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Function#bind/call/apply doesn't return or have same signatures #8129

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#8354
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Function#bind/call/apply doesn't return or have same signatures#8129
#8354
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sandersn
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BugA bug in TypeScript
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TypeScript 2.0

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@falsandtru
falsandtru
opened on Apr 17, 2016

TypeScript Version:

master

Code

interface F {
  (): number;
  (p): string;
}
var f: F = (<F>null).bind(null);
var c: number = f.call(null);
var a: number = f.apply(null);

Expected behavior:

$ node built/local/tsc.js index.ts

Actual behavior:

$ node built/local/tsc.js index.ts
index.ts(5,5): error TS2322: Type '(this: void, ...argArray: any[]) => string' i
s not assignable to type 'F'.
  Type 'string' is not assignable to type 'number'.
index.ts(6,5): error TS2322: Type 'string' is not assignable to type 'number'.
index.ts(7,5): error TS2322: Type 'string' is not assignable to type 'number'.

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