---
## Getting Started
Install: `npm install --save @ghostery/adblocker-puppeteer`.
## Usage
For a *complete example* check-out: [@ghostery/adblocker-puppeteer-example](https://github.com/ghostery/adblocker/tree/master/packages/adblocker-puppeteer-example).
Creating an instance of `PuppeteerBlocker` and start blocking ads!
```javascript
import puppeteer from 'puppeteer';
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
import fetch from 'cross-fetch'; // required 'fetch'
const browser = await puppeteer.launch();
const page = await browser.newPage();
PuppeteerBlocker.fromPrebuiltAdsAndTracking(fetch).then((blocker) => {
blocker.enableBlockingInPage(page);
});
```
You are ready to block ads!
There are other ways you can *create an instance of the blocking engine* to
start blocking ads.
If you already have filters locally:
```javascript
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
const blocker = PuppeteerBlocker.parse(fs.readFileSync('easylist.txt', 'utf-8'));
```
Fetching lists from URLs:
```javascript
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
import fetch from 'cross-fetch'; // required 'fetch'
const blocker = await PuppeteerBlocker.fromLists(fetch, [
'https://easylist.to/easylist/easylist.txt'
]);
```
Use ready-made configs to block ads and optionally trackers:
```javascript
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
import fetch from 'cross-fetch'; // required 'fetch'
let blocker = await PuppeteerBlocker.fromPrebuiltAdsOnly(fetch); // ads only
blocker = await PuppeteerBlocker.fromPrebuiltAdsAndTracking(fetch); // ads and tracking
```
### Disabling Blocker in page
To stop blocking ads in a page:
```javascript
await blocker.disableBlockingInPage(page);
```
### Caching Blocker using Serialization
To avoid having to create the same instance of `PuppeteerBlocker` all over again,
you can serialize it to a byte-array which you can store on disk for faster
loading.
```javascript
import puppeteer from 'puppeteer';
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
import fetch from 'cross-fetch'; // required 'fetch'
import { promises as fs } from 'fs'; // used for caching
const browser = await puppeteer.launch();
const page = await browser.newPage();
PuppeteerBlocker.fromPrebuiltAdsAndTracking(fetch, {
path: 'engine.bin',
read: fs.readFile,
write: fs.writeFile,
}).then((blocker) => {
blocker.enableBlockingInPage(page);
});
```
Or you can do this manually to control the way caching is done:
```javascript
import { PuppeteerBlocker } from '@ghostery/adblocker-puppeteer';
import fetch from 'cross-fetch'; // required 'fetch'
PuppeteerBlocker.fromPrebuiltAdsAndTracking(fetch).then((blocker) => {
const buffer = blocker.serialize();
const restoredBlocker = PuppeteerBlocker.deserialize(buffer);
// `restoredBlocker` is deep-equal to `blocker`!
});
```
---
_Source: https://npm.io/package/@ghostery/adblocker-puppeteer · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._
