In WebStorm, add a tsconfig.json file by choosing File – New tsconfig.json File from the menu. The tsconfig.json file is a JSON file that tells the TypeScript compiler how to compile TypeScript to JavaScript. When you’re ready to start writing TypeScript code, add a tsconfig.json file (TypeScript configuration file) to the project. You can use it in any WebStorm project, including built-in project templates using JavaScript frameworks or existing projects. You don’t need to do anything to use TypeScript with WebStorm. TypeScript makes writing JavaScript apps quite easy because of these new programming features! Install and Configure TypeScript Finally, TypeScript has many syntactical enhancements and features from ECMAScript even before they’re standardized. It also performs module resolution and has the notion of namespaces, so you can more easily organize code. In addition to data types, TypeScript, like JavaScript, is object-oriented, so you can create models that mirror data stores or objects in the real world. TypeScript offers a full type system, since types are important to create correct code. This might sound easy, and it is – an easy way to get into trouble! This is especially true if some data is accepted from an input source that doesn’t match the expected type. Developers are free to change the data type of variables during a program’s execution. While JavaScript does contain a few primitive types, its type system is loosely typed, and types are inferred by their usage. Types are at the heart of TypeScript, and it performs type checking when compiling to JavaScript. TypeScript is a superset of JavaScript that contains features that make it easier to write and maintain than standard JavaScript. You can also create a new tsconfig.json file using a template via the New file popup ( Cmd-N on OS X and Alt-Insert on Windows and Linux).Rachel Appel TypeScript Language Overview Press Alt-Enter or just start typing to get a list of all properties and their available options. WebStorm 2016.1 has greatly improved coding assistance for the tsconfig.json file. You can enable that in Preferences | Languages & Frameworks | TypeScript. At the same you will be able to benefit from WebStorm’s refactoring capabilities and more. It might provide more precise results and work faster compared to the WebStorm’s own coding assistance. This option may be useful if you have some other build tool running the compilation.Įxperimental: WebStorm 2016.2 adds experimental integration with the TypeScript internal service that provides code completion and analysis. Tip: If you want to see errors from the compiler in the editor without automatically generating compiled files along the way, in your tsconfig.json file specify "compileOnSave": false. Double-click the error message to jump to the source code. Or you can assign them to the shortcut of your choice in Preferences | Keymap.Īny errors occurred during compilation would be shown in this tool window and also right in the editor (if you have enabled the Track changes compiler option). These actions are available via Find action popup (Cmd-Shift-A) or on the TypeScript Compiler tools window. There are two modes in which you can use a built-in TS compiler: it can either compile your code automatically as you write the code (check Track changes option), or you can trigger it manually with Compile All or Compile Current File actions. To do so, click Edit… next to the compiler version in Preferences and specify a path to the TypeScript compiling service ( lib folder in the TypeScript package with typescriptServices.js and lib.d.ts files). You can configure WebStorm to use a different version of the TypeScript compiler. Using different version of TypeScript compiler That way TypeScript compiler will generate source map file with inlined sources and when debugging the code the breakpoints set in the TypeScript code will be properly hit. If you’d like to debug your TypeScript code using WebStorm or Chrome, make sure you add these two compiler options in the project tsconfig.json file: These would then be used instead of the options in a tsconfig.json file (though we recommend using tsconfig.json). You can configure the compiler behavior in Preferences | Languages & Frameworks | TypeScript.įor example, you can select Set options manually and specify the required compiling options as a command line arguments. If you have a tsconfig.json file in your project, WebStorm will retrieve all the compiler options and project configuration from it and use them automatically. Once you open a TypeScript file, WebStorm will suggest enabling its built-in TypeScript compiler to compile your code to JavaScript. To help you quickly get started with a new TypeScript project, WebStorm offers a built-in TypeScript compiler that you can use instead of configuring some other build tool. TypeScript is getting more and more popular recently, especially for Angular 2 projects.
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