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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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Add test for redeclaration of NoInfer<T>
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@ahejlsberg
ahejlsberg committed Jan 9, 2024
commit 79f851315d6bfddc5f5ef703ec7df71b4adff52f
24 changes: 24 additions & 0 deletions tests/baselines/reference/noInferRedeclaration.js
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//// [tests/cases/conformance/types/typeRelationships/typeInference/noInferRedeclaration.ts] ////

//// [a.ts]
export const f = <T>(x: T, y: NoInfer<T>) => x;

//// [b.ts]
import { f } from "./a";

type NoInfer<T> = T & number;

export const g = f;


//// [a.js]
export const f = (x, y) => x;
//// [b.js]
import { f } from "./a";
export const g = f;


//// [a.d.ts]
export declare const f: <T>(x: T, y: NoInfer<T>) => T;
//// [b.d.ts]
export declare const g: <T>(x: T, y: globalThis.NoInfer<T>) => T;
26 changes: 26 additions & 0 deletions tests/baselines/reference/noInferRedeclaration.symbols
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//// [tests/cases/conformance/types/typeRelationships/typeInference/noInferRedeclaration.ts] ////

=== a.ts ===
export const f = <T>(x: T, y: NoInfer<T>) => x;
>f : Symbol(f, Decl(a.ts, 0, 12))
>T : Symbol(T, Decl(a.ts, 0, 18))
>x : Symbol(x, Decl(a.ts, 0, 21))
>T : Symbol(T, Decl(a.ts, 0, 18))
>y : Symbol(y, Decl(a.ts, 0, 26))
>NoInfer : Symbol(NoInfer, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(a.ts, 0, 18))
>x : Symbol(x, Decl(a.ts, 0, 21))

=== b.ts ===
import { f } from "./a";
>f : Symbol(f, Decl(b.ts, 0, 8))

type NoInfer<T> = T & number;
>NoInfer : Symbol(NoInfer, Decl(b.ts, 0, 24))
>T : Symbol(T, Decl(b.ts, 2, 13))
>T : Symbol(T, Decl(b.ts, 2, 13))

export const g = f;
>g : Symbol(g, Decl(b.ts, 4, 12))
>f : Symbol(f, Decl(b.ts, 0, 8))

21 changes: 21 additions & 0 deletions tests/baselines/reference/noInferRedeclaration.types
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//// [tests/cases/conformance/types/typeRelationships/typeInference/noInferRedeclaration.ts] ////

=== a.ts ===
export const f = <T>(x: T, y: NoInfer<T>) => x;
>f : <T>(x: T, y: NoInfer<T>) => T
><T>(x: T, y: NoInfer<T>) => x : <T>(x: T, y: NoInfer<T>) => T
>x : T
>y : NoInfer<T>
>x : T

=== b.ts ===
import { f } from "./a";
>f : <T>(x: T, y: globalThis.NoInfer<T>) => T

type NoInfer<T> = T & number;
>NoInfer : NoInfer<T>

export const g = f;
>g : <T>(x: T, y: globalThis.NoInfer<T>) => T
>f : <T>(x: T, y: globalThis.NoInfer<T>) => T

13 changes: 13 additions & 0 deletions tests/cases/conformance/types/typeRelationships/typeInference/noInferRedeclaration.ts
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// @strict: true
// @declaration: true
// @target: esnext

// @filename: a.ts
export const f = <T>(x: T, y: NoInfer<T>) => x;

// @filename: b.ts
import { f } from "./a";

type NoInfer<T> = T & number;

export const g = f;