Node.js SDK

This library is Node.js SDK for TravelTime API.
TravelTime API helps users find locations by journey time rather than using ‘as the crow flies’ distance.
Time-based searching gives users more opportunities for personalization and delivers a more relevant search.

For additional details see our TravelTime API Documentation.

Dependencies:

axios

Installation

npm

npm i traveltime-api

This package comes this TypeScript support.

Usage

Client Initialization

Before starting, the package needs to be configured with your account's application ID and Key, which can be found in the TravelTime Developer Portal Dashboard. To create an instance - you will need to create new TravelTimeClient class object with credentials you got from dashboard.

import { TravelTimeClient } from 'traveltime-api';

const travelTimeClient = new TravelTimeClient({
  apiKey: 'YOUR_API_KEY',
  applicationId: 'YOUR_APPLICATION_ID',
});

Now you'll be able to call all TravelTime API endpoints from travelTimeClient instance.

Every instance function returns Object with type of Promise<AxiosResponse<EndpointResponseType>>.

Isochrones (Time Map)

Given origin coordinates, find shapes of zones reachable within corresponding travel time. Find unions/intersections between different searches

Function accepts object that matches API json spec.

import {
  TimeMapRequestArrivalSearch,
  TimeMapRequestDepartureSearch,
  TimeMapRequestUnionOrIntersection,
} from 'traveltime-api';

const departure_search1: TimeMapRequestDepartureSearch = {
  id: 'public transport from Trafalgar Square',
  departure_time: new Date().toISOString(),
  travel_time: 900,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['is_only_walking'],
};
const departure_search2: TimeMapRequestDepartureSearch = {
  id: 'driving from Trafalgar Square',
  departure_time: new Date().toISOString(),
  travel_time: 900,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'driving' },
};
const arrival_search: TimeMapRequestArrivalSearch = {
  id: 'public transport to Trafalgar Square',
  arrival_time: new Date().toISOString(),
  travel_time: 900,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  range: { enabled: true, width: 3600 },
};
const union: TimeMapRequestUnionOrIntersection = {
  id: 'union of driving and public transport',
  search_ids: ['driving from Trafalgar Square', 'public transport from Trafalgar Square'],
};
const intersection: TimeMapRequestUnionOrIntersection = {
  id: 'intersection of driving and public transport',
  search_ids: ['driving from Trafalgar Square', 'public transport from Trafalgar Square'],
};

travelTimeClient.timeMap({
  departure_searches: [departure_search1, departure_search2],
  arrival_searches: [arrival_search],
  unions: [union],
  intersections: [intersection],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Distance Matrix (Time Filter)

Given origin and destination points filter out points that cannot be reached within specified time limit. Find out travel times, distances and costs between an origin and up to 2,000 destination points.

Function accepts object that matches API json spec.

import {
  LocationRequest,
  TimeFilterRequestArrivalSearch,
  TimeFilterRequestDepartureSearch,
} from 'traveltime-api';

const locations: LocationRequest[] = [
  {
    id: 'London center',
    coords: {
      lat: 51.508930,
      lng: -0.131387,
    },
  },
  {
    id: 'Hyde Park',
    coords: {
      lat: 51.508824,
      lng: -0.167093,
    },
  },
  {
    id: 'ZSL London Zoo',
    coords: {
      lat: 51.536067,
      lng: -0.153596,
    },
  },
];

const departure_search: TimeFilterRequestDepartureSearch = {
  id: 'forward search example',
  departure_location_id: 'London center',
  arrival_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  transportation: { type: 'bus' },
  departure_time: new Date().toISOString(),
  travel_time: 1800,
  properties: ['travel_time'],
  range: { enabled: true, max_results: 3, width: 600 },
};

const arrival_search: TimeFilterRequestArrivalSearch = {
  id: 'backward search example',
  departure_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  arrival_location_id: 'London center',
  transportation: { type: 'public_transport' },
  arrival_time: new Date().toISOString(),
  travel_time: 1800,
  properties: ['travel_time', 'distance', 'distance_breakdown', 'fares'],
};

travelTimeClient.timeFilter({
  locations,
  departure_searches: [departure_search],
  arrival_searches: [arrival_search],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Routes

Returns routing information between source and destinations.

Function accepts object that matches API json spec.

import {
  LocationRequest,
  RoutesRequestArrivalSearch,
  RoutesRequestDepartureSearch,
} from 'traveltime-api';

const locations: LocationRequest[] = [
  { id: 'London center', coords: { lat: 51.508930, lng: -0.131387 } },
  { id: 'Hyde Park', coords: { lat: 51.508824, lng: -0.167093 } },
  { id: 'ZSL London Zoo', coords: { lat: 51.536067, lng: -0.153596 } },
];

const departure_search: RoutesRequestDepartureSearch = {
  id: 'departure search example',
  departure_location_id: 'London center',
  arrival_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  transportation: { type: 'driving' },
  departure_time: new Date().toISOString(),
  properties: ['travel_time', 'distance', 'route'],
};

const arrival_search: RoutesRequestArrivalSearch = {
  id: 'arrival  search example',
  departure_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  arrival_location_id: 'London center',
  transportation: { type: 'public_transport' },
  arrival_time: new Date().toISOString(),
  properties: ['travel_time', 'distance', 'route', 'fares'],
  range: { enabled: true, max_results: 1, width: 1800 },
};

travelTimeClient.routes({
  locations,
  departure_searches: [departure_search],
  arrival_searches: [arrival_search],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Time Filter (Fast)

A very fast version of time_filter(). However, the request parameters are much more limited. Currently only supports UK and Ireland.

Function accepts object that matches API json spec.

import {
  LocationRequest,
  TimeFilterFastRequestArrivalManyToOneSearch,
  TimeFilterFastRequestArrivalOneToManySearch,
} from 'traveltime-api';

const locations: LocationRequest[] = [
  { id: 'London center', coords: { lat: 51.508930, lng: -0.131387 } },
  { id: 'Hyde Park', coords: { lat: 51.508824, lng: -0.167093 } },
  { id: 'ZSL London Zoo', coords: { lat: 51.536067, lng: -0.153596 } },
];

const arrival_many_to_one: TimeFilterFastRequestArrivalManyToOneSearch = {
  id: 'arrive-at many-to-one search example',
  departure_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  arrival_location_id: 'London center',
  transportation: { type: 'public_transport' },
  arrival_time_period: 'weekday_morning',
  travel_time: 1900,
  properties: ['travel_time', 'fares'],
};
const arrival_one_to_many: TimeFilterFastRequestArrivalOneToManySearch = {
  id: 'arrive-at one-to-many search example',
  arrival_location_ids: ['Hyde Park', 'ZSL London Zoo'],
  departure_location_id: 'London center',
  transportation: { type: 'public_transport' },
  arrival_time_period: 'weekday_morning',
  travel_time: 1900,
  properties: ['travel_time', 'fares'],
};

travelTimeClient.timeFilterFast({
  locations,
  arrival_searches: {
    many_to_one: [arrival_many_to_one],
    one_to_many: [arrival_one_to_many],
  },
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Time Filter Fast (Proto)

Filter out points that cannot be reached within specified time limit.

Request Properties:

departureLocation: Original point.
destinationCoordinates: destination points. Cannot be more than 200,000.
transportation: transportation type.
travelTime: time limit;
country: return the results that are within the specified country

import { TravelTimeProtoClient, TimeFilterFastProtoRequest } from 'traveltime-api';

const travelTimeProtoClient = new TravelTimeProtoClient({
  apiKey: 'YOUR_API_KEY',
  applicationId: 'YOUR_APPLICATION_ID',
});

const requestData: TimeFilterFastProtoRequest = {
  country: 'uk',
  departureLocation: {
    lat: 51.508930,
    lng: -0.131387,
  },
  destinationCoordinates: [{
    lat: 51.508824,
    lng: -0.167093,
  }],
  transportation: 'driving+ferry',
  travelTime: 7200
};

travelTimeProtoClient.timeFilterFast(requestData)
  .then((data) => console.log(data))
  .catch((e) => console.error(e));

Time Filter (Postcode Districts)

Find districts that have a certain coverage from origin (or to destination) and get statistics about postcodes within such districts. Currently only supports United Kingdom.

Function accepts object that matches API json spec.

import {
  TimeFilterPostcodeDistrictsRequestArrivalSearch,
  TimeFilterPostcodeDistrictsRequestDepartureSearch,
} from 'traveltime-api';

const departure_search: TimeFilterPostcodeDistrictsRequestDepartureSearch = {
  id: 'public transport from Trafalgar Square',
  departure_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['coverage', 'travel_time_reachable', 'travel_time_all'],
  reachable_postcodes_threshold: 0.1,
};
const arrival_search: TimeFilterPostcodeDistrictsRequestArrivalSearch = {
  id: 'public transport to Trafalgar Square',
  arrival_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['coverage', 'travel_time_reachable', 'travel_time_all'],
  reachable_postcodes_threshold: 0.1,
};

travelTimeClient.timeFilterPostcodeDistricts({
  departure_searches: [departure_search],
  arrival_searches: [arrival_search],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Time Filter (Postcode Sectors)

Find sectors that have a certain coverage from origin (or to destination) and get statistics about postcodes within such sectors. Currently only supports United Kingdom.

Function accepts object that matches API json spec.

import {
  TimeFilterPostcodeSectorsRequestArrivalSearch,
  TimeFilterPostcodeSectorsRequestDepartureSearch,
} from 'traveltime-api';

const departure_search: TimeFilterPostcodeSectorsRequestDepartureSearch = {
  id: 'public transport from Trafalgar Square',
  departure_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['coverage', 'travel_time_reachable', 'travel_time_all'],
  reachable_postcodes_threshold: 0.1,
};
const arrival_search: TimeFilterPostcodeSectorsRequestArrivalSearch = {
  id: 'public transport to Trafalgar Square',
  arrival_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['coverage', 'travel_time_reachable', 'travel_time_all'],
  reachable_postcodes_threshold: 0.1,
};

travelTimeClient.timeFilterPostcodeSectors({
  departure_searches: [departure_search],
  arrival_searches: [arrival_search],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Time Filter (Postcodes)

Find reachable postcodes from origin (or to destination) and get statistics about such postcodes. Currently only supports United Kingdom.

Function accepts object that matches API json spec.

import {
  TimeFilterPostcodesRequestArrivalSearch,
  TimeFilterPostcodesRequestDepartureSearch,
} from 'traveltime-api';

const departure_search: TimeFilterPostcodesRequestDepartureSearch = {
  id: 'public transport from Trafalgar Square',
  departure_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['travel_time', 'distance'],
};
const arrival_search: TimeFilterPostcodesRequestArrivalSearch = {
  id: 'public transport to Trafalgar Square',
  arrival_time: new Date().toISOString(),
  travel_time: 1800,
  coords: { lat: 51.507609, lng: -0.128315 },
  transportation: { type: 'public_transport' },
  properties: ['travel_time', 'distance'],
};

travelTimeClient.timeFilterPostcodes({
  departure_searches: [departure_search],
  arrival_searches: [arrival_search],
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Geocoding (Search)

Match a query string to geographic coordinates.

Function accepts object that might has these properties:

acceptLanguage - Request geocoding results to be in specific language if it is available.
params - object that matches API json spec.

travelTimeClient.geocoding('Parliament square').then((data) => console.log(data))
.catch((e) => console.error(e));

Reverse Geocoding

Attempt to match a latitude, longitude pair to an address.

Function accepts object that might has these properties:

acceptLanguage - Request geocoding results to be in specific language if it is available.
params - object that matches API json spec.

travelTimeClient.geocodingReverse({
  params: {
    lat: 51.507281, lng: -0.132120,
  },
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

Map Info

Get information about currently supported countries.

travelTimeClient.mapInfo()
.then((data) => console.log(data))
.catch((e) => console.error(e));

Supported Locations

Find out what points are supported by the api.

Function accepts object that matches API json spec.

import {
  SupportedLocationsRequestLocation,
} from 'traveltime-api';

const locations: SupportedLocationsRequestLocation[] = [
  { id: 'Kaunas', coords: { lat: 54.900008, lng: 23.957734 } },
  { id: 'London', coords: { lat: 51.506756, lng: -0.128050 } },
  { id: 'Bangkok', coords: { lat: 13.761866, lng: 100.544818 } },
  { id: 'Lisbon', coords: { lat: 38.721869, lng: -9.138549 } },
];

travelTimeClient.supportedLocations({
  locations,
}).then((data) => console.log(data))
  .catch((e) => console.error(e));

TravelTime Error Response

If an error occurred in TravelTime api you can use TravelTimeError object to check and destructure error into a standard format.

import { TravelTimeError } from 'traveltime-api';

travelTimeClient.mapInfo()
  .then((data) => console.log(data))
  .catch((e) => {
      if(TravelTimeError.isTravelTimeError(e)) {
      // your error handling logic
    }
  });