‫TypeScript 4.0 Beta منتشر شد

Now let’s take a look at what’s in store for TypeScript 4.0!

Variadic Tuple Types
Labeled Tuple Elements
Class Property Inference from Constructors
Short-Circuiting Assignment Operators
unknown on catch Clauses
Custom JSX Factories
Speed Improvements in build mode with --noEmitOnError
--incremental with --noEmit
Editor Improvements
  /** @deprecated */ Support
  Partial Editing Mode at Startup
  Smarter Auto-Imports
Breaking Changes