tsconfig.json

{
  "compilerOptions": {
    "lib": ["es5", "es6", "dom"],
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "outDir": "./build",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "sourceMap": true,
    "strict": true, // Force some below options to be true (we know it's redundant)
    "alwaysStrict": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": false, // Fixes typeorm models issues with strict
    "esModuleInterop": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noFallthroughCasesInSwitch": true,
    "noUnusedLocals": true,
    "allowUnreachableCode": false,
    "forceConsistentCasingInFileNames": true,
    "newLine": "lf",
    "typeRoots": ["@types", "./node_modules/@types"],
    "resolveJsonModule": true
  },
  "exclude": ["src/**/*.test.ts"]
}