using typescript paths in @angular/cli projects

tsconfig.app.json

{
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "@utilities/*": ["./app/utilities/*"]
    },
    "outDir": "../out-tsc/app",
    "module": "es2015",
    "types": []
  },
  "exclude": ["test.ts", "**/*.spec.ts"]
}

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "@utilities/*": ["./src/app/utilities/*"]
    },
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  }
}