javascript – async.eachSeries in node.js

javascript – async.eachSeries in node.js

Assuming check accepts a callback, we can use mapSeries to achieve that.

async.mapSeries(files, function(file, outerCB) {
  var all = fs.readdirsync(./0);
  async.mapSeries(all, function(item, cb){
      check(item, cb);
  }, outerCB);
}, function(err, results) {
  // This is called when everythings done
});

Outer loop needs to be async also. One of the the methods is to use 2 eachSeries loops or outer loop can be in parallel (each) if the files dont have to be processed in series:

var async = require(async);

async.eachSeries(files, function(file, outCb) 
{
  var all = fs.readFileSync(file);

  async.eachSeries(all, function(item, inCb) 
  {
    check(item);
    inCb(null);  // inner callback
  }, 
  function(err) 
  {
    outCb(null);  // outer callback
  });
},
function(err) 
{
  console.log(all done!!!);
});

javascript – async.eachSeries in node.js

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