Babylon.js/serializers/tsconfig.json

{
  "compilerOptions": {
      "experimentalDecorators": true,
      "module": "commonjs",
      "target": "es5",
      "moduleResolution": "node",
      "noImplicitAny": true,
      "noImplicitReturns": true,
      "noImplicitThis": true,
      "noUnusedLocals": true,
      "strictNullChecks": true,
      "declaration": true,
      "sourceMap": true,
      "lib": [
          "es5",
          "dom",
          "es2015.promise",
          "es2015.collection",
          "es2015.iterable"
      ],
      "skipDefaultLibCheck": true,
      "skipLibCheck": true,
      "baseUrl": "./src/",
      "rootDir": "./src/",
      "paths": {
          "babylonjs": [
            "../../dist/preview release/babylon.module.d.ts",
          ],
          "babylonjs-gltf2interface": [
            "../../dist/preview release/glTF2Interface/babylon.glTF2Interface.d.ts"
          ],
      },
      "outDir": "./build"
  }
}