[runtime] Use globalThis before Function() (#480)

packages/runtime/runtime.js

@@ -738,12 +738,17 @@ try {
 } catch (accidentalStrictMode) {
   // This module should not be running in strict mode, so the above
   // assignment should always work unless something is misconfigured. Just
-  // in case runtime.js accidentally runs in strict mode, we can escape
+  // in case runtime.js accidentally runs in strict mode, in modern engines
+  // we can explicitly access globalThis. In older engines we can escape
   // strict mode using a global Function call. This could conceivably fail
   // if a Content Security Policy forbids using Function, but in that case
   // the proper solution is to fix the accidental strict mode problem. If
   // you've misconfigured your bundler to force strict mode and applied a
   // CSP to forbid Function, and you're not willing to fix either of those
   // problems, please detail your unique predicament in a GitHub issue.
-  Function("r", "regeneratorRuntime = r")(runtime);
+  if (typeof globalThis === "object") {
+    globalThis.regeneratorRuntime = runtime;
+  } else {
+    Function("r", "regeneratorRuntime = r")(runtime);
+  }
 }