed into NoInfer<keyof T>

type T30 = keyof NoInfer<{ a: string, b: string }>;
type T31<T> = keyof NoInfer<T>;
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2 changes: 1 addition & 1 deletion tests/baselines/reference/noInfer.symbols
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Expand Up @@ -65,7 +65,7 @@ type T22<T> = NoInfer<NoInfer<T> & string[]>;
>NoInfer : Symbol(NoInfer, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(noInfer.ts, 19, 9))

// NoInfer<T> is erased in index types and mapped types
// keyof NoInfer<T> is transformed into NoInfer<keyof T>

type T30 = keyof NoInfer<{ a: string, b: string }>;
>T30 : Symbol(T30, Decl(noInfer.ts, 19, 45))
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4 changes: 2 additions & 2 deletions tests/baselines/reference/noInfer.types
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Expand Up @@ -44,15 +44,15 @@ type T21<T> = NoInfer<NoInfer<T> & string>;
type T22<T> = NoInfer<NoInfer<T> & string[]>;
>T22 : NoInfer<NoInfer<T> & string[]>

// NoInfer<T> is erased in index types and mapped types
// keyof NoInfer<T> is transformed into NoInfer<keyof T>

type T30 = keyof NoInfer<{ a: string, b: string }>;
>T30 : "a" | "b"
>a : string
>b : string

type T31<T> = keyof NoInfer<T>;
>T31 : keyof T
>T31 : NoInfer<keyof T>

type T32 = { [K in keyof NoInfer<{ a: string, b: string }>]: K };
>T32 : { a: "a"; b: "b"; }
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2 changes: 1 addition & 1 deletion tests/cases/conformance/types/typeRelationships/typeInference/noInfer.ts
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Expand Up @@ -22,7 +22,7 @@ type T20<T> = NoInfer<NoInfer<T>>;
type T21<T> = NoInfer<NoInfer<T> & string>;
type T22<T> = NoInfer<NoInfer<T> & string[]>;

// NoInfer<T> is erased in index types and mapped types
// keyof NoInfer<T> is transformed into NoInfer<keyof T>

type T30 = keyof NoInfer<{ a: string, b: string }>;
type T31<T> = keyof NoInfer<T>;
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