fix potential problem with address strings for v5 and v6

debug/mock-api.json

@@ -1,3 +1,66 @@
 [
-  {"id":"place.7673410831246050","type":"Feature","place_type":["place"],"relevance":1,"properties":{"wikidata":"Q61"},"text_en-US":"Washington","language_en-US":"en","place_name_en-US":"Washington, District of Columbia, United States of America","text":"Washington","language":"en","place_name":"SERVER: Washington, District of Columbia, United States of America","matching_place_name":"Washington, DC, United States of America","bbox":[-77.1197609567342,38.79155738,-76.909391,38.99555093],"center":[-77.0366,38.895],"geometry":{"type":"Point","coordinates":[-77.0366,38.895]},"context":[{"id":"region.14064402149979320","short_code":"US-DC","wikidata":"Q3551781","text_en-US":"District of Columbia","language_en-US":"en","text":"District of Columbia","language":"en"},{"id":"country.19678805456372290","wikidata":"Q30","short_code":"us","text_en-US":"United States of America","language_en-US":"en","text":"United States of America","language":"en"}]}
-]
+  {
+    "type": "Feature",
+    "id": "address.7840146147075390",
+    "geometry": {
+      "type": "Point",
+      "coordinates": [22.476772, -33.991656]
+    },
+    "properties": {
+      "mapbox_id": "address.7840146147075390",
+      "feature_type": "address",
+      "name": "12 Main Street",
+      "coordinates": {
+        "longitude": 22.476772,
+        "latitude": -33.991656,
+        "accuracy": "proximate"
+      },
+      "place_formatted": "George, Western Cape 6529, South Africa",
+      "match_code": {
+        "address_number": "matched",
+        "street": "unmatched",
+        "postcode": "unmatched",
+        "place": "unmatched",
+        "region": "unmatched",
+        "locality": "not_applicable",
+        "country": "inferred",
+        "confidence": "low"
+      },
+      "context": {
+        "address": {
+          "id": "address.7840146147075390",
+          "street": "Main Street",
+          "address_number": "12",
+          "name": "12 Main Street"
+        },
+        "neighborhood": {
+          "id": "neighborhood.1846526",
+          "name": "Ballotsview"
+        },
+        "postcode": {
+          "id": "postcode.24039166",
+          "name": "6529"
+        },
+        "place": {
+          "id": "place.24643838",
+          "name": "George",
+          "wikidata_id": "Q370456"
+        },
+        "region": {
+          "id": "region.9470",
+          "name": "Western Cape",
+          "wikidata_id": "Q127167",
+          "region_code": "WC",
+          "region_code_full": "ZA-WC"
+        },
+        "country": {
+          "id": "country.8958",
+          "name": "South Africa",
+          "wikidata_id": "Q258",
+          "country_code": "ZA",
+          "country_code_alpha_3": "ZAF"
+        }
+      }
+    }
+  }
+]

lib/index.js

@@ -393,7 +393,11 @@ MapboxGeocoder.prototype = {
           const feature = resp.body.features[0];
 
           if (feature) {
-            const locationText = utils.transformFeatureToGeolocationText(feature, this.options.addressAccuracy);
+            const locationText = utils.transformFeatureToGeolocationText(
+              feature,
+              this.options.addressAccuracy,
+              this.options.version
+            );
             this._setInputValue(locationText);
 
             feature.user_coordinates = geojson.geometry.coordinates;

lib/utils.js

@@ -2,10 +2,11 @@
  * This function transforms the feature from reverse geocoding to plain text with specified accuracy
  * @param {object} feature 
  * @param {string} accuracy 
+ * @param {'v5'|'v6'} version
  * @returns 
  */
-function transformFeatureToGeolocationText(feature, accuracy) {
-  const addrInfo = getAddressInfo(feature);
+function transformFeatureToGeolocationText(feature, accuracy, version) {
+  const addrInfo = getAddressInfo(feature, version);
 
   const addressAccuracy =  ['address', 'street', 'place', 'country'];
   var currentAccuracy;
@@ -35,15 +36,14 @@ function transformFeatureToGeolocationText(feature, accuracy) {
   }, '');
 }
 
-const isV5Feature = (feature) => "id" in feature;
-
 /**
  * This function transforms the feature from reverse geocoding to AddressInfo object
  * @param {object} feature 
+ * @param {'v5'|'v6'} version
  * @returns {object}
  */
-function getAddressInfo(feature) {
-  if(!isV5Feature(feature)) {
+function getAddressInfo(feature, version) {
+  if(version === 'v6') {
     return getV6AddressInfo(feature);
   }
   const houseNumber = feature.address || '';