Microsoft Ships Open Source TypeScript 3.0
The company unveiled TypeScript in 2012 and has since continued to be the primary driver of its development.
"At its core, this experience means analyzing your code to catch things like bugs and typos before your users run into them; but it brings more than that," Microsoft's Daniel Rosenwasser said in a post yesterday (July 30) announcing v3.0. "Thanks to all that information and analysis TypeScript can provide a better authoring experience, providing code completion and navigation features like Find all References, Go to Definition, and Rename in your favorite editor."
TypeScript 3.0 introduces few breaking changes from its preceding versions, Microsoft said, which means it should make for an easy upgrade.
Among new features, Rosenwasser highlighted new project reference functionality, designed to better support various project scenarios, such as multiple folders with a variety of interdependent and shared code strategies.
"Project references allow TypeScript projects to depend on other TypeScript projects –- specifically, allowing tsconfig.json files to reference other tsconfig.json files," Rosenwasser said. "Specifying these dependencies makes it easier to split your code into smaller projects, since it gives TypeScript (and tools around it) a way to understand build ordering and output structure. That means things like faster builds that work incrementally, and support for transparently navigating, editing, and refactoring across projects. Since 3.0 lays the foundation and exposes the APIs, any build tool should be able to provide this."
The new version also introduces new support for operating on parameter lists, new types that enforce explicit checks, improved JSX support (JSX is a syntax extension integral to React.js), a better error UX and much more, Rosenwasser said.
Details on these and other new functionality can be found in our sister Visual Studio Magazine site's coverage of the release candidate, the open source documentation, the project's "what's new" section of its GitHub site and in Rosenwasser's post.
TypeScript 3.0 can be installed through NuGet or the npm package manager.
The TypeScript roadmap provides more guidance on what's coming up for the language.
David Ramel is the editor of Visual Studio Magazine.