import github labels via console command

import-github-labels.js

/*
  Go on your labels page (https://github.com/user/repo/labels)

  Edit the following label array
  or
  Use this snippet to export github labels (https://gist.github.com/MoOx/93c2853fee760f42d97f)
  and replace it

  Paste this script in your console
  Press Enter!!
*/

[
  {
    "name": "bugfix",
    "color": "eb6420"
  },
  {
    "name": "feature",
    "color": "0e8a16"
  },
  {
    "name": "hotfix",
    "color": "e11d21"
  }
].forEach(function(label) {
  addLabel(label)
})

function updateLabel (label) {
  var flag = false;
  [].slice.call(document.querySelectorAll(".labels-list-item"))
  .forEach(function(element) {
    if (element.querySelector('.label-link').textContent.trim() === label.name) {
      flag = true
      element.querySelector('.js-edit-label').click()
      element.querySelector('.label-edit-name').value = label.name
      element.querySelector('.color-editor-input').value = '#' + label.color
      element.querySelector('.new-label-actions .btn-primary').click()
    }
  })
  return flag
}

function addNewLabel (label) {
  document.querySelector('.new-label input#label-').value = label.name
  document.querySelector('.new-label input#edit-label-color-new').value = '#' + label.color
  document.querySelector('.new-label-actions .btn-primary').click()
}

function addLabel (label) {
  if (!updateLabel(label)) addNewLabel(label)
}

Nice, works well. It is possible to add a flag to clear all existing flags before importing new ones

With some changes in github classnames:

[
  {
    "name": "bugfix",
    "color": "eb6420"
  },
  {
    "name": "feature",
    "color": "0e8a16"
  },
  {
    "name": "hotfix",
    "color": "e11d21"
  }
].forEach(function(label) {
  addLabel(label)
})

function updateLabel (label) {
  var flag = false;
  [].slice.call(document.querySelectorAll(".labels-list-item"))
  .forEach(function(element) {
    if (element.querySelector('.label-link').textContent.trim() === label.name) {
      flag = true
      element.querySelector('.js-edit-label').click()
      element.querySelector('.js-new-label-name-input').value = label.name
      element.querySelector('.js-new-label-color-input').value = '#' + label.color
      element.querySelector('.js-edit-label-cancel ~ .btn-primary').click()
    }
  })
  return flag
}

function addNewLabel (label) {
  document.querySelector('.js-new-label-name-input').value = label.name
  document.querySelector('.js-new-label-color-input').value = '#' + label.color
  document.querySelector('.js-details-target ~ .btn-primary').click()
}

function addLabel (label) {
  if (!updateLabel(label)) addNewLabel(label)
}

Very nice. Thanks!

Trying it again recently, I needed to add document.querySelector('.js-details-target ~ .btn-primary').disabled = false before the click() to get it to work (using @mqklin updated code).

I added two lines so the script now also works with descriptions. This includes Igelfan's fix.

// append this to the array returned from the label getter at the bottom
.forEach(function(label) {
addLabel(label)
})

function updateLabel (label) {
  var flag = false;
  [].slice.call(document.querySelectorAll(".labels-list-item"))
  .forEach(function(element) {
    if (element.querySelector('.label-link').textContent.trim() === label.name) {
      flag = true
      element.querySelector('.js-edit-label').click()
      element.querySelector('.js-new-label-name-input').value = label.name
      element.querySelector('.js-new-label-description-input').value = label.description
      element.querySelector('.js-new-label-color-input').value = '#' + label.color
      element.querySelector('.js-edit-label-cancel ~ .btn-primary').click()
    }
  })
  return flag
}

function addNewLabel (label) {
  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
  document.querySelector('.js-details-target ~ .btn-primary').click()
}

function addLabel (label) {
  if (!updateLabel(label)) addNewLabel(label)
}

Getting the labels from source repo, with descriptions:

var labels = [];
[].slice.call(document.querySelectorAll(".label-link"))
.forEach(function(element) {
  labels.push({
    name: element.textContent.trim(),
    description: element.getAttribute("aria-label"),
    // using style.backgroundColor might returns "rgb(...)"
    color: element.getAttribute("style")
      .replace("background-color:", "")
      .replace(/color:.*/,"")
      .trim()
      // github wants hex code only without # or ;
      .replace(/^#/, "")
      .replace(/;$/, "")
      .trim(),
  })
})
console.log(JSON.stringify(labels, null, 2))

Thanks for this! Very helpful

Amazing! Thank you!

Thanks a lot. I have added my own labels to add priority labels and change some default GitHub label color:
https://gist.github.com/cdlhub/02f59220d842b5a32d282f58bd502c11