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34 lines
804 B
34 lines
804 B
import type { Observable } from 'rxjs';
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export const promisifyObservable =
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<TArgs extends any[], TOutput>(f: (...args: TArgs) => Observable<TOutput>) =>
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(...args: TArgs) =>
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new Promise<TOutput>((_resolve, _reject) => {
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let isCalled = false;
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const resolve = (result: TOutput) => {
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if (isCalled) {
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console.log('observable emits more than once');
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return;
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}
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_resolve(result);
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};
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const reject = (error: unknown) => {
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if (isCalled) {
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console.log('observable emits more than once');
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return;
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}
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_reject(error);
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};
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try {
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f(...args).subscribe({
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next: resolve,
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error: reject,
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});
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} catch (error) {
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reject(error);
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}
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});
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