82f2b76e25
We now use webpack instead of SystemJS, effectively bundling modules into one file (plus commons chunks) for every entry point. This results in a much smaller extension size (almost half). Furthermore we use yarn/npm even for extension run-time dependencies. This relieves us from manually vendoring and building dependencies. It's also easier to understand for new developers familiar with node.
90 lines
2.8 KiB
JavaScript
90 lines
2.8 KiB
JavaScript
var getAllKeys = require('./_getAllKeys');
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/** Used to compose bitmasks for value comparisons. */
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var COMPARE_PARTIAL_FLAG = 1;
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/** Used for built-in method references. */
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var objectProto = Object.prototype;
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/** Used to check objects for own properties. */
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var hasOwnProperty = objectProto.hasOwnProperty;
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/**
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* A specialized version of `baseIsEqualDeep` for objects with support for
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* partial deep comparisons.
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*
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* @private
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* @param {Object} object The object to compare.
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* @param {Object} other The other object to compare.
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* @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
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* @param {Function} customizer The function to customize comparisons.
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* @param {Function} equalFunc The function to determine equivalents of values.
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* @param {Object} stack Tracks traversed `object` and `other` objects.
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* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
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*/
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function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
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var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
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objProps = getAllKeys(object),
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objLength = objProps.length,
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othProps = getAllKeys(other),
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othLength = othProps.length;
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if (objLength != othLength && !isPartial) {
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return false;
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}
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var index = objLength;
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while (index--) {
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var key = objProps[index];
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if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
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return false;
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}
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}
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// Assume cyclic values are equal.
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var stacked = stack.get(object);
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if (stacked && stack.get(other)) {
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return stacked == other;
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}
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var result = true;
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stack.set(object, other);
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stack.set(other, object);
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var skipCtor = isPartial;
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while (++index < objLength) {
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key = objProps[index];
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var objValue = object[key],
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othValue = other[key];
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if (customizer) {
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var compared = isPartial
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? customizer(othValue, objValue, key, other, object, stack)
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: customizer(objValue, othValue, key, object, other, stack);
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}
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// Recursively compare objects (susceptible to call stack limits).
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if (!(compared === undefined
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? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
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: compared
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)) {
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result = false;
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break;
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}
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skipCtor || (skipCtor = key == 'constructor');
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}
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if (result && !skipCtor) {
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var objCtor = object.constructor,
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othCtor = other.constructor;
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// Non `Object` object instances with different constructors are not equal.
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if (objCtor != othCtor &&
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('constructor' in object && 'constructor' in other) &&
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!(typeof objCtor == 'function' && objCtor instanceof objCtor &&
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typeof othCtor == 'function' && othCtor instanceof othCtor)) {
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result = false;
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}
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}
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stack['delete'](object);
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stack['delete'](other);
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return result;
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}
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module.exports = equalObjects;
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