49 lines
1.2 KiB
Markdown
49 lines
1.2 KiB
Markdown
# Debugging the main process
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The devtools of browser window can only debug the renderer process scripts.
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(I.e. the web pages.) In order to provide a way to debug the scripts of
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the main process, Electron has provided the `--debug` and `--debug-brk`
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switches.
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## Command line switches
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### `--debug=[port]`
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When this switch is used Electron would listen for V8 debugger protocol
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messages on `port`, the `port` is `5858` by default.
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### `--debug-brk=[port]`
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Like `--debug` but pauses the script on the first line.
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## Use node-inspector for debugging
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__Note:__ Electron uses node v0.11.13, which currently doesn't work very well
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with node-inspector, and the main process would crash if you inspect the
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`process` object under node-inspector's console.
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### 1. Start the [node-inspector][node-inspector] server
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```bash
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$ node-inspector
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```
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### 2. Enable debug mode for Electron
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You can either start Electron with a debug flag like:
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```bash
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$ electron --debug=5858 your/app
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```
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or, to pause your script on the first line:
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```bash
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$ electron --debug-brk=5858 your/app
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```
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### 3. Load the debugger UI
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Open http://127.0.0.1:8080/debug?port=5858 in the Chrome browser.
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[node-inspector]: https://github.com/node-inspector/node-inspector
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