Demo app cannot be built with the static adapter since the introduction of shadow endpoints (error 500 /todos)

Describe the bug

PR3679 has broken the demo application build process for static adapter. It now shows a 500 error when doing build.

Reproduction

Steps to reproduce: npm init svelte@next functions

Use TypeScript? … Yes Add ESLint for code linting? … Yes Add Prettier for code formatting? … Yes

cd functions npm install

---

Change adaptor to static in svelte.config.js import adapter from '@sveltejs/adapter-static';

Install the static adapter: npm install @sveltejs/adapter-static@next

Build project npm run build

npm run build

functions@0.0.1 build svelte-kit build

vite v2.8.0 building for production… ✓ 34 modules transformed. .svelte-kit/output/client/_app/assets/svelte-logo-87df40b8.svg 1.85 KiB .svelte-kit/output/client/_app/assets/fira-mono-greek-ext-400-normal-9e2fe623.woff2 7.33 KiB .svelte-kit/output/client/_app/assets/fira-mono-cyrillic-ext-400-normal-3df7909e.woff2 15.40 KiB .svelte-kit/output/client/_app/assets/fira-mono-latin-ext-400-normal-6bfabd30.woff2 11.10 KiB .svelte-kit/output/client/_app/assets/fira-mono-cyrillic-400-normal-c7d433fd.woff2 8.89 KiB .svelte-kit/output/client/_app/assets/fira-mono-greek-400-normal-a8be01ce.woff2 10.27 KiB .svelte-kit/output/client/_app/assets/fira-mono-latin-400-normal-e43b3538.woff2 15.90 KiB .svelte-kit/output/client/_app/assets/fira-mono-all-400-normal-1e3b098c.woff 75.55 KiB .svelte-kit/output/client/_app/manifest.json 2.51 KiB .svelte-kit/output/client/_app/pages/__layout.svelte-1fdcf5b9.js 4.76 KiB / gzip: 1.86 KiB .svelte-kit/output/client/_app/error.svelte-6f6d00da.js 1.56 KiB / gzip: 0.75 KiB .svelte-kit/output/client/_app/pages/index.svelte-92dd2217.js 4.08 KiB / gzip: 1.69 KiB .svelte-kit/output/client/_app/pages/about.svelte-64b29582.js 2.38 KiB / gzip: 1.09 KiB .svelte-kit/output/client/_app/pages/todos/index.svelte-0cc5f931.js 5.91 KiB / gzip: 2.40 KiB .svelte-kit/output/client/_app/chunks/singletons-a6a7384f.js 0.05 KiB / gzip: 0.07 KiB .svelte-kit/output/client/_app/start-f44d78f5.js 23.36 KiB / gzip: 7.95 KiB .svelte-kit/output/client/_app/assets/pages/todos/index.svelte-784042c1.css 3.70 KiB / gzip: 1.04 KiB .svelte-kit/output/client/_app/assets/pages/index.svelte-1d45bd0c.css 1.40 KiB / gzip: 0.50 KiB .svelte-kit/output/client/_app/assets/pages/about.svelte-bf4528fa.css 0.11 KiB / gzip: 0.10 KiB .svelte-kit/output/client/_app/chunks/vendor-ee294e9e.js 14.16 KiB / gzip: 6.04 KiB .svelte-kit/output/client/_app/assets/pages/__layout.svelte-15681802.css 4.96 KiB / gzip: 1.55 KiB vite v2.8.0 building SSR bundle for production… ✓ 36 modules transformed. .svelte-kit/output/server/manifest.json 2.15 KiB .svelte-kit/output/server/app.js 63.28 KiB .svelte-kit/output/server/entries/endpoints/todos/index.ts.js 1.23 KiB .svelte-kit/output/server/entries/pages/__layout.svelte.js 4.60 KiB .svelte-kit/output/server/entries/pages/error.svelte.js 0.72 KiB .svelte-kit/output/server/entries/pages/index.svelte.js 8.07 KiB .svelte-kit/output/server/entries/pages/about.svelte.js 1.30 KiB .svelte-kit/output/server/entries/pages/todos/index.svelte.js 5.84 KiB .svelte-kit/output/server/chunks/index-ee9fdf1a.js 4.24 KiB

Run npm run preview to preview your production build locally.

Using @sveltejs/adapter-static 500 /todos at file:///functions/node_modules/@sveltejs/kit/dist/chunks/index5.js:408:11 at visit (file:///functions/node_modules/@sveltejs/kit/dist/chunks/index5.js:585:4) at processTicksAndRejections (internal/process/task_queues.js:95:5)

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What has changed:

• Missing [uid].json.ts
• Missing index.json.ts
• New file index.ts

Logs

No response

System Info

System:
    OS: macOS 12.2
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 252.46 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 14.18.1 - /usr/local/bin/node
    Yarn: 1.22.14 - /usr/local/bin/yarn
    npm: 8.1.1 - /usr/local/bin/npm
  Browsers:
    Brave Browser: 91.1.26.67
    Chrome: 98.0.4758.80
    Safari: 15.3
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.17 
    @sveltejs/adapter-static: ^1.0.0-next.26 => 1.0.0-next.26 
    @sveltejs/kit: next => 1.0.0-next.265 
    svelte: ^3.46.0 => 3.46.4

Severity

blocking all usage of SvelteKit

Additional Information

No response

[geoffrich]

I guess I don’t understand what the issue is here. Yes, you could build the demo app with the static adapter before. However, the built app was then non-functional, since you couldn’t interact with the todo list without the server handlers. It’s a good thing that you are now made aware at build time that the production app will not function properly. If you want to build the demo app, you need to use an adapter that supports server endpoints at runtime, which the static adapter does not. The build-time error is expected and desired in this case.

Is there a SvelteKit app besides the demo app that should work with the static adapter and no longer does post the introduction of shadow endpoints?

[indaco]

UPDATE now both are on latest v275

• update the svelte.config.js

...
kit: {
   trailingSlash: 'always',
   adapter: adapter(),
   prerender: {
	entries: ['*']
}
...
}

• fixed the links on markdown (mdsvex) pages to avoid /404 during the build with adapter static

---

I have a couple of public websites ( sveltin.io and docs.sveltin.io ) using the static adapter.

Both work with sveltekit@1.0.0-next.264 and adaper-static@1.0.0-next.28

With sveltekit@1.0.0-next.265 and higher, the build process is ok but that the routing is affected (as per #3852 linked to this issue)

trailingSlash to any valid option does not work for me too.

adapter-static seems to me to be not aware of the “Pass trailingSlash config to adapters”(https://github.com/sveltejs/kit/pull/3820) like the vercel one

So far, I have to revert to sveltekit@1.0.0-next.264

Happy to share more info on it