sullivan/src/utils/inject-typekit.js

Tools to quickly build interfaces in JS

/**
 * Inject the async typekit embed code with the passed in typekit id
 * embed code from https://blog.5apps.com/2014/02/21/using-typekit-the-right-way-with-an-improved-loading-script.html
 *
 * @param {String} typekitId
 */
export default function injectTypekit(typekitId) {
  (function(d) {
  var tkTimeout=3000;
  if(window.sessionStorage){if(sessionStorage.getItem('useTypekit')==='false'){tkTimeout=0;}}
  var config = {
    kitId: typekitId,
    scriptTimeout: tkTimeout
  },
  h=d.documentElement,t=setTimeout(function(){h.className=h.className.replace(/\bwf-loading\b/g,"")+"wf-inactive";if(window.sessionStorage){sessionStorage.setItem("useTypekit","false")}},config.scriptTimeout),tk=d.createElement("script"),f=false,s=d.getElementsByTagName("script")[0],a;h.className+="wf-loading";tk.src='//use.typekit.net/'+config.kitId+'.js';tk.async=true;tk.onload=tk.onreadystatechange=function(){a=this.readyState;if(f||a&&a!="complete"&&a!="loaded")return;f=true;clearTimeout(t);try{Typekit.load(config)}catch(e){}};s.parentNode.insertBefore(tk,s)
})(document);
}