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-rw-r--r--ext/fg/js/source.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/fg/js/source.js b/ext/fg/js/source.js
index cbf0ce7d..bbf00e30 100644
--- a/ext/fg/js/source.js
+++ b/ext/fg/js/source.js
@@ -240,7 +240,7 @@ class TextSourceElement {
let consumed = 0;
let content = '';
- for (let currentChar of this.content) {
+ for (let currentChar of this.content || '') {
if (consumed >= length) {
break;
} else if (!currentChar.match(IGNORE_TEXT_PATTERN)) {