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14 lines
244 B
JavaScript
14 lines
244 B
JavaScript
/* @flow */
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function foo(x?: number, ...y: Array<string>): [?number, Array<string>] {
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return [x, y];
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}
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foo(); // OK
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foo(123), // OK
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foo(123, 'hello'); // OK
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foo(true); // ERROR boolean ~> number
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foo(123, true); // ERROR boolean ~> string
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