Function add

plugin/node_resolve.js:54–56

(obj)

      if (!packageFile) return null;

      function add(obj) {
        for (var name in obj) if (!(name in knownModules)) knownModules[name] = null;
      }
      add(packageFile.dependencies);
      add(packageFile.devDependencies);
      add(packageFile.peerDependencies);