tsconfig.json

{
  "compilerOptions": {
    "target": "es2016",                          
    "module": "commonjs",
    "moduleResolution": "node",                     
    "declaration": true,                   
    "outDir": "lib/",                     
    "removeComments": true,                                                  
    "forceConsistentCasingInFileNames": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "strict": true,                                     
    "noImplicitAny": true,                           
    "strictNullChecks": true,                        
    "strictFunctionTypes": true,                     
    "strictBindCallApply": true,                     
    "strictPropertyInitialization": true,            
    "noImplicitThis": true,             
    "esModuleInterop": true,             
    "alwaysStrict": true,                            
    "noUnusedLocals": true,                          
    "noUnusedParameters": true,                      
    "noImplicitReturns": true,                      
    "noFallthroughCasesInSwitch": true,    
  },
  "include": ["src/**/*"],
  "exclude": ["node_modules", "src/__tests__/**/*"],
}