How to make compilation error in transformer?

[samchon]

Hello, I'm developing a transformer based library typia.

In nowadays, I hope to make compilation error in the typia side. Currently, I'm using console.error() function, or throw exception halting entire tsc --watch command. because I don't know how to make compilation error in my program side yet. If you know how, and just give me a keyword or show me an example code, it would be great helpful for me. Thanks for reading.

Hope to make a compilation error like src/index.ts:9:7 - error TS2322: Type 'string' is not assignable to type 'number' word.

[nonara]

Hello! Those errors are called Diagnostics.

Tsp gives you a helper utility called addDiagnostic, which should do what you need.

[samchon]

I regret that I should have read the README documentat more carefully.

Anyway, whenever using ts-patch, I always thought this library has great knowhows. Even in this case, I am once again amazed at the placement and discernment of the ts-patch features. I just traveled TypeScript API only and have experimented features of it, so I once gave up and planned to detour this problem just by transforming to weird statement like below.

This library is amazing. Nice to ask here.

const TYPIA_TRANSFORMATION_ERROR: number = "typia.protobuf.encode<T>() supports only a sole and static object type"`;