wiki/content/20200930105954-ambient_declarations.md

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date id title
20200930 e1048c95-3baa-445e-a943-bff7b86a0f29 Ambient Declarations

Introduction

Ambient declarations allow you to safely use existing popular JavaScript libraries and incrementally migrate your JavaScript/CoffeeScript/Other-Compile-To-Js-Language project to TypeScript.

Declaration Files

Syntax is simple:

declare var foo: any

Declarations can be put in a .ts or .d.ts file, ie: global.d.ts or vendor.d.ts

Best Practices