Switch to ts and ESM configs

tailwind.config.ts

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+import type { Config } from "tailwindcss";
+import defaultTheme from "tailwindcss/defaultTheme";
+
+export default {
+	corePlugins: {
+		preflight: false,
+		container: false,
+	},
+	darkMode: ["class", '[data-theme="dark"]'],
+	content: ["./src/**/*.{js,jsx,tsx,html}", "./docs/**/*.{md,mdx}"],
+	theme: {
+		extend: {
+			fontFamily: {
+				sans: ["Inter", ...defaultTheme.fontFamily.sans],
+				jakarta: ["Plus Jakarta Sans", ...defaultTheme.fontFamily.sans],
+				mono: ["Fira Code", ...defaultTheme.fontFamily.mono],
+			},
+			colors: {},
+		},
+	},
+	plugins: [],
+} satisfies Config;