I got it working!!!

Thanks to sveltejs/kit#2966 (comment)

.gitignore

@@ -8,3 +8,4 @@ node_modules
 !.env.example
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+kv-data/

.prettierrc

@@ -1,6 +1,7 @@
 {
   "singleQuote": true,
   "printWidth": 100,
+  "proseWrap": "always",
   "plugins": ["prettier-plugin-svelte"],
   "pluginSearchDirs": ["."],
   "overrides": [{ "files": "*.svelte", "options": { "parser": "svelte" } }]

README.md

@@ -1,38 +1,6 @@
-# create-svelte
+# svelte-local-cloudflare-dev-working
 
-Everything you need to build a Svelte project, powered by [`create-svelte`](https://github.com/sveltejs/kit/tree/master/packages/create-svelte).
+This ended up just being a playground for me to figure out how to run a Sveltekit app on Cloudflare
+and attach to KVs, DOs, etc.
 
-## Creating a project
-
-If you're seeing this, you've probably already done this step. Congrats!
-
-```bash
-# create a new project in the current directory
-npm create svelte@latest
-
-# create a new project in my-app
-npm create svelte@latest my-app
-```
-
-## Developing
-
-Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
-
-```bash
-npm run dev
-
-# or start the server and open the app in a new browser tab
-npm run dev -- --open
-```
-
-## Building
-
-To create a production version of your app:
-
-```bash
-npm run build
-```
-
-You can preview the production build with `npm run preview`.
-
-> To deploy your app, you may need to install an [adapter](https://kit.svelte.dev/docs/adapters) for your target environment.
+See my SvelteKit Tips & Tricks doc, "Local development with Cloudflare."

package.json

@@ -1,11 +1,9 @@
 {
-  "name": "giftideas",
+  "name": "svelte-local-cloudflare-dev-working",
   "version": "0.0.1",
   "private": true,
   "scripts": {
-    "--": "should I use --ext js,ts,svelte,html,png,gif,jpg,jpeg ?",
-    "watch": "nodemon --ext '*' --watch src --exec \"vite build --minify false --sourcemap true\"",
-    "dev": "wrangler pages dev .svelte-kit/cloudflare --kv GIFTS --live-reload",
+    "dev": "vite dev",
     "build": "vite build",
     "preview": "vite preview",
     "test": "playwright test",
@@ -25,6 +23,7 @@
     "eslint": "^8.32.0",
     "eslint-config-prettier": "^8.6.0",
     "eslint-plugin-svelte3": "^4.0.0",
+    "miniflare": "^2.11.0",
     "nodemon": "^2.0.20",
     "prettier": "^2.8.3",
     "prettier-plugin-svelte": "^2.9.0",

src/hooks.server.ts

@@ -0,0 +1,11 @@
+import { dev } from '$app/environment';
+import type { Handle } from '@sveltejs/kit';
+
+export const handle: Handle = async ({ event, resolve }) => {
+  if (dev) {
+    const { fallBackPlatformToMiniFlareInDev } = await import('$lib/clients/miniflare');
+    // @ts-expect-error I don't know why
+    event.platform = await fallBackPlatformToMiniFlareInDev(event.platform);
+  }
+  return resolve(event);
+};

src/lib/clients/miniflare.ts

@@ -0,0 +1,31 @@
+import { Miniflare, Log, LogLevel } from 'miniflare';
+import { dev } from '$app/environment';
+
+export const fallBackPlatformToMiniFlareInDev = async (_platform: App.Platform) => {
+  if (!dev) return _platform;
+
+  if (_platform) return _platform;
+  const mf = new Miniflare({
+    log: new Log(LogLevel.INFO),
+    kvPersist: './kv-data', // Use filebase or in memory store
+    kvNamespaces: ['GIFTS'], //Declare array with NameSpaces
+    globalAsyncIO: true,
+    globalTimers: true,
+    globalRandom: true,
+
+    script: `
+		addEventListener("fetch", (event) => {
+			event.waitUntil(Promise.resolve(event.request.url));
+			event.respondWith(new Response(event.request.headers.get("X-Message")));
+		});
+		addEventListener("scheduled", (event) => {
+			event.waitUntil(Promise.resolve(event.scheduledTime));
+		});
+		`,
+  });
+
+  const env = await mf.getBindings();
+  // @ts-expect-error i don't know why
+  const platform: App.Platform = { env };
+  return platform;
+};

src/routes/+page.server.ts

@@ -1,6 +1,4 @@
 import type { Actions, PageServerLoad } from './$types';
-import { redirect } from '@sveltejs/kit';
-import { env } from '$env/dynamic/private';
 
 export const load: PageServerLoad = async ({ platform }) => {
   console.log({platform});
@@ -16,16 +14,11 @@ export const load: PageServerLoad = async ({ platform }) => {
 
 export const actions: Actions = {
   default: async ({ platform, request }) => {
-    const promises = [];
-    try {
       const data = await request.formData();
       const hello = data.get('hello') as string;
       console.log({ actions: 'yes', hello });
       if (hello) {
-        promises.push(platform?.env?.GIFTS.put('hello', hello));
+        await platform?.env?.GIFTS.put('hello', hello);
       }
-    } finally {
-      await Promise.all(promises);
     }
-  },
 };

src/routes/+page.svelte

@@ -8,7 +8,7 @@
 
 <h1>Welcome to SvelteKit</h1>
 <p>Data.hello is now {data.hello}</p>
-<form method="POST" use:enhance>
+<form method="POST">
   Change it to
   <input name="hello" bind:value={hello} type="text" />
   <input type="submit" />

wrangler.toml

@@ -1,4 +1,4 @@
-name = "giftideas"
+name = "svelte-local-cloudflare-dev-working"
 compatibility_date = "2023-01-11"
 
 [env.dev]