I am in the process of developing a system to manage multiple environments seamlessly within Angular CLI.
To achieve this, I am following a certain approach: https://i.sstatic.net/GuoGO.jpg
The main objective is to define the base URLs for various REST endpoints only once and make them accessible across all environments through extension or other methods.
How would you recommend implementing this effectively?
If you want to use multiple environment files, here's a guide on how to do it. When building your project, you'll need to specify the configuration you want to use (e.g., prod, test, uat).
To start, add all your configurations in the angular.json file:
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
}
]
},
"develop": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.develop.ts"
}
]
},
"release": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.release.ts"
}
]
},
"uat": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.uat.ts"
}
]
},
}
Don't forget to add the corresponding URLs for each file. When building or serving your app locally, make sure to specify the configuration:
ng build --configuration=uat // for uat environment
ng serve --configuration=uat
or
ng build --prod // for production environment
When importing, ensure that you reference it correctly so that the right configuration is applied:
import { environment } from 'src/environments/environment';
When utilizing webpack, consider creating an environment.ts file that contains environment-specific data in an object format....
{
environment: 'dev',
baseurl: 'http://myBaseUrl'
}
For various environments such as production or quality assurance, create separate files with the same object structure. Import the generic environment.ts file whenever environment information is required....
In each webpack configuration, incorporate the NormalModuleReplacementPlugin...
new webpack.NormalModuleReplacementPlugin(/\.\/environment\./, './environment.qa.ts')
This approach instructs webpack to replace any import of environment with environment.qa (or the relevant version) throughout the project.
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