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MattSPalmer/on-subscribe.js

Last active May 11, 2020 04:43
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debug subscriptions
Raw
on-subscribe.js
const onSubscribe = (fn) => stream => Rx.defer(() => {
fn();
return stream;
})
const logOnSubscribe = message => onSubscribe(() => console.log(message));
Rx.interval(10e3).pipe(
switchMap(() => interval(200).pipe(
logOnSubscribe('subscribed to 200ms interval')
))
).subscribe();
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