@risan/is-empty
Version:
Check if a value is empty or not.
1,323 lines (1,135 loc) • 43.1 kB
JavaScript
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.isEmpty = factory());
}(this, (function () { 'use strict';
// 7.2.1 RequireObjectCoercible(argument)
var _defined = function (it) {
if (it == undefined) throw TypeError("Can't call method on " + it);
return it;
};
// 7.1.13 ToObject(argument)
var _toObject = function (it) {
return Object(_defined(it));
};
var hasOwnProperty = {}.hasOwnProperty;
var _has = function (it, key) {
return hasOwnProperty.call(it, key);
};
var toString = {}.toString;
var _cof = function (it) {
return toString.call(it).slice(8, -1);
};
// fallback for non-array-like ES3 and non-enumerable old V8 strings
// eslint-disable-next-line no-prototype-builtins
var _iobject = Object('z').propertyIsEnumerable(0) ? Object : function (it) {
return _cof(it) == 'String' ? it.split('') : Object(it);
};
// to indexed object, toObject with fallback for non-array-like ES3 strings
var _toIobject = function (it) {
return _iobject(_defined(it));
};
// 7.1.4 ToInteger
var ceil = Math.ceil;
var floor = Math.floor;
var _toInteger = function (it) {
return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
};
// 7.1.15 ToLength
var min = Math.min;
var _toLength = function (it) {
return it > 0 ? min(_toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
};
var max = Math.max;
var min$1 = Math.min;
var _toAbsoluteIndex = function (index, length) {
index = _toInteger(index);
return index < 0 ? max(index + length, 0) : min$1(index, length);
};
// false -> Array#indexOf
// true -> Array#includes
var _arrayIncludes = function (IS_INCLUDES) {
return function ($this, el, fromIndex) {
var O = _toIobject($this);
var length = _toLength(O.length);
var index = _toAbsoluteIndex(fromIndex, length);
var value;
// Array#includes uses SameValueZero equality algorithm
// eslint-disable-next-line no-self-compare
if (IS_INCLUDES && el != el) while (length > index) {
value = O[index++];
// eslint-disable-next-line no-self-compare
if (value != value) return true;
// Array#indexOf ignores holes, Array#includes - not
} else for (;length > index; index++) if (IS_INCLUDES || index in O) {
if (O[index] === el) return IS_INCLUDES || index || 0;
} return !IS_INCLUDES && -1;
};
};
function createCommonjsModule(fn, module) {
return module = { exports: {} }, fn(module, module.exports), module.exports;
}
var _core = createCommonjsModule(function (module) {
var core = module.exports = { version: '2.5.7' };
if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef
});
var _core_1 = _core.version;
var _global = createCommonjsModule(function (module) {
// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global = module.exports = typeof window != 'undefined' && window.Math == Math
? window : typeof self != 'undefined' && self.Math == Math ? self
// eslint-disable-next-line no-new-func
: Function('return this')();
if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef
});
var _library = false;
var _shared = createCommonjsModule(function (module) {
var SHARED = '__core-js_shared__';
var store = _global[SHARED] || (_global[SHARED] = {});
(module.exports = function (key, value) {
return store[key] || (store[key] = value !== undefined ? value : {});
})('versions', []).push({
version: _core.version,
mode: _library ? 'pure' : 'global',
copyright: '© 2018 Denis Pushkarev (zloirock.ru)'
});
});
var id = 0;
var px = Math.random();
var _uid = function (key) {
return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
};
var shared = _shared('keys');
var _sharedKey = function (key) {
return shared[key] || (shared[key] = _uid(key));
};
var arrayIndexOf = _arrayIncludes(false);
var IE_PROTO = _sharedKey('IE_PROTO');
var _objectKeysInternal = function (object, names) {
var O = _toIobject(object);
var i = 0;
var result = [];
var key;
for (key in O) if (key != IE_PROTO) _has(O, key) && result.push(key);
// Don't enum bug & hidden keys
while (names.length > i) if (_has(O, key = names[i++])) {
~arrayIndexOf(result, key) || result.push(key);
}
return result;
};
// IE 8- don't enum bug keys
var _enumBugKeys = (
'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
).split(',');
// 19.1.2.14 / 15.2.3.14 Object.keys(O)
var _objectKeys = Object.keys || function keys(O) {
return _objectKeysInternal(O, _enumBugKeys);
};
var _isObject = function (it) {
return typeof it === 'object' ? it !== null : typeof it === 'function';
};
var _anObject = function (it) {
if (!_isObject(it)) throw TypeError(it + ' is not an object!');
return it;
};
var _fails = function (exec) {
try {
return !!exec();
} catch (e) {
return true;
}
};
// Thank's IE8 for his funny defineProperty
var _descriptors = !_fails(function () {
return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
});
var document = _global.document;
// typeof document.createElement is 'object' in old IE
var is = _isObject(document) && _isObject(document.createElement);
var _domCreate = function (it) {
return is ? document.createElement(it) : {};
};
var _ie8DomDefine = !_descriptors && !_fails(function () {
return Object.defineProperty(_domCreate('div'), 'a', { get: function () { return 7; } }).a != 7;
});
// 7.1.1 ToPrimitive(input [, PreferredType])
// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
var _toPrimitive = function (it, S) {
if (!_isObject(it)) return it;
var fn, val;
if (S && typeof (fn = it.toString) == 'function' && !_isObject(val = fn.call(it))) return val;
if (typeof (fn = it.valueOf) == 'function' && !_isObject(val = fn.call(it))) return val;
if (!S && typeof (fn = it.toString) == 'function' && !_isObject(val = fn.call(it))) return val;
throw TypeError("Can't convert object to primitive value");
};
var dP = Object.defineProperty;
var f = _descriptors ? Object.defineProperty : function defineProperty(O, P, Attributes) {
_anObject(O);
P = _toPrimitive(P, true);
_anObject(Attributes);
if (_ie8DomDefine) try {
return dP(O, P, Attributes);
} catch (e) { /* empty */ }
if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
if ('value' in Attributes) O[P] = Attributes.value;
return O;
};
var _objectDp = {
f: f
};
var _propertyDesc = function (bitmap, value) {
return {
enumerable: !(bitmap & 1),
configurable: !(bitmap & 2),
writable: !(bitmap & 4),
value: value
};
};
var _hide = _descriptors ? function (object, key, value) {
return _objectDp.f(object, key, _propertyDesc(1, value));
} : function (object, key, value) {
object[key] = value;
return object;
};
var _redefine = createCommonjsModule(function (module) {
var SRC = _uid('src');
var TO_STRING = 'toString';
var $toString = Function[TO_STRING];
var TPL = ('' + $toString).split(TO_STRING);
_core.inspectSource = function (it) {
return $toString.call(it);
};
(module.exports = function (O, key, val, safe) {
var isFunction = typeof val == 'function';
if (isFunction) _has(val, 'name') || _hide(val, 'name', key);
if (O[key] === val) return;
if (isFunction) _has(val, SRC) || _hide(val, SRC, O[key] ? '' + O[key] : TPL.join(String(key)));
if (O === _global) {
O[key] = val;
} else if (!safe) {
delete O[key];
_hide(O, key, val);
} else if (O[key]) {
O[key] = val;
} else {
_hide(O, key, val);
}
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, TO_STRING, function toString() {
return typeof this == 'function' && this[SRC] || $toString.call(this);
});
});
var _aFunction = function (it) {
if (typeof it != 'function') throw TypeError(it + ' is not a function!');
return it;
};
// optional / simple context binding
var _ctx = function (fn, that, length) {
_aFunction(fn);
if (that === undefined) return fn;
switch (length) {
case 1: return function (a) {
return fn.call(that, a);
};
case 2: return function (a, b) {
return fn.call(that, a, b);
};
case 3: return function (a, b, c) {
return fn.call(that, a, b, c);
};
}
return function (/* ...args */) {
return fn.apply(that, arguments);
};
};
var PROTOTYPE = 'prototype';
var $export = function (type, name, source) {
var IS_FORCED = type & $export.F;
var IS_GLOBAL = type & $export.G;
var IS_STATIC = type & $export.S;
var IS_PROTO = type & $export.P;
var IS_BIND = type & $export.B;
var target = IS_GLOBAL ? _global : IS_STATIC ? _global[name] || (_global[name] = {}) : (_global[name] || {})[PROTOTYPE];
var exports = IS_GLOBAL ? _core : _core[name] || (_core[name] = {});
var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});
var key, own, out, exp;
if (IS_GLOBAL) source = name;
for (key in source) {
// contains in native
own = !IS_FORCED && target && target[key] !== undefined;
// export native or passed
out = (own ? target : source)[key];
// bind timers to global for call from export context
exp = IS_BIND && own ? _ctx(out, _global) : IS_PROTO && typeof out == 'function' ? _ctx(Function.call, out) : out;
// extend global
if (target) _redefine(target, key, out, type & $export.U);
// export
if (exports[key] != out) _hide(exports, key, exp);
if (IS_PROTO && expProto[key] != out) expProto[key] = out;
}
};
_global.core = _core;
// type bitmap
$export.F = 1; // forced
$export.G = 2; // global
$export.S = 4; // static
$export.P = 8; // proto
$export.B = 16; // bind
$export.W = 32; // wrap
$export.U = 64; // safe
$export.R = 128; // real proto method for `library`
var _export = $export;
// most Object methods by ES6 should accept primitives
var _objectSap = function (KEY, exec) {
var fn = (_core.Object || {})[KEY] || Object[KEY];
var exp = {};
exp[KEY] = exec(fn);
_export(_export.S + _export.F * _fails(function () { fn(1); }), 'Object', exp);
};
// 19.1.2.14 Object.keys(O)
_objectSap('keys', function () {
return function keys(it) {
return _objectKeys(_toObject(it));
};
});
var f$1 = {}.propertyIsEnumerable;
var _objectPie = {
f: f$1
};
var gOPD = Object.getOwnPropertyDescriptor;
var f$2 = _descriptors ? gOPD : function getOwnPropertyDescriptor(O, P) {
O = _toIobject(O);
P = _toPrimitive(P, true);
if (_ie8DomDefine) try {
return gOPD(O, P);
} catch (e) { /* empty */ }
if (_has(O, P)) return _propertyDesc(!_objectPie.f.call(O, P), O[P]);
};
var _objectGopd = {
f: f$2
};
// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */
var check = function (O, proto) {
_anObject(O);
if (!_isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!");
};
var _setProto = {
set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
function (test, buggy, set) {
try {
set = _ctx(Function.call, _objectGopd.f(Object.prototype, '__proto__').set, 2);
set(test, []);
buggy = !(test instanceof Array);
} catch (e) { buggy = true; }
return function setPrototypeOf(O, proto) {
check(O, proto);
if (buggy) O.__proto__ = proto;
else set(O, proto);
return O;
};
}({}, false) : undefined),
check: check
};
var setPrototypeOf = _setProto.set;
var _inheritIfRequired = function (that, target, C) {
var S = target.constructor;
var P;
if (S !== C && typeof S == 'function' && (P = S.prototype) !== C.prototype && _isObject(P) && setPrototypeOf) {
setPrototypeOf(that, P);
} return that;
};
// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)
var hiddenKeys = _enumBugKeys.concat('length', 'prototype');
var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
return _objectKeysInternal(O, hiddenKeys);
};
var _objectGopn = {
f: f$3
};
var _stringWs = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
'\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
var space = '[' + _stringWs + ']';
var non = '\u200b\u0085';
var ltrim = RegExp('^' + space + space + '*');
var rtrim = RegExp(space + space + '*$');
var exporter = function (KEY, exec, ALIAS) {
var exp = {};
var FORCE = _fails(function () {
return !!_stringWs[KEY]() || non[KEY]() != non;
});
var fn = exp[KEY] = FORCE ? exec(trim) : _stringWs[KEY];
if (ALIAS) exp[ALIAS] = fn;
_export(_export.P + _export.F * FORCE, 'String', exp);
};
// 1 -> String#trimLeft
// 2 -> String#trimRight
// 3 -> String#trim
var trim = exporter.trim = function (string, TYPE) {
string = String(_defined(string));
if (TYPE & 1) string = string.replace(ltrim, '');
if (TYPE & 2) string = string.replace(rtrim, '');
return string;
};
var _stringTrim = exporter;
var _objectDps = _descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
_anObject(O);
var keys = _objectKeys(Properties);
var length = keys.length;
var i = 0;
var P;
while (length > i) _objectDp.f(O, P = keys[i++], Properties[P]);
return O;
};
var document$1 = _global.document;
var _html = document$1 && document$1.documentElement;
// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
var IE_PROTO$1 = _sharedKey('IE_PROTO');
var Empty = function () { /* empty */ };
var PROTOTYPE$1 = 'prototype';
// Create object with fake `null` prototype: use iframe Object with cleared prototype
var createDict = function () {
// Thrash, waste and sodomy: IE GC bug
var iframe = _domCreate('iframe');
var i = _enumBugKeys.length;
var lt = '<';
var gt = '>';
var iframeDocument;
iframe.style.display = 'none';
_html.appendChild(iframe);
iframe.src = 'javascript:'; // eslint-disable-line no-script-url
// createDict = iframe.contentWindow.Object;
// html.removeChild(iframe);
iframeDocument = iframe.contentWindow.document;
iframeDocument.open();
iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);
iframeDocument.close();
createDict = iframeDocument.F;
while (i--) delete createDict[PROTOTYPE$1][_enumBugKeys[i]];
return createDict();
};
var _objectCreate = Object.create || function create(O, Properties) {
var result;
if (O !== null) {
Empty[PROTOTYPE$1] = _anObject(O);
result = new Empty();
Empty[PROTOTYPE$1] = null;
// add "__proto__" for Object.getPrototypeOf polyfill
result[IE_PROTO$1] = O;
} else result = createDict();
return Properties === undefined ? result : _objectDps(result, Properties);
};
var gOPN = _objectGopn.f;
var gOPD$1 = _objectGopd.f;
var dP$1 = _objectDp.f;
var $trim = _stringTrim.trim;
var NUMBER = 'Number';
var $Number = _global[NUMBER];
var Base = $Number;
var proto = $Number.prototype;
// Opera ~12 has broken Object#toString
var BROKEN_COF = _cof(_objectCreate(proto)) == NUMBER;
var TRIM = 'trim' in String.prototype;
// 7.1.3 ToNumber(argument)
var toNumber = function (argument) {
var it = _toPrimitive(argument, false);
if (typeof it == 'string' && it.length > 2) {
it = TRIM ? it.trim() : $trim(it, 3);
var first = it.charCodeAt(0);
var third, radix, maxCode;
if (first === 43 || first === 45) {
third = it.charCodeAt(2);
if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
} else if (first === 48) {
switch (it.charCodeAt(1)) {
case 66: case 98: radix = 2; maxCode = 49; break; // fast equal /^0b[01]+$/i
case 79: case 111: radix = 8; maxCode = 55; break; // fast equal /^0o[0-7]+$/i
default: return +it;
}
for (var digits = it.slice(2), i = 0, l = digits.length, code; i < l; i++) {
code = digits.charCodeAt(i);
// parseInt parses a string to a first unavailable symbol
// but ToNumber should return NaN if a string contains unavailable symbols
if (code < 48 || code > maxCode) return NaN;
} return parseInt(digits, radix);
}
} return +it;
};
if (!$Number(' 0o1') || !$Number('0b1') || $Number('+0x1')) {
$Number = function Number(value) {
var it = arguments.length < 1 ? 0 : value;
var that = this;
return that instanceof $Number
// check on 1..constructor(foo) case
&& (BROKEN_COF ? _fails(function () { proto.valueOf.call(that); }) : _cof(that) != NUMBER)
? _inheritIfRequired(new Base(toNumber(it)), that, $Number) : toNumber(it);
};
for (var keys = _descriptors ? gOPN(Base) : (
// ES3:
'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
// ES6 (in case, if modules with ES6 Number statics required before):
'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
).split(','), j = 0, key; keys.length > j; j++) {
if (_has(Base, key = keys[j]) && !_has($Number, key)) {
dP$1($Number, key, gOPD$1(Base, key));
}
}
$Number.prototype = proto;
proto.constructor = $Number;
_redefine(_global, NUMBER, $Number);
}
// 20.1.2.4 Number.isNaN(number)
_export(_export.S, 'Number', {
isNaN: function isNaN(number) {
// eslint-disable-next-line no-self-compare
return number != number;
}
});
var _redefineAll = function (target, src, safe) {
for (var key in src) _redefine(target, key, src[key], safe);
return target;
};
var _anInstance = function (it, Constructor, name, forbiddenField) {
if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) {
throw TypeError(name + ': incorrect invocation!');
} return it;
};
// call something on iterator step with safe closing on error
var _iterCall = function (iterator, fn, value, entries) {
try {
return entries ? fn(_anObject(value)[0], value[1]) : fn(value);
// 7.4.6 IteratorClose(iterator, completion)
} catch (e) {
var ret = iterator['return'];
if (ret !== undefined) _anObject(ret.call(iterator));
throw e;
}
};
var _iterators = {};
var _wks = createCommonjsModule(function (module) {
var store = _shared('wks');
var Symbol = _global.Symbol;
var USE_SYMBOL = typeof Symbol == 'function';
var $exports = module.exports = function (name) {
return store[name] || (store[name] =
USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : _uid)('Symbol.' + name));
};
$exports.store = store;
});
// check on default Array iterator
var ITERATOR = _wks('iterator');
var ArrayProto = Array.prototype;
var _isArrayIter = function (it) {
return it !== undefined && (_iterators.Array === it || ArrayProto[ITERATOR] === it);
};
// getting tag from 19.1.3.6 Object.prototype.toString()
var TAG = _wks('toStringTag');
// ES3 wrong here
var ARG = _cof(function () { return arguments; }()) == 'Arguments';
// fallback for IE11 Script Access Denied error
var tryGet = function (it, key) {
try {
return it[key];
} catch (e) { /* empty */ }
};
var _classof = function (it) {
var O, T, B;
return it === undefined ? 'Undefined' : it === null ? 'Null'
// @@toStringTag case
: typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T
// builtinTag case
: ARG ? _cof(O)
// ES3 arguments fallback
: (B = _cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;
};
var ITERATOR$1 = _wks('iterator');
var core_getIteratorMethod = _core.getIteratorMethod = function (it) {
if (it != undefined) return it[ITERATOR$1]
|| it['@@iterator']
|| _iterators[_classof(it)];
};
var _forOf = createCommonjsModule(function (module) {
var BREAK = {};
var RETURN = {};
var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) {
var iterFn = ITERATOR ? function () { return iterable; } : core_getIteratorMethod(iterable);
var f = _ctx(fn, that, entries ? 2 : 1);
var index = 0;
var length, step, iterator, result;
if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!');
// fast case for arrays with default iterator
if (_isArrayIter(iterFn)) for (length = _toLength(iterable.length); length > index; index++) {
result = entries ? f(_anObject(step = iterable[index])[0], step[1]) : f(iterable[index]);
if (result === BREAK || result === RETURN) return result;
} else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) {
result = _iterCall(iterator, f, step.value, entries);
if (result === BREAK || result === RETURN) return result;
}
};
exports.BREAK = BREAK;
exports.RETURN = RETURN;
});
var def = _objectDp.f;
var TAG$1 = _wks('toStringTag');
var _setToStringTag = function (it, tag, stat) {
if (it && !_has(it = stat ? it : it.prototype, TAG$1)) def(it, TAG$1, { configurable: true, value: tag });
};
var IteratorPrototype = {};
// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
_hide(IteratorPrototype, _wks('iterator'), function () { return this; });
var _iterCreate = function (Constructor, NAME, next) {
Constructor.prototype = _objectCreate(IteratorPrototype, { next: _propertyDesc(1, next) });
_setToStringTag(Constructor, NAME + ' Iterator');
};
// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)
var IE_PROTO$2 = _sharedKey('IE_PROTO');
var ObjectProto = Object.prototype;
var _objectGpo = Object.getPrototypeOf || function (O) {
O = _toObject(O);
if (_has(O, IE_PROTO$2)) return O[IE_PROTO$2];
if (typeof O.constructor == 'function' && O instanceof O.constructor) {
return O.constructor.prototype;
} return O instanceof Object ? ObjectProto : null;
};
var ITERATOR$2 = _wks('iterator');
var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`
var FF_ITERATOR = '@@iterator';
var KEYS = 'keys';
var VALUES = 'values';
var returnThis = function () { return this; };
var _iterDefine = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {
_iterCreate(Constructor, NAME, next);
var getMethod = function (kind) {
if (!BUGGY && kind in proto) return proto[kind];
switch (kind) {
case KEYS: return function keys() { return new Constructor(this, kind); };
case VALUES: return function values() { return new Constructor(this, kind); };
} return function entries() { return new Constructor(this, kind); };
};
var TAG = NAME + ' Iterator';
var DEF_VALUES = DEFAULT == VALUES;
var VALUES_BUG = false;
var proto = Base.prototype;
var $native = proto[ITERATOR$2] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];
var $default = $native || getMethod(DEFAULT);
var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;
var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;
var methods, key, IteratorPrototype;
// Fix native
if ($anyNative) {
IteratorPrototype = _objectGpo($anyNative.call(new Base()));
if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {
// Set @@toStringTag to native iterators
_setToStringTag(IteratorPrototype, TAG, true);
// fix for some old engines
if (!_library && typeof IteratorPrototype[ITERATOR$2] != 'function') _hide(IteratorPrototype, ITERATOR$2, returnThis);
}
}
// fix Array#{values, @@iterator}.name in V8 / FF
if (DEF_VALUES && $native && $native.name !== VALUES) {
VALUES_BUG = true;
$default = function values() { return $native.call(this); };
}
// Define iterator
if ((!_library || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR$2])) {
_hide(proto, ITERATOR$2, $default);
}
// Plug for library
_iterators[NAME] = $default;
_iterators[TAG] = returnThis;
if (DEFAULT) {
methods = {
values: DEF_VALUES ? $default : getMethod(VALUES),
keys: IS_SET ? $default : getMethod(KEYS),
entries: $entries
};
if (FORCED) for (key in methods) {
if (!(key in proto)) _redefine(proto, key, methods[key]);
} else _export(_export.P + _export.F * (BUGGY || VALUES_BUG), NAME, methods);
}
return methods;
};
var _iterStep = function (done, value) {
return { value: value, done: !!done };
};
var SPECIES = _wks('species');
var _setSpecies = function (KEY) {
var C = _global[KEY];
if (_descriptors && C && !C[SPECIES]) _objectDp.f(C, SPECIES, {
configurable: true,
get: function () { return this; }
});
};
var _meta = createCommonjsModule(function (module) {
var META = _uid('meta');
var setDesc = _objectDp.f;
var id = 0;
var isExtensible = Object.isExtensible || function () {
return true;
};
var FREEZE = !_fails(function () {
return isExtensible(Object.preventExtensions({}));
});
var setMeta = function (it) {
setDesc(it, META, { value: {
i: 'O' + ++id, // object ID
w: {} // weak collections IDs
} });
};
var fastKey = function (it, create) {
// return primitive with prefix
if (!_isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
if (!_has(it, META)) {
// can't set metadata to uncaught frozen object
if (!isExtensible(it)) return 'F';
// not necessary to add metadata
if (!create) return 'E';
// add missing metadata
setMeta(it);
// return object ID
} return it[META].i;
};
var getWeak = function (it, create) {
if (!_has(it, META)) {
// can't set metadata to uncaught frozen object
if (!isExtensible(it)) return true;
// not necessary to add metadata
if (!create) return false;
// add missing metadata
setMeta(it);
// return hash weak collections IDs
} return it[META].w;
};
// add metadata on freeze-family methods calling
var onFreeze = function (it) {
if (FREEZE && meta.NEED && isExtensible(it) && !_has(it, META)) setMeta(it);
return it;
};
var meta = module.exports = {
KEY: META,
NEED: false,
fastKey: fastKey,
getWeak: getWeak,
onFreeze: onFreeze
};
});
var _meta_1 = _meta.KEY;
var _meta_2 = _meta.NEED;
var _meta_3 = _meta.fastKey;
var _meta_4 = _meta.getWeak;
var _meta_5 = _meta.onFreeze;
var _validateCollection = function (it, TYPE) {
if (!_isObject(it) || it._t !== TYPE) throw TypeError('Incompatible receiver, ' + TYPE + ' required!');
return it;
};
var dP$2 = _objectDp.f;
var fastKey = _meta.fastKey;
var SIZE = _descriptors ? '_s' : 'size';
var getEntry = function (that, key) {
// fast case
var index = fastKey(key);
var entry;
if (index !== 'F') return that._i[index];
// frozen object case
for (entry = that._f; entry; entry = entry.n) {
if (entry.k == key) return entry;
}
};
var _collectionStrong = {
getConstructor: function (wrapper, NAME, IS_MAP, ADDER) {
var C = wrapper(function (that, iterable) {
_anInstance(that, C, NAME, '_i');
that._t = NAME; // collection type
that._i = _objectCreate(null); // index
that._f = undefined; // first entry
that._l = undefined; // last entry
that[SIZE] = 0; // size
if (iterable != undefined) _forOf(iterable, IS_MAP, that[ADDER], that);
});
_redefineAll(C.prototype, {
// 23.1.3.1 Map.prototype.clear()
// 23.2.3.2 Set.prototype.clear()
clear: function clear() {
for (var that = _validateCollection(this, NAME), data = that._i, entry = that._f; entry; entry = entry.n) {
entry.r = true;
if (entry.p) entry.p = entry.p.n = undefined;
delete data[entry.i];
}
that._f = that._l = undefined;
that[SIZE] = 0;
},
// 23.1.3.3 Map.prototype.delete(key)
// 23.2.3.4 Set.prototype.delete(value)
'delete': function (key) {
var that = _validateCollection(this, NAME);
var entry = getEntry(that, key);
if (entry) {
var next = entry.n;
var prev = entry.p;
delete that._i[entry.i];
entry.r = true;
if (prev) prev.n = next;
if (next) next.p = prev;
if (that._f == entry) that._f = next;
if (that._l == entry) that._l = prev;
that[SIZE]--;
} return !!entry;
},
// 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
// 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
forEach: function forEach(callbackfn /* , that = undefined */) {
_validateCollection(this, NAME);
var f = _ctx(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
var entry;
while (entry = entry ? entry.n : this._f) {
f(entry.v, entry.k, this);
// revert to the last existing entry
while (entry && entry.r) entry = entry.p;
}
},
// 23.1.3.7 Map.prototype.has(key)
// 23.2.3.7 Set.prototype.has(value)
has: function has(key) {
return !!getEntry(_validateCollection(this, NAME), key);
}
});
if (_descriptors) dP$2(C.prototype, 'size', {
get: function () {
return _validateCollection(this, NAME)[SIZE];
}
});
return C;
},
def: function (that, key, value) {
var entry = getEntry(that, key);
var prev, index;
// change existing entry
if (entry) {
entry.v = value;
// create new entry
} else {
that._l = entry = {
i: index = fastKey(key, true), // <- index
k: key, // <- key
v: value, // <- value
p: prev = that._l, // <- previous entry
n: undefined, // <- next entry
r: false // <- removed
};
if (!that._f) that._f = entry;
if (prev) prev.n = entry;
that[SIZE]++;
// add to index
if (index !== 'F') that._i[index] = entry;
} return that;
},
getEntry: getEntry,
setStrong: function (C, NAME, IS_MAP) {
// add .keys, .values, .entries, [@@iterator]
// 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11
_iterDefine(C, NAME, function (iterated, kind) {
this._t = _validateCollection(iterated, NAME); // target
this._k = kind; // kind
this._l = undefined; // previous
}, function () {
var that = this;
var kind = that._k;
var entry = that._l;
// revert to the last existing entry
while (entry && entry.r) entry = entry.p;
// get next entry
if (!that._t || !(that._l = entry = entry ? entry.n : that._t._f)) {
// or finish the iteration
that._t = undefined;
return _iterStep(1);
}
// return step by kind
if (kind == 'keys') return _iterStep(0, entry.k);
if (kind == 'values') return _iterStep(0, entry.v);
return _iterStep(0, [entry.k, entry.v]);
}, IS_MAP ? 'entries' : 'values', !IS_MAP, true);
// add [@@species], 23.1.2.2, 23.2.2.2
_setSpecies(NAME);
}
};
var ITERATOR$3 = _wks('iterator');
var SAFE_CLOSING = false;
try {
var riter = [7][ITERATOR$3]();
riter['return'] = function () { SAFE_CLOSING = true; };
} catch (e) { /* empty */ }
var _iterDetect = function (exec, skipClosing) {
if (!skipClosing && !SAFE_CLOSING) return false;
var safe = false;
try {
var arr = [7];
var iter = arr[ITERATOR$3]();
iter.next = function () { return { done: safe = true }; };
arr[ITERATOR$3] = function () { return iter; };
exec(arr);
} catch (e) { /* empty */ }
return safe;
};
var _collection = function (NAME, wrapper, methods, common, IS_MAP, IS_WEAK) {
var Base = _global[NAME];
var C = Base;
var ADDER = IS_MAP ? 'set' : 'add';
var proto = C && C.prototype;
var O = {};
var fixMethod = function (KEY) {
var fn = proto[KEY];
_redefine(proto, KEY,
KEY == 'delete' ? function (a) {
return IS_WEAK && !_isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
} : KEY == 'has' ? function has(a) {
return IS_WEAK && !_isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
} : KEY == 'get' ? function get(a) {
return IS_WEAK && !_isObject(a) ? undefined : fn.call(this, a === 0 ? 0 : a);
} : KEY == 'add' ? function add(a) { fn.call(this, a === 0 ? 0 : a); return this; }
: function set(a, b) { fn.call(this, a === 0 ? 0 : a, b); return this; }
);
};
if (typeof C != 'function' || !(IS_WEAK || proto.forEach && !_fails(function () {
new C().entries().next();
}))) {
// create collection constructor
C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER);
_redefineAll(C.prototype, methods);
_meta.NEED = true;
} else {
var instance = new C();
// early implementations not supports chaining
var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
// V8 ~ Chromium 40- weak-collections throws on primitives, but should return false
var THROWS_ON_PRIMITIVES = _fails(function () { instance.has(1); });
// most early implementations doesn't supports iterables, most modern - not close it correctly
var ACCEPT_ITERABLES = _iterDetect(function (iter) { new C(iter); }); // eslint-disable-line no-new
// for early implementations -0 and +0 not the same
var BUGGY_ZERO = !IS_WEAK && _fails(function () {
// V8 ~ Chromium 42- fails only with 5+ elements
var $instance = new C();
var index = 5;
while (index--) $instance[ADDER](index, index);
return !$instance.has(-0);
});
if (!ACCEPT_ITERABLES) {
C = wrapper(function (target, iterable) {
_anInstance(target, C, NAME);
var that = _inheritIfRequired(new Base(), target, C);
if (iterable != undefined) _forOf(iterable, IS_MAP, that[ADDER], that);
return that;
});
C.prototype = proto;
proto.constructor = C;
}
if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {
fixMethod('delete');
fixMethod('has');
IS_MAP && fixMethod('get');
}
if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);
// weak collections should not contains .clear method
if (IS_WEAK && proto.clear) delete proto.clear;
}
_setToStringTag(C, NAME);
O[NAME] = C;
_export(_export.G + _export.W + _export.F * (C != Base), O);
if (!IS_WEAK) common.setStrong(C, NAME, IS_MAP);
return C;
};
var SET = 'Set';
// 23.2 Set Objects
var es6_set = _collection(SET, function (get) {
return function Set() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };
}, {
// 23.2.3.1 Set.prototype.add(value)
add: function add(value) {
return _collectionStrong.def(_validateCollection(this, SET), value = value === 0 ? 0 : value, value);
}
}, _collectionStrong);
// 22.1.3.31 Array.prototype[@@unscopables]
var UNSCOPABLES = _wks('unscopables');
var ArrayProto$1 = Array.prototype;
if (ArrayProto$1[UNSCOPABLES] == undefined) _hide(ArrayProto$1, UNSCOPABLES, {});
var _addToUnscopables = function (key) {
ArrayProto$1[UNSCOPABLES][key] = true;
};
// 22.1.3.4 Array.prototype.entries()
// 22.1.3.13 Array.prototype.keys()
// 22.1.3.29 Array.prototype.values()
// 22.1.3.30 Array.prototype[@@iterator]()
var es6_array_iterator = _iterDefine(Array, 'Array', function (iterated, kind) {
this._t = _toIobject(iterated); // target
this._i = 0; // next index
this._k = kind; // kind
// 22.1.5.2.1 %ArrayIteratorPrototype%.next()
}, function () {
var O = this._t;
var kind = this._k;
var index = this._i++;
if (!O || index >= O.length) {
this._t = undefined;
return _iterStep(1);
}
if (kind == 'keys') return _iterStep(0, index);
if (kind == 'values') return _iterStep(0, O[index]);
return _iterStep(0, [index, O[index]]);
}, 'values');
// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
_iterators.Arguments = _iterators.Array;
_addToUnscopables('keys');
_addToUnscopables('values');
_addToUnscopables('entries');
var ITERATOR$4 = _wks('iterator');
var TO_STRING_TAG = _wks('toStringTag');
var ArrayValues = _iterators.Array;
var DOMIterables = {
CSSRuleList: true, // TODO: Not spec compliant, should be false.
CSSStyleDeclaration: false,
CSSValueList: false,
ClientRectList: false,
DOMRectList: false,
DOMStringList: false,
DOMTokenList: true,
DataTransferItemList: false,
FileList: false,
HTMLAllCollection: false,
HTMLCollection: false,
HTMLFormElement: false,
HTMLSelectElement: false,
MediaList: true, // TODO: Not spec compliant, should be false.
MimeTypeArray: false,
NamedNodeMap: false,
NodeList: true,
PaintRequestList: false,
Plugin: false,
PluginArray: false,
SVGLengthList: false,
SVGNumberList: false,
SVGPathSegList: false,
SVGPointList: false,
SVGStringList: false,
SVGTransformList: false,
SourceBufferList: false,
StyleSheetList: true, // TODO: Not spec compliant, should be false.
TextTrackCueList: false,
TextTrackList: false,
TouchList: false
};
for (var collections = _objectKeys(DOMIterables), i = 0; i < collections.length; i++) {
var NAME = collections[i];
var explicit = DOMIterables[NAME];
var Collection = _global[NAME];
var proto$1 = Collection && Collection.prototype;
var key$1;
if (proto$1) {
if (!proto$1[ITERATOR$4]) _hide(proto$1, ITERATOR$4, ArrayValues);
if (!proto$1[TO_STRING_TAG]) _hide(proto$1, TO_STRING_TAG, NAME);
_iterators[NAME] = ArrayValues;
if (explicit) for (key$1 in es6_array_iterator) if (!proto$1[key$1]) _redefine(proto$1, key$1, es6_array_iterator[key$1], true);
}
}
// true -> String#at
// false -> String#codePointAt
var _stringAt = function (TO_STRING) {
return function (that, pos) {
var s = String(_defined(that));
var i = _toInteger(pos);
var l = s.length;
var a, b;
if (i < 0 || i >= l) return TO_STRING ? '' : undefined;
a = s.charCodeAt(i);
return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff
? TO_STRING ? s.charAt(i) : a
: TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;
};
};
var $at = _stringAt(true);
// 21.1.3.27 String.prototype[@@iterator]()
_iterDefine(String, 'String', function (iterated) {
this._t = String(iterated); // target
this._i = 0; // next index
// 21.1.5.2.1 %StringIteratorPrototype%.next()
}, function () {
var O = this._t;
var index = this._i;
var point;
if (index >= O.length) return { value: undefined, done: true };
point = $at(O, index);
this._i += point.length;
return { value: point, done: false };
});
var MAP = 'Map';
// 23.1 Map Objects
var es6_map = _collection(MAP, function (get) {
return function Map() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };
}, {
// 23.1.3.6 Map.prototype.get(key)
get: function get(key) {
var entry = _collectionStrong.getEntry(_validateCollection(this, MAP), key);
return entry && entry.v;
},
// 23.1.3.9 Map.prototype.set(key, value)
set: function set(key, value) {
return _collectionStrong.def(_validateCollection(this, MAP), key === 0 ? 0 : key, value);
}
}, _collectionStrong, true);
/**
* Check if the given value is a plain object.
*
* @param {Mixed} value
* @return {Boolean}
*/
const isPlainObj = value => {
if (typeof value !== "object") {
return false;
}
if (value === undefined || value === null) {
return false;
}
const prototype = Object.getPrototypeOf(value);
if (prototype === null || prototype === Object.getPrototypeOf({})) {
return true;
}
return value.constructor === Object;
};
var isPlainObj_cjs = isPlainObj;
var isString = function isString(value) {
return typeof value === "string";
};
var isNumber = function isNumber(value) {
return typeof value === "number";
};
var isArray = function isArray(value) {
return Array.isArray(value);
};
var isMapOrSet = function isMapOrSet(value) {
return value instanceof Map || value instanceof Set;
};
/**
* Check if the given value is empty or not.
*
* @param {Mixed} value
* @return {Boolean}
*/
var isEmpty = function isEmpty(value) {
var empty = false;
if (value === null || value === undefined) {
empty = true;
} else if (isString(value)) {
empty = value.trim().length === 0;
} else if (isNumber(value)) {
empty = Number.isNaN(value);
} else if (isArray(value)) {
empty = value.length === 0;
} else if (isMapOrSet(value)) {
empty = value.size === 0;
} else if (isPlainObj_cjs(value)) {
empty = Object.keys(value).length === 0;
}
return empty;
};
return isEmpty;
})));