Deleting Storage Folder throws error on first start

Hello,

Not sure if this is a Problem of node-persist or Node but when I delete the Storage Folder a ENOENT error is thrown on first start.

Error: ENOENT: no such file or directory, open 'd:\path\to\project\projectname\server\storage\hash'

It fixes itself if you just restart the app but It cripples my deployment script. Is there a Cache File somewhere I need to delete?

Thanks for the Help

[akhoury]

ok, so here’s what’s happening, you’re trying to setItem() before the storage has finished initializing, and creating the the storage directory, that’s why it only does it the first time, the second time the directory is already created.

When you use storage.init(), it’s asynchronous, you need to wait for it to be ready before you can use the storage

This is my fault, the example in the README was wrong, I just fixed it

you can solve this in 2 ways, either,

Wait for it to be done, before using it

storage.init().then(()=> {
    // start your app here.
});

OR

Use the synchronous version of init - this is OK if you are doing it once at app-load time, it will not really impact performance

storage.initSync();
// start your app here.

[Jan-Ka]

Thank you for the quick fix - i just tested it and it works fine.

Somehow I didn’t think of testing the Problem without setting a variable 😃

Code for reference:

const storage = require("node-persist");

let storageInit = storage.init({
    dir: "server/storage"
});

const argvs = process.argv.slice(2);

if (argvs[0] === "setup") {
    console.log("INIT", "SETITEM", "WAIT 5s", "EXIT");

// here be changes
    storageInit.then(() => {
        storage.setItem("demo",
            [
                {
                    "demo": "data"
                }
            ]
        ).then(
            function () {
                console.log("SETITEM SUCCESSFULL");
            },
            function (reason) {
                console.log("SETITEM ERROR", reason);
            });
    });
} else {
    console.log("INIT", "WAIT 5s", "EXIT");
}

setTimeout(() => {
    process.exit();
}, 5000);