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Просмотр файла: samsam.js
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(factory((global.samsam = {})));
}(this, (function (exports) { 'use strict';
var o = Object.prototype;
function getClass(value) {
// Returns the internal [[Class]] by calling Object.prototype.toString
// with the provided value as this. Return value is a string, naming the
// internal class, e.g. "Array"
return o.toString.call(value).split(/[ \]]/)[1];
}
var getClass_1 = getClass;
function isNaN(value) {
// Unlike global isNaN, this avoids type coercion
// typeof check avoids IE host object issues, hat tip to
// lodash
var val = value; // JsLint thinks value !== value is "weird"
return typeof value === "number" && value !== val;
}
var isNan = isNaN;
/**
* @name samsam.isNegZero
* @param Object value
*
* Returns ``true`` if ``value`` is ``-0``.
*/
function isNegZero(value) {
return value === 0 && 1 / value === -Infinity;
}
var isNegZero_1 = isNegZero;
/**
* @name samsam.equal
* @param Object obj1
* @param Object obj2
*
* Returns ``true`` if two objects are strictly equal. Compared to
* ``===`` there are two exceptions:
*
* - NaN is considered equal to NaN
* - -0 and +0 are not considered equal
*/
function identical(obj1, obj2) {
if (obj1 === obj2 || (isNan(obj1) && isNan(obj2))) {
return obj1 !== 0 || isNegZero_1(obj1) === isNegZero_1(obj2);
}
return false;
}
var identical_1 = identical;
/**
* @name samsam.isArguments
* @param Object object
*
* Returns ``true`` if ``object`` is an ``arguments`` object,
* ``false`` otherwise.
*/
function isArguments(object) {
if (getClass_1(object) === "Arguments") {
return true;
}
if (
typeof object !== "object" ||
typeof object.length !== "number" ||
getClass_1(object) === "Array"
) {
return false;
}
if (typeof object.callee === "function") {
return true;
}
try {
object[object.length] = 6;
delete object[object.length];
} catch (e) {
return true;
}
return false;
}
var isArguments_1 = isArguments;
function isDate(value) {
return value instanceof Date;
}
var isDate_1 = isDate;
var div = typeof document !== "undefined" && document.createElement("div");
/**
* @name samsam.isElement
* @param Object object
*
* Returns ``true`` if ``object`` is a DOM element node. Unlike
* Underscore.js/lodash, this function will return ``false`` if ``object``
* is an *element-like* object, i.e. a regular object with a ``nodeType``
* property that holds the value ``1``.
*/
function isElement(object) {
if (!object || object.nodeType !== 1 || !div) {
return false;
}
try {
object.appendChild(div);
object.removeChild(div);
} catch (e) {
return false;
}
return true;
}
var isElement_1 = isElement;
// Returns true when the value is a regular Object and not a specialized Object
//
// This helps speeding up deepEqual cyclic checks
// The premise is that only Objects are stored in the visited array.
// So if this function returns false, we don't have to do the
// expensive operation of searching for the value in the the array of already
// visited objects
function isObject(value) {
return (
typeof value === "object" &&
value !== null &&
// none of these are collection objects, so we can return false
!(value instanceof Boolean) &&
!(value instanceof Date) &&
!(value instanceof Error) &&
!(value instanceof Number) &&
!(value instanceof RegExp) &&
!(value instanceof String)
);
}
var isObject_1 = isObject;
function isSet(val) {
return (typeof Set !== "undefined" && val instanceof Set) || false;
}
var isSet_1 = isSet;
function isSubset(s1, s2, compare) {
var allContained = true;
s1.forEach(function(v1) {
var includes = false;
s2.forEach(function(v2) {
if (compare(v2, v1)) {
includes = true;
}
});
allContained = allContained && includes;
});
return allContained;
}
var isSubset_1 = isSubset;
var re = /function (\w+)\s*\(/;
function getClassName(value) {
if (value.constructor && "name" in value.constructor) {
return value.constructor.name;
}
if (typeof value.constructor === "function") {
var match = value.constructor.toString().match(re);
if (match.length > 1) {
return match[1];
}
}
return null;
}
var getClassName_1 = getClassName;
var every = Array.prototype.every;
var getTime = Date.prototype.getTime;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var indexOf = Array.prototype.indexOf;
var keys = Object.keys;
/**
* @name samsam.deepEqual
* @param Object first
* @param Object second
*
* Deep equal comparison. Two values are "deep equal" if:
*
* - They are equal, according to samsam.identical
* - They are both date objects representing the same time
* - They are both arrays containing elements that are all deepEqual
* - They are objects with the same set of properties, and each property
* in ``first`` is deepEqual to the corresponding property in ``second``
*
* Supports cyclic objects.
*/
function deepEqualCyclic(first, second) {
// used for cyclic comparison
// contain already visited objects
var objects1 = [];
var objects2 = [];
// contain pathes (position in the object structure)
// of the already visited objects
// indexes same as in objects arrays
var paths1 = [];
var paths2 = [];
// contains combinations of already compared objects
// in the manner: { "$1['ref']$2['ref']": true }
var compared = {};
// does the recursion for the deep equal check
return (function deepEqual(obj1, obj2, path1, path2) {
var type1 = typeof obj1;
var type2 = typeof obj2;
// == null also matches undefined
if (
obj1 === obj2 ||
isNan(obj1) ||
isNan(obj2) ||
obj1 == null ||
obj2 == null ||
type1 !== "object" ||
type2 !== "object"
) {
return identical_1(obj1, obj2);
}
// Elements are only equal if identical(expected, actual)
if (isElement_1(obj1) || isElement_1(obj2)) {
return false;
}
var isDate1 = isDate_1(obj1);
var isDate2 = isDate_1(obj2);
if (isDate1 || isDate2) {
if (
!isDate1 ||
!isDate2 ||
getTime.call(obj1) !== getTime.call(obj2)
) {
return false;
}
}
if (obj1 instanceof RegExp && obj2 instanceof RegExp) {
if (obj1.toString() !== obj2.toString()) {
return false;
}
}
if (obj1 instanceof Error && obj2 instanceof Error) {
if (
obj1.constructor !== obj2.constructor ||
obj1.message !== obj2.message ||
obj1.stack !== obj2.stack
) {
return false;
}
}
var class1 = getClass_1(obj1);
var class2 = getClass_1(obj2);
var keys1 = keys(obj1);
var keys2 = keys(obj2);
var name1 = getClassName_1(obj1);
var name2 = getClassName_1(obj2);
if (isArguments_1(obj1) || isArguments_1(obj2)) {
if (obj1.length !== obj2.length) {
return false;
}
} else {
if (
type1 !== type2 ||
class1 !== class2 ||
keys1.length !== keys2.length ||
(name1 && name2 && name1 !== name2)
) {
return false;
}
}
if (isSet_1(obj1) || isSet_1(obj2)) {
if (!isSet_1(obj1) || !isSet_1(obj2) || obj1.size !== obj2.size) {
return false;
}
return isSubset_1(obj1, obj2, deepEqual);
}
return every.call(keys1, function(key) {
if (!hasOwnProperty.call(obj2, key)) {
return false;
}
var value1 = obj1[key];
var value2 = obj2[key];
var isObject1 = isObject_1(value1);
var isObject2 = isObject_1(value2);
// determines, if the objects were already visited
// (it's faster to check for isObject first, than to
// get -1 from getIndex for non objects)
var index1 = isObject1 ? indexOf.call(objects1, value1) : -1;
var index2 = isObject2 ? indexOf.call(objects2, value2) : -1;
// determines the new paths of the objects
// - for non cyclic objects the current path will be extended
// by current property name
// - for cyclic objects the stored path is taken
var newPath1 =
index1 !== -1
? paths1[index1]
: path1 + "[" + JSON.stringify(key) + "]";
var newPath2 =
index2 !== -1
? paths2[index2]
: path2 + "[" + JSON.stringify(key) + "]";
var combinedPath = newPath1 + newPath2;
// stop recursion if current objects are already compared
if (compared[combinedPath]) {
return true;
}
// remember the current objects and their paths
if (index1 === -1 && isObject1) {
objects1.push(value1);
paths1.push(newPath1);
}
if (index2 === -1 && isObject2) {
objects2.push(value2);
paths2.push(newPath2);
}
// remember that the current objects are already compared
if (isObject1 && isObject2) {
compared[combinedPath] = true;
}
// End of cyclic logic
// neither value1 nor value2 is a cycle
// continue with next level
return deepEqual(value1, value2, newPath1, newPath2);
});
})(first, second, "$1", "$2");
}
var deepEqual = deepEqualCyclic;
function arrayContains(array, subset, compare) {
if (subset.length === 0) {
return true;
}
var i, l, j, k;
for (i = 0, l = array.length; i < l; ++i) {
if (compare(array[i], subset[0])) {
for (j = 0, k = subset.length; j < k; ++j) {
if (i + j >= l) {
return false;
}
if (!compare(array[i + j], subset[j])) {
return false;
}
}
return true;
}
}
return false;
}
/**
* @name samsam.match
* @param Object object
* @param Object matcher
*
* Compare arbitrary value ``object`` with matcher.
*/
function match(object, matcher) {
if (matcher && typeof matcher.test === "function") {
return matcher.test(object);
}
if (typeof matcher === "function") {
return matcher(object) === true;
}
if (typeof matcher === "string") {
matcher = matcher.toLowerCase();
var notNull = typeof object === "string" || !!object;
return (
notNull &&
String(object)
.toLowerCase()
.indexOf(matcher) >= 0
);
}
if (typeof matcher === "number") {
return matcher === object;
}
if (typeof matcher === "boolean") {
return matcher === object;
}
if (typeof matcher === "undefined") {
return typeof object === "undefined";
}
if (matcher === null) {
return object === null;
}
if (object === null) {
return false;
}
if (isSet_1(object)) {
return isSubset_1(matcher, object, match);
}
if (getClass_1(object) === "Array" && getClass_1(matcher) === "Array") {
return arrayContains(object, matcher, match);
}
if (isDate_1(matcher)) {
return isDate_1(object) && object.getTime() === matcher.getTime();
}
if (matcher && typeof matcher === "object") {
if (matcher === object) {
return true;
}
if (typeof object !== "object") {
return false;
}
var prop;
// eslint-disable-next-line guard-for-in
for (prop in matcher) {
var value = object[prop];
if (
typeof value === "undefined" &&
typeof object.getAttribute === "function"
) {
value = object.getAttribute(prop);
}
if (
matcher[prop] === null ||
typeof matcher[prop] === "undefined"
) {
if (value !== matcher[prop]) {
return false;
}
} else if (
typeof value === "undefined" ||
!match(value, matcher[prop])
) {
return false;
}
}
return true;
}
throw new Error(
"Matcher was not a string, a number, a " +
"function, a boolean or an object"
);
}
var match_1 = match;
var samsam = {
isArguments: isArguments_1,
isElement: isElement_1,
isNegZero: isNegZero_1,
identical: identical_1,
deepEqual: deepEqual,
match: match_1
};
var samsam_1 = samsam.isArguments;
var samsam_2 = samsam.isElement;
var samsam_3 = samsam.isNegZero;
var samsam_4 = samsam.identical;
var samsam_5 = samsam.deepEqual;
var samsam_6 = samsam.match;
exports.default = samsam;
exports.isArguments = samsam_1;
exports.isElement = samsam_2;
exports.isNegZero = samsam_3;
exports.identical = samsam_4;
exports.deepEqual = samsam_5;
exports.match = samsam_6;
Object.defineProperty(exports, '__esModule', { value: true });
})));
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