Merge branch 'develop' into css-variables

# Conflicts:
#	demo/dist/demo.css
#	demo/dist/demo.js
#	demo/dist/demo.js.map
#	demo/dist/demo.min.js
#	demo/dist/demo.min.js.map
#	dist/plyr.css
#	dist/plyr.js
#	dist/plyr.js.map
#	dist/plyr.min.js
#	dist/plyr.min.js.map
#	dist/plyr.polyfilled.js
#	dist/plyr.polyfilled.js.map
#	dist/plyr.polyfilled.min.js
#	dist/plyr.polyfilled.min.js.map
#	gulpfile.js
#	src/sass/components/captions.scss
#	src/sass/components/control.scss

1 files changed, 42 insertions, 0 deletions

diff --git a/src/js/utils/fetch.js b/src/js/utils/fetch.js
new file mode 100644
index 00000000..ee33ea7c
--- /dev/null
+++ b/src/js/utils/fetch.js
@@ -0,0 +1,42 @@
+// ==========================================================================
+// Fetch wrapper
+// Using XHR to avoid issues with older browsers
+// ==========================================================================
+
+export default function fetch(url, responseType = 'text') {
+    return new Promise((resolve, reject) => {
+        try {
+            const request = new XMLHttpRequest();
+
+            // Check for CORS support
+            if (!('withCredentials' in request)) {
+                return;
+            }
+
+            request.addEventListener('load', () => {
+                if (responseType === 'text') {
+                    try {
+                        resolve(JSON.parse(request.responseText));
+                    } catch (e) {
+                        resolve(request.responseText);
+                    }
+                } else {
+                    resolve(request.response);
+                }
+            });
+
+            request.addEventListener('error', () => {
+                throw new Error(request.status);
+            });
+
+            request.open('GET', url, true);
+
+            // Set the required response type
+            request.responseType = responseType;
+
+            request.send();
+        } catch (e) {
+            reject(e);
+        }
+    });
+}