github-pages-deploy-action/node_modules/rxjs/_esm5/internal/operators/elementAt.js
2020-03-06 22:45:40 -05:00

19 lines
832 B
JavaScript

/** PURE_IMPORTS_START _util_ArgumentOutOfRangeError,_filter,_throwIfEmpty,_defaultIfEmpty,_take PURE_IMPORTS_END */
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(); }));
};
}
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