[BUG] Namespace 'ts' has no exported member 'TypeMapper'

[samchon]

The type ts.TypeMapper is @internal tagged type.

Therefore, when install ts-runtime-checks in the user side, it becomes a compiler error like bleow:

node_modules/ts-runtime-checks/dist/gen/validators/genValidator.d.ts:6:16 - error TS2694: Namespace 'ts' has no exported member 'TypeMapper'.

[GoogleFeud]

This library uses @types/ts-expose-internals in order to use internal types, you can fix this in two ways:

• Add "@types/ts-expose-internals": "npm:ts-expose-internals@^5.1.5" to your dev dependencies
• Set the skipLibCheck option in the tsconfig.json file to true

Hope this helps!

[samchon]

I mean that this bug occured when installing and using ts-runtime-checks.

It should be fixed for users.

[GoogleFeud]

The transformer has to use these internal properties/methods in order to function so there isn't much that can be done except using @ts-ignore instead of the package.

Setting skipLibCheck to true is almost always a good idea, anyways.