add comment to getImporters

npm/vite-dev-server/src/makeCypressPlugin.ts

@@ -134,6 +134,12 @@ export const makeCypressPlugin = (
   }
 }
 
+/**
+ * Gets all the modules that import the set of modules passed in parameters
+ * @param modules the set of module whose dependents to return
+ * @param alreadyExploredFiles set of files that have already been looked at and should be avoided in case of circular dependency
+ * @returns a set of ModuleMode that import directly the current modules
+ */
 function getImporters (modules: Set<ModuleNode>, alreadyExploredFiles: Set<string>): Set<ModuleNode> {
   const allImporters = new Set<ModuleNode>()