Ohm-Management - Projektarbeit B-ME
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first.js 763B

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  1. /** PURE_IMPORTS_START _util_EmptyError,_filter,_take,_defaultIfEmpty,_throwIfEmpty,_util_identity PURE_IMPORTS_END */
  2. import { EmptyError } from '../util/EmptyError';
  3. import { filter } from './filter';
  4. import { take } from './take';
  5. import { defaultIfEmpty } from './defaultIfEmpty';
  6. import { throwIfEmpty } from './throwIfEmpty';
  7. import { identity } from '../util/identity';
  8. export function first(predicate, defaultValue) {
  9. var hasDefaultValue = arguments.length >= 2;
  10. return function (source) { return source.pipe(predicate ? filter(function (v, i) { return predicate(v, i, source); }) : identity, take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(function () { return new EmptyError(); })); };
  11. }
  12. //# sourceMappingURL=first.js.map