24 lines
770 B
JavaScript
24 lines
770 B
JavaScript
import { EmptyError } from './util/EmptyError';
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import { SafeSubscriber } from './Subscriber';
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export function firstValueFrom(source, config) {
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const hasConfig = typeof config === 'object';
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return new Promise((resolve, reject) => {
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const subscriber = new SafeSubscriber({
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next: (value) => {
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resolve(value);
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subscriber.unsubscribe();
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},
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error: reject,
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complete: () => {
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if (hasConfig) {
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resolve(config.defaultValue);
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}
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else {
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reject(new EmptyError());
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}
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},
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});
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source.subscribe(subscriber);
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});
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}
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//# sourceMappingURL=firstValueFrom.js.map
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