add a *very* basic minifier to remove the insane amount of whitespace from compiled MDX

lib/helpers/minifier.ts

@@ -0,0 +1,25 @@
+import { trimLines } from "trim-lines";
+import stripComments from "strip-comments";
+
+// do some _very_ rudimentary JS minifying.
+export const minifier = (source: string): string => {
+  // save the first line for later, it might be important?
+  const firstLine = source.split("\n")[0];
+
+  // remove JS comments
+  source = stripComments(source, {
+    block: false,
+    keepProtected: true,
+  });
+  // remove indentation
+  source = trimLines(source);
+  // remove newlines
+  source = source.replace(/\n/g, "");
+
+  // restore JSX flags if they were there at the beginning
+  if (firstLine.startsWith("/*@jsx")) {
+    source = `${firstLine}${source}`;
+  }
+
+  return source;
+};