try_glob.js

var glob = require('glob')

function find(pattern) {
  glob(pattern, function(err, files) {
    if(err) {
      console.log(err)
    }
    console.log(pattern)
    console.log(files)
  })
}

var pattern = "./src/**/*.js"
find(pattern)

pattern = "**/*.css"
find(pattern)

pattern = "**/*.html"
find(pattern)