Disable alternatives by default.

Author: willwhite

src/actions/index.js

@@ -52,13 +52,13 @@ function setHoverMarker(feature) {
 
 function fetchDirections() {
   return (dispatch, getState) => {
-    const { api, accessToken, routeIndex, profile } = getState();
+    const { api, accessToken, routeIndex, profile, alternatives } = getState();
     const query = buildDirectionsQuery(getState);
 
     // Request params
     var options = [];
     options.push('geometries=polyline');
-    options.push('alternatives=true');
+    if (alternatives) options.push('alternatives=true');
     options.push('steps=true');
     options.push('overview=full');
     options.push('access_token=' + accessToken);

src/directions.js

@@ -24,6 +24,7 @@ import Instructions from './controls/instructions';
  * @param {String} [options.accessToken=null] Required unless `mapboxgl.accessToken` is set globally
  * @param {Boolean} [options.interactive=true] Enable/Disable mouse or touch interactivity from the plugin
  * @param {String} [options.profile="driving-traffic"] Routing profile to use. Options: `driving-traffic`, `driving`, `walking`, `cycling`
+ * @param {Boolean} [options.alternatives=true] Whether to enable alternatives.
  * @param {String} [options.unit="imperial"] Measurement system to be used in navigation instructions. Options: `imperial`, `metric`
  * @param {Object} [options.geocoder] Pass options available to mapbox-gl-geocoder as [documented here](https://github.com/mapbox/mapbox-gl-geocoder/blob/master/API.md#mapboxglgeocoder).
  * @param {Object} [options.controls]
@@ -109,7 +110,7 @@ export default class MapboxDirections {
   }
 
   mapState() {
-    const { profile, styles, interactive } = store.getState();
+    const { profile, alternatives, styles, interactive } = store.getState();
 
     // Emit any default or option set config
     this.actions.eventEmit('profile', { profile });

src/reducers/index.js

@@ -5,6 +5,7 @@ const initialState = {
   // Options set on initialization
   api: 'https://api.mapbox.com/directions/v5/',
   profile: 'driving-traffic',
+  alternatives: false,
   unit: 'imperial',
   proximity: false,
   styles: [],