src/common/html.js

// @ts-check

/**
 * Encode string as HTML.
 *
 * @see https://stackoverflow.com/a/48073476/10629172
 *
 * @param {string} str String to encode.
 * @returns {string} Encoded string.
 */
const encodeHTML = (str) => {
  return str
    .replace(/[\u00A0-\u9999<>&](?!#)/gim, (i) => {
      return "&#" + i.charCodeAt(0) + ";";
    })
    .replace(/\u0008/gim, "");
};

export { encodeHTML };