tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "declaration": true,
    "removeComments": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "target": "ESNext",
    "sourceMap": true,
    "outDir": "./dist",
    "baseUrl": "./",
    "incremental": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": false,
    "allowJs": false,
    "checkJs": false,
    "importHelpers": true,
    "importsNotUsedAsValues": "remove",
    "downlevelIteration": true,
    "isolatedModules": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": false,
    "noImplicitThis": true,
    "useUnknownInCatchVariables": false,
    "alwaysStrict": true,
    "exactOptionalPropertyTypes": false,
    "noImplicitReturns": true,
    "noUncheckedIndexedAccess": true,
    "esModuleInterop": true,
    "types": ["node", "jest", "express"],
    "typeRoots": ["src/@types", "node_modules/@types"]
  }
}