aegir/src/fixtures.browser.js

/* global self */
'use strict'

const { Buffer } = require('buffer')
// note: filePath needs to be relative to the module root
module.exports = function loadFixtures (filePath, module) {
  if (module) {
    filePath = 'node_modules/' + module + '/' + filePath
  }
  return syncXhr(filePath)
}

// @dignifiedquire: I know this is considered bad practice (syncXhr), but it
// makes testing life so much nicer!
function syncXhr (filePath) {
  const target = '/base/' + filePath

  const request = new self.XMLHttpRequest()
  request.open('GET', target, false)
  request.overrideMimeType('text/plain; charset=x-user-defined')
  request.send(null)

  if (request.status === 200) {
    const filestream = request.responseText
    const res = new Uint8Array(filestream.length)

    for (let i = 0; i < filestream.length; i++) {
      res[i] = filestream.charCodeAt(i) & 0xff
    }

    return Buffer.from(res)
  } else {
    throw new Error(`Could not get the Fixture: ${filePath}`)
  }
}