One of the evolutions in JavaScript development is the new TypeScript language, an open-source superset of JavaScript that allows us to write code in a typed language which compiles to JavaScript. At JеtВrаins wе wоrk tirеlеssly tо bring аbоut mоrе аnd bеttеr suрроrt fоr this lаnguаgе. WebStorm 6 introduces full support for the TypeScript language through 3 new features: File Watchers, Sourcemaps and general support for working with code. (more…)

Today's post is about a nice feature set (many of you have been using for a long time) and its recent improvements. I'm talking about static type checking when type of parameter or variable on the left side of assignment or function return type is explicitly specified in JSDoc annotation. For 5.0 release we've supported Google Closure types syntax, so that quite complex situations can be handled more accurately and conveniently. To start with let's consider the most basic situation: (more…)