31 lines
733 B
JavaScript
31 lines
733 B
JavaScript
/**
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* A fast array comparison function that compares two arrays for equality.
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*
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* Assumes that the arrays are ordered and contain only primitive values.
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*
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* It is faster than `fastObjectShallowCompare` for arrays.
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*
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* Returns true for instance equality, even if inputs are not arrays.
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*
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* @returns true if arrays contain the same elements in the same order, false otherwise.
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*/
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export function fastArrayCompare(a, b) {
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if (a === b) {
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return true;
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}
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if (!Array.isArray(a) || !Array.isArray(b)) {
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return false;
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}
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let i = a.length;
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if (i !== b.length) {
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return false;
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}
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// eslint-disable-next-line no-plusplus
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while (i--) {
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if (a[i] !== b[i]) {
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return false;
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}
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}
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return true;
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} |