module.isBuiltin(moduleName)
- 
moduleName<string> 模块名称¥ moduleName<string> name of the module
- 
返回:<boolean> 如果模块是内置的,则返回 true,否则返回 false ¥Returns: <boolean> returns true if the module is builtin else returns false 
import { isBuiltin } from 'node:module';
isBuiltin('node:fs'); // true
isBuiltin('fs'); // true
isBuiltin('wss'); // false