Import/Export GithHub labels via browser console command

export-github-labels.js

/* Export GitHub labels
 * src: https://gist.github.com/Isaddo/7efebcb673a0957b9c6f07cd14826ea4
 *
 * Go on your labels page (https://github.com/user/repo/labels)
 * Paste this script in your browser javascript console
 * Press Enter!!
 */

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

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));

import-github-labels.js

/* Import GitHub labels
 * src: https://gist.github.com/Isaddo/7efebcb673a0957b9c6f07cd14826ea4
 *
 * Go on your labels page (https://github.com/user/repo/labels)
 * Paste this script in your browser javascript console
 * Press Enter!!
 */

[
  {
    "name": "bug",
    "description": null,
    "color": "d73a4a"
  },
  {
    "name": "conflict",
    "description": null,
    "color": "f4aa64"
  },
  {
    "name": "docs",
    "description": null,
    "color": "1852e2"
  },
  {
    "name": "duplicate",
    "description": null,
    "color": "cfd3d7"
  },
  {
    "name": "enhancement",
    "description": null,
    "color": "6ad2dd"
  },
  {
    "name": "feature",
    "description": null,
    "color": "6ad2dd"
  },
  {
    "name": "help-wanted",
    "description": null,
    "color": "c912bd"
  },
  {
    "name": "in-progress",
    "description": "Work In Progress and should not be merged",
    "color": "e590de"
  },
  {
    "name": "invalid",
    "description": null,
    "color": "f9822c"
  },
  {
    "name": "keep-unlocked",
    "description": null,
    "color": "0e8a16"
  },
  {
    "name": "more-information-needed",
    "description": null,
    "color": "c912bd"
  },
  {
    "name": "offtopic",
    "description": null,
    "color": "1852e2"
  },
  {
    "name": "plugin:beautify",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "plugin:config",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "plugin:dependency",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "plugin:i/o",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "plugin:minify",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "plugin:syntax",
    "description": "3rd party plugin related",
    "color": "006b75"
  },
  {
    "name": "priority:high",
    "description": null,
    "color": "b60205"
  },
  {
    "name": "question",
    "description": null,
    "color": "1852e2"
  },
  {
    "name": "request",
    "description": null,
    "color": "1852e2"
  },
  {
    "name": "scope:api",
    "description": "Application related: API",
    "color": "fbca04"
  },
  {
    "name": "scope:cli",
    "description": "Application related: CLI",
    "color": "fbca04"
  },
  {
    "name": "scope:config",
    "description": "Application related: Configuration",
    "color": "fbca04"
  },
  {
    "name": "scope:dependency",
    "description": "Application related: Dependencies",
    "color": "fbca04"
  },
  {
    "name": "scope:i/o",
    "description": "Application related: Input/Output, Logging",
    "color": "fbca04"
  },
  {
    "name": "scope:performance",
    "description": "Application related: Memory, Performance",
    "color": "fbca04"
  },
  {
    "name": "timeout",
    "description": "Locked due to age",
    "color": "000000"
  },
  {
    "name": "type:external",
    "description": "This is not an issue with Formatter, it’s an issue with external software",
    "color": "eadf04"
  },
  {
    "name": "wontfix",
    "description": "This will not be worked on",
    "color": "000000"
  }
].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);
}