{"id":263,"date":"2013-01-21T13:50:00","date_gmt":"2013-01-21T13:50:00","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/typescript\/2013\/01\/21\/announcing-typescript-0-8-2\/"},"modified":"2024-07-01T11:05:07","modified_gmt":"2024-07-01T19:05:07","slug":"announcing-typescript-0-8-2","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/typescript\/announcing-typescript-0-8-2\/","title":{"rendered":"Announcing TypeScript 0.8.2"},"content":{"rendered":"

We\u2019re happy to announce the 0.8.2 preview release<\/a> of TypeScript.\u00a0 This release has been focused on\u00a0 addressing key usability feedback and filling in tooling experiences.\u00a0 Along the way, we\u2019ve also incorporated some of the highest-rated feature requests and bugfixes.<\/p>\n

JSDoc Support<\/h2>\n

Being able to see API documentation comments during Intellisense and parameter help has been a highly requested feature.\u00a0 In fact, it\u2019s currently the 2nd most-requested<\/a> feature in the issue tracker.<\/p>\n

With 0.8.2, the TypeScript compiler and tools now support JSDoc comments.<\/p>\n

\"Image<\/a><\/p>\n

In the TypeScript implementation, because types are already part of the system, we allow the JSDoc type annotation to be elided, as in the example above.<\/p>\n

You can now document a variety of language constructs (including classes, modules, interfaces, and functions) with comments that become part of the information displayed to the user.\u00a0 We\u2019ve also started extending lib.d.ts, the default JS and DOM API library, with JSDoc comments.<\/p>\n

This capability is also part of the language service, so cross-platform tools can take advantage of it.<\/p>\n

Compile-on-Save<\/h2>\n

Many of the themes in this release center around simplifying workflow.\u00a0 We\u2019ve focused on a few key areas with the aim of streamlining developing in TypeScript.<\/p>\n

Languages like TypeScript which compile to JavaScript add a build step into the development cycle.\u00a0 Enabling a compile-on-save mode of use minimizes this overhead by automatically updating the compiled JS when the TypeScript source changes.\u00a0 With 0.8.2, we\u2019ve done work to further enable this in both the NPM-based compiler and in Visual Studio.<\/p>\n

The 0.8.2 release adds initial support for compile-on-save in Visual Studio.\u00a0 Just as the name implies, when enabled the project or file being edited will be compiled when the changes are saved.\u00a0 For more information, please see the wiki page for compile-on-save<\/a>.<\/p>\n

\"Image<\/a><\/p>\n

TypeScript supports compile-on-save on the command line using the cross-platform NPM-based TypeScript compiler as well with the improved –watch compiler option.\u00a0 This option allows a compile to begin watching a set of files.\u00a0 Once a watched file is changed, the compiler rebuilds the corresponding output for that file.<\/p>\n

Various Improvements<\/h2>\n