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The Interactive Extensions for JavaScript

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import { AsyncIterableX } from '../../asynciterable/asynciterablex.js'; import { defaultIfEmpty } from '../../asynciterable/operators/defaultifempty.js'; /** * @ignore */ export function defaultIfEmptyProto<T>( this: AsyncIterableX<T>, defaultValue: T ): AsyncIterableX<T> { return defaultIfEmpty<T>(defaultValue)(this); } AsyncIterableX.prototype.defaultIfEmpty = defaultIfEmptyProto; declare module '../../asynciterable/asynciterablex' { interface AsyncIterableX<T> { defaultIfEmpty: typeof defaultIfEmptyProto; } }