adapter-static error: new URL(url, import.meta.url) is not supported in SSR. even though SSR is disabled

[jquesada2016]

Describe the bug

I am trying to integrate a rust wasm-pack generated WASM module with Svelte Kit. Everything works fine in dev. This is meant to be a SPA, so I have disabled SSR in svelte.config.js. It's only when building that I get an error. I do have the fallback option set, as well.

Reproduction

1. Start a new empty SvelteKit project
2. Copy the following svelte config file
   svelte.config.js

import adapter from "@sveltejs/adapter-static";
import preprocess from "svelte-preprocess";

/** @type {import('@sveltejs/kit').Config} */
const config = {
  // Consult https://github.com/sveltejs/svelte-preprocess
  // for more information about preprocessors
  preprocess: [
    preprocess({
      postcss: true,
    }),
  ],

  kit: {
    ssr: false,

    adapter: adapter({ fallback: "index.html" }),

    // hydrate the <div id="svelte"> element in src/app.html
    target: "#svelte",

    vite: {
      resolve: {
        alias: {
          $wasm: "/src/lib/wasm/pkg",
        },
      },
    },
  },
};

export default config;

3. cd into /src/lib
4. Run wasm-pack new wasm
5. cd into new wasm folder
6. Run wasm-pack build --target web --release
7. cd back to the root of the SvelteKit project
8. Add the following to /src/routes/__layout.svelte

<script lang="ts" context="module">
  // WASM
  import init from "$wasm";
  
  // Svelte
  import type { Load } from "@sveltejs/kit";

  export const load: Load = async () => {
    await init();

    return { status: 200 };
  }
</script>

<slot />

9. Run npm run build
10. watch the errors

Logs

> system@0.0.1 build
> svelte-kit build

vite v2.6.14 building for production...
transforming (4) src/routes/print-label/__layout.reset.svelte9:15:09 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/routes/print-label/[id].svelte:12:36 'close' is not defined
10: </script>
11: 
12: <svelte:window on:afterprint={() => close()} />
                                        ^
13: 
14: {@html qrCode}
transforming (8) .svelte-kit/build/generated/manifest.js(node:6205) [DEP0148] DeprecationWarning: Use of deprecated folder mapping "./" in the "exports" field module resolution of the package at /home/joseprogdp/dev/commercial/USA Trade/system/node_modules/tslib/package.json.
Update this package.json to use a subpath pattern like "./*".
(Use `node --trace-deprecation ...` to show where the warning was created)
transforming (38) src/lib/firebase.config.ts9:15:10 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/components/dropdown.svelte:25:8 A11y: <a> element should have an href attribute
23:     {#each items as item, i}
24:       <li on:click={() => dispatch("click", { index: i, item })}>
25:         <a><slot name="item" {item} /></a>
            ^
26:       </li>
27:     {/each}
9:15:10 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/components/dropdown.svelte:5:11 Dropdown has unused export property 'hover'. If it is for external reference only, please consider using `export const hover`
3: // Props
4: export let placement = "bottom";
5: export let hover = false;
              ^
6: export let end = false;
7: export let items = [];
9:15:10 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/components/tooltip.svelte:3:11 Tooltip has unused export property 'open'. If it is for external reference only, please consider using `export const open`
1: <script lang="ts">// Props
2: export let tip;
3: export let open = false;
              ^
4: export let placement = "top";
5: export let kind = undefined;
9:15:10 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/components/tabs.svelte:16:6 A11y: '' is not a valid href attribute
14:   {#each tabs as tab, i}
15:     <a
16:       href=""
          ^
17:       class="tab"
18:       class:tab-active={i === activeTab}
9:15:10 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/components/tile.svelte:7:11 Tile has unused export property 'imageUrl'. If it is for external reference only, please consider using `export const imageUrl`
 5: export let price = undefined;
 6: export let href = undefined;
 7: export let imageUrl = "";
               ^
 8: </script>
 9: 
transforming (50) src/lib/components/textarea.svelte
🌼 daisyUI components 1.16.2  https://github.com/saadeghi/daisyui
  ✔︎ Including:  base, components, themes[22], utilities
  

🌼 daisyUI components 1.16.2  https://github.com/saadeghi/daisyui
  ✔︎ Including:  base, components, themes[22], utilities
  
✓ 55 modules transformed.
.svelte-kit/output/client/_app/assets/wasm_bg-994dcdb4.wasm                          134.91 KiB
.svelte-kit/output/client/_app/manifest.json                                         3.20 KiB
.svelte-kit/output/client/_app/pages/__layout.svelte-8384ae74.js                     3.16 KiB / gzip: 1.62 KiB
.svelte-kit/output/client/_app/error.svelte-56d68a3b.js                              1.56 KiB / gzip: 0.75 KiB
.svelte-kit/output/client/_app/pages/print-label/__layout.reset.svelte-156cdc52.js   0.72 KiB / gzip: 0.45 KiB
.svelte-kit/output/client/_app/start-868c57cb.js                                     19.53 KiB / gzip: 7.06 KiB
.svelte-kit/output/client/_app/pages/print-label/_id_.svelte-72b67461.js             0.99 KiB / gzip: 0.56 KiB
.svelte-kit/output/client/_app/pages/sign-in.svelte-b75cb3c1.js                      1.43 KiB / gzip: 0.80 KiB
.svelte-kit/output/client/_app/chunks/singletons-12a22614.js                         0.05 KiB / gzip: 0.06 KiB
.svelte-kit/output/client/_app/pages/index.svelte-00915e92.js                        22.69 KiB / gzip: 7.28 KiB
.svelte-kit/output/client/_app/chunks/button-be083e4d.js                             3.91 KiB / gzip: 1.46 KiB
.svelte-kit/output/client/_app/chunks/navigation-51f4a605.js                         0.11 KiB / gzip: 0.12 KiB
.svelte-kit/output/client/_app/assets/start-464e9d0a.css                             0.19 KiB / gzip: 0.15 KiB
.svelte-kit/output/client/_app/chunks/wasm-68f6d283.js                               11.59 KiB / gzip: 3.74 KiB
.svelte-kit/output/client/_app/assets/pages/__layout.svelte-99146126.css             59.12 KiB / gzip: 9.63 KiB
.svelte-kit/output/client/_app/chunks/vendor-50d652a9.js                             437.63 KiB / gzip: 104.47 KiB
vite v2.6.14 building SSR bundle for production...
transforming (1) .svelte-kit/build/app.js9:15:13 AM [vite-plugin-svelte] /home/joseprogdp/dev/commercial/USA Trade/system/src/routes/print-label/[id].svelte:12:36 'close' is not defined
10: </script>
11: 
12: <svelte:window on:afterprint={() => close()} />
                                        ^
13: 
14: {@html qrCode}
✓ 15 modules transformed.
[vite:asset-import-meta-url] `new URL(url, import.meta.url)` is not supported in SSR.
file: /home/joseprogdp/dev/commercial/USA Trade/system/src/lib/wasm/pkg/wasm.js:534:16
532: async function init(input) {
533:     if (typeof input === 'undefined') {
534:         input = new URL('wasm_bg.wasm', import.meta.url);
                     ^
535:     }
536:     const imports = {};
> `new URL(url, import.meta.url)` is not supported in SSR.
Error: `new URL(url, import.meta.url)` is not supported in SSR.
    at error (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/rollup/dist/shared/rollup.js:158:30)
    at throwPluginError (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/rollup/dist/shared/rollup.js:21793:12)
    at Object.error (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/rollup/dist/shared/rollup.js:22497:20)
    at Object.error (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/rollup/dist/shared/rollup.js:21969:38)
    at Object.transform (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:42802:30)
    at Object.<anonymous> (/home/joseprogdp/dev/commercial/USA Trade/system/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:43315:19)

System Info

System: `WSL2` running on `Windows 11`.
NodeJS Version: v16.9.1
SvelteKit Version: Latest
adapter-static Version: Latest

Severity

blocking all usage of SvelteKit

Additional Information

No response

[benmccann]

duplicate of #1896