What is the best way to integrate environment-specific configuration options into an AngularJS and Typescript project?

Currently, I am working on a project using AngularJS, Typescript, and VisualStudio. One of the key requirements for this project is to have a configuration file containing constants that control various settings such as REST API URLs and environment names. How can I achieve this in a project like this?

I was thinking of having a development config file called app.dev.config.ts, structured like this:

module app.config {
    export class ConfigSettings {
        static environment(): string { return "dev"; }
        static dataApiBaseUrl(): string { return "DevDataService"; }
    }
}

and also having a app.prod.config.ts like this:

module app.config {
    export class ConfigSettings {
        static environment(): string { return "prd"; }
        static dataApiBaseUrl(): string { return "PrdDataService"; }
    }
}

However, I quickly realized that having these two classes with the same name won't actually work.

I need a solution where I can build this only once on my build server and then deploy it to a fixed number (3) of environments. Perhaps this involves renaming a config file during deployment to match the specific environment. This is a process I'm familiar with from working on C# projects and their config files.

I've tried looking online for solutions to this issue, but all I came across were references to tsconfig.json files.

Answer №1

After some research, I came up with a solution.

1) To organize my configuration files better, I created separate files like env.dev.ts and env.prd.ts within my project. Here is an example of their contents:

angular.module('compdb') 
    .constant('env', 'prd')
    .constant('key1', 'prd value 1')
    .constant('key2', 'prd value 2');

2) These files are transpiled by Visual Studio into env.dev.js, etc.

3) Using gulp in my build process, I copy the env.*.js files to the output directory.

4) In my Index.cshtml file, I ensure that env.js is included after the scripts that create the compdb angular module.

5) Whenever I deploy my code to a new environment, I simply rename the relevant config file (e.g., env.prd.js) to env.js.

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