Promise-Statics.js
1.05 KB
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
Promise.all = Promise.all || function () {
var args = Array.prototype.slice.call(arguments.length === 1 && Array.isArray(arguments[0]) ? arguments[0] : arguments);
return new Promise(function (resolve, reject) {
if (args.length === 0) return resolve([]);
var remaining = args.length;
function res(i, val) {
try {
if (val && (typeof val === 'object' || typeof val === 'function')) {
var then = val.then;
if (typeof then === 'function') {
then.call(val, function (val) { res(i, val) }, reject);
return;
}
}
args[i] = val;
if (--remaining === 0) {
resolve(args);
}
} catch (ex) {
reject(ex);
}
}
for (var i = 0; i < args.length; i++) {
res(i, args[i]);
}
});
};
Promise.race = Promise.race || function (values) {
return new Promise(function (resolve, reject) {
for(var i = 0, len = values.length; i < len; i++) {
values[i].then(resolve, reject);
}
});
};