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'use strict';
import once from 'lodash-es/once';
import noop from 'lodash-es/noop';
import keyIterator from './internal/keyIterator';
import onlyOnce from './internal/onlyOnce';
export default function eachOf(object, iterator, callback) {
callback = once(callback || noop);
object = object || [];
var iter = keyIterator(object);
var key, completed = 0;
while ((key = iter()) != null) {
completed += 1;
iterator(object[key], key, onlyOnce(done));
}
if (completed === 0) callback(null);
function done(err) {
completed--;
if (err) {
callback(err);
}
// Check key is null in case iterator isn't exhausted
// and done resolved synchronously.
else if (key === null && completed <= 0) {
callback(null);
}
}
}
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