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-rw-r--r--lib/inspector.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/inspector.js b/lib/inspector.js
index 3285c1040a..f4ec71fd6c 100644
--- a/lib/inspector.js
+++ b/lib/inspector.js
@@ -12,7 +12,7 @@ const {
const util = require('util');
const { Connection, open, url } = process.binding('inspector');
-if (!Connection)
+if (!Connection || !require('internal/worker').isMainThread)
throw new ERR_INSPECTOR_NOT_AVAILABLE();
const connectionSymbol = Symbol('connectionProperty');