diff options
Diffstat (limited to 'node_modules/lodash/isPlainObject.js')
-rw-r--r-- | node_modules/lodash/isPlainObject.js | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/node_modules/lodash/isPlainObject.js b/node_modules/lodash/isPlainObject.js new file mode 100644 index 0000000..2387373 --- /dev/null +++ b/node_modules/lodash/isPlainObject.js @@ -0,0 +1,62 @@ +var baseGetTag = require('./_baseGetTag'), + getPrototype = require('./_getPrototype'), + isObjectLike = require('./isObjectLike'); + +/** `Object#toString` result references. */ +var objectTag = '[object Object]'; + +/** Used for built-in method references. */ +var funcProto = Function.prototype, + objectProto = Object.prototype; + +/** Used to resolve the decompiled source of functions. */ +var funcToString = funcProto.toString; + +/** Used to check objects for own properties. */ +var hasOwnProperty = objectProto.hasOwnProperty; + +/** Used to infer the `Object` constructor. */ +var objectCtorString = funcToString.call(Object); + +/** + * Checks if `value` is a plain object, that is, an object created by the + * `Object` constructor or one with a `[[Prototype]]` of `null`. + * + * @static + * @memberOf _ + * @since 0.8.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * _.isPlainObject(new Foo); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + * + * _.isPlainObject(Object.create(null)); + * // => true + */ +function isPlainObject(value) { + if (!isObjectLike(value) || baseGetTag(value) != objectTag) { + return false; + } + var proto = getPrototype(value); + if (proto === null) { + return true; + } + var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; + return typeof Ctor == 'function' && Ctor instanceof Ctor && + funcToString.call(Ctor) == objectCtorString; +} + +module.exports = isPlainObject; |