algolia_instant_search.js.liquid

   search: instantsearch({
      appId: algolia.config.app_id,
      apiKey: algolia.config.search_api_key,
      indexName: '' + algolia.config.index_prefix + 'products',
      searchParameters: {
       clickAnalytics: true
      },
      urlSync: {},
      searchFunction: function (searchFunctionHelper) {
        // Set query parameters here because they're not kept when someone
        // presses the Back button if set in the `init` function of a custom widget
        var helper = instant.search.helper;
        var page = helper.getPage();
        helper.setQueryParameter('highlightPreTag', '<span class="ais-highlight">');
        helper.setQueryParameter('highlightPostTag', '</span>');
        if (instant.distinct) {
          helper.setQueryParameter('distinct', true);
        }
        if (!!collectionFacetConstraint && !!collectionFacetValue) {
          helper.setQueryParameter('filters', 'collections:"' + collectionFacetValue + '"');
        }
        if (!!collectionFacetValue) {
          helper.setQueryParameter('ruleContexts', [ collectionFacetValue ]);
        }
        helper.setPage(page);
        searchFunctionHelper.search();
      }
    }),