From 29a40049fb9234091da47a7c674189b936094f59 Mon Sep 17 00:00:00 2001
From: Matthieu Dumont <jerska@live.fr>
Date: Fri, 9 Dec 2016 15:29:37 +0100
Subject: [PATCH] feat(noConflict): new method to avoid window conflict

Closes #133
---
 src/standalone/index.js      | 11 +++++++++++
 test/unit/standalone_spec.js | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/src/standalone/index.js b/src/standalone/index.js
index 68201bb2d..2d4681bcc 100644
--- a/src/standalone/index.js
+++ b/src/standalone/index.js
@@ -71,4 +71,15 @@ function autocomplete(selector, options, datasets, typeaheadObject) {
 
 autocomplete.sources = Typeahead.sources;
 
+var wasAutocompleteSet = 'autocomplete' in window;
+var oldAutocomplete = window.autocomplete;
+autocomplete.noConflict = function noConflict() {
+  if (wasAutocompleteSet) {
+    window.autocomplete = oldAutocomplete;
+  } else {
+    delete window.autocomplete;
+  }
+  return autocomplete;
+};
+
 module.exports = autocomplete;
diff --git a/test/unit/standalone_spec.js b/test/unit/standalone_spec.js
index cfbfced24..83becb388 100644
--- a/test/unit/standalone_spec.js
+++ b/test/unit/standalone_spec.js
@@ -91,3 +91,37 @@ describe('Typeahead', function() {
   });
 
 });
+
+describe('noConflict()', function() {
+  it('should restore the previous value of autocomplete', function() {
+    window.autocomplete = 'test';
+
+    // Rerequire autocomplete
+    delete require.cache[require.resolve('../../src/standalone/index.js')];
+    var autocomplete = require('../../src/standalone/index.js');
+
+    expect(window.autocomplete).toBe('test');
+    window.autocomplete = autocomplete;
+
+    var aa = autocomplete.noConflict();
+    expect(aa).toBe(autocomplete);
+    expect(window.autocomplete).toBe('test');
+  });
+
+  it('should delete window.autocomplete if it wasn\'t set', function() {
+    if ('autocomplete' in window) {
+      delete window.autocomplete;
+    }
+
+    // Rerequire autocomplete
+    delete require.cache[require.resolve('../../src/standalone/index.js')];
+    var autocomplete = require('../../src/standalone/index.js');
+
+    expect('autocomplete' in window).toBe(false);
+    window.autocomplete = autocomplete;
+
+    var aa = autocomplete.noConflict();
+    expect(aa).toBe(autocomplete);
+    expect('autocomplete' in window).toBe(false);
+  });
+});