From 2782a6f3b15fca4876835902c2c472dcff20a26a Mon Sep 17 00:00:00 2001
From: martinandert <mandert@gmail.com>
Date: Sun, 10 Sep 2017 23:53:04 +0200
Subject: [PATCH] timeRangesToArray: handle ranges argument being undefined

This occurs when the media element initially has no src set.
---
 src/shared/dom.js                                 | 3 ++-
 test/js/samples/media-bindings/expected-bundle.js | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/shared/dom.js b/src/shared/dom.js
index 65c38061fff0..a96f3f29e087 100644
--- a/src/shared/dom.js
+++ b/src/shared/dom.js
@@ -103,6 +103,7 @@ export function toNumber(value) {
 }
 
 export function timeRangesToArray(ranges) {
+	if (!ranges) return [];
 	var array = [];
 	for (let i = 0; i < ranges.length; i += 1) {
 		array.push({ start: ranges.start(i), end: ranges.end(i) });
@@ -149,4 +150,4 @@ export function setInputType(input, type) {
 
 export function setStyle(node, key, value) {
 	node.style.setProperty(key, value);
-}
\ No newline at end of file
+}
diff --git a/test/js/samples/media-bindings/expected-bundle.js b/test/js/samples/media-bindings/expected-bundle.js
index 631999398cff..5acac422cc2b 100644
--- a/test/js/samples/media-bindings/expected-bundle.js
+++ b/test/js/samples/media-bindings/expected-bundle.js
@@ -34,6 +34,7 @@ function removeListener(node, event, handler) {
 }
 
 function timeRangesToArray(ranges) {
+	if (!ranges) return [];
 	var array = [];
 	for (let i = 0; i < ranges.length; i += 1) {
 		array.push({ start: ranges.start(i), end: ranges.end(i) });