I18n Key missing Finder

i18n.js

function setValue(object, path, value) {
  const keys = path.split('.')
  const last = keys.pop()

  keys.reduce((o, k) => {
    return (o[k] = o[k] || {})
  }, object)[last] = value
}

function writeNewTransKey(key) {
  const file = localStorage.getItem('trad')
  if (!file) {
    localStorage.setItem('trad', JSON.stringify({}))
  }
  const data = JSON.parse(file)
  setValue(data, key, '##MISSING')
  localStorage.setItem('trad', JSON.stringify(data))
}

GlobalI18n.missingTranslation = key => writeNewTransKey(key)