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isBoolean.js
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define(['../internal/isObjectLike'], function(isObjectLike) {
/** `Object#toString` result references. */
var boolTag = '[object Boolean]';
/** Used for native method references. */
var objectProto = Object.prototype;
/**
* Used to resolve the `toStringTag` of values.
* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
* for more details.
*/
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) || false;
}
return isBoolean;
});