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-/**
- * lodash (Custom Build) <https://lodash.com/>
- * Build: `lodash modularize exports="npm" -o ./`
- * Copyright jQuery Foundation and other contributors <https://jquery.org/>
- * Released under MIT license <https://lodash.com/license>
- * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
- */
-
-/** Used as references for various `Number` constants. */
-var MAX_SAFE_INTEGER = 9007199254740991;
-
-/** `Object#toString` result references. */
-var argsTag = '[object Arguments]',
- funcTag = '[object Function]',
- genTag = '[object GeneratorFunction]',
- stringTag = '[object String]';
-
-/** Used to detect unsigned integer values. */
-var reIsUint = /^(?:0|[1-9]\d*)$/;
-
-/**
- * The base implementation of `_.times` without support for iteratee shorthands
- * or max array length checks.
- *
- * @private
- * @param {number} n The number of times to invoke `iteratee`.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Array} Returns the array of results.
- */
-function baseTimes(n, iteratee) {
- var index = -1,
- result = Array(n);
-
- while (++index < n) {
- result[index] = iteratee(index);
- }
- return result;
-}
-
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/** Used to check objects for own properties. */
-var hasOwnProperty = objectProto.hasOwnProperty;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
-/** Built-in value references. */
-var propertyIsEnumerable = objectProto.propertyIsEnumerable;
-
-/* Built-in method references for those with the same name as other `lodash` methods. */
-var nativeGetPrototype = Object.getPrototypeOf,
- nativeKeys = Object.keys;
-
-/**
- * The base implementation of `_.has` without support for deep paths.
- *
- * @private
- * @param {Object} object The object to query.
- * @param {Array|string} key The key to check.
- * @returns {boolean} Returns `true` if `key` exists, else `false`.
- */
-function baseHas(object, key) {
- // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,
- // that are composed entirely of index properties, return `false` for
- // `hasOwnProperty` checks of them.
- return hasOwnProperty.call(object, key) ||
- (typeof object == 'object' && key in object && getPrototype(object) === null);
-}
-
-/**
- * The base implementation of `_.keys` which doesn't skip the constructor
- * property of prototypes or treat sparse arrays as dense.
- *
- * @private
- * @param {Object} object The object to query.
- * @returns {Array} Returns the array of property names.
- */
-function baseKeys(object) {
- return nativeKeys(Object(object));
-}
-
-/**
- * The base implementation of `_.property` without support for deep paths.
- *
- * @private
- * @param {string} key The key of the property to get.
- * @returns {Function} Returns the new accessor function.
- */
-function baseProperty(key) {
- return function(object) {
- return object == null ? undefined : object[key];
- };
-}
-
-/**
- * Gets the "length" property value of `object`.
- *
- * **Note:** This function is used to avoid a
- * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects
- * Safari on at least iOS 8.1-8.3 ARM64.
- *
- * @private
- * @param {Object} object The object to query.
- * @returns {*} Returns the "length" value.
- */
-var getLength = baseProperty('length');
-
-/**
- * Gets the `[[Prototype]]` of `value`.
- *
- * @private
- * @param {*} value The value to query.
- * @returns {null|Object} Returns the `[[Prototype]]`.
- */
-function getPrototype(value) {
- return nativeGetPrototype(Object(value));
-}
-
-/**
- * Creates an array of index keys for `object` values of arrays,
- * `arguments` objects, and strings, otherwise `null` is returned.
- *
- * @private
- * @param {Object} object The object to query.
- * @returns {Array|null} Returns index keys, else `null`.
- */
-function indexKeys(object) {
- var length = object ? object.length : undefined;
- if (isLength(length) &&
- (isArray(object) || isString(object) || isArguments(object))) {
- return baseTimes(length, String);
- }
- return null;
-}
-
-/**
- * Checks if `value` is a valid array-like index.
- *
- * @private
- * @param {*} value The value to check.
- * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
- * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
- */
-function isIndex(value, length) {
- length = length == null ? MAX_SAFE_INTEGER : length;
- return !!length &&
- (typeof value == 'number' || reIsUint.test(value)) &&
- (value > -1 && value % 1 == 0 && value < length);
-}
-
-/**
- * Checks if `value` is likely a prototype object.
- *
- * @private
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
- */
-function isPrototype(value) {
- var Ctor = value && value.constructor,
- proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
-
- return value === proto;
-}
-
-/**
- * Checks if `value` is likely an `arguments` object.
- *
- * @static
- * @memberOf _
- * @since 0.1.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- * else `false`.
- * @example
- *
- * _.isArguments(function() { return arguments; }());
- * // => true
- *
- * _.isArguments([1, 2, 3]);
- * // => false
- */
-function isArguments(value) {
- // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
- return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
- (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
-}
-
-/**
- * Checks if `value` is classified as an `Array` object.
- *
- * @static
- * @memberOf _
- * @since 0.1.0
- * @type {Function}
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- * else `false`.
- * @example
- *
- * _.isArray([1, 2, 3]);
- * // => true
- *
- * _.isArray(document.body.children);
- * // => false
- *
- * _.isArray('abc');
- * // => false
- *
- * _.isArray(_.noop);
- * // => false
- */
-var isArray = Array.isArray;
-
-/**
- * Checks if `value` is array-like. A value is considered array-like if it's
- * not a function and has a `value.length` that's an integer greater than or
- * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
- * @example
- *
- * _.isArrayLike([1, 2, 3]);
- * // => true
- *
- * _.isArrayLike(document.body.children);
- * // => true
- *
- * _.isArrayLike('abc');
- * // => true
- *
- * _.isArrayLike(_.noop);
- * // => false
- */
-function isArrayLike(value) {
- return value != null && isLength(getLength(value)) && !isFunction(value);
-}
-
-/**
- * This method is like `_.isArrayLike` except that it also checks if `value`
- * is an object.
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is an array-like object,
- * else `false`.
- * @example
- *
- * _.isArrayLikeObject([1, 2, 3]);
- * // => true
- *
- * _.isArrayLikeObject(document.body.children);
- * // => true
- *
- * _.isArrayLikeObject('abc');
- * // => false
- *
- * _.isArrayLikeObject(_.noop);
- * // => false
- */
-function isArrayLikeObject(value) {
- return isObjectLike(value) && isArrayLike(value);
-}
-
-/**
- * Checks if `value` is classified as a `Function` object.
- *
- * @static
- * @memberOf _
- * @since 0.1.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- * else `false`.
- * @example
- *
- * _.isFunction(_);
- * // => true
- *
- * _.isFunction(/abc/);
- * // => false
- */
-function isFunction(value) {
- // The use of `Object#toString` avoids issues with the `typeof` operator
- // in Safari 8 which returns 'object' for typed array and weak map constructors,
- // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.
- var tag = isObject(value) ? objectToString.call(value) : '';
- return tag == funcTag || tag == genTag;
-}
-
-/**
- * Checks if `value` is a valid array-like length.
- *
- * **Note:** This function is loosely based on
- * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is a valid length,
- * else `false`.
- * @example
- *
- * _.isLength(3);
- * // => true
- *
- * _.isLength(Number.MIN_VALUE);
- * // => false
- *
- * _.isLength(Infinity);
- * // => false
- *
- * _.isLength('3');
- * // => false
- */
-function isLength(value) {
- return typeof value == 'number' &&
- value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
-}
-
-/**
- * Checks if `value` is the
- * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
- * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
- *
- * @static
- * @memberOf _
- * @since 0.1.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is an object, else `false`.
- * @example
- *
- * _.isObject({});
- * // => true
- *
- * _.isObject([1, 2, 3]);
- * // => true
- *
- * _.isObject(_.noop);
- * // => true
- *
- * _.isObject(null);
- * // => false
- */
-function isObject(value) {
- var type = typeof value;
- return !!value && (type == 'object' || type == 'function');
-}
-
-/**
- * Checks if `value` is object-like. A value is object-like if it's not `null`
- * and has a `typeof` result of "object".
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
- * @example
- *
- * _.isObjectLike({});
- * // => true
- *
- * _.isObjectLike([1, 2, 3]);
- * // => true
- *
- * _.isObjectLike(_.noop);
- * // => false
- *
- * _.isObjectLike(null);
- * // => false
- */
-function isObjectLike(value) {
- return !!value && typeof value == 'object';
-}
-
-/**
- * Checks if `value` is classified as a `String` primitive or object.
- *
- * @static
- * @since 0.1.0
- * @memberOf _
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- * else `false`.
- * @example
- *
- * _.isString('abc');
- * // => true
- *
- * _.isString(1);
- * // => false
- */
-function isString(value) {
- return typeof value == 'string' ||
- (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);
-}
-
-/**
- * Creates an array of the own enumerable property names of `object`.
- *
- * **Note:** Non-object values are coerced to objects. See the
- * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
- * for more details.
- *
- * @static
- * @since 0.1.0
- * @memberOf _
- * @category Object
- * @param {Object} object The object to query.
- * @returns {Array} Returns the array of property names.
- * @example
- *
- * function Foo() {
- * this.a = 1;
- * this.b = 2;
- * }
- *
- * Foo.prototype.c = 3;
- *
- * _.keys(new Foo);
- * // => ['a', 'b'] (iteration order is not guaranteed)
- *
- * _.keys('hi');
- * // => ['0', '1']
- */
-function keys(object) {
- var isProto = isPrototype(object);
- if (!(isProto || isArrayLike(object))) {
- return baseKeys(object);
- }
- var indexes = indexKeys(object),
- skipIndexes = !!indexes,
- result = indexes || [],
- length = result.length;
-
- for (var key in object) {
- if (baseHas(object, key) &&
- !(skipIndexes && (key == 'length' || isIndex(key, length))) &&
- !(isProto && key == 'constructor')) {
- result.push(key);
- }
- }
- return result;
-}
-
-module.exports = keys;