Using JSDoc with Typescript

Utilising JSDoc, we can get Typescript types in .js files.

@type can reference types. The type can be:

1. A primitive, like string
2. Declared in a Typescript declaration
3. Declared in a JSDoc @typedef tag

The type syntax can be fairly complicated, like conditional types, unions, etc.

For example:

// jest.config.js

/** @type { import("@jest/types").Config.InitialOptions } */
module.exports = { ... }

https://www.typescriptlang.org/docs/handbook/jsdoc-supported-types.html

[[js]] [[ts]]