consolidate mdx file parsing

lib/parse-notes.ts

@@ -1,30 +1,33 @@
 import fs from "fs";
 import path from "path";
 import matter from "gray-matter";
-import { format, parseISO } from "date-fns";
-import * as config from "./config";
+import { NOTES_DIR, baseUrl } from "./config";
 
-export const getNoteData = (file: string) => {
-  const slug = file.replace(/\.mdx$/, "");
-  const fullPath = path.join(process.cwd(), config.NOTES_DIR, `${slug}.mdx`);
-  const contents = fs.readFileSync(fullPath, "utf8");
-  const { data } = matter(contents);
+export const getNoteData = (slug: string) => {
+  const fullPath = path.join(process.cwd(), NOTES_DIR, `${slug}.mdx`);
+  const rawContent = fs.readFileSync(fullPath, "utf8");
+  const { data, content } = matter(rawContent);
 
   return {
-    ...data,
-    slug,
-    permalink: `${config.baseUrl}/notes/${slug}/`,
-    date: parseISO(data.date).toISOString(), // validate/normalize the date string provided from front matter
-    year: parseInt(format(parseISO(data.date), "yyyy")), // parse years here so it's easier to group them on list page
+    frontMatter: {
+      ...data,
+      slug,
+      permalink: `${baseUrl}/notes/${slug}/`,
+      date: new Date(data.date).toISOString(), // validate/normalize the date string provided from front matter
+    },
+    content,
   };
 };
 
 // all .mdx files in NOTES_DIR
-export const getNoteFiles = () =>
-  fs.readdirSync(path.join(process.cwd(), config.NOTES_DIR)).filter((notePath) => /\.mdx$/.test(notePath));
+export const getNoteSlugs = () =>
+  fs
+    .readdirSync(path.join(process.cwd(), NOTES_DIR))
+    .filter((file) => /\.mdx$/.test(file))
+    .map((noteFile) => noteFile.replace(/\.mdx$/, ""));
 
 export const getAllNotes = () =>
-  getNoteFiles()
-    .map((file) => getNoteData(file))
+  getNoteSlugs()
+    .map((slug) => getNoteData(slug).frontMatter)
     // sort notes by date in descending order
     .sort((note1: any, note2: any) => (note1.date > note2.date ? -1 : 1));