0e905be42b
* Switch index signature storage to 'indexInfos: IndexInfo[]' property * Accept new baselines * Remove another usage of IndexKind enum * Update getIndexedAccessType and resolveMappedTypeMembers * Accept new baselines * Update grammar checking for index signatures * Accept new baselines * Consider all index signatures in mapped types and union types * Accept new baselines * Update getIndexType * Accept new baselines * Intersect multiple applicable index signatures * Use getApplicableIndexInfo instead of hardwired string/number handling * Update index signature relationship checking * Report type for which index signature is missing * Report type for which index signature is missing * Accept new baselines * Make 'number' index signatures consistently apply to numeric strings * Accept new baselines * Update fourslash test * Revise index constraint checking * Accept new baselines * Update error messages * Accept new baselines * Update type inference from index signatures * Update isKnownProperty * Update contextual typing based on index signatures * Accept new baselines * Support union types in index signature declarations * Accept new baselines * Check duplicate index signatures / remove redundant template literals from unions with string * Accept new baselines * Include key type in diagnostic / check symbol-named properties * Accept new baselines * Minor fix * Add tests * Accept new baselines * Add optimized findApplicableIndexInfoForName * Accept new baselines * Another place we don't need to obtain literal type for property name * Accept new baselines * Don't create literal types that are going to be discarded * Individual maps for string, number, bigint, and enum literal types * Remove ineffective optimizations * Accept new baselines * Permit intersections as key types in index signatures * Index expression in element access is template literal context * Add tests * Accept new baselines * Symbol index signatures from object literals with computed symbol properties * Accept new baselines * Add more tests * Accept new baselines * Implement Go To Definition for all applicable index signatures * Add fourslash test * Accept new API baselines
32 lines
1.8 KiB
Plaintext
32 lines
1.8 KiB
Plaintext
tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts(18,5): error TS2403: Subsequent variable declarations must have the same type. Variable 'v1' must be of type 'Function[]', but here has type 'unknown[]'.
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tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts(18,27): error TS2345: Argument of type 'NumberMap<Function>' is not assignable to parameter of type 'StringMap<unknown>'.
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Index signature for type 'string' is missing in type 'NumberMap<Function>'.
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==== tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts (2 errors) ====
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interface NumberMap<T> {
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[index: number]: T;
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}
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interface StringMap<T> {
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[index: string]: T;
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}
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declare function numberMapToArray<T>(object: NumberMap<T>): T[];
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declare function stringMapToArray<T>(object: StringMap<T>): T[];
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var numberMap: NumberMap<Function>;
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var stringMap: StringMap<Function>;
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var v1: Function[];
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var v1 = numberMapToArray(numberMap); // Ok
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var v1 = numberMapToArray(stringMap); // Ok
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var v1 = stringMapToArray(numberMap); // Error expected here
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~~
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!!! error TS2403: Subsequent variable declarations must have the same type. Variable 'v1' must be of type 'Function[]', but here has type 'unknown[]'.
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!!! related TS6203 tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts:15:5: 'v1' was also declared here.
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~~~~~~~~~
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!!! error TS2345: Argument of type 'NumberMap<Function>' is not assignable to parameter of type 'StringMap<unknown>'.
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!!! error TS2345: Index signature for type 'string' is missing in type 'NumberMap<Function>'.
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var v1 = stringMapToArray(stringMap); // Ok
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