fix(default-location): don't default to [0,0] for defaultPosition (#550)

* fix(default-location): don't provide any default values for defaultPosition

Completely removes the default value for defaultPosition,
which means that geosearch ranking is not applied with
a possibly irrelevant [0,0] coordinate when the state is empty.
Only tries to do .join on well-formed arrays.

src/instantsearch/widget.js

@@ -4,8 +4,11 @@ import places from '../places.js';
  * The underlying structure for the Algolia Places instantsearch widget.
  */
 class AlgoliaPlacesWidget {
- constructor({ defaultPosition = [0, 0], ...placesOptions }) {
- this.defaultPosition = defaultPosition.join(',');
+ constructor({ defaultPosition, ...placesOptions }) {
+ if (defaultPosition instanceof Array && defaultPosition.length === 2) {
+ this.defaultPosition = defaultPosition.join(',');
+ }
+
  this.placesOptions = placesOptions;
  }
  init({ helper }) {

src/instantsearch/widget.test.js

@@ -49,7 +49,7 @@ describe('instantsearch widget', () => {
 
  expect(helper.getState()).toMatchObject({
  insideBoundingBox: undefined,
- aroundLatLng: '0,0',
+ aroundLatLng: undefined,
  });
  });