browser-media-mime-type/index.js

mime type lookup for browser video and audio

// sourced from:
// http://www.leanbackplayer.com/test/h5mt.html
// https://github.com/broofa/node-mime/blob/master/types.json
var mimeTypes = require('./mime-types.json')

var mimeLookup = {}
Object.keys(mimeTypes).forEach(function (key) {
  var extensions = mimeTypes[key]
  extensions.forEach(function (ext) {
    mimeLookup[ext] = key
  })
})

module.exports = function lookup (ext) {
  if (!ext) throw new TypeError('must specify extension string')
  if (ext.indexOf('.') === 0) {
    ext = ext.substring(1)
  }
  return mimeLookup[ext.toLowerCase()]
}