useESM option

The useESM option allows ts-jest to transform codes to ESM syntax if possible.

The default value is false, ts-jest will transform codes to CommonJS syntax.

Examples

// jest.config.js
module.exports = {
  // [...]
  globals: {
    'ts-jest': {
      useESM: true,
    },
  },
}

// package.json
{
  // [...]
  "jest": {
    "globals": {
      "ts-jest": {
        "useESM": true
      }
    }
  }
}