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Avoid inspecting the entire key-value array when adding values to a stack.

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John-David Dalton
2016-05-24 09:43:00 -07:00
parent e18b577d20
commit 98c422d227
1 changed files with 7 additions and 2 deletions
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9
lodash.js
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@@ -2122,8 +2122,13 @@
*/ */
function stackSet(key, value) { function stackSet(key, value) {
var cache = this.__data__; var cache = this.__data__;
if (Map && cache instanceof ListCache && cache.__data__.length == LARGE_ARRAY_SIZE) { if (cache instanceof ListCache) {
cache = this.__data__ = new MapCache(cache.__data__); var pairs = cache.__data__;
if (!Map || pairs.length < LARGE_ARRAY_SIZE) {
pairs.push([key, value]);
return this;
}
cache = this.__data__ = new MapCache(pairs);
} }
cache.set(key, value); cache.set(key, value);
return this; return this;