has.js
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var baseGet = require('../internal/baseGet'),
baseSlice = require('../internal/baseSlice'),
isKey = require('../internal/isKey'),
last = require('../array/last'),
toPath = require('../internal/toPath');
/** Used for native method references. */
var objectProto = Object.prototype;
/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;
/**
* Checks if `path` is a direct property.
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path to check.
* @returns {boolean} Returns `true` if `path` is a direct property, else `false`.
* @example
*
* var object = { 'a': { 'b': { 'c': 3 } } };
*
* _.has(object, 'a');
* // => true
*
* _.has(object, 'a.b.c');
* // => true
*
* _.has(object, ['a', 'b', 'c']);
* // => true
*/
function has(object, path) {
if (object == null) {
return false;
}
var result = hasOwnProperty.call(object, path);
if (!result && !isKey(path)) {
path = toPath(path);
object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));
path = last(path);
result = object != null && hasOwnProperty.call(object, path);
}
return result;
}
module.exports = has;