lastValueFrom.js•798 B
import { EmptyError } from './util/EmptyError';
export function lastValueFrom(source, config) {
const hasConfig = typeof config === 'object';
return new Promise((resolve, reject) => {
let _hasValue = false;
let _value;
source.subscribe({
next: (value) => {
_value = value;
_hasValue = true;
},
error: reject,
complete: () => {
if (_hasValue) {
resolve(_value);
}
else if (hasConfig) {
resolve(config.defaultValue);
}
else {
reject(new EmptyError());
}
},
});
});
}
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