19 lines
492 B
JavaScript
19 lines
492 B
JavaScript
//// [genericFunctionsWithOptionalParameters2.ts]
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interface Utils {
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fold<T, S>(c: Array<T>, folder?: (s: S, t: T) => T, init?: S): T;
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}
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var utils: Utils;
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utils.fold(); // error
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utils.fold(null); // no error
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utils.fold(null, null); // no error
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utils.fold(null, null, null); // error: Unable to invoke type with no call signatures
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//// [genericFunctionsWithOptionalParameters2.js]
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var utils;
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utils.fold();
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utils.fold(null);
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utils.fold(null, null);
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utils.fold(null, null, null);
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