Elm detector (bookmarklet)

elm-detector-bookmarklet.js

javascript:(async function(){let elmDetected;if(typeof window.Elm==="object"){elmDetected=true}else{let scriptTags=document.scripts;let scriptIsElm=script=>script.match(/throw (new )?Error\([\'\"]https:\/\/github\.com\/elm\/core\/blob\/1\.0\.0\/hints\//);for(scriptTag of scriptTags){let scriptContents;if(!scriptTag.src){scriptContents=scriptTag.textContent}else{await fetch(scriptTag.src).then(response=>response.text()).then(text=>scriptContents=text).catch(err=>{console.error(err); scriptContents=null;})}if(scriptContents===null){continue;}if(scriptIsElm(scriptContents)){elmDetected=true;break}}}if(elmDetected){alert("%F0%9F%8C%B3 Yep, seems to be an Elm app! \\o/ %F0%9F%8C%B3")}else{alert("Nope, doesn%E2%80%99t seem to be Elm (but I might be wrong).")}})();