showdown-mathjax/dist/index.js

Showdown Extensions for mathjax

import Showdown from 'showdown';

// src/index.ts
function showdownMathjax() {
  const ext = [
    {
      type: "lang",
      filter: (text) => {
        return text.replace(/\\\((.*?)\\\)/g, (match, p1) => {
          return "<mathxxxjax>" + encode("\\(" + escapehtml(p1) + "\\)") + "</mathxxxjax>";
        });
      }
    },
    {
      type: "lang",
      filter: (text) => {
        return text.replace(/\\\[([\s\S]*?)\\\]/g, (match, p1) => {
          return "<mathxxxjax>" + encode("\\[" + escapehtml(p1) + "\\]") + "</mathxxxjax>";
        });
      }
    },
    {
      type: "output",
      filter: (text) => {
        return text.replace(/<mathxxxjax>(.*?)<\/mathxxxjax>/g, (match, p1) => {
          return decode(p1);
        });
      }
    },
    {
      type: "output",
      filter: (text) => {
        const scriptTag = `
        <script>
          var script = document.createElement("script");
          script.id = "MathJax-script";
          script.async = true;
          script.src =
            "https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js";
          document.head.appendChild(script);
        </script>
        `;
        return scriptTag + text;
      }
    }
  ];
  return ext;
}
function escapehtml(str) {
  return str.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
}
function encode(text) {
  if (typeof Buffer === "function") {
    return Buffer.from(text).toString("base64");
  } else {
    return btoa(text);
  }
}
function decode(text) {
  if (typeof Buffer === "function") {
    return Buffer.from(text, "base64").toString();
  } else {
    return atob(text);
  }
}
Showdown.extension("showdownMathjax", showdownMathjax());
var src_default = showdownMathjax;

export { src_default as default };
//# sourceMappingURL=out.js.map
//# sourceMappingURL=index.js.map