process: hide NodeEnvironmentFlagsSet's add function

This makes sure that the `add` function is not visible by default when inspecting `process.allowedNodeEnvironmentFlags`. PR-URL: #28206 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Rich Trott <[email protected]>
nodejs · Jul 2, 2019 · e517b03 · e517b03
1 parent 993c0db
commit e517b03
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/internal/process/per_thread.js b/lib/internal/process/per_thread.js
@@ -263,7 +263,9 @@ function buildAllowedFlags() {
 
       // The super constructor consumes `add`, but
       // disallow any future adds.
-      this.add = () => this;
+      Object.defineProperty(this, 'add', {
+        value: () => this
+      });
     }
 
     delete() {