![]() ![]() In the TypeScript world, most popular JavaScript libraries have their APIs described by. d.ts file (see TypeScript documentation), and types such as interfaces and classes declared in TypeScript are available for use as types in JsDoc comments.īelow, we show a simple example of a TypeScript definition file providing such type information (via an interface) to a JavaScript file in the same project (using a JsDoc tag).Īutomatic acquisition of type definitions ![]() For example, JavaScript IntelliSense can be provided for values declared in a. IntelliSense based on TypeScript declaration filesīecause JavaScript and TypeScript are based on the same language service, they are able to interact in a rich way. See the JsDoc information in Type Checking JavaScript Files for the JsDoc annotations currently supported. This.prop = param1 // "param1" (and thus "this.prop") are now of type "string".
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