window.addEventListener("load", () => {
  const macros = {};
  for (const item of new Map(
    Object.entries({
      N: "mathbb{N}",
      R: "mathbb{R}",
      Z: "mathbb{Z}",
      O: "Theta",
      ra: "rightarrow",
      la: "leftarrow",
      RA: "Rightarrow",
      LA: "Leftarrow",
      u: "mu",
    })
  )[Symbol.iterator]()) {
    macros[`\\${item[0]}`] = `\\${item[1]}`;
  }

  renderMathInElement(document.body, {
    delimiters: [
      { left: "$$", right: "$$", display: true },
      { left: "$", right: "$", display: false },
    ],
    throwOnError: false,
    macros,
  });
});