hugoWebsite/node_modules/rxjs/dist/esm5/internal/operators/last.js

13 lines
665 B
JavaScript

import { EmptyError } from '../util/EmptyError';
import { filter } from './filter';
import { takeLast } from './takeLast';
import { throwIfEmpty } from './throwIfEmpty';
import { defaultIfEmpty } from './defaultIfEmpty';
import { identity } from '../util/identity';
export function last(predicate, defaultValue) {
var hasDefaultValue = arguments.length >= 2;
return function (source) {
return source.pipe(predicate ? filter(function (v, i) { return predicate(v, i, source); }) : identity, takeLast(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(function () { return new EmptyError(); }));
};
}
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