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'use strict';
import eachOfLimit from './internal/eachOfLimit';
import withoutIndex from './internal/withoutIndex';
/**
* The same as `each` but runs a maximum of `limit` async operations at a time.
*
* @name eachLimit
* @static
* @memberOf async
* @see async.each
* @alias forEachLimit
* @category Collection
* @param {Array|Object} coll - A colleciton to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {Function} iteratee - A function to apply to each item in `coll`. The
* iteratee is passed a `callback(err)` which must be called once it has
* completed. If no error has occurred, the `callback` should be run without
* arguments or with an explicit `null` argument. The array index is not passed
* to the iteratee. Invoked with (item, callback). If you need the index, use
* `eachOfLimit`.
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
*/
export default function eachLimit(arr, limit, iteratee, cb) {
return eachOfLimit(limit)(arr, withoutIndex(iteratee), cb);
}
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