l-assiette/tsconfig.json

{
    "compilerOptions": {
      // this aligns with Vue's browser support
      "target": "es6",
      // this enables stricter inference for data properties on `this`
      "strict": true,
      // if using webpack 2+ or rollup, to leverage tree shaking:
      "module": "es2015",
      "moduleResolution": "node",
      "types": [
        "node"
      ],
      "typeRoots": [
        "node_modules/@types"
      ]
    }
  }