Migrate gitlab variables

migrate.js

// read value
JSON.stringify(
  [...document.getElementsByClassName('js-row')].map(el => {
    const key = el.querySelector('.js-ci-variable-input-key').value
    const { value } = el.querySelector('textarea.js-ci-variable-input-value')
    return [key, value]
  })
)

const result=[[]] //whatever from last step
// write value from last step (you need to create rows fist)
result.forEach((setting, index) => {
  document.querySelectorAll('.js-row .js-ci-variable-input-key')[index].value =
    setting[0]
  document.querySelectorAll('.js-row textarea.js-ci-variable-input-value')[
    index
  ].value = setting[1]
})