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