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import concatLimit from './concatLimit';
import awaitify from './internal/awaitify'
/**
* The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time.
*
* @name concatSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.concat]{@link module:Collections.concat}
* @category Collection
* @alias flatMapSeries
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`.
* The iteratee should complete with an array an array of results.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished, or an error occurs. Results is an array
* containing the concatenated results of the `iteratee` function. Invoked with
* (err, results).
* @returns A Promise, if no callback is passed
*/
function concatSeries(coll, iteratee, callback) {
return concatLimit(coll, 1, iteratee, callback)
}
export default awaitify(concatSeries, 3);
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