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perf: match ownKeys perf to the one of objectSpread #10189

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merged 3 commits into from Jul 11, 2019
Merged

perf: match ownKeys perf to the one of objectSpread #10189

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52b9844
perf: match ownKeys perf to the one of objectSpread
JLHwung Jul 9, 2019
3d4928c
test: update test fixtures
JLHwung Jul 9, 2019
49f8d4c
docs: note difference with `Reflect.ownKeys`
JLHwung Jul 9, 2019
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9 changes: 5 additions & 4 deletions packages/babel-helpers/src/helpers.js
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Expand Up @@ -412,11 +412,12 @@ helpers.objectSpread2 = helper("7.5.0")`
function ownKeys(object, enumerableOnly) {
var keys = Object.keys(object);
if (Object.getOwnPropertySymbols) {
keys.push.apply(keys, Object.getOwnPropertySymbols(object));
var symbols = Object.getOwnPropertySymbols(object);
if (enumerableOnly) symbols = symbols.filter(function (sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
});
keys.push.apply(keys, symbols);
}
if (enumerableOnly) keys = keys.filter(function (sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
});
return keys;
}

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