JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" id="btn" value="GERAR" />
<br>
<br>
<div id="my-node">
  <textarea>Conteudo a ser transformado em imagem</textarea>
</div>
<div id="here-appear-theimages">
<p>
aqui o resultado:
</p>
</div>

JavaScript

/*! dom-to-image 03-02-2016 */
!function(a){"use strict";function b(a,b){return b=b||{},Promise.resolve(a).then(function(a){return e(a,b.filter)}).then(f).then(g).then(function(a){return b.bgcolor&&(a.style.backgroundColor=b.bgcolor),a}).then(function(b){return h(b,a.scrollWidth,a.scrollHeight)})}function c(a,b){return i(a,b||{}).then(function(a){return a.toDataURL()})}function d(a,b){return i(a,b||{}).then(n.canvasToBlob)}function e(b,c){function d(a){return a instanceof HTMLCanvasElement?n.makeImage(a.toDataURL()):a.cloneNode(!1)}function f(a,b,c){function d(a,b,c){var d=Promise.resolve();return b.forEach(function(b){d=d.then(function(){return e(b,c)}).then(function(b){b&&a.appendChild(b)})}),d}var f=a.childNodes;return 0===f.length?Promise.resolve(b):d(b,n.asArray(f),c).then(function(){return b})}function g(b,c){function d(){function d(a,b){function c(a,b){n.asArray(a).forEach(function(c){b.setProperty(c,a.getPropertyValue(c),a.getPropertyPriority(c))})}a.cssText?b.cssText=a.cssText:c(a,b)}d(a.window.getComputedStyle(b),c.style)}function e(){function d(d){function e(b,c,d){function e(a){var b=a.getPropertyValue("content");return a.cssText+" content: "+b+";"}function f(a){function b(b){return b+": "+a.getPropertyValue(b)+(a.getPropertyPriority(b)?" !important":"")}return n.asArray(a).map(b).join("; ")+";"}var g="."+b+":"+c,h=d.cssText?e(d):f(d);return a.document.createTextNode(g+"{"+h+"}")}var f=a.window.getComputedStyle(b,d),g=f.getPropertyValue("content");if(""!==g&&"none"!==g){var h=n.uid();c.className=c.className+" "+h;var i=a.document.createElement("style");i.appendChild(e(h,d,f)),c.appendChild(i)}}[":before",":after"].forEach(function(a){d(a)})}function f(){b instanceof HTMLTextAreaElement&&(c.innerHTML=b.value)}function g(){c instanceof SVGElement&&c.setAttribute("xmlns","http://www.w3.org/2000/svg")}return c instanceof Element?Promise.resolve().then(d).then(e).then(f).then(g).then(function(){return c}):c}return...