Replace shifts by push. #85
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| // Cached entry not at top of cache, move it to the top | ||
| if (cacheIndex > 0) { | ||
| entries.slice(cacheIndex, 1) |
| const entry = entries[cacheIndex] | ||
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| // Cached entry not at top of cache, move it to the top | ||
| if (cacheIndex > 0) { |
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You probably want to use cacheIndex !== entries.length - 1
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Push are O(1) operations whereas shift are O(n) operations, this removes this complexity.
Also returns a null as the comment says