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'use strict';
import eachLimit from './eachLimit';
import doLimit from './internal/doLimit';
/**
* Applies the function `iteratee` to each item in `coll`, in parallel.
* The `iteratee` is called with an item from the list, and a callback for when
* it has finished. If the `iteratee` passes an error to its `callback`, the
* main `callback` (for the `each` function) is immediately called with the
* error.
*
* Note, that since this function applies `iteratee` to each item in parallel,
* there is no guarantee that the iteratee functions will complete in order.
*
* @name each
* @static
* @memberOf async
* @alias forEach
* @category Collection
* @param {Array|Object} coll - A collection to iterate over.
* @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 `eachOf`.
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @example
*
* // assuming openFiles is an array of file names and saveFile is a function
* // to save the modified contents of that file:
*
* async.each(openFiles, saveFile, function(err){
* // if any of the saves produced an error, err would equal that error
* });
*
* // assuming openFiles is an array of file names
* async.each(openFiles, function(file, callback) {
*
* // Perform operation on file here.
* console.log('Processing file ' + file);
*
* if( file.length > 32 ) {
* console.log('This file name is too long');
* callback('File name too long');
* } else {
* // Do work to process file here
* console.log('File processed');
* callback();
* }
* }, function(err) {
* // if any of the file processing produced an error, err would equal that error
* if( err ) {
* // One of the iterations produced an error.
* // All processing will now stop.
* console.log('A file failed to process');
* } else {
* console.log('All files have been processed successfully');
* }
* });
*/
export default doLimit(eachLimit, Infinity);
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