15 lines
690 B
Plaintext
15 lines
690 B
Plaintext
import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
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import { filter } from './filter';
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import { throwIfEmpty } from './throwIfEmpty';
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import { defaultIfEmpty } from './defaultIfEmpty';
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import { take } from './take';
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export function elementAt(index, defaultValue) {
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if (index < 0) {
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throw new ArgumentOutOfRangeError();
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}
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var hasDefaultValue = arguments.length >= 2;
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return function (source) {
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return source.pipe(filter(function (v, i) { return i === index; }), take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(function () { return new ArgumentOutOfRangeError(); }));
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};
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}
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//# sourceMappingURL=elementAt.js.map |