prismjs/plugins/line-numbers/prism-line-numbers.min.js

Lightweight, robust, elegant syntax highlighting. A spin-off project from Dabblet.

!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var e="line-numbers",t=function(e){var t=n(e),r=t["white-space"];if("pre-wrap"===r||"pre-line"===r){var s=e.querySelector("code"),l=e.querySelector(".line-numbers-rows"),a=e.querySelector(".line-numbers-sizer"),i=e.textContent.split("\n");a||(a=document.createElement("span"),a.className="line-numbers-sizer",s.appendChild(a)),a.style.display="block",i.forEach(function(e,t){a.textContent=e||"\n";var n=a.getBoundingClientRect().height;l.children[t].style.height=n+"px"}),a.textContent="",a.style.display="none"}},n=function(e){return e?window.getComputedStyle?getComputedStyle(e):e.currentStyle||null:null};window.addEventListener("resize",function(){Array.prototype.forEach.call(document.querySelectorAll("pre."+e),t)}),Prism.hooks.add("complete",function(e){if(e.code){var n=e.element.parentNode,r=/\s*\bline-numbers\b\s*/;if(n&&/pre/i.test(n.nodeName)&&(r.test(n.className)||r.test(e.element.className))&&!e.element.querySelector(".line-numbers-rows")){r.test(e.element.className)&&(e.element.className=e.element.className.replace(r," ")),r.test(n.className)||(n.className+=" line-numbers");var s,l=e.code.match(/\n(?!$)/g),a=l?l.length+1:1,i=new Array(a+1);i=i.join("<span></span>"),s=document.createElement("span"),s.setAttribute("aria-hidden","true"),s.className="line-numbers-rows",s.innerHTML=i,n.hasAttribute("data-start")&&(n.style.counterReset="linenumber "+(parseInt(n.getAttribute("data-start"),10)-1)),e.element.appendChild(s),t(n)}}})}}();