cheetah-framework/js/framework/utils/loadScript.js

Cheetah Framework JS used in all our applications

const insertedScripts = {}

export default function (scriptUrl) {
  if (insertedScripts[scriptUrl]) {
    return insertedScripts[scriptUrl]
  }

  insertedScripts[scriptUrl] = new Promise((resolve, reject) => {
    const script = document.createElement('script')
    script.onload = resolve
    script.onerror = reject
    script.src = scriptUrl
    document.body.appendChild(script)
  })

  return insertedScripts[scriptUrl]
}