Export Github Labels via console commands

export_label.js

/*
  Copy this script into console and run.
*/
{
  /**
   * Convert HSL colors to HEX
   * @param {number} h Hue
   * @param {number} s Saturation
   * @param {number} l Lightness
   * @returns {string} HEX color
   */
  const hslToHex = (h, s, l) => {
    l /= 100
    const a = (s * Math.min(l, 1 - l)) / 100

    /** @param {number} n */
    const f = n => {
      const k = (n + h / 30) % 12
      const color = l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1)
      return Math.round(255 * color)
        .toString(16)
        .padStart(2, '0') // convert to Hex and prefix "0" if needed
    }
    return `${f(0)}${f(8)}${f(4)}`.trim()
  }
  const labels = Array.from(document.querySelectorAll('.js-label-link')).map(
    e => {
      const style = getComputedStyle(e)
      const hsl = ['h', 's', 'l'].map(
        c => +style.getPropertyValue(`--label-${c}`)
      )
      return {
        name: e.textContent?.trim(),
        description: e.getAttribute('title'),
        color: hslToHex(...hsl),
      }
    }
  )

  const text = JSON.stringify(labels, null, 2)
  copy(text)
  console.log(text)
}

import_label.js

/*
  Copy this script into console and run. Paste previous result from import_label.js.
*/
{
  /**
   * @typedef {Object} Label
   * @property {string} name
   * @property {string | null} description
   * @property {string} color
   */

  /** @param {Label} label */
  const getPreviousLabel = label =>
    previousLabels.find(
      e => e.querySelector('.js-label-link')?.textContent?.trim() === label.name
    )

  /**
   * @param {Label} prev
   * @param {Label} label
   */
  const updateLabel = (prev, label) => {
    prev.querySelector('.js-edit-label').click()
    prev.querySelector('.js-new-label-name-input').value = label.name
    prev.querySelector('.js-new-label-description-input').value =
      label.description
    prev.querySelector('.js-new-label-color-input').value = `#${label.color}`
    prev.querySelector('.js-edit-label-cancel ~ .btn-primary')?.click()
  }

  /** @param {Label} label */
  const addNewLabel = label => {
    document.querySelector('.js-details-target ~ .btn-primary').click()
    document.querySelector('.js-new-label-name-input').value = label.name
    document.querySelector('.js-new-label-description-input').value =
      label.description
    document.querySelector(
      '.js-new-label-color-input'
    ).value = `#${label.color}`
    document.querySelector('.js-details-target ~ .btn-primary').disabled = false
  }

  const previousLabels = Array.from(
    document.querySelectorAll('.js-labels-list-item')
  )

  /** @type {Label[]} */
  const labels = JSON.parse(prompt('Paste your labels here'))
  labels.forEach(label => {
    const prev = getPreviousLabel(label)
    if (prev) {
      updateLabel(prev, label)
    } else {
      addNewLabel(label)
    }
  })
}

remove_label.js

Array.from(document.querySelectorAll('.js-delete-label'))
  .map(e => e.querySelector('.btn-link'))
  .forEach(button => {
    button.removeAttribute('data-confirm')
    button.click()
  })