Check if a node.js module is available

Question

I\'m looking for a way to find out if a module is available.

For example, I want to check if the module mongodb is available, programmatically.

Answer 1

ES6 simple solution with 1 line of code :

const path = require('path');
const fs = require('fs');

function hasDependency(dep) {
        return module.paths.some(modulesPath => fs.existsSync(path.join(modulesPath, dep)));
}