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'use strict';
import noop from 'lodash-es/noop';
import once from 'lodash-es/once';
import keyIterator from './keyIterator';
import onlyOnce from './onlyOnce';
export default function _eachOfLimit(limit) {
return function (obj, iterator, callback) {
callback = once(callback || noop);
obj = obj || [];
var nextKey = keyIterator(obj);
if (limit <= 0) {
return callback(null);
}
var done = false;
var running = 0;
var errored = false;
(function replenish () {
if (done && running <= 0) {
return callback(null);
}
while (running < limit && !errored) {
var key = nextKey();
if (key === null) {
done = true;
if (running <= 0) {
callback(null);
}
return;
}
running += 1;
iterator(obj[key], key, onlyOnce(function (err) {
running -= 1;
if (err) {
callback(err);
errored = true;
}
else {
replenish();
}
}));
}
})();
};
}
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