TypeScript with exposed internal definitions and some private methods for type checking.

When you install the package, it will look for your local version of TypeScript. It will then make a copy of your version in its own location, apply the patches and re-export the patched version. Then you can import the patched version and enjoy your unleashed version of TypeScript while keeping your original version intact.

1. Removes all @internal tags which allows you to access internal types, classes, properties and methods with their declarations.

2. Export some very useful private methods from the TypeChecker:

   function isTypeSubtypeOf(source: Type, target: Type): boolean;
   function isTypeIdenticalTo(source: Type, target: Type): boolean;
   function isTypeDerivedFrom(source: Type, target: Type): boolean;
   function isTypeAssignableTo(source: Type, target: Type): boolean;
   function isTypeComparableTo(source: Type, target: Type): boolean;
   function areTypesComparable(source: Type, target: Type): boolean;

   And many other things...

   interface OptionsNameMap;
   
   function getOptionsNameMap(): OptionsNameMap;
   
   interface CommandLineOptionOfCustomType;
   interface CommandLineOptionOfStringType;
   interface CommandLineOptionOfNumberType;
   interface CommandLineOptionOfBooleanType;
   interface TsConfigOnlyOption;
   interface CommandLineOptionOfListType;
   
   type CommandLineOption;
   

pnpm add -D typescript unleashed-typescript

import ts from 'unleashed-typescript';

// Use ts as usual.

With no arguments unleashed-typescript patches your current version of typescript if it is not already patched. If you want to sync your version after an update you can use the --force-patch option.

Usage: pnpm unleashed-typescript [options]

Options:
  --unpatch       Revert the patch (useful before a build/publish).
  --force-patch   Force patch from your current typescript version.

unleashed-typescript is a combination of the alternatives listed below. But instead of maintaining an up-to-date build of TypeScript we use your locally installed version.

• byots Bring your own TypeScript with more internal definitions
• ts-expose-internals Expose TypeScript internal types by simply adding a development dependency

• tsd-typescript TypeScript with some extras for type-checking.

See CONTRIBUTING.md