make sure we get a boolean

Author: dcodeIO

src/util/minimal.js

@@ -34,7 +34,7 @@ util.isNode = typeof global !== "undefined"
            && global
            && global.process
            && global.process.versions
-           && global.process.versions.node;
+           && typeof global.process.versions.node === "string";
 
 /**
  * Global object reference.