Nodejs filesystem

Paths

const path = require('path');

const rcfile = path.resolve('foo.txt')  // relative to abspath
path.dirname(rcfile)                    // '/home/you'
path.basename(rcfile)                   // 'foo.txt'
path.extname(rcfile)                    // '.txt'

// nodejs does not expand ~
// so replace it with the envvar
'~/.zshrc'.replace('~', process.env.HOME)