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fix(Util): make arraysEqual avoid mutating the input arrays (#3506)

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rei2hu 2019-10-04 09:39:56 -05:00 committed by SpaceEEC
parent a8e365743c
commit 8ddd0616a9
1 changed files with 6 additions and 8 deletions
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14
src/util/Util.js
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@ -84,9 +84,9 @@ class Util {
}
/**
* Checks whether the arrays are equal, also removes duplicated entries from b.
* @param {Array<*>} a Array which will not be modified.
* @param {Array<*>} b Array to remove duplicated entries from.
* Checks whether two arrays are equal or have the same elements.
* @param {Array<*>} a The first array.
* @param {Array<*>} b The second array.
* @returns {boolean} Whether the arrays are equal.
* @private
*/
@ -94,12 +94,10 @@ class Util {
if (a === b) return true;
if (a.length !== b.length) return false;
for (const item of a) {
const ind = b.indexOf(item);
if (ind !== -1) b.splice(ind, 1);
}
const setA = new Set(a);
const setB = new Set(b);
return b.length === 0;
return a.every(e => setB.has(e)) && b.every(e => setA.has(e));
}
/**