[Enhancement] Storage folder inside other storage folder is a bad idea

I spent way too much time on this issue today, so this is for everybody doing the same dumb thing I did:

const nodePersist = require("node-persist");
const storage1 = nodePersist.create({ dir: ".node-persist/storage1" });
const storage1b = nodePersist.create({ dir: ".node-persist/storage1/storage1b" });

This will not work.

This will give you an extremely undescriptive error : EISDIR: illegal operation on a directory, read. I understand that this may not be the intended use, and it’s too much effort to make this possible, but a clearer error message, or a more detailed description in the readme would be very helpful, because I read ..., just avoid using the same dir for the storage location. as don't use the same directory multiple times.

[akhoury]

hmm… init() is async, can you wait for each to finish at first?

// use this if you don't have top-level await yet in your node version: https://v8.dev/features/top-level-await
(async () => {


  const productStorage = storage.create({ dir: 'cache_products',ttl: true, forgiveParseErrors: true }); 
  await productStorage.init();
  
  const reviewStorage = storage.create({ dir: 'cache_reviews',ttl: true, forgiveParseErrors: true }); 
  await reviewStorage.init(); 
  
  const suppliersStorage = storage.create({ dir: 'cache_suppliers',ttl: true, forgiveParseErrors: true }); 
  await suppliersStorage.init();


  // ... rest of your code here
})();

[towfiqi]

Thank you. That seems to have fixed the issue 😃