tsconfig.json

{
  "compilerOptions": {
    "target": "es2018",                                
    "module": "commonjs",                           
    "lib": ["es2018","es2017", "es7", "es6","es5"],
    // "baseUrl": "src",
    // "paths": {
      // "@/*": ["*"]
    // },
    "outDir": "./dist",                                
    "declaration": true,                       
    "strict": true, 
    // "esModuleInterop": true,                         
    // "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "strictPropertyInitialization": false,
    // "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    // "emitDecoratorMetadata": true,
    // "isolatedModules": true,
    "skipLibCheck": true,
    // "moduleResolution": "Node",
    // "noImplicitAny": true,
    // "sourceMap": true,
    // "noFallthroughCasesInSwitch": true, 
  },
  "include": ["src/**/*", "src/test.ts"],
  // "exclude": ["node_modules", "dist"]
}