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e53046b9ec
Summary:
After examining how React Native sets up `process.env.NODE_ENV` using `global.__DEV__` from `prelude_dev.js` or `prelude.js` by treating them like polyfills I decided to use the same approach for environment variables. I setup my own rn-project.config.js file like so:
```
const blacklist = require('react-native/packager/blacklist');
const pathJoin = require('path').join;
module.exports = {
getBlacklistRE: function() {
return blacklist([/build\/.*/, /app\/assets\/webpack.*/]);
},
polyfillModuleNames: [pathJoin(__dirname, 'globals.js')]
};
```
I ran the packaging server using:
`react-native start --config=config/react-native/rn-project.config.js --reset-cache`
I expected my polyfillModuleNames to be passed into the Packager properly and be handled the same way the built-in polyfills worked. Unfortunately I noticed the Packager wasn't actually getting `opt.polyfillModuleNames`. Digging into the code a bit, it seems the local-cli wasn't passing the polyfillModuleNames from the config.
There are no specs for runServer.js but this change can be tested by using a config that contains polyfillModuleNames. Sample config and run command provided above simple `global.js` provided below:
```
global.process = global.process ? global.process : {};
global.process.env = global.process.env ? global.process.env : {};
global.process.env['PROJECT_ENV'] = 'staging';
```
Closes https://github.com/facebook/react-native/pull/13725
Differential Revision: D5077615
Pulled By: jeanlauliac
fbshipit-source-id: f66a8a8bda2702cd9a4e5b92f5335f43ab2f9089