10 examples of 'node js async parallel example' in JavaScript

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27function benchAsyncParallel (done) {
28 async.parallel([somethingA, somethingA, somethingA], done)
29}
9function example() {
10 const err = erotic()
11 setTimeout(() => {
12 throw err('example error')
13 }, 10)
14}
16function parallel(done) {
17 var async = require('async');
18 var asyncDone = require('async-done');
19
20 var context = this;
21 var tasks = context.tasks;
22
23 async.map(tasks, function (task, itemDone) {
24 asyncDone(function (taskDone) {
25 return task.run.call(context, taskDone);
26 }, itemDone);
27 }, done);
28}
1052asyncFunction(node, body) {
1053 let head = 'function';
1054
1055 if (node.identifier)
1056 head += ' ' + node.identifier.text;
1057
1058 let outerParams = node.params.map((x, i) => {
1059 let p = x.pattern || x.identifier;
1060 return p.type === 'Identifier' ? p.value : '__$' + i;
1061 }).join(', ');
1062
1063 let wrapper = node.kind === 'async-generator' ? 'asyncGen' : 'async';
1064
1065 if (body === undefined)
1066 body = node.body.text;
1067
1068 this.markRuntime('async');
1069
1070 return `${ head }(${ outerParams }) { ` +
1071 `return _esdown.${ wrapper }(function*(${ this.joinList(node.params) }) ` +
1072 `${ body }.apply(this, arguments)); }`;
1073}
588function asyncJS(js, fn) {
589 return new AsyncQueue(js, fn);
590}
50function webpackAsync(webpackConfig): Promise {
51 return new Promise((resolve, reject) => {
52 const compiler = webpack(webpackConfig)
53 compiler.run((err, stats) => {
54 const statsJson = stats.toJson()
55 const { errors, warnings } = statsJson
56
57 if (err) {
58 log('Webpack compiler encountered a fatal error.')
59 reject(new PluginError('webpack', err.toString()))
60 }
61 if (errors.length > 0) {
62 log('Webpack compiler encountered errors.')
63 reject(new PluginError('webpack', errors.toString()))
64 }
65 if (warnings.length > 0) {
66 log('Webpack compiler encountered warnings.')
67 reject(new PluginError('webpack', warnings.toString()))
68 }
69
70 resolve(statsJson)
71 })
72 })
73}
112(function ManyInstancesAsync() {
113 print('ManyInstancesAsync...');
114 let promise = WebAssembly.compile(buffer);
115 assertPromiseResult(promise, compiled_module => {
116 let instance_1 = new WebAssembly.Instance(compiled_module);
117 let instance_2 = new WebAssembly.Instance(compiled_module);
118 assertTrue(instance_1 != instance_2);
119 });
120})();
34return function asyncFunction() {
35 const args = Array.from(arguments);
36 return new Promise(function (resolve, reject) {
37 let gen;
38
39 function step(next) {
40 const value = next.value;
41 if (next.done) {
42 return resolve(value);
43 }
44 if (value instanceof Promise) {
45 return value.then(
46 result => step(gen.next(result)),
47 error => {
48 try {
49 step(gen.throw(error));
50 } catch (err) {
51 throw err;
52 }
53 }
54 ).catch((err) => {
55 warn("Unhandled error in async function.", err);
56 reject(err);
57 });
58 }
59 step(gen.next(value));
60 }
61
62 if (typeof func !== "function") {
63 reject(new TypeError("Expected a Function."));
64 }
65 // not a generator, wrap it.
66 if (func.constructor.name !== "GeneratorFunction") {
67 gen = (function*() {
68 return func.call(self, ...args);
69 }());
70 } else {
71 gen = func.call(self, ...args);
72 }
73 try {
74 step(gen.next());
75 } catch (err) {
76 warn("The generator threw immediately.", err);
77 reject(err);
78 }
79 });
80};
261function async (args, state, output) {
262 assert(args.sync);
263 output.success({ async: 'async' });
264}
29module.exports = function parallel(tasks) {
30 if (Array.isArray(tasks)) {
31 return parallelArrayTasks(tasks);
32 } else if (typeof tasks === 'object') {
33 return parallelObjectTasks(tasks);
34 }
35
36 return Promise.reject(new Error('First argument to parallel must be an array or an object'));
37};

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