chore: constants file, styling, and seek component

src/utils/date.js

@@ -0,0 +1,14 @@
+import format from "date-fns/format";
+
+export const pad = n => (n < 10 ? "0" : "") + n;
+
+export const todayUrl = (date = new Date()) =>
+  `/${date.getFullYear()}/${pad(date.getMonth() + 1)}/${pad(date.getDate())}/`;
+
+export const yearUrl = (date = new Date()) => `/${date.getFullYear()}/`;
+
+export const months = {
+  short: Array.from({ length: 12 }, (x, index) =>
+    new Date(0, index).toLocaleDateString("en-US", { month: "short" })
+  )
+};