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| 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;
| }));
| });
| }
| //# sourceMappingURL=pairwise.js.map
|
|
