21 lines
900 B
JavaScript
21 lines
900 B
JavaScript
// You should be able to use a function as an object with a call property
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var a: { (x: number): string } = function (x: number): string { return "hi"; };
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// ...and it should notice when the return type is wrong
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var b: { (x: number): number } = function (x: number): string { return "hi"; };
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// ...or if the param type is wrong
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var c: { (x: string): string } = function (x: number): string { return "hi"; };
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// ...or if the arity is wrong
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var d: { (): string } = function (x: number): string { return "hi"; };
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// ...but subtyping rules still apply
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var e: { (x: any): void } = function() { } // arity
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var f: { (): mixed } = function(): string { return "hi" } // return type
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var g: { (x: string): void } = function(x: mixed) { } // param type
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// A function can be an object
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var y : {} = function (x: number): string { return "hi"; };
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var z : Object = function (x: number): string { return "hi"; };
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