tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "lib": ["esnext", "es6", "dom"],
    "moduleResolution": "node",
    "esModuleInterop": true,
    "noImplicitAny": false,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "incremental": true,
    "strictNullChecks": true,
    "strictFunctionTypes": false,
    "sourceMap": true,
    "strict" :true,
    "skipLibCheck": true,
    "removeComments": true,
    "outDir": "dist/",
    "baseUrl": ".",
    "resolveJsonModule": true,
    "allowJs": true,
    "forceConsistentCasingInFileNames": true,
    "paths": {
      "@/*": ["src/*"]
    },
    "types" : ["jest", "node"],
    "typeRoots": ["src/types", "node_modules/@types"]
  },
  "include": ["src/**/*"],
  "exclude" : ["_scratch", "dist", "node_modules"],
  "watchOptions": {
    "excludeDirectories": ["node_modules", "dist"]
  }
}