Optional to remove the lunr stopWordFilter

README.md

@@ -202,6 +202,8 @@ Responsible for defining global configuration. Look for full example here - [con
 
 - **`isExactSearch`** set to `true` if you want to always show exact search matches. See [lunr stemmer](https://github.com/olivernn/lunr.js/issues/328) and [lunr stopWordFilter](https://github.com/olivernn/lunr.js/issues/233).
 
+- **`removeStopWordFilter`** set to `true` if you want to remove the stopWordFilter. See https://github.com/itemsapi/itemsjs/issues/46.
+
 - **`is_all_filtered_items`** set to `true` if you want to return the whole filtered dataset. 
 
 ### itemsjs.aggregation(options)

src/fulltext.js

@@ -30,6 +30,14 @@ const Fulltext = function(items, config) {
       this.pipeline.remove(lunr.stemmer);
       this.pipeline.remove(lunr.stopWordFilter);
     }
+
+    /**
+     * Remove the stopWordFilter from the pipeline
+     * stopWordFilter: https://github.com/itemsapi/itemsjs/issues/46
+     */
+     if (config.removeStopWordFilter) {
+      this.pipeline.remove(lunr.stopWordFilter);
+    }
   });
 
   let i = 1;

tests/fulltextSpec.js

@@ -32,7 +32,8 @@ describe('fulltext', function() {
 
   const specialItems = [
     {'name': 'elation'},
-    {'name': 'source'}
+    {'name': 'source'},
+    {'name': 'headless'}
   ];
 
   it('checks search', function test(done) {
@@ -102,6 +103,29 @@ describe('fulltext', function() {
     done();
   });
 
+  it('makes search stepping through characters', function test(done) {
+    const stopwordfilter = new Fulltext(specialItems, {
+      searchableFields: ['name'],
+    });
+
+    const withoutstopwordfilter = new Fulltext(specialItems, {
+      searchableFields: ['name'],
+      removeStopWordFilter: true
+    });
+
+    assert.equal(stopwordfilter.search('h').length, 1);
+    assert.equal(stopwordfilter.search('he').length, 0); // The stopwordfilter filters out "he"
+    assert.equal(stopwordfilter.search('hea').length, 1);
+    assert.equal(stopwordfilter.search('head').length, 1);
+
+    assert.equal(withoutstopwordfilter.search('h').length, 1);
+    assert.equal(withoutstopwordfilter.search('he').length, 1); 
+    assert.equal(withoutstopwordfilter.search('hea').length, 1);
+    assert.equal(withoutstopwordfilter.search('head').length, 1);
+
+    done();
+  });
+
 
   xit('returns internal ids', function test(done) {