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How to use the series function from async

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

async.series is a function in the Async library for Node.js that executes a list of asynchronous functions in series, each one running only after the previous one has completed.

kafkaClient.js

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  return;
}

logger.debug(`Connect attempt ${currentAttempt}`);

async.series(
  [
    callback => {
      this.connectToBrokers(this.initialHosts, callback);
    },

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upgrade.js

GitHub: patchedsoul/adapt_authoring

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    callback(null, data);
  });
}

function doUpdate(data) {
  async.series([
    function upgradeAuthoring(cb) {
      if(!data.adapt_authoring) {
        return cb();
      }

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How does async.series work?

async.series is a function in the Async library for Node.js that takes an array of asynchronous functions and a final callback function as arguments. It then executes the functions in the array in series, with each function being called only after the previous function has completed.

The asynchronous functions in the array can be defined using either the traditional Node.js callback style (i.e., with a callback function that is passed as the final argument), or they can return a Promise.

When all the functions in the array have completed, async.series invokes the final callback function, passing in an array of results from each function in the order that they were executed.

If any of the asynchronous functions in the series encounters an error, async.series immediately invokes the final callback with the error as the first argument, without executing the remaining functions in the array.

Overall, async.series allows developers to run a list of asynchronous functions in a specific order, and to handle any errors that may occur during their execution.

index.js

GitHub: tomayac/local-reverse-geocoder

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          })
      );
      return innerCallback(null, result);
    };
  });
  async.series(functions, function (err, results) {
    debug('Delivering joint results');
    return callback(null, results);
  });
},

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+ 37 other calls in file

versioning.js

GitHub: scality/cloudserver

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    return process.nextTick(callback, null, options);
}
// bucket is versioning configured
const { options, nullVersionId, delOptions } =
      processVersioningState(mst, vCfg.Status);
return async.series([
    function storeVersion(next) {
        if (!nullVersionId) {
            return process.nextTick(next);
        }

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+ 3 other calls in file

Ai Example

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const async = require("async");

async.series(
  [
    function (callback) {
      setTimeout(function () {
        console.log("Task 1");
        callback(null, "one");
      }, 2000);
    },
    function (callback) {
      setTimeout(function () {
        console.log("Task 2");
        callback(null, "two");
      }, 1000);
    },
  ],
  function (err, results) {
    console.log(results);
  }
);

In this example, we define an array of two functions, each of which simulates an asynchronous task using setTimeout. The first function has a timeout of 2 seconds, while the second function has a timeout of 1 second. When async.series is called with this array, it runs the functions in series, waiting for the first function to complete before starting the second one. Once both functions have completed, it invokes the final callback function, passing in an array of results that correspond to the order in which the functions were executed. In this case, the output would be: arduino Copy code

server.js

GitHub: scality/cloudserver

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        this.worker.kill();
    }
}

initiateStartup(log) {
    series([
        next => metadata.setup(next),
        next => clientCheck(true, log, next),
    ], (err, results) => {
        if (err) {

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+ 2 other calls in file

commandsAmqp-test.js

GitHub: telefonicaid/iotagent-json

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    amqpConn.close();

    config.defaultTransport = oldTransport;

    async.series([iotAgentLib.clearAll, iotagentMqtt.stop], done);
});

describe('When a command arrive to the Agent for a device with the AMQP protocol', function () {
    const commandOptions = {

+ 5 other calls in file

jquery.reading-helper.js

GitHub: megumiimai/jquery-kanji-reading-helper

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* @param {Function} [callback] - An optional callback to run once all the
* functions have completed. This function gets a results array (or object)
* containing all the result arguments passed to the `task` callbacks. Invoked
* with (err, result).
* @example
* async.series([
*     function(callback) {
*         // do some stuff ...
*         callback(null, 'one');
*     },

+ 3 other calls in file

Discogs.js

GitHub: StephenGregory/google-music-desktop-wallpapers

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        ],
            callback);
    }
};

async.series(async.reflectAll(tasks),
    (error, results) => {
        if (results.thumbnailBuffer.error) {
            return callback(new Error('Could not get thumbail image for comparison'));
        }

note.js

GitHub: libnewton/hedgenext-server

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  const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
  const result = id.match(uuidRegex)
  if (result && result.length === 1) { return true } else { return false }
}
Note.parseNoteId = function (noteId, callback, noShort = false) {
  async.series({
    parseNoteIdByAlias: function (_callback) {
      // try to parse note id by alias (e.g. doc)
      Note.findOne({
        where: {

file.helper.js

GitHub: PyerX/video-editor-app

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            series_callback(err);
        }
    });
});

async.series(seriesTasks, (err) => {
    if (!err) {
        responseHelper.onSuccess(callback, metadata);
    } else {
        responseHelper.onError('error: putMediaToCloud' + err, callback);

frame.service.js

GitHub: PyerX/video-editor-app

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            });
        }
    });
});

async.series(seriesTasks, function (err, res) {
    if (err) {
        helper.response.onError(err, callback);
        return;
    } else {

feed.controller.js

GitHub: emily-sear/CSC560

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            }
        });
    }
]

async.series(subFeedTasks, function finalizer(err, results) {
    if (null == resultStatus) {
        res.status(200);
    } else {
        res.status(resultStatus);

+ 6 other calls in file

ProjectController.js

GitHub: overleaf/overleaf

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    { publicAccessLevel: req.body.publicAccessLevel, status: 'OK' },
    callback
  )
)

async.series(jobs, error => {
  if (error != null) {
    return next(error)
  }
  res.sendStatus(204)

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+ 8 other calls in file

HealthChecker.js

GitHub: overleaf/overleaf

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        })
      },
      cb => db.docs.deleteOne({ _id: docId, project_id: projectId }, cb),
      cb => db.docOps.deleteOne({ doc_id: docId }, cb),
    ]
    return async.series(jobs, callback)
  },
}

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+ 2 other calls in file

ArchiveDocsTests.js

GitHub: overleaf/overleaf

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          return callback()
        })
      }
    })(doc)
  )
  return async.series(jobs, done)
})

it('should set the docs in s3 correctly', function (done) {
  const jobs = Array.from(this.docs).map(doc =>

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ProjectRootDocManager.js

GitHub: overleaf/overleaf

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        })
      }
    }
)

return async.series(jobs, function (rootDocId) {
  if (rootDocId != null) {
    return ProjectEntityUpdateHandler.setRootDoc(
      projectId,
      rootDocId,

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UpdatesManager.js

GitHub: overleaf/overleaf

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        projectId,
        err => cb(null, { failed: err != null, project_id: projectId })
      )
    ))(projectId)
}
return async.series(jobs, function (error, result) {
  let x
  if (error != null) {
    return callback(error)
  }

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baseDao.js

GitHub: bluemind7788/zhuoma-dian

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        })
    };
    funcAry.push(temp);
});

async.series(funcAry, function (err, result) {
    console.log("transaction error: " + err);
    if (err) {
        connection.rollback(function (err) {
            console.log("transaction error: " + err);

build-modules.js

GitHub: AdrianTopete/AdrianTopete.github.io

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  actions.push(file.write(path.join(fpPath, '_falseOptions.js'), template._falseOptions()));
  actions.push(file.write(path.join(fpPath, '_util.js'), template._util()));
  actions.push(file.write(path.join(target, 'fp.js'), template.fp()));
  actions.push(file.write(path.join(fpPath, 'convert.js'), template.convert()));


  async.series(actions, util.pitch);
}


build(_.last(process.argv));

runtime.js

GitHub: mehdigoom/ValjangEngine-3.0.x-server

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        if(!finalAttempt && opts.interval > 0){
            attempts.push(retryInterval(opts.interval));
        }
    }

    async.series(attempts, function(done, data){
        data = data[data.length - 1];
        (wrappedCallback || opts.callback)(data.err, data.result);
    });
}

+ 21 other calls in file

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