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Update config doc to include how to use env vars #36

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19 changes: 18 additions & 1 deletion docs/v3.x/getting-started/configuration.md
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Expand Up @@ -217,6 +217,23 @@ build: {
extend: () => {} // can be used to modify webpack config
}
```
---
If you want to load env files to your code depend on the environment, you could take advantage of the extend config here. Under `build.extend`, you can add your own plugins by doing something like this
```
extend: {
plugins: [
new webpack.DefinePlugin({
'process.env': JSON.stringify(envVars)
})
]
}
```
You can grab the envVars dynamically from the file depends on the `NODE_ENV`. For example, if you are using dotenv package:
```
const nodeEnv = process.env.NODE_ENV || 'development';
const dotenv = require('dotenv')
const envVars = dotenv.parse(fs.readFileSync(`.env.${env}`));
```

---
## devServer
Expand Down Expand Up @@ -268,4 +285,4 @@ unitTesting: {
]
}
```
*Note - these settings correspond to v3.5+ refer to <a href="/aofl/#/v2.x/getting-started/configuration?id=unittesting" rel="noopener noreferrer">v2</a> documentation for earlier versions*
*Note - these settings correspond to v3.5+ refer to <a href="/aofl/#/v2.x/getting-started/configuration?id=unittesting" rel="noopener noreferrer">v2</a> documentation for earlier versions*