So, how is TypeScript open?
The TypeScript language is made available under the Open Web Foundation’s OWFa 1.0 Specification Agreement, and the community is invited to discuss the language specification. Microsoft’s implementation of the compiler is also available on CodePlex under the Apache 2.0 license. There you can view the roadmap, and over the next few weeks and months you’ll see the TypeScript team continue to develop on CodePlex in the open.
And how is it interoperable?
Give your feedback
TypeScript is one foray into making programming languages and tooling even more productive. Pick it up, take it for a spin, and give your feedback. You can contribute by discussing the language specification or filing a bug.
Senior Technical Evangelist
Microsoft Open Technologies, Inc.