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Improve apparent type of mapped types (#57122)
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30 changes: 30 additions & 0 deletions
30
tests/baselines/reference/assignmentToAnyArrayRestParameters.errors.txt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| assignmentToAnyArrayRestParameters.ts(15,25): error TS2339: Property '0.0' does not exist on type 'string[]'. | ||
| assignmentToAnyArrayRestParameters.ts(18,16): error TS2536: Type '"0.0"' cannot be used to index type 'T'. | ||
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| ==== assignmentToAnyArrayRestParameters.ts (2 errors) ==== | ||
| // Repros from #57122 | ||
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| function foo<T extends string[]>( | ||
| fa: (s: string, ...args: string[]) => string, | ||
| fb: (s: string, ...args: T) => string | ||
| ) { | ||
| const f1: (...args: any) => string = fa; | ||
| const f2: (...args: any[]) => string = fa; | ||
| const f3: (...args: any) => string = fb; | ||
| const f4: (...args: any[]) => string = fb; | ||
| } | ||
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| function bar<T extends string[], K extends number>() { | ||
| type T00 = string[]["0"]; | ||
| type T01 = string[]["0.0"]; // Error | ||
| ~~~~~ | ||
| !!! error TS2339: Property '0.0' does not exist on type 'string[]'. | ||
| type T02 = string[][K | "0"]; | ||
| type T10 = T["0"]; | ||
| type T11 = T["0.0"]; // Error | ||
| ~~~~~~~~ | ||
| !!! error TS2536: Type '"0.0"' cannot be used to index type 'T'. | ||
| type T12 = T[K | "0"]; | ||
| } | ||
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tests/baselines/reference/assignmentToAnyArrayRestParameters.symbols
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| //// [tests/cases/compiler/assignmentToAnyArrayRestParameters.ts] //// | ||
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| === assignmentToAnyArrayRestParameters.ts === | ||
| // Repros from #57122 | ||
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| function foo<T extends string[]>( | ||
| >foo : Symbol(foo, Decl(assignmentToAnyArrayRestParameters.ts, 0, 0)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 2, 13)) | ||
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| fa: (s: string, ...args: string[]) => string, | ||
| >fa : Symbol(fa, Decl(assignmentToAnyArrayRestParameters.ts, 2, 33)) | ||
| >s : Symbol(s, Decl(assignmentToAnyArrayRestParameters.ts, 3, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 3, 19)) | ||
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| fb: (s: string, ...args: T) => string | ||
| >fb : Symbol(fb, Decl(assignmentToAnyArrayRestParameters.ts, 3, 49)) | ||
| >s : Symbol(s, Decl(assignmentToAnyArrayRestParameters.ts, 4, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 4, 19)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 2, 13)) | ||
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| ) { | ||
| const f1: (...args: any) => string = fa; | ||
| >f1 : Symbol(f1, Decl(assignmentToAnyArrayRestParameters.ts, 6, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 6, 15)) | ||
| >fa : Symbol(fa, Decl(assignmentToAnyArrayRestParameters.ts, 2, 33)) | ||
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| const f2: (...args: any[]) => string = fa; | ||
| >f2 : Symbol(f2, Decl(assignmentToAnyArrayRestParameters.ts, 7, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 7, 15)) | ||
| >fa : Symbol(fa, Decl(assignmentToAnyArrayRestParameters.ts, 2, 33)) | ||
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| const f3: (...args: any) => string = fb; | ||
| >f3 : Symbol(f3, Decl(assignmentToAnyArrayRestParameters.ts, 8, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 8, 15)) | ||
| >fb : Symbol(fb, Decl(assignmentToAnyArrayRestParameters.ts, 3, 49)) | ||
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| const f4: (...args: any[]) => string = fb; | ||
| >f4 : Symbol(f4, Decl(assignmentToAnyArrayRestParameters.ts, 9, 9)) | ||
| >args : Symbol(args, Decl(assignmentToAnyArrayRestParameters.ts, 9, 15)) | ||
| >fb : Symbol(fb, Decl(assignmentToAnyArrayRestParameters.ts, 3, 49)) | ||
| } | ||
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| function bar<T extends string[], K extends number>() { | ||
| >bar : Symbol(bar, Decl(assignmentToAnyArrayRestParameters.ts, 10, 1)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 12, 13)) | ||
| >K : Symbol(K, Decl(assignmentToAnyArrayRestParameters.ts, 12, 32)) | ||
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| type T00 = string[]["0"]; | ||
| >T00 : Symbol(T00, Decl(assignmentToAnyArrayRestParameters.ts, 12, 54)) | ||
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| type T01 = string[]["0.0"]; // Error | ||
| >T01 : Symbol(T01, Decl(assignmentToAnyArrayRestParameters.ts, 13, 29)) | ||
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| type T02 = string[][K | "0"]; | ||
| >T02 : Symbol(T02, Decl(assignmentToAnyArrayRestParameters.ts, 14, 31)) | ||
| >K : Symbol(K, Decl(assignmentToAnyArrayRestParameters.ts, 12, 32)) | ||
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| type T10 = T["0"]; | ||
| >T10 : Symbol(T10, Decl(assignmentToAnyArrayRestParameters.ts, 15, 33)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 12, 13)) | ||
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| type T11 = T["0.0"]; // Error | ||
| >T11 : Symbol(T11, Decl(assignmentToAnyArrayRestParameters.ts, 16, 22)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 12, 13)) | ||
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| type T12 = T[K | "0"]; | ||
| >T12 : Symbol(T12, Decl(assignmentToAnyArrayRestParameters.ts, 17, 24)) | ||
| >T : Symbol(T, Decl(assignmentToAnyArrayRestParameters.ts, 12, 13)) | ||
| >K : Symbol(K, Decl(assignmentToAnyArrayRestParameters.ts, 12, 32)) | ||
| } | ||
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62 changes: 62 additions & 0 deletions
62
tests/baselines/reference/assignmentToAnyArrayRestParameters.types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| //// [tests/cases/compiler/assignmentToAnyArrayRestParameters.ts] //// | ||
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| === assignmentToAnyArrayRestParameters.ts === | ||
| // Repros from #57122 | ||
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| function foo<T extends string[]>( | ||
| >foo : <T extends string[]>(fa: (s: string, ...args: string[]) => string, fb: (s: string, ...args: T) => string) => void | ||
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| fa: (s: string, ...args: string[]) => string, | ||
| >fa : (s: string, ...args: string[]) => string | ||
| >s : string | ||
| >args : string[] | ||
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| fb: (s: string, ...args: T) => string | ||
| >fb : (s: string, ...args: T) => string | ||
| >s : string | ||
| >args : T | ||
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| ) { | ||
| const f1: (...args: any) => string = fa; | ||
| >f1 : (...args: any) => string | ||
| >args : any | ||
| >fa : (s: string, ...args: string[]) => string | ||
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| const f2: (...args: any[]) => string = fa; | ||
| >f2 : (...args: any[]) => string | ||
| >args : any[] | ||
| >fa : (s: string, ...args: string[]) => string | ||
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| const f3: (...args: any) => string = fb; | ||
| >f3 : (...args: any) => string | ||
| >args : any | ||
| >fb : (s: string, ...args: T) => string | ||
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| const f4: (...args: any[]) => string = fb; | ||
| >f4 : (...args: any[]) => string | ||
| >args : any[] | ||
| >fb : (s: string, ...args: T) => string | ||
| } | ||
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| function bar<T extends string[], K extends number>() { | ||
| >bar : <T extends string[], K extends number>() => void | ||
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| type T00 = string[]["0"]; | ||
| >T00 : string | ||
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| type T01 = string[]["0.0"]; // Error | ||
| >T01 : any | ||
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| type T02 = string[][K | "0"]; | ||
| >T02 : string[][K | "0"] | ||
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| type T10 = T["0"]; | ||
| >T10 : T["0"] | ||
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| type T11 = T["0.0"]; // Error | ||
| >T11 : T["0.0"] | ||
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| type T12 = T[K | "0"]; | ||
| >T12 : T[K | "0"] | ||
| } | ||
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93 changes: 93 additions & 0 deletions
93
...selines/reference/homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.symbols
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,93 @@ | ||
| //// [tests/cases/compiler/homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts] //// | ||
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| === homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts === | ||
| type HandleOptions<O> = { | ||
| >HandleOptions : Symbol(HandleOptions, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 0, 0)) | ||
| >O : Symbol(O, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 0, 19)) | ||
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| [I in keyof O]: { | ||
| >I : Symbol(I, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 1, 5)) | ||
| >O : Symbol(O, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 0, 19)) | ||
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| value: O[I]; | ||
| >value : Symbol(value, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 1, 21)) | ||
| >O : Symbol(O, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 0, 19)) | ||
| >I : Symbol(I, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 1, 5)) | ||
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| }; | ||
| }; | ||
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| declare function func1< | ||
| >func1 : Symbol(func1, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 4, 2)) | ||
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| T extends Record<PropertyKey, readonly any[]>, | ||
| >T : Symbol(T, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 6, 23)) | ||
| >Record : Symbol(Record, Decl(lib.es5.d.ts, --, --)) | ||
| >PropertyKey : Symbol(PropertyKey, Decl(lib.es5.d.ts, --, --)) | ||
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| >(fields: { | ||
| >fields : Symbol(fields, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 8, 2)) | ||
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| [K in keyof T]: { | ||
| >K : Symbol(K, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 9, 5)) | ||
| >T : Symbol(T, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 6, 23)) | ||
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| label: string; | ||
| >label : Symbol(label, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 9, 21)) | ||
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| options: [...HandleOptions<T[K]>]; | ||
| >options : Symbol(options, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 10, 22)) | ||
| >HandleOptions : Symbol(HandleOptions, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 0, 0)) | ||
| >T : Symbol(T, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 6, 23)) | ||
| >K : Symbol(K, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 9, 5)) | ||
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| }; | ||
| }): T; | ||
| >T : Symbol(T, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 6, 23)) | ||
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| const result = func1({ | ||
| >result : Symbol(result, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 15, 5)) | ||
| >func1 : Symbol(func1, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 4, 2)) | ||
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| prop: { | ||
| >prop : Symbol(prop, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 15, 22)) | ||
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| label: "first", | ||
| >label : Symbol(label, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 16, 11)) | ||
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| options: [ | ||
| >options : Symbol(options, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 17, 23)) | ||
| { | ||
| value: 123, | ||
| >value : Symbol(value, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 19, 13)) | ||
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| }, | ||
| { | ||
| value: "foo", | ||
| >value : Symbol(value, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 22, 13)) | ||
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| }, | ||
| ], | ||
| }, | ||
| other: { | ||
| >other : Symbol(other, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 26, 6)) | ||
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| label: "second", | ||
| >label : Symbol(label, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 27, 12)) | ||
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| options: [ | ||
| >options : Symbol(options, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 28, 24)) | ||
| { | ||
| value: "bar", | ||
| >value : Symbol(value, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 30, 13)) | ||
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| }, | ||
| { | ||
| value: true, | ||
| >value : Symbol(value, Decl(homomorphicMappedTypeWithNonHomomorphicInstantiationSpreadable1.ts, 33, 13)) | ||
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| }, | ||
| ], | ||
| }, | ||
| }); | ||
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