tsconfig-base.json

{
  "compilerOptions": {
    "target": "ESNext",
    "useDefineForClassFields": true,
    "module": "ESNext",
    "lib": ["ESNext", "DOM"],
    "moduleResolution": "bundler",
    "strict": true,
    "sourceMap": true,
    "resolveJsonModule": true,
    "esModuleInterop": true,
    "noEmit": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,

    "isolatedModules": true,
    "strictPropertyInitialization": false,
    "noImplicitAny": true,
    "removeComments": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "downlevelIteration": true,

    "declaration": true,
    "inlineSources": true,
    "skipLibCheck": true // fix for lodash - TS2428: All declarations of 'WeakMap' must have identical type parameters. You can try to remove it from time to time.
  }
}