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Highlights / tl;dr:

- ability to check .js files

- default type parameters (eg; `class Component<Props, State = object> {}`)

- generators/iterators (including async-generators, a stage 3 proposal).

- `--strict` flag to easily give you --strictNullChecks, --noImplicitAny, --noImplicitThis, and --alwaysStrict

- language server plugins are official (the Angular and Vue ones were promoted in particular)

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I wish TS would consider the annotation-in-comments form from flow: https://flow.org/blog/2015/02/20/Flow-Comments/

For switching a large existing JS codebase, it's easy to add flow comments without changing the final minified builds, allowing you to reap the full benefits of the type check.

TypeScript allows for JSDoc Comments for types in .js files with `--allowJs`. you do not need to change your code for that.

See https://github.com/Microsoft/TypeScript/wiki/JSDoc-support-i...

Thank you! I've been trying to figure out how to get JSDoc-ed code to get appropriately typed in Visual Studio Code with Typescript files as well.

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