tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "declaration": true,
    "removeComments": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    //"target": "ES2021",
    "target": "ES6",
    "strict": true,
    "esModuleInterop": true,
    //esModuleInterop까지 새로 추가
    "sourceMap": true,
    "outDir": "./dist",
    "baseUrl": "./",
    "incremental": true,
    "skipLibCheck": true,
    "strictNullChecks": false,
    "noImplicitAny": false,
    "strictBindCallApply": false,
    //"forceConsistentCasingInFileNames": false,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": false
  },
  //새로 추가
  "include": ["src/**/*"],
  "exclude": ["node_modules"]
}