$ npm install --save promise4solo
var solo = require('promise4solo')();
var now = function () {
this.start = this.start || Date.now();
return Date.now() - this.start;
};
var singAsync = function (ms) {
var self = this;
var ts = now();
if (!ms) {
throw new Error(ts + self.name + ' oops');
}
console.log(ts + self.name + ' begin sing ' + ms);
return new Promise(function (resolve) {
setTimeout(function () {
var end = now();
console.log(end + self.name + ' end sing ' + ms);
resolve(end);
}, ms);
});
};
var who = {
name: ' joey'
};
var singSolo = solo(singAsync, who);
var saySolo = solo(function (msg) {
console.log(now() + this.name + ' say ' + msg);
}, who);
singSolo(1000);
saySolo('hi');
singSolo().catch(function (err) {
console.log(err.message);
});
singSolo(100).then(function (end) {
console.log(end + ' done');
});
console.log(now() + ' start');
// Output:
// 0 start
// 3 joey begin sing 1000
// 1011 joey end sing 1000
// 1011 joey say hi
// 1011 joey oops
// 1012 joey begin sing 100
// 1118 joey end sing 100
// 1118 done
Return a solo wrap function, and the wrap function will return promise and guarantee one async function be run for order async flow.
var funcAsync = function(val){
return new Promise(function(resolve){
//...
resolve(val);
});
}
var funcSolo = solo(funcAsync);
funcSolo(true).then(function (val) {
});