50 lines
1.3 KiB
Markdown
50 lines
1.3 KiB
Markdown
# Debugging the Main Process
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The browser window devtools can only debug the renderer process scripts (i.e.
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the web pages). In order to provide a way to debug the scripts from the main
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process, Electron has provided the `--debug` and `--debug-brk` switches.
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## Command Line Switches
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Use the following command line switches to debug Electron's main process:
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### `--debug=[port]`
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When this switch is used Electron will listen for V8 debugger protocol
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messages on `port`. The default `port` is `5858`.
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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 will 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?ws=127.0.0.1:8080&port=5858 in the Chrome browser.
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[node-inspector]: https://github.com/node-inspector/node-inspector
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