Christopher Chedeau
3375cfe605
* new_tests * move_all_clobbered_tests * remove all the tests that no longer exist * re-run flow tests * Move all the flow tests to tests/flow and prettier to tests/ * Move prettier tests to their own folders * Add jsfmt files * run prettier snapshot tests
22 lines
692 B
JavaScript
22 lines
692 B
JavaScript
// You should be able to use an arrow function as an object with a call property
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var a: { (x: number): string } = (x) => x.toString()
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// ...and it should notice when the return type is wrong
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var b: { (x: number): number } = (x) => "hi"
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// ...or if the param type is wrong
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var c: { (x: string): string } = (x) => x.toFixed()
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// ...or if the arity is wrong
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var d: { (): string } = (x) => "hi"
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// ...but subtyping rules still apply
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var e: { (x: any): void } = () => { } // arity
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var f: { (): mixed } = () => "hi" // return type
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var g: { (x: Date): void } = (x) => { x * 2 } // param type (date < number)
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// A function can be an object
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var y : {} = (x) => "hi"
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var z : Object = (x) => "hi"
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