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| import { Observable } from "rxjs"; | |
| Observable.prototype[Symbol.asyncIterator] = createAsyncIterator; | |
| async function* createAsyncIterator() { | |
| const promise = []; | |
| const values = []; | |
| let done = false; | |
| let error = null; | |
| const subscription = this.subscribe({ | |
| next(value) { | |
| values.push(value); | |
| promise.splice(0).forEach(r => r()); | |
| }, | |
| error(err) { | |
| error = err; | |
| promise.splice(0).forEach(r => r()); | |
| }, | |
| complete() { | |
| done = true; | |
| promise.splice(0).forEach(r => r()); | |
| }, | |
| }); | |
| try { | |
| while (true) { | |
| while (values.length > 0) yield values.shift(); | |
| if (error) throw error; | |
| if (done) break; | |
| await new Promise(r => promise.push(r)); | |
| } | |
| } finally { | |
| subscription.unsubscribe(); | |
| } | |
| } |
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