13 lines
246 B
JavaScript
13 lines
246 B
JavaScript
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/* @flow */
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interface HasOptional {
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a: string,
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b?: number,
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};
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var test1: HasOptional = { a: "hello" }
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var test2: HasOptional = {}; // Error: missing property a
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var test3: HasOptional = { a: "hello", b: true }; // Error: boolean ~> number
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