Google Maps Routing: Node.js Client

client for Node.js

A comprehensive list of changes in each version may be found in the CHANGELOG.

• Google Maps Routing Node.js Client API Reference

• github.com/googleapis/google-cloud-node/packages/google-maps-routing

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

Before you begin

1. Select or create a Cloud Platform project.
2. Enable billing for your project.
3. Enable the Google Maps Routing API.
4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @googlemaps/routing

Using the client library

/**
 * This snippet has been automatically generated and should be regarded as a code template only.
 * It will require modifications to work.
 * It may require correct/in-range values for request initialization.
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. Origin waypoint.
 */
// const origin = {}
/**
 *  Required. Destination waypoint.
 */
// const destination = {}
/**
 *  Optional. A set of waypoints along the route (excluding terminal points),
 *  for either stopping at or passing by. Up to 25 intermediate waypoints are
 *  supported.
 */
// const intermediates = 1234
/**
 *  Optional. Specifies the mode of transportation.
 */
// const travelMode = {}
/**
 *  Optional. Specifies how to compute the route. The server
 *  attempts to use the selected routing preference to compute the route. If
 *   the routing preference results in an error or an extra long latency, then
 *  an error is returned. In the future, we might implement a fallback
 *  mechanism to use a different option when the preferred option does not give
 *  a valid result. You can specify this option only when the `travel_mode` is
 *  `DRIVE` or `TWO_WHEELER`, otherwise the request fails.
 */
// const routingPreference = {}
/**
 *  Optional. Specifies your preference for the quality of the polyline.
 */
// const polylineQuality = {}
/**
 *  Optional. Specifies the preferred encoding for the polyline.
 */
// const polylineEncoding = {}
/**
 *  Optional. The departure time. If you don't set this value, then this value
 *  defaults to the time that you made the request. If you set this value to a
 *  time that has already occurred, then the request fails.
 */
// const departureTime = {}
/**
 *  Optional. Specifies whether to calculate alternate routes in addition to the route.
 */
// const computeAlternativeRoutes = true
/**
 *  Optional. A set of conditions to satisfy that affect the way routes are
 *  calculated.
 */
// const routeModifiers = {}
/**
 *  Optional. The BCP-47 language code, such as "en-US" or "sr-Latn". For more
 *  information, see
 *  http://www.unicode.org/reports/tr35/#Unicode_locale_identifier. See
 *  Language Support (https://developers.google.com/maps/faq#languagesupport)
 *  for the list of supported languages. When you don't provide this value, the
 *  display language is inferred from the location of the route request.
 */
// const languageCode = 'abc123'
/**
 *  Optional. Specifies the units of measure for the display fields. This
 *  includes the `instruction` field in `NavigationInstruction`. The units of
 *  measure used for the route, leg, step distance, and duration are not
 *  affected by this value. If you don't provide this value, then the display
 *  units are inferred from the location of the request.
 */
// const units = {}

// Imports the Routing library
const {RoutesClient} = require('@googlemaps/routing').v2;

// Instantiates a client
const routingClient = new RoutesClient();

async function callComputeRoutes() {
  // Construct request
  const request = {
    origin,
    destination,
  };

  // Run request
  const response = await routingClient.computeRoutes(request);
  console.log(response);
}

callComputeRoutes();

Samples

Samples are in the samples/ directory. Each sample's README.md has instructions for running its sample.

| Sample | Source Code | Try it | | --------------------------- | --------------------------------- | ------ | | Routes.compute_route_matrix | source code | | | Routes.compute_routes | source code | | | Quickstart | source code | |

The Google Maps Routing Node.js Client API Reference documentation also contains samples.

Supported Node.js Versions

Our client libraries follow the Node.js release schedule. Libraries are compatible with all current active and maintenance versions of Node.js. If you are using an end-of-life version of Node.js, we recommend that you update as soon as possible to an actively supported LTS version.

Google's client libraries support legacy versions of Node.js runtimes on a best-efforts basis with the following warnings:

• Legacy versions are not tested in continuous integration.
• Some security patches and features cannot be backported.
• Dependencies cannot be kept up-to-date.

Client libraries targeting some end-of-life versions of Node.js are available, and can be installed through npm dist-tags. The dist-tags follow the naming convention legacy-(version). For example, npm install @googlemaps/routing@legacy-8 installs client libraries for versions compatible with Node.js 8.

Versioning

This library follows Semantic Versioning.

This library is considered to be in preview. This means it is still a work-in-progress and under active development. Any release is subject to backwards-incompatible changes at any time.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

Please note that this README.md, the samples/README.md, and a variety of configuration files in this repository (including .nycrc and tsconfig.json) are generated from a central template. To edit one of these files, make an edit to its templates in directory.

License

Apache Version 2.0

See LICENSE