How to Install

Install the streamlets package (via NPM or yarn):

npm i streamlets

On modern browsers or Deno, you can directly import it from Skypack:

<!-- browser -->
<script type="module">
  import { pipe, interval, tap, observe } from 'https://cdn.skypack.dev/streamlets'

  // ...
</script>

// deno
import { pipe, interval, tap, observe } from 'https://cdn.skypack.dev/streamlets'

// ...

👉 IMPORTANT

For use in production, always use a pinned URL. You can generate one by opening this link.

Environment

Some utilities depend on AbortController. It is already implemented in most modern browsers, in Deno and in Node 15.0.0 upwards. For older environments, you can use this polyfill. If your Node version is under 14.5.0, you also would need a polyfill for EventTarget:

npm i event-target-polyfill yet-another-abortcontroller-polyfill

import 'event-target-polyfill'
import 'yet-another-abortcontroller-polyfill'

// ...

Additionally, fetch() utility relies on the native fetch(), which is absent from Node. You can use isomorphic-fetch to bridge that gap:

npm i isomorphic-fetch

import 'isomorphic-fetch'

// ...

Ancient Browsers

You can also get the bundle from a CDN like UNPKG, though this method is only recommended for browsers not supporting JavaScript Modules (which are pretty rare):

<script src="https://unpkg.com/streamlets/dist/bundles/streamlet.es5.min.js"></script>
<script>
  const {
    interval, pipe, tap, startWith, observe,
  } = streamlet

  // ...
</script>

In such an environment, you will also need all of these polyfills.

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