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=== tests/cases/compiler/indexSignaturesInferentialTyping.ts ===
function foo<T>(items: { [index: number]: T }): T { return undefined; }
>foo : Symbol(foo, Decl(indexSignaturesInferentialTyping.ts, 0, 0))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 0, 13))
>items : Symbol(items, Decl(indexSignaturesInferentialTyping.ts, 0, 16))
>index : Symbol(index, Decl(indexSignaturesInferentialTyping.ts, 0, 26))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 0, 13))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 0, 13))
>undefined : Symbol(undefined)
function bar<T>(items: { [index: string]: T }): T { return undefined; }
>bar : Symbol(bar, Decl(indexSignaturesInferentialTyping.ts, 0, 71))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 1, 13))
>items : Symbol(items, Decl(indexSignaturesInferentialTyping.ts, 1, 16))
>index : Symbol(index, Decl(indexSignaturesInferentialTyping.ts, 1, 26))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 1, 13))
>T : Symbol(T, Decl(indexSignaturesInferentialTyping.ts, 1, 13))
>undefined : Symbol(undefined)
var x1 = foo({ 0: 0, 1: 1 }); // type should be number
>x1 : Symbol(x1, Decl(indexSignaturesInferentialTyping.ts, 3, 3))
>foo : Symbol(foo, Decl(indexSignaturesInferentialTyping.ts, 0, 0))
var x2 = bar({ 0: 0, 1: 1 });
>x2 : Symbol(x2, Decl(indexSignaturesInferentialTyping.ts, 4, 3))
>bar : Symbol(bar, Decl(indexSignaturesInferentialTyping.ts, 0, 71))
var x3 = bar({ zero: 0, one: 1 }); // type should be number
>x3 : Symbol(x3, Decl(indexSignaturesInferentialTyping.ts, 5, 3))
>bar : Symbol(bar, Decl(indexSignaturesInferentialTyping.ts, 0, 71))
>zero : Symbol(zero, Decl(indexSignaturesInferentialTyping.ts, 5, 14))
>one : Symbol(one, Decl(indexSignaturesInferentialTyping.ts, 5, 23))
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