A stream condition for switch/case.
npm install @nuintun/switch-stream> A stream condition for switch/case
>
> [![NPM Version][npm-image]][npm-url]
> [![Download Status][download-image]][npm-url]
> [![Dependencies][david-image]][david-url]
``js
const switchStream = require('switch-stream');
process.in
.pipe(
switchStream(
buf => {
if (buf > 0) {
return 'case1';
} else if (buf < 0) {
return 'case2';
}
},
{
case1: streamA,
case2: streamB
}
)
)
.pipe(process.stdout);
``
If buf great than 0, then pipe to streamA. If buf less than 0, then pipe to streamB. Otherwise buf equal to 0, pipe to output directly.
#### switchStream(switch, cases, options)
* switch
Switch condition determine which case will be choose.
Switch can be any type, if switch is function, it will be called.
* cases
Choose which stream will be piped to by key switch return.
* options
The stream options settings.
Modify from popomore's stream-switch, but use stream3.
[npm-image]: https://img.shields.io/npm/v/@nuintun/switch-stream.svg?style=flat-square
[npm-url]: https://www.npmjs.org/package/@nuintun/switch-stream
[download-image]: https://img.shields.io/npm/dm/@nuintun/switch-stream.svg?style=flat-square
[david-image]: http://img.shields.io/david/nuintun/switch-stream.svg?style=flat-square
[david-url]: https://david-dm.org/nuintun/switch-stream