aaac7fed
 liuqimichale
add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// async-each MIT license (by Paul Miller from http://paulmillr.com).
(function(globals) {
'use strict';
var each = function(items, next, callback) {
if (!Array.isArray(items)) throw new TypeError('each() expects array as first argument');
if (typeof next !== 'function') throw new TypeError('each() expects function as second argument');
if (typeof callback !== 'function') callback = Function.prototype; // no-op
if (items.length === 0) return callback(undefined, items);
var transformed = new Array(items.length);
var count = 0;
var returned = false;
items.forEach(function(item, index) {
next(item, function(error, transformedItem) {
if (returned) return;
if (error) {
returned = true;
return callback(error);
}
transformed[index] = transformedItem;
count += 1;
if (count === items.length) return callback(undefined, transformed);
});
});
};
if (typeof define !== 'undefined' && define.amd) {
define([], function() {
return each;
}); // RequireJS
} else if (typeof module !== 'undefined' && module.exports) {
module.exports = each; // CommonJS
} else {
globals.asyncEach = each; // <script>
}
})(this);
|
