https://github.com/jameslnewell/observable

A super simple and light-weight observable implementation.
https://github.com/jameslnewell/observable

map observable observer pipe subscription

Last synced: 20 days ago
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A super simple and light-weight observable implementation.

• Host: GitHub
• URL: https://github.com/jameslnewell/observable
• Owner: jameslnewell
• Created: 2019-10-23T15:05:28.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2022-12-10T06:33:46.000Z (about 2 years ago)
• Last Synced: 2024-11-28T16:29:59.032Z (about 1 month ago)
• Topics: map, observable, observer, pipe, subscription
• Language: TypeScript
• Size: 483 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 14
• Metadata Files:
  • Readme: README.md

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README

        
# @jameslnewell/observable

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A super simple and light-weight observable implementation.

## Installation

```bash

yarn add @jameslnewell/observable

```

## Usage

```js

const {create, map, pipe} from '@jameslnewell/observable';

const numbers = (ms = 1000) => create(subscriber => {

  let count = 0;

  const handle = setInterval(() => subscriber.next(count++), ms);

  return () => clearInterval(handle);

});

const letters = pipe(map(number => String.fromCharCode(65 + number)))(numbers())

const subscription = letters.subscribe({

  next: data => console.log(data),

  error: error => console.error(error),

  completed: () => console.log('completed')

});

subscription.unsubscribe();

```

## API

### fromArray(array)

### fromError(array)

### create(factory): Observable

### map(fn)(observable): Observable

### delay(ms)(observable): Observable

### pipe(fn1, fn2, fn3)(Observable): Observable

### isObservable(value): boolean

### firstValueFrom(observable: Observable): Promise

### lastValueFrom(observable: Observable): Promise