Exporting libraries in TypeScript using 'namespaces' allows for organizing code into logical groupings, streamlining

Imagine you have a project with the file structure below:

This particular project is named 'my-module'

If you want to import this library into another project, you'd do so like this:

import { User, Home } from 'my-module/Models'
import { BaseWindow } from 'my-module/View'

How can this be achieved? How should the .d.ts file be prepared?

EDIT:

Project Link

The content of the files mentioned above are quite simple, see an example below:

interface IUser {
  name: string;
  age: number;
}

type UserOptions = IUser & {
  foo: string
}

class User implements IUser {
  private foo: string;
  name: string;
  age: number;
  constructor(options: UserOptions) {
    this.name = options.name;
    this.age = options.age;
    this.foo = options.foo;
  }
}

export { User, UserOptions };

Answer №1

It appears that the contents you are looking for in src/Models/index.ts should be as follows:

export * from "./User";
export * from "./Home";

Assuming your module resolution is configured correctly, you can then proceed to write:

import { User, UserOptions } from "my-module/Models";

By doing so, references to User and UserOptions will point to the class and type alias specified in src/Models/User.ts, respectively. If both src/Models/User.ts and src/Models/Home.ts have symbols with identical names, the first export * statement takes precedence.

Resolving Module Issues

If importing my-module/ suggests completions of src and dist, you may need to import the full relative path to the corresponding .js and .d.ts files (typically located within the dist directory). To eliminate the presence of dist in your import paths, several options are available, none of which are ideal:

  1. Avoid using separate src and dist directories; organize all files starting from the project root.
  2. Employ a customizable module bundler or loader that allows customization for imports like import "my-module/Models" to directly access the dist folder. If the current bundler/loader does not seamlessly integrate with TypeScript, utilize TypeScript's path mapping functionalities to align TypeScript's module resolution behavior with that of the bundler/loader.
  3. Manually redirect each import path to their respective files under the dist directory by creating either pairs of .js and .d.ts files that import the actual paths or a customized package.json file containing fields such as main and types specifying the real paths.

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