Detects support for emoji character sets.

detect-emoji-support.js

// https://stackoverflow.com/questions/45576748/how-can-i-detect-rendering-support-for-emoji-in-javascript
// https://raw.githubusercontent.com/Modernizr/Modernizr/master/feature-detects/emoji.js


// function check (emoji) {
//     var pixelRatio = window.devicePixelRatio || 1;
//     var offset = 12 * pixelRatio;
//     var node = document.createElement('canvas');
//     var ctx = node.getContext('2d');
//     ctx.fillStyle = '#f00';
//     ctx.textBaseline = 'top';
//     ctx.font = '32px Arial';
//     ctx.fillText(emoji, 0, 0); // U+1F428 KOALA
//     console.log(ctx.getImageData(offset, offset, 1, 1).data[0] !== 0)
//     return ctx.getImageData(offset, offset, 1, 1).data[0] !== 0
// }

check('😁')