Memory Streams library for JavaScript based on readable-stream
npm install memstreams
!node
!npm type definitions
!GitHub
> Memory Streams library for JavaScript based on readable-stream
> This library is forked from
> stream-mock
- Create a
readable stream
from any iterable.
- Create a
writable stream
that puts its data at your disposal.
- Create a
duplex stream
that combines a readable and writable stream together.
- Can operate both in
object and normal (
Buffer ) mode.
- Forward writable to readable through event write to replace queue
``shell`
yarn add memstreams
Or, if you are more a npm person
`shell`
npm i memstreams
You are building an awesome brand new
Transform stream
that rounds all your values.
rounder.ts
`javascript
import {Transform} from 'stream';
export class Rounder extends Transform {
_transform(chunk, encoding, callback) {
this.push(Math.round(chunk));
callback();
}
}
`
Now you need / want to test it.
example.ts
`typescript
import {ObjectReader, ObjectWriter} from 'memstreams';
import {Rounder} from './rounder';
const input = [1.2, 2.6, 3.7];
const transform = new Rounder({objectMode: true});
const reader = new ObjectReader(input, {autoEnd: true});
const writer = new ObjectWriter();
reader.pipe(transform).pipe(writer);
writer.on('finish', () => {
console.log(writer.data);
});
``
---
MIT