tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "alwaysStrict": true,
    "declaration": true,
    "downlevelIteration": true,
    "importHelpers": false,
    "sourceMap": true,
    "inlineSources": true,
    "lib": ["es2020"],
    "module": "commonjs",
    "moduleResolution": "node",
    "noEmit": false,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "outDir": "./build/",
    "preserveConstEnums": true,
    "removeComments": false,
    "rootDir": "./src/",
    "strict": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "target": "es2016",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "declarationMap": true,
    "resolveJsonModule": true
  },
  "exclude": ["node_modules", "build"]
}