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Optimize Map/Set fast key path. #397

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merged 1 commit into from
Jan 11, 2016
Merged

Optimize Map/Set fast key path. #397

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9 changes: 4 additions & 5 deletions es6-shim.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2631,18 +2631,17 @@
if (!preservesInsertionOrder) {
return null;
}
var type = typeof key;
if (type === 'undefined' || key === null) {
if (typeof key === 'undefined' || key === null) {
return '^' + ES.ToString(key);
} else if (type === 'string') {
} else if (typeof key === 'string') {
return '$' + key;
} else if (type === 'number') {
} else if (typeof key === 'number') {
// note that -0 will get coerced to "0" when used as a property key
if (!preservesNumericInsertionOrder) {
return 'n' + key;
}
return key;
} else if (type === 'boolean') {
} else if (typeof key === 'boolean') {
return 'b' + key;
}
return null;
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