Export-import Github repo labels

export-github-repo-labels.js

// 1. Go on you labels page:
// eg.: https://github.com/EbookFoundation/free-programming-books/labels
//
// 2. Paste this script in your console / save as browser bookmarklet, and then execute it
// 3. Copy the output / download files and now you can import it using https://github.com/popomore/github-labels !
//
// How to bookmark: https://gist.github.com/caseywatts/c0cec1f89ccdb8b469b1

(function(undefined) {

var reposlug;
try {
  window.location.hostname.indexOf("github.com") != -1 && (reposlug = window.location.pathname.match(/([^\/]+\/[^\/]+)\/labels/i)[1].toLowerCase().replace(/\//ig, "__"));
} catch(e) { }
if (!reposlug) {
   throw "It seems that you are not in a github.com repo labels page: " + window.location;
}

var labels = [].slice.call(document.querySelectorAll(".js-label-link")).map(function(el) {
  var styles = window.getComputedStyle(el);
  return {
    name: el.textContent.trim(), /* required */
    description: el.getAttribute("title") || el.getAttribute("aria-label") || null, /* optional */
    color: rgba2hex(styles.getPropertyValue("background-color")), /* required */
  };
});
var json = JSON.stringify(labels, null, 2), yaml = labels2yml(labels);

var exts = (window.prompt("Choice download formats to save " +labels.length+ " labels.\n\n Options: json,yml,yaml\n\nCancel or leave empty to ignore.", "json,yml")||"").split(/\s*,\s*/);
(exts.includes("json")) && save(reposlug+"__labels.json", "application/json", json);
(exts.includes("yaml") || exts.includes("yml")) && save(reposlug+"__labels.yml", "application/yaml", yaml);

return {
  labels: labels,
  jsonText: json,
  yamlText: yaml,
};


function hex(x) {
  return ("0" + parseInt(x).toString(16)).slice(-2);
}
function rgba2hex(rgba) {
  rgba = rgba.match(/^rgba?\((\d+),\s*(\d+),\s*(\d+)(,\s*\d+\.*\d+)?\)$/);
  return rgba.slice(1,4).reduce(function(s, x){ return s + hex(x); }, "");
}
function save(filename, type, content) {
  const blob = new Blob([content], { type: type });
  const e = document.createEvent("MouseEvents");
  const a = document.createElement("a");
  a.download = filename;
  a.href = window.URL.createObjectURL(blob);
  a.dataset.downloadurl = [type, a.download, a.href].join(":");
  e.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
  a.dispatchEvent(e);
}
function labels2yml(labels) {
  return labels.reduce(function(s, l){
    return s +"  - name: \"" +(l.name)+ "\"\n    description: \"" +(l.description||"")+ "\"\n    color: \"" +(l.color)+ "\"\n";
  }, "labels:\n");
}
}());

@davorpa Well, it's thanks to you for making exporter from js and without installing any software or packages and adding tokens (sharing tokens is always scary) in PC to get them.