How to use the eachOfSeries function from async

Find comprehensive JavaScript async.eachOfSeries code examples handpicked from public code repositorys.

async.eachOfSeries iterates over the elements of an array or object in a sequential manner and applies an asynchronous operation to each element.

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const mpx = compilation.__mpx__
if (mpx && !isEmptyObject(mpx.subpackagesEntriesMap)) {
  const subpackagesEntriesMap = mpx.subpackagesEntriesMap
  // 执行分包队列前清空mpx.subpackagesEntriesMap
  mpx.subpackagesEntriesMap = {}
  async.eachOfSeries(subpackagesEntriesMap, (deps, packageRoot, callback) => {
    mpx.currentPackageRoot = packageRoot
    mpx.componentsMap[packageRoot] = mpx.componentsMap[packageRoot] || {}
    mpx.staticResourcesMap[packageRoot] = mpx.staticResourcesMap[packageRoot] || {}
    mpx.subpackageModulesMap[packageRoot] = mpx.subpackageModulesMap[packageRoot] || {}
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// 最后更新时间无变化,记录并上报

FUNC_LIST_LATEST_UPDATE_TIME = latestUpdateTime;

async.eachOfSeries(CONNECTOR_GUANCE_MAP, function(connector, cgKey, eachCallback) {
  // 未登录的不上报
  if (!connector.client || !connector.client.__dffAuthed) return eachCallback();

  // 上报函数列表
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How does async.eachOfSeries work?

async.eachOfSeries is a control flow function provided by the Async library in JavaScript that executes an asynchronous function for each element in a given object or array in series, where each subsequent function call waits for the previous one to complete before starting.

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    })
  })
}    
async eachOfSeries(coll, iteratee) {    
  return new Promise(async (resolve, reject) => { 
    async.eachOfSeries(coll, iteratee, (err, res) => {
      if (err) { 
        reject(err)
      } else {
        resolve(res)
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async.forEach = async.each = function (arr, iterator, callback) {
	return async.eachOf(arr, _withoutIndex(iterator), callback);
};

async.forEachSeries = async.eachSeries = function (arr, iterator, callback) {
	return async.eachOfSeries(arr, _withoutIndex(iterator), callback);
};

async.forEachLimit = async.eachLimit = function (arr, limit, iterator, callback) {
	return _eachOfLimit(limit)(arr, _withoutIndex(iterator), callback);
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Ai Example

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const async = require("async");

const items = {
  item1: "value1",
  item2: "value2",
  item3: "value3",
};

async.eachOfSeries(
  items,
  (value, key, callback) => {
    console.log(`${key}: ${value}`);
    callback();
  },
  (err) => {
    if (err) {
      console.error(err.message);
    } else {
      console.log("All items have been processed successfully.");
    }
  }
);

In this example, async.eachOfSeries is used to iterate over an object items and perform some asynchronous operation on each item. The function passed as the second argument is called for each item in the object, with the value and key of the item passed as arguments. The function should call the callback function when it has completed processing the item. Finally, a callback function is passed as the third argument to be called when all items have been processed or an error has occurred. In this example, the key-value pairs of the items object are simply logged to the console.

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  console.log("!! error:",e);
}
Automation.actuator = {};
Automation.sensor = {};
// updating devices automation
async.eachOfSeries(rooms,(sector,key,next)=>{
  if(sector.name != null){
    Map.getItemsBySector(sector.name,(error,items)=>{
      if(items != null && items.length > 0){
        items.forEach((item)=>{
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// reduce only has a series version, as doing reduce in parallel won't
// work in many situations.
async.inject =
async.foldl =
async.reduce = function (arr, memo, iterator, callback) {
    async.eachOfSeries(arr, function (x, i, callback) {
        iterator(memo, x, function (err, v) {
            memo = v;
            callback(err);
        });
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