Nodejs get directory of `required` module

Question

Is it possible to determine the directory where required scripts come from?

My ultimate goal is to...

// return the directory where `mysql` module is found
var mysqldir = requiredir('mysql')
if(fs.existsSync(mysqldir+"/README.md")){
  console.log(fs.readFileSync(mysqldir+"/README.md").toString())
}

So I can have a handy reference for all these modules, and hopefully people in the enlightened future, will include module docs/cheatsheets intended to be accessed in this manner

Answer 1

required.resolve(...) may be what you're looking for:

function requiredir(id) {
    return path.dirname(require.resolve(id));
}

Though, this will follow the main setting:

> requiredir('grunt')
.../node_modules/grunt/lib/

(Update: Documentation for the API isn't available anymore, so its use likely isn't supported.) Another option may be to use npm's view, though this is limited to registered packages:

npm.load({}, function (err) {
    npm.commands.view(['mysql', 'readme'], true, function (err, readme) {
        console.log(readme);
    });
});