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Clarify --dev flag for react-native-bundle

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Given some [confusion around `react-native bundle`'s `--dev` flag][1],
this hopes to clear somet things up int he docs by…

- Removing mentions of the `__DEV__` environment variable
    - I think it confuses the user on how to work with the command-line
      flag, and frankly it seems like an internal implementation detail
      from the perspective of react-native-cli. We should focus on what
      the `--dev` flag does (e.g., toggles dev warnings, performance
      optimizations).
- Adding a minimal note about native-land's build configurations and how
  that should be checked for production builds

[1]: https://github.com/facebook/react-native/issues/4181
This commit is contained in:
Andrew Sardone 2015-11-23 08:20:20 -05:00
parent f827a513a1
commit d92b3b3e9b
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docs/RunningOnDeviceIOS.md
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@ -32,7 +32,7 @@ You can also pack all the JavaScript code within the app itself. This way you ca
The bundle script supports a couple of flags: The bundle script supports a couple of flags:
* `--dev` - sets the value of `__DEV__` variable to true. When `true` it turns on a bunch of useful development warnings. For production it is recommended to set `__DEV__=false`. * `--dev` - a boolean with a default value of `true`. With the `--dev true` flag, the bundled JavaScript code turns on useful development warnings and limits performance optimizations. For production it is recommended to pass `--dev false`. Also for production, be sure to have your native build configuration set to `Release` (e.g., Xcode's Release configuration for iOS and gradle's `assembleRelease` task for Android) in order to disable things like the shake-to-show developer menu.
* `--minify` - pipe the JS code through UglifyJS. * `--minify` - pipe the JS code through UglifyJS.
Note that on 0.14 we'll change the API of `react-native bundle`. The major changes are: Note that on 0.14 we'll change the API of `react-native bundle`. The major changes are: