better-npm-init/templates/npm/electron/node_modules/rxjs/dist/esm/internal/operators/pairwise.js

A better version of npm init, with templates and more. Usage: better-npm-init <template> [--yarn] [--install] [--git] [--yes] [--help]

import { operate } from '../util/lift';
import { createOperatorSubscriber } from './OperatorSubscriber';
export function pairwise() {
    return operate((source, subscriber) => {
        let prev;
        let hasPrev = false;
        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
            const p = prev;
            prev = value;
            hasPrev && subscriber.next([p, value]);
            hasPrev = true;
        }));
    });
}
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