How to check in node if module exists and if exists to load?

Question

I need to check if file/(custom)module js exists under some path. I tried like

var m = require(\'/home/test_node_project/per\');
but it throws error

Answer 1

You can just check is a folder exists by using methods:

var fs = require('fs');

if (fs.existsSync(path)) {
    // Do something
}

// Or

fs.exists(path, function(exists) {
    if (exists) {
        // Do something
    }
});