tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es5",
    "module": "es2015",
    "typeRoots": ["node_modules/@types"],
    "lib": ["es2017", "dom"],
    "skipLibCheck": true,
    "skipDefaultLibCheck": true,
    "baseUrl": ".",
    "paths": {
      "@ne/ngrx-exceptions": ["libs/ngrx-exceptions/src/index.ts"],
      "@ninthdegree/exceptions-ui": ["libs/exceptions-ui/src/index.ts"],
      "core-js/es7/reflect": [
        "node_modules/core-js/proposals/reflect-metadata"
      ],
      "core-js/es6/*": ["node_modules/core-js/es/*"]
    }
  },
  "exclude": ["node_modules", "tmp"]
}