Tests for union of index signatures:
• If each type in U has a string index signature, U has a string index signature of a union type of the types of the string index signatures from each type in U. • If each type in U has a numeric index signature, U has a numeric index signature of a union type of the types of the numeric index signatures from each type in U.
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tests/baselines/reference/unionTypeIndexSignature.js
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tests/baselines/reference/unionTypeIndexSignature.js
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//// [unionTypeIndexSignature.ts]
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var numOrDate: number | Date;
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var anyVar: number;
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// If each type in U has a string index signature,
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// U has a string index signature of a union type of the types of the string index signatures from each type in U.
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var unionOfDifferentReturnType: { [a: string]: number; } | { [a: string]: Date; };
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numOrDate = unionOfDifferentReturnType["hello"]; // number | Date
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numOrDate = unionOfDifferentReturnType[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature: { [a: string]: number; } | boolean;
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anyVar = unionOfTypesWithAndWithoutStringSignature["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature[10]; // any
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// If each type in U has a numeric index signature,
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// U has a numeric index signature of a union type of the types of the numeric index signatures from each type in U.
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var unionOfDifferentReturnType1: { [a: number]: number; } | { [a: number]: Date; };
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numOrDate = unionOfDifferentReturnType1["hello"]; // any
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numOrDate = unionOfDifferentReturnType1[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature1: { [a: number]: number; } | boolean;
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anyVar = unionOfTypesWithAndWithoutStringSignature1["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature1[10]; // any
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//// [unionTypeIndexSignature.js]
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var numOrDate;
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var anyVar;
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// If each type in U has a string index signature,
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// U has a string index signature of a union type of the types of the string index signatures from each type in U.
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var unionOfDifferentReturnType;
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numOrDate = unionOfDifferentReturnType["hello"]; // number | Date
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numOrDate = unionOfDifferentReturnType[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature;
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anyVar = unionOfTypesWithAndWithoutStringSignature["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature[10]; // any
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// If each type in U has a numeric index signature,
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// U has a numeric index signature of a union type of the types of the numeric index signatures from each type in U.
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var unionOfDifferentReturnType1;
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numOrDate = unionOfDifferentReturnType1["hello"]; // any
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numOrDate = unionOfDifferentReturnType1[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature1;
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anyVar = unionOfTypesWithAndWithoutStringSignature1["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature1[10]; // any
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81
tests/baselines/reference/unionTypeIndexSignature.types
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81
tests/baselines/reference/unionTypeIndexSignature.types
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=== tests/cases/conformance/types/union/unionTypeIndexSignature.ts ===
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var numOrDate: number | Date;
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>numOrDate : number | Date
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>Date : Date
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var anyVar: number;
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>anyVar : number
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// If each type in U has a string index signature,
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// U has a string index signature of a union type of the types of the string index signatures from each type in U.
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var unionOfDifferentReturnType: { [a: string]: number; } | { [a: string]: Date; };
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>unionOfDifferentReturnType : { [x: string]: number; } | { [x: string]: Date; }
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>a : string
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>a : string
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>Date : Date
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numOrDate = unionOfDifferentReturnType["hello"]; // number | Date
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>numOrDate = unionOfDifferentReturnType["hello"] : number | Date
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>numOrDate : number | Date
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>unionOfDifferentReturnType["hello"] : number | Date
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>unionOfDifferentReturnType : { [x: string]: number; } | { [x: string]: Date; }
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numOrDate = unionOfDifferentReturnType[10]; // number | Date
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>numOrDate = unionOfDifferentReturnType[10] : number | Date
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>numOrDate : number | Date
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>unionOfDifferentReturnType[10] : number | Date
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>unionOfDifferentReturnType : { [x: string]: number; } | { [x: string]: Date; }
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var unionOfTypesWithAndWithoutStringSignature: { [a: string]: number; } | boolean;
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>unionOfTypesWithAndWithoutStringSignature : boolean | { [x: string]: number; }
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>a : string
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anyVar = unionOfTypesWithAndWithoutStringSignature["hello"]; // any
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>anyVar = unionOfTypesWithAndWithoutStringSignature["hello"] : any
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>anyVar : number
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>unionOfTypesWithAndWithoutStringSignature["hello"] : any
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>unionOfTypesWithAndWithoutStringSignature : boolean | { [x: string]: number; }
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anyVar = unionOfTypesWithAndWithoutStringSignature[10]; // any
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>anyVar = unionOfTypesWithAndWithoutStringSignature[10] : any
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>anyVar : number
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>unionOfTypesWithAndWithoutStringSignature[10] : any
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>unionOfTypesWithAndWithoutStringSignature : boolean | { [x: string]: number; }
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// If each type in U has a numeric index signature,
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// U has a numeric index signature of a union type of the types of the numeric index signatures from each type in U.
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var unionOfDifferentReturnType1: { [a: number]: number; } | { [a: number]: Date; };
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>unionOfDifferentReturnType1 : { [x: number]: number; } | { [x: number]: Date; }
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>a : number
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>a : number
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>Date : Date
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numOrDate = unionOfDifferentReturnType1["hello"]; // any
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>numOrDate = unionOfDifferentReturnType1["hello"] : any
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>numOrDate : number | Date
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>unionOfDifferentReturnType1["hello"] : any
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>unionOfDifferentReturnType1 : { [x: number]: number; } | { [x: number]: Date; }
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numOrDate = unionOfDifferentReturnType1[10]; // number | Date
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>numOrDate = unionOfDifferentReturnType1[10] : number | Date
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>numOrDate : number | Date
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>unionOfDifferentReturnType1[10] : number | Date
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>unionOfDifferentReturnType1 : { [x: number]: number; } | { [x: number]: Date; }
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var unionOfTypesWithAndWithoutStringSignature1: { [a: number]: number; } | boolean;
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>unionOfTypesWithAndWithoutStringSignature1 : boolean | { [x: number]: number; }
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>a : number
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anyVar = unionOfTypesWithAndWithoutStringSignature1["hello"]; // any
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>anyVar = unionOfTypesWithAndWithoutStringSignature1["hello"] : any
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>anyVar : number
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>unionOfTypesWithAndWithoutStringSignature1["hello"] : any
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>unionOfTypesWithAndWithoutStringSignature1 : boolean | { [x: number]: number; }
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anyVar = unionOfTypesWithAndWithoutStringSignature1[10]; // any
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>anyVar = unionOfTypesWithAndWithoutStringSignature1[10] : any
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>anyVar : number
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>unionOfTypesWithAndWithoutStringSignature1[10] : any
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>unionOfTypesWithAndWithoutStringSignature1 : boolean | { [x: number]: number; }
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@ -0,0 +1,23 @@
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var numOrDate: number | Date;
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var anyVar: number;
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// If each type in U has a string index signature,
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// U has a string index signature of a union type of the types of the string index signatures from each type in U.
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var unionOfDifferentReturnType: { [a: string]: number; } | { [a: string]: Date; };
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numOrDate = unionOfDifferentReturnType["hello"]; // number | Date
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numOrDate = unionOfDifferentReturnType[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature: { [a: string]: number; } | boolean;
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anyVar = unionOfTypesWithAndWithoutStringSignature["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature[10]; // any
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// If each type in U has a numeric index signature,
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// U has a numeric index signature of a union type of the types of the numeric index signatures from each type in U.
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var unionOfDifferentReturnType1: { [a: number]: number; } | { [a: number]: Date; };
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numOrDate = unionOfDifferentReturnType1["hello"]; // any
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numOrDate = unionOfDifferentReturnType1[10]; // number | Date
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var unionOfTypesWithAndWithoutStringSignature1: { [a: number]: number; } | boolean;
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anyVar = unionOfTypesWithAndWithoutStringSignature1["hello"]; // any
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anyVar = unionOfTypesWithAndWithoutStringSignature1[10]; // any
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