chore: add a formatter

.git-blame-ignore-revs

@@ -0,0 +1,2 @@
+# Bulk reformats. `git config blame.ignoreRevsFile .git-blame-ignore-revs`
+8ddf7b4f70a3118cd60c6677f227fc6876a18f30  # prettier, 10 files

.github/workflows/auto-merge.yml

@@ -18,7 +18,7 @@ name: Auto-merge
 
 on:
   workflow_run:
-    workflows: ['CI']
+    workflows: ["CI"]
     types: [completed]
   # HOURLY, not */10 as in the rest of the fleet — this repo is PRIVATE, so
   # Actions minutes are billed. Every other repo running this sweep is public,
@@ -31,7 +31,7 @@ on:
   # common path is workflow_run above, which fires within seconds of CI going
   # green. Make this repo public and */10 becomes free again.
   schedule:
-    - cron: '0 * * * *'
+    - cron: "0 * * * *"
   workflow_dispatch: {}
 
 permissions:

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
         env:
           POSTGRES_PASSWORD: ci
           POSTGRES_DB: hamstercheek
-        ports: ['5432:5432']
+        ports: ["5432:5432"]
         options: >-
           --health-cmd pg_isready --health-interval 5s
           --health-timeout 5s --health-retries 10

.prettierignore

@@ -0,0 +1,31 @@
+# Build output and vendored trees — formatting these is noise.
+node_modules
+.next
+dist
+build
+out
+coverage
+.turbo
+.vercel
+*.min.js
+*.min.css
+
+# Generated during a build, so it is absent locally and present in CI — which
+# makes a clean local --check no evidence at all. Contentlayer's output also
+# uses import assertions, which prettier's parser rejects outright.
+.contentlayer
+.astro
+.svelte-kit
+storybook-static
+test-results
+playwright-report
+
+# Lockfiles are generated; prettier would rewrite them wholesale.
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
+
+# Markdown is deliberately out of scope for now. Prettier rewraps prose, which
+# is where it is most opinionated and least useful, and it would bury the real
+# diff. Remove this line when you want docs formatted too.
+*.md

.prettierrc

@@ -0,0 +1,9 @@
+{
+  "semi": true,
+  "singleQuote": false,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "trailingComma": "all",
+  "arrowParens": "always",
+  "endOfLine": "lf"
+}

drizzle/meta/0000_snapshot.json

@@ -72,4 +72,4 @@
     "schemas": {},
     "tables": {}
   }
-}
+}

drizzle/meta/_journal.json

@@ -10,4 +10,4 @@
       "breakpoints": true
     }
   ]
-}
+}

package.json

@@ -12,10 +12,12 @@
     "lint": "next lint",
     "typecheck": "tsc --noEmit",
     "test": "vitest run",
-    "verify": "npm run typecheck && npm run lint && npm run test",
+    "verify": "npm run format:check && npm run typecheck && npm run lint && npm run test",
     "db:generate": "drizzle-kit generate",
     "db:migrate": "tsx src/db/migrate.ts",
-    "db:studio": "drizzle-kit studio"
+    "db:studio": "drizzle-kit studio",
+    "format": "prettier --write .",
+    "format:check": "prettier --check ."
   },
   "dependencies": {
     "dotenv": "^17.4.2",
@@ -29,14 +31,15 @@
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3",
+    "@tailwindcss/postcss": "^4.0.0",
     "@types/leaflet": "^1.9.14",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
-    "@tailwindcss/postcss": "^4.0.0",
     "drizzle-kit": "^0.31.10",
     "eslint": "^9",
     "eslint-config-next": "^15.0.0",
+    "prettier": "3.9.6",
     "tailwindcss": "^4.0.0",
     "tsx": "^4.23.12",
     "typescript": "^5",

src/app/actions.ts

@@ -14,7 +14,10 @@ const ALLOWED_PHOTO_TYPES = new Set(["image/jpeg", "image/png", "image/webp"]);
 
 export type CreateStashState = { error?: string };
 
-export async function createStash(_prevState: CreateStashState, formData: FormData): Promise<CreateStashState> {
+export async function createStash(
+  _prevState: CreateStashState,
+  formData: FormData,
+): Promise<CreateStashState> {
   const name = String(formData.get("name") ?? "").trim();
   const description = String(formData.get("description") ?? "").trim();
   const lat = Number(formData.get("lat"));
@@ -34,7 +37,8 @@ export async function createStash(_prevState: CreateStashState, formData: FormDa
     if (!ALLOWED_PHOTO_TYPES.has(photo.type)) {
       return { error: "Photo must be a JPEG, PNG, or WebP image." };
     }
-    const extension = photo.type === "image/png" ? "png" : photo.type === "image/webp" ? "webp" : "jpg";
+    const extension =
+      photo.type === "image/png" ? "png" : photo.type === "image/webp" ? "webp" : "jpg";
     const filename = `${randomUUID()}.${extension}`;
     await mkdir(UPLOADS_DIR, { recursive: true });
     const bytes = Buffer.from(await photo.arrayBuffer());
@@ -51,7 +55,10 @@ export async function createStash(_prevState: CreateStashState, formData: FormDa
 }
 
 export async function deleteStash(id: number): Promise<void> {
-  const [deleted] = await db.delete(stashes).where(eq(stashes.id, id)).returning({ photoUrl: stashes.photoUrl });
+  const [deleted] = await db
+    .delete(stashes)
+    .where(eq(stashes.id, id))
+    .returning({ photoUrl: stashes.photoUrl });
 
   if (deleted?.photoUrl) {
     await unlink(path.join(process.cwd(), "public", deleted.photoUrl)).catch(() => {});

src/app/layout.tsx

@@ -6,11 +6,7 @@ export const metadata: Metadata = {
   description: "Store and find your valuables, off the grid.",
 };
 
-export default function RootLayout({
-  children,
-}: {
-  children: React.ReactNode;
-}) {
+export default function RootLayout({ children }: { children: React.ReactNode }) {
   return (
     <html lang="en">
       <body className="antialiased">{children}</body>

src/app/new/page.tsx

@@ -58,7 +58,9 @@ export default function NewStashPage() {
 
         <div className="flex flex-col gap-2">
           <span className="text-sm font-medium">Location</span>
-          <p className="text-xs text-muted-foreground">Click the map to drop a pin where the box is buried or hidden.</p>
+          <p className="text-xs text-muted-foreground">
+            Click the map to drop a pin where the box is buried or hidden.
+          </p>
           <MapPicker value={coords} onChange={setCoords} />
           <p className="text-xs text-muted-foreground">
             {coords ? formatCoordinates(coords) : "No location selected yet"}

src/app/page.tsx

@@ -38,7 +38,9 @@ export default async function Home() {
               >
                 <div>
                   <p className="font-medium">{item.name}</p>
-                  <p className="text-xs text-muted-foreground">{formatCoordinates({ lat: item.lat, lng: item.lng })}</p>
+                  <p className="text-xs text-muted-foreground">
+                    {formatCoordinates({ lat: item.lat, lng: item.lng })}
+                  </p>
                 </div>
                 {item.photoUrl && (
                   <span className="h-12 w-12 shrink-0 overflow-hidden rounded-[var(--radius-token)] border border-border">

src/app/stashes/[id]/page.tsx

@@ -30,7 +30,9 @@ export default async function StashDetailPage({ params }: { params: Promise<{ id
       <div className="flex items-start justify-between gap-4">
         <div>
           <h1 className="text-2xl font-bold tracking-tight">{stash.name}</h1>
-          <p className="text-sm text-muted-foreground">{formatCoordinates({ lat: stash.lat, lng: stash.lng })}</p>
+          <p className="text-sm text-muted-foreground">
+            {formatCoordinates({ lat: stash.lat, lng: stash.lng })}
+          </p>
         </div>
         <DeleteStashButton id={stash.id} name={stash.name} />
       </div>

src/lib/coordinates.test.ts

@@ -1,5 +1,10 @@
 import { describe, expect, it } from "vitest";
-import { formatCoordinates, isValidCoordinates, isValidLatitude, isValidLongitude } from "./coordinates";
+import {
+  formatCoordinates,
+  isValidCoordinates,
+  isValidLatitude,
+  isValidLongitude,
+} from "./coordinates";
 
 describe("isValidLatitude", () => {
   it("accepts values within -90..90", () => {