What purpose does the "dom" serve in the "lib" array found in the tsconfig.json configuration file of an

Within my Angular 6 project, I encountered the following segment in tsconfig.json and ts.config.spec.json:

"lib": [
      "es2016",
      "dom"
    ]

I am curious about the role of dom.

The official documentation explains: "... you can exclude declarations you do not want to include in your project, e.g. DOM if you are working on a node project using --lib es5, es6."

However, the practical implications of this statement are unclear to me. No specific information is provided regarding which declarations should be excluded.

My testing environment was dysfunctional until I added dom to the lib array in tsconfig.spec.ts. What exact purpose does this serve?

javascriptangulartypescriptconfig

Answer №1

dom lib is a collection of JavaScript Web API interfaces such as DOM, DOM Events, Audio, Canvas, Video, and XHR API. You can find the complete source code here

If you are working on frontend web development, it is essential to include this library. For backend Node.js development, it may not be necessary but there are some packages that are used for both frontend and backend. Not including it could result in type missing errors during compilation.

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