tsconfig.json

{
  "compilerOptions": {
    // Can be overwritten for web projects in a local tsconfig.json
    "module": "commonjs",
    "moduleResolution": "node",

    // Common typescript transpilation options
    "target": "es2017",
    "lib": ["es2017"],
    "outDir": "./dist",

    // Use `tslib` for helper methods
    "importHelpers": true,

    // Never emit code with errors.
    "noEmitOnError": true,

    // Source maps are useful when tracing running code
    "sourceMap": true,

    // These values should not be modified on a per-project basis, they enforce quality.
    "allowSyntheticDefaultImports": true,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "preserveConstEnums": true,
    "strictNullChecks": true,


    "baseUrl": "./src",
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  }
}