function isBoolean Usageimport { isBoolean } from "node:util"; DeprecatedSince v4.0.0 - Use typeof value === 'boolean' instead. isBoolean(object: unknown): object is boolean Returns true if the given object is a Boolean. Otherwise, returns false. Returns true if the given object is a Boolean. Otherwise, returns false. const util = require('node:util'); util.isBoolean(1); // Returns: false util.isBoolean(0); // Returns: false util.isBoolean(false); // Returns: true Parameters object: unknown Return Type object is boolean