관리-도구

편집 파일: isBoolean.js

var isObjectLike = require('../internal/isObjectLike'); /** `Object#toString` result references. */ var boolTag = '[object Boolean]'; /** Used for native method references. */ var objectProto = Object.prototype; /** * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) * of values. */ var objToString = objectProto.toString; /** * Checks if `value` is classified as a boolean primitive or object. * * @static * @memberOf _ * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. * @example * * _.isBoolean(false); * // => true * * _.isBoolean(null); * // => false */ function isBoolean(value) { return value === true || value === false || (isObjectLike(value) && objToString.call(value) == boolTag); } module.exports = isBoolean;