Inject an unique CSS string via a
<style>tag into the<head>.
const injectCssString = require('inject-css-string');
const createCssRule = require('convert-to-css').createCssRule; // npm i -S 'convert-to-css'
const css = createCssRule({
'.foo': {
padding: 10,
},
}); // results in: '.foo{padding:10px}'
injectCssString(css);
injectCssString(css);
console.log(document.head.innerHTML); // logs: '<style>.foo{padding:10px}</style>'
document.head.innerHTML = ''; // empty head, removes previously added style tags
injectCssString(css, 'bar');
injectCssString(css, 'bar');
console.log(document.head.innerHTML); // logs: '<style id="ics-bar">.foo{padding:10px}</style>'MIT © LSVH