worker_threads: fix workers isolation

Added strict mode inside the worker script. Fixes: #24947
nodejs · Dec 24, 2018 · f4642f3 · f4642f3
1 parent 0fffd47
commit f4642f3
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/internal/worker.js b/lib/internal/worker.js
@@ -453,7 +453,8 @@ function setupChild(evalScript) {
       port.unref();
       port.postMessage({ type: messageTypes.UP_AND_RUNNING });
       if (doEval) {
-        evalScript('[worker eval]', filename);
+        const src = `'use strict'; ${filename}`;
+        evalScript('[worker eval]', src);
       } else {
         process.argv[1] = filename; // script filename
         require('module').runMain();