tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "alwaysStrict": true,
    "assumeChangesOnlyAffectDirectDependencies": true,
    "emitDecoratorMetadata": true,
    "esModuleInterop": true,
    "exactOptionalPropertyTypes": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importsNotUsedAsValues": "remove",
    "isolatedModules": true,
    "lib": [
      "esnext",
      "dom"
    ],
    "module": "commonjs",
    "moduleResolution": "node",
    "noErrorTruncation": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "preserveConstEnums": true,
    "pretty": true,
    "removeComments": true,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "sourceMap": false,
    "strict": true,
    "target": "es5",
    "types": [
      "mocha",
      "reflect-metadata",
      "node"
    ]
  },
  "exclude": [
    "node_modules"
  ]
}