@tsd/typescript

TypeScript with some extras for type-checking.

Usage no npm install needed!

<script type="module">
  import tsdTypescript from 'https://cdn.skypack.dev/@tsd/typescript';
</script>

README

@tsd/typescript CI

TypeScript with some extras for type-checking.

This is a drop-in replacement for TypeScript, including the binaries like tsc and tsserver. It exposes extra methods on the internal TypeChecker object.

Install

npm install --save-dev @tsd/typescript

Usage

This package is just TypeScript with some private methods exposed that tsd needs for enhanced type checking.

  • isTypeIdenticalTo(a: Type, b: Type): Check if two types are identical to each other. More info...
  • isTypeSubtypeOf(a: Type, b: Type): Check if type a is a subtype of type b. More info...
  • isTypeAssignableTo(a: Type, b: Type): Check if type a is assignable to type b.
  • isTypeDerivedFrom(a: Type, b: Type): Check if type a is derived from type b. More info...
  • isTypeComparableTo(a: Type, b: Type): Check if type a is comparable to type b. More info...
  • areTypesComparable(a: Type, b: Type): Check if type a is comparable to type b and b is comparable to type a. More info...

Related

  • tsd - Check TypeScript type definitions