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JavaScript's functional programming helper library.
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define(['./isObject', './_setup', './_collectNonEnumProps'], function (isObject, _setup, _collectNonEnumProps) {
// Retrieve all the enumerable property names of an object.
function allKeys(obj) {
if (!isObject(obj)) return [];
var keys = [];
for (var key in obj) keys.push(key);
// Ahem, IE < 9.
if (_setup.hasEnumBug) _collectNonEnumProps(obj, keys);
return keys;
}
return allKeys;
});