51Degrees Device Detection Node.js  4.4

51Degrees Device Detection for Node.js


This example shows how to use the 51Degrees Cloud service to lookup the details of a device based on a given 'native model name'. Native model name is a string of characters that are returned from a query to the device's OS. There are different mechanisms to get native model names for Android devices and iOS devices

This example is available in full on GitHub.

Required npm Dependencies:

  • fiftyone.pipeline.cloudrequestengine
  • fiftyone.pipeline.core
  • fiftyone.pipeline.engines
  • fiftyone.pipeline.engines.fiftyone
  • fiftyone.devicedetection.cloud
/* *********************************************************************
* This Original Work is copyright of 51 Degrees Mobile Experts Limited.
* Copyright 2023 51 Degrees Mobile Experts Limited, Davidson House,
* Forbury Square, Reading, Berkshire, United Kingdom RG1 3EU.
* This Original Work is licensed under the European Union Public Licence
* (EUPL) v.1.2 and is subject to its terms as set out below.
* If a copy of the EUPL was not distributed with this file, You can obtain
* one at https://opensource.org/licenses/EUPL-1.2.
* The 'Compatible Licences' set out in the Appendix to the EUPL (as may be
* amended by the European Commission) shall be deemed incompatible for
* the purposes of the Work and the provisions of the compatibility
* clause in Article 5 of the EUPL shall not apply.
* If using the Work as, or as part of, a network application, by
* including the attribution notice(s) required under Article 5 of the EUPL
* in the end user terms of the application under an appropriate heading,
* such notice(s) shall fulfill the requirements of that article.
* ********************************************************************* */
const path = require('path');
const require51 = (requestedPackage) => {
try {
return require(path.join(__dirname, '/../../../node_modules/', requestedPackage));
} catch (e) {
return require(path.join(__dirname, '/../../../../', requestedPackage));
// Require the core Pipeline and Cloud Request Engine
const pipelineCore = require51('fiftyone.pipeline.core');
const CloudRequestEngine = require51('fiftyone.pipeline.cloudrequestengine');
// Note that this example is designed to be run from within the
// device detection code base. If this code has been copied to run
// standalone then you'll need to replace the require below with the
// commented out version below it.
const HardwareProfileCloudEngine = require51('fiftyone.devicedetection.cloud').HardwareProfileCloudEngine;
const ExampleUtils = require(path.join(__dirname, '/../exampleUtils'));
const constants = require(path.join(__dirname, '/../../../constants.js'));
const DataExtension = require51('fiftyone.devicedetection.shared').dataExtension;
const analyseNativeModel = async function (nativemodel, pipeline, output) {
// Create a flow data instance.
const flowData = pipeline.createFlowData();
// After creating a flowdata instance, add the native model name as evidence.
flowData.evidence.add(constants.EVIDENCE_QUERY_NATIVE_MODEL_KEY, nativemodel);
await flowData.process();
output.write('Which devices are associated with the native model name ' +
// The result is an array containing the details of any devices that match
// the specified native model name.
// The code in this example iterates through this array, outputting the
// vendor and model of each matching device.
flowData.hardware.profiles.forEach(profile => {
const hardwareVendor = DataExtension.getValueHelper(profile, 'hardwarevendor');
const hardwareName = DataExtension.getValueHelper(profile, 'hardwarename');
const hardwareModel = DataExtension.getValueHelper(profile, 'hardwaremodel');
output.write(`\t${hardwareVendor} ${hardwareName} (${hardwareModel})\n`);
const run = async function (resourceKey, output) {
output.write('This example finds the details of devices from the ' +
'\'native model name\'.\n');
output.write('The native model name can be retrieved by code running ' +
'on the device (For example, a mobile app).\n');
output.write('For Android devices, see ' +
output.write('For iOS devices, see ' +
// This example creates the pipeline and engines in code. For a demonstration
// of how to do this using a configuration file instead, see the TacLookup example.
// For more information about builders in general see the documentation at
// https://51degrees.com/documentation/_concepts__configuration__builders__index.html
const requestEngineInstance = new CloudRequestEngine.CloudRequestEngine({
// Create the hardware profile engine to process the response from the
// request engine.
const hardwareProfileCloudEngineInstance = new HardwareProfileCloudEngine();
// Create the pipeline using the engines.
const PipelineBuilder = pipelineCore.PipelineBuilder;
const pipeline = new PipelineBuilder()
// Logging of errors and other messages. Valid logs types are info, debug,
// warn, error
pipeline.on('error', console.error);
const nativeModelAndroid = 'SC-03L';
const nativeModeliOS = 'iPhone11,8';
await analyseNativeModel(nativeModelAndroid, pipeline, output);
await analyseNativeModel(nativeModeliOS, pipeline, output);
// Don't run the server if under TEST
if (process.env.JEST_WORKER_ID === undefined) {
const args = process.argv.slice(2);
// Use the supplied resource key or try to obtain one
// from the environment variable.
const resourceKey = args.length > 0 ? args[0] : process.env[ExampleUtils.RESOURCE_KEY_ENV_VAR];
if (resourceKey) {
run(resourceKey, process.stdout);
} else {
console.error('No resource key specified on the command line or in the ' +
`the environment variable '${ExampleUtils.RESOURCE_KEY_ENV_VAR}'. ` +
'The 51Degrees cloud service is accessed using a \'ResourceKey\'. ' +
'For more information ' +
'see https://51degrees.com/documentation/_info__resource_keys.html. ' +
'Native model lookup is not available as a free service. This means that ' +
'you will first need a license key, which can be purchased from our ' +
'pricing page: https://51degrees.com/pricing. Once this is done, a resource ' +
'key with the properties required by this example can be created at ' +
'https://configure.51degrees.com/QKyYH5XT. You can now populate the ' +
'environment variable mentioned at the start of this message with the ' +
'resource key or pass it as the first argument on the command line.');
module.exports = {