tsconfig.client.test(ts).json

{
  "compilerOptions": {
    "sourceMap": true,
    "rootDir": "./client",
    "module": "commonjs",
    "outDir": ".tmp/test"
  },
  "moduleResolution": "node",
  "typeRoots": [
    "node_modules/@types"
  ],
  "filesGlob": [
    "client/{app,components}/**/*.{spec,mock}.ts",
    "client/test_typings/**/*.d.ts"
  ]
}