TypeError: transformerFn is not a function

[LotuxPunk]

Hello ! I'm trying to use ts-patch to replace ttypescript but I'm facing some issues.

I'm using the first method describe in your documentation:

tspc --build

But unfortunately, I get those logs as a result:

> nx run @icure/typescript-common:build

evalmachine.<anonymous>:118235
              throw e;
              ^
TypeError: transformerFn is not a function
    at tspWrappedFactory (evalmachine.<anonymous>:205:39)
    at evalmachine.<anonymous>:110260:33
    at evalmachine.<anonymous>:110347:61
    at Array.map (<anonymous>)
    at transformNodes (evalmachine.<anonymous>:110347:50)
    at emitJsFileOrBundle (evalmachine.<anonymous>:110945:26)
    at emitSourceFileOrBundle (evalmachine.<anonymous>:110880:7)
    at forEachEmittedFile (evalmachine.<anonymous>:110634:26)
    at emitFiles (evalmachine.<anonymous>:110854:5)
    at emitWorker (evalmachine.<anonymous>:118161:30)
Node.js v18.16.0

My tsconfig.json:

{
  "compilerOptions": {
    // ...
    "outDir": "./dist",
    "lib": ["es2017", "es6", "es5", "dom"],
    "plugins": [
      {
        "transform": "@automapper/classes/transformer-plugin",
        "after": true,
        "modelFileNameSuffix": [
          ".model.ts"
        ]
      }
    ]
  },
  "include": ["./index.ts", "./src/**/*"],
  "exclude": ["dist", "node_modules", "test"],
  "filesGlob": ["./**/*.ts"],
}

Typescript version is 5.1.3, yarn version is 3.6.0 and ts-patch is 3.0.0.

Thanks in advance for your help !

[nonara]

I had a look, and I discovered the issue was in the transformer.

I made a PR for the library, which you can track here:

• fix(classes): fixed transformer ttypescript / ts-patch support nartc/mapper#556

There are more details on what's going on there, also.

As a side note, you'll need to use different config when it gets merged, so be sure to check the example I wrote in the readme

[LotuxPunk]

Thanks very much for the quick fix ! 🙏