The combination of TypeScript output is not working as expected

Here is my current configuration:

tsconfig.json

{
    "compileOnSave": true,
    "compilerOptions": {
        "module": "none",
        "outFile": "js/app.js"
    }
}

MyApp.Main.ts

class Main
{
    constructor()
    {
        Utilities.init(this);
    }

    // Other methods
}

MyApp.Utilities.ts

class Utilities
{
    static init(app: Main)
    {
         // Do something with app...
    }

    // Other methods
}

After saving or recompiling the project, I notice that only separate files are generated for MyApp.Main.js and MyApp.Utilities.js, but not for app.js as specified in the outFile option.

I have also experimented with adding /// <reference ... /> paths to my "Main" class, but it did not result in combined outputs either.

A few things to consider:

  • I must maintain compatibility with IE and cannot target a newer ES version without a shim.
  • Introducing a module system is not an option due to project constraints, so the module has to be set as "none".
  • Using additional compilers like Babel is also not feasible at the moment.

In essence, I am looking for a solution using pure TypeScript, no module system, and retaining the (default) ES target. Any insights on why the outputs are not being merged into a single .js file?

Answer №1

Referencing the TypeScript documentation on compiler options at https://www.typescriptlang.org/docs/handbook/compiler-options.html (specifically regarding the --module option)

It is stated that only "AMD" and "System" can be used in conjunction with the --outFile flag.

Therefore, it is advised to adjust the module setting as instructed.

In situations like this where the TypeScript maintainers provide specific guidelines, it is best to follow them without trying to find workarounds.

The limitation here is that I cannot include any additional dependencies in the project.

What type of dependency are you referring to? Modules themselves do not impose the need for added dependencies.

Answer №2

If you omit the module option, the code should still function correctly!

Here is the configuration in my tsconfig.

{
  "compilerOptions": {
    "strict": true,
    "target": "es5",
    "removeComments": true,
    "noUnusedLocals":true,
    "noUnusedParameters":true,
    "sourceMap": true,
    "outFile": "docs/js/main.js"
},
  "include": [
    "dev/**/*"
  ]
}

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