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---
title: "pause()"
layout: default
section: api
---
Pause the stream if the stream is running. Once paused, the
stream stops sending `data` events.
__Returns__ : The current StreamHelper object, for chaining.
## Example
```js
zip
.generateInternalStream({type:"uint8array"})
.on('data', function(chunk) {
// if we push the chunk to an other service which is overloaded, we can
// pause the stream as backpressure.
this.pause();
}).resume(); // start the stream the first time
```
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