How can we prevent code (components\routing) from being included in non-production environments while using angular (TypeScript \ Webpack)?

Question

How can we prevent code (components\routing) from being included in non-production environments while using angular (TypeScript \ Webpack)?

I need to implement a login component and routing path in my application, even though there is no traditional login page as the authentication will be handled through a Single Sign-On (SSO) system. The purpose of adding this login functionality is to allow our Quality Assurance and Development teams to work more efficiently.

While I am aware that I can control the deployment of components using an environment.ts file with a production property, I want to ensure that the login component and routing are not included in the source files for production deploys.

Although building external tools such as a Chrome extension or desktop app is an option, due to the multiple environments we have, I would rather have a direct link within the application to enable/disable this feature.

Is there a way, perhaps utilizing some form of @Attribute, to exclude specific chunks of code based on the environment? Are there any best practices for achieving this kind of functionality? I suspect that if it is possible, it may involve features of Typescript and Webpack.

angular typescript webpack

Answer 1

Answer №1

If you're searching for a Webpack loader that can toggle code based on environment using attributes, I'm not aware of any existing ones. However, you have the option to create your own custom loader and even contribute it to GitHub for others to benefit from:

https://github.com/webpack/docs/wiki/how-to-write-a-loader

You can develop a straightforward loader that fetches the source code of your application as a string, and then removes classes that do not match the current environment specified in environment.ts by leveraging regex or simple string replacement.

I hope this information proves valuable to you!

Answer 2

If you're searching for a Webpack loader that can toggle code based on environment using attributes, I'm not aware of any existing ones. However, you have the option to create your own custom loader and even contribute it to GitHub for others to benefit from:

https://github.com/webpack/docs/wiki/how-to-write-a-loader

You can develop a straightforward loader that fetches the source code of your application as a string, and then removes classes that do not match the current environment specified in environment.ts by leveraging regex or simple string replacement.

I hope this information proves valuable to you!

Answer 3

Answer №2

Perhaps it may not be suitable for your situation, but one approach I have used to address a similar issue is by creating a secondary main.ts file. Let's say we have the original file called main_withSSO.ts and a second one named main_noSSO.ts. The latter includes an additional login page or routing component.

In this setup, the webpack configuration can be set up based on an environment variable that determines which main.ts file should be included in the build process.

For example, here is a sample webpack configuration:

function getMainEntryFile(env) {
    if (env && env.sso) {
        return "PATH-TO-main_withSSO.ts"
    }
    return "PATH-TO-main_noSSO.ts";
}

module.exports = function(env){
    return {
        "entry": {
            "main": [
                getMainEntryFile(env)
            ],
        }
    }

To build the project using this setup, you can use the following command:

npm run clean && webpack --env.sso

Answer 4

Perhaps it may not be suitable for your situation, but one approach I have used to address a similar issue is by creating a secondary main.ts file. Let's say we have the original file called main_withSSO.ts and a second one named main_noSSO.ts. The latter includes an additional login page or routing component.

In this setup, the webpack configuration can be set up based on an environment variable that determines which main.ts file should be included in the build process.

For example, here is a sample webpack configuration:

function getMainEntryFile(env) {
    if (env && env.sso) {
        return "PATH-TO-main_withSSO.ts"
    }
    return "PATH-TO-main_noSSO.ts";
}

module.exports = function(env){
    return {
        "entry": {
            "main": [
                getMainEntryFile(env)
            ],
        }
    }

To build the project using this setup, you can use the following command:

npm run clean && webpack --env.sso

How can we prevent code (components\routing) from being included in non-production environments while using angular (TypeScript \ Webpack)?

Answer №1

Answer №2

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