Merge branch 'develop' into a11y-improvements

# Conflicts:
#	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
#	src/js/controls.js
#	src/js/fullscreen.js
#	src/js/plyr.js
#	src/js/ui.js
#	src/js/utils.js

1 files changed, 42 insertions, 0 deletions

diff --git a/src/js/utils/objects.js b/src/js/utils/objects.js
new file mode 100644
index 00000000..225bb459
--- /dev/null
+++ b/src/js/utils/objects.js
@@ -0,0 +1,42 @@
+// ==========================================================================
+// Object utils
+// ==========================================================================
+
+import is from './is';
+
+// Clone nested objects
+export function cloneDeep(object) {
+    return JSON.parse(JSON.stringify(object));
+}
+
+// Get a nested value in an object
+export function getDeep(object, path) {
+    return path.split('.').reduce((obj, key) => obj && obj[key], object);
+}
+
+// Deep extend destination object with N more objects
+export function extend(target = {}, ...sources) {
+    if (!sources.length) {
+        return target;
+    }
+
+    const source = sources.shift();
+
+    if (!is.object(source)) {
+        return target;
+    }
+
+    Object.keys(source).forEach(key => {
+        if (is.object(source[key])) {
+            if (!Object.keys(target).includes(key)) {
+                Object.assign(target, { [key]: {} });
+            }
+
+            extend(target[key], source[key]);
+        } else {
+            Object.assign(target, { [key]: source[key] });
+        }
+    });
+
+    return extend(target, ...sources);
+}