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Oct 27, 2017
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docs: use debug namespace instead of all namespaces #1174

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12 changes: 6 additions & 6 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -160,19 +160,19 @@ Explore the [API documentation](docs/api.md) and [examples](https://github.com/G


1. Enable verbose logging - All public API calls and internal protocol traffic
will be logged via the [`debug`](https://github.com/visionmedia/debug) module.
will be logged via the [`debug`](https://github.com/visionmedia/debug) module under the `puppeteer` namespace.

```sh
# Basic verbose logging
env DEBUG="*" node script.js
env DEBUG="puppeteer:*" node script.js

# Debug output can be enabled/disabled by namespace
env DEBUG="*,-*:protocol" node script.js # everything BUT protocol messages
env DEBUG="*:session" node script.js # protocol session messages (protocol messages to targets)
env DEBUG="*:mouse,*:keyboard" node script.js # only Mouse and Keyboard API calls
env DEBUG="puppeteer:*,-puppeteer:protocol" node script.js # everything BUT protocol messages
env DEBUG="puppeteer:session" node script.js # protocol session messages (protocol messages to targets)
env DEBUG="puppeteer:mouse,puppeteer:keyboard" node script.js # only Mouse and Keyboard API calls

# Protocol traffic can be rather noisy. This example filters out all Network domain messages
env DEBUG="*" env DEBUG_COLORS=true node script.js 2>&1 | grep -v '"Network'
env DEBUG="puppeteer:*" env DEBUG_COLORS=true node script.js 2>&1 | grep -v '"Network'
```


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