app/themes/hugo-theme-stack/layouts/partials/article/components/math.html

{{- partial "helper/external" (dict "Context" . "Namespace" "KaTeX") -}}
<script>
    window.addEventListener("DOMContentLoaded", () => {
	const mainArticleElement = document.querySelector(".main-article");
        renderMathInElement(mainArticleElement, {
            delimiters: [
                { left: "$$", right: "$$", display: true },
                { left: "$", right: "$", display: false },
                { left: "\\(", right: "\\)", display: false },
                { left: "\\[", right: "\\]", display: true }
            ],
            ignoredClasses: ["gist"]
        });})
</script>