try memoizing front matter parsing

.gitignore

@@ -8,6 +8,9 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 
+# typescript
+*.tsbuildinfo
+
 # here be secrets
 *.env*
 !.env.example

lib/helpers/parse-notes.ts

@@ -5,6 +5,7 @@ import matter from "gray-matter";
 import { marked } from "marked";
 import removeMarkdown from "remove-markdown";
 import pMap from "p-map";
+import pMemoize from "p-memoize";
 import { formatDate } from "./format-date";
 import { baseUrl } from "../config";
 import { NOTES_DIR } from "../config/constants";
@@ -55,7 +56,7 @@ export const getNoteData = async (
 };
 
 // returns the parsed front matter of ALL notes, sorted reverse chronologically
-export const getAllNotes = async (): Promise<NoteFrontMatter[]> => {
+export const getAllNotes = pMemoize(async (): Promise<NoteFrontMatter[]> => {
   const slugs = await getNoteSlugs();
 
   // for each slug, query its front matter
@@ -65,4 +66,4 @@ export const getAllNotes = async (): Promise<NoteFrontMatter[]> => {
   data.sort((note1, note2) => (note1.date > note2.date ? -1 : 1));
 
   return data;
-};
+});

package.json

@@ -14,7 +14,7 @@
     "dev": "cross-env NODE_OPTIONS='--inspect' next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "eslint . --ext js,jsx,ts,tsx"
   },
   "dependencies": {
     "@fontsource/comic-neue": "4.5.8",
@@ -42,10 +42,11 @@
     "gray-matter": "^4.0.3",
     "hex-to-rgba": "^2.0.1",
     "marked": "^4.0.18",
-    "next": "12.2.3-canary.10",
+    "next": "12.2.3-canary.13",
     "next-mdx-remote": "^4.0.3",
     "next-seo": "^5.4.0",
     "p-map": "^5.5.0",
+    "p-memoize": "^7.1.0",
     "prop-types": "^15.8.1",
     "query-string": "^7.1.1",
     "react": "18.2.0",
@@ -83,11 +84,11 @@
     "@types/react-is": "^17.0.3",
     "@types/remove-markdown": "^0.3.1",
     "@types/uglify-js": "^3.16.0",
-    "@typescript-eslint/eslint-plugin": "^5.30.6",
-    "@typescript-eslint/parser": "^5.30.6",
+    "@typescript-eslint/eslint-plugin": "^5.30.7",
+    "@typescript-eslint/parser": "^5.30.7",
     "cross-env": "^7.0.3",
-    "eslint": "~8.19.0",
-    "eslint-config-next": "12.2.3-canary.10",
+    "eslint": "~8.20.0",
+    "eslint-config-next": "12.2.3-canary.13",
     "eslint-config-prettier": "~8.5.0",
     "eslint-plugin-prettier": "~4.2.1",
     "lint-staged": "^13.0.3",