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feat: Guard against missing window.CSSStyleSheet #1088

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Merged
merged 1 commit into from
Jan 13, 2023
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feat: Guard against missing window.CSSStyleSheet #1088

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feat: Guard against missing window.CSSStyleSheet
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@mydea
mydea committed Jan 10, 2023
commit f426d3e4785776e96d3711dfd4b97ccde7532d89
7 changes: 7 additions & 0 deletions packages/rrweb/src/record/observer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -536,6 +536,13 @@ function initStyleSheetObserver(
{ styleSheetRuleCb, mirror, stylesheetManager }: observerParam,
{ win }: { win: IWindow },
): listenerHandler {
if (!win.CSSStyleSheet || !win.CSSStyleSheet.prototype) {
// If, for whatever reason, CSSStyleSheet is not available, we skip the observation of stylesheets.
return () => {
// Do nothing
};
}

// eslint-disable-next-line @typescript-eslint/unbound-method
const insertRule = win.CSSStyleSheet.prototype.insertRule;
win.CSSStyleSheet.prototype.insertRule = function (
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