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-rw-r--r--runtime/js/40_signals.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/runtime/js/40_signals.js b/runtime/js/40_signals.js
index 9d3cd4092..41f25af67 100644
--- a/runtime/js/40_signals.js
+++ b/runtime/js/40_signals.js
@@ -26,7 +26,7 @@ function unbindSignal(rid) {
// Stores signal listeners and resource data. This has type of
// `Record<string, { rid: number | undefined, listeners: Set<() => void> }`
-const signalData = {};
+const signalData = { __proto__: null };
/** Gets the signal handlers and resource data of the given signal */
function getSignalData(signo) {