docs on making plugins

quartz/plugins/transformers/latex.ts

@@ -15,25 +15,31 @@ export const Latex: QuartzTransformerPlugin<Options> = (opts?: Options) => {
       return [remarkMath]
     },
     htmlPlugins() {
-      return [engine === "katex" ? [rehypeKatex, { output: "html" }] : [rehypeMathjax]]
+      if (engine === "katex") {
+        return [[rehypeKatex, { output: "html" }]]
+      } else {
+        return [rehypeMathjax]
+      }
     },
     externalResources() {
-      return engine === "katex"
-        ? {
-            css: [
-              // base css
-              "https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css",
-            ],
-            js: [
-              {
-                // fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
-                src: "https://cdn.jsdelivr.net/npm/katex@0.16.7/dist/contrib/copy-tex.min.js",
-                loadTime: "afterDOMReady",
-                contentType: "external",
-              },
-            ],
-          }
-        : {}
+      if (engine === "katex") {
+        return {
+          css: [
+            // base css
+            "https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css",
+          ],
+          js: [
+            {
+              // fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
+              src: "https://cdn.jsdelivr.net/npm/katex@0.16.7/dist/contrib/copy-tex.min.js",
+              loadTime: "afterDOMReady",
+              contentType: "external",
+            },
+          ],
+        }
+      } else {
+        return {}
+      }
     },
   }
 }