@reactivex/ix-esnext-esm/asynciterable/operators/pairwise.js

The Interactive Extensions for JavaScript

import { AsyncIterableX } from '../asynciterablex';
export class PairwiseAsyncIterable extends AsyncIterableX {
    constructor(source) {
        super();
        this._source = source;
    }
    async *[Symbol.asyncIterator]() {
        let value;
        let hasValue = false;
        for await (const item of this._source) {
            if (!hasValue) {
                hasValue = true;
            }
            else {
                yield [value, item];
            }
            value = item;
        }
    }
}
export function pairwise() {
    return function pairwiseOperatorFunction(source) {
        return new PairwiseAsyncIterable(source);
    };
}

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