ts-jest (typescript Compiler) [...]. default is not a constructor

Question

i’m trying to use ts-jest in a Vue project to Transform some ". ts" files in "js" so jest can test them. My problem is: typescript Compiler Give me this error: _className.default is not a constructor when trying to mount a Component for testing.

I have two files. In one of them I export a class like this:

class myClass {
  //code
}
export default myClass;

The other file has:

import myClass from "path";

class anotherClass {
  constructor() {
     const foo = new myClass();
  }
}

My .tsconfig file:

{
  "compilerOptions": {
    "target": "ES2019",
    "module": "CommonJS",
    "strict": true,
    "jsx": "preserve",
    "importHelpers": true,
    "moduleResolution": "node",
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "resolveJsonModule": true,
    "baseUrl": ".",
    "types": ["webpack-env"],
    "paths": {
      "@/*": ["src/*"]
    },
    "lib": ["esnext", "dom", "dom.iterable", "scripthost"]
  },
  "include": [
    "src/**/*.ts",
    "src/**/*.tsx",
    "src/**/*.vue",
    "tests/**/*.ts",
    "tests/**/*.tsx",
    "src/main.js",
    "src/acl.js"
  ],
  "exclude": ["node_modules"]
}

My jest config file:

module.exports = {
  moduleFileExtensions: ["js", "json", "ts", "vue"],
  transform: {
    ".*\\.(vue)$": "vue-jest",
    ".*\\.(ts)$": "ts-jest",
    ".*\\.(js)$": "babel-jest",
  },
  moduleNameMapper: {
    "^@/(.*)$": "<rootDir>/src/$1",
    "\\.(scss|sass|css)$": "identity-obj-proxy",
  },
  coveragePathIgnorePatterns: [
    "/node_modules/"
  ],
};

I can’t figure out what is happening.