Cannot npm run build, Error: Could not resolve "@node-rs/argon2-wasm32-wasi"

[joshdstockdale]

Describe the bug

Trying to build with adapter-cloudflare but I get the following error:

Using @sveltejs/adapter-cloudflare
✘ [ERROR] Could not resolve "@node-rs/argon2-wasm32-wasi"

node_modules/@node-rs/argon2/browser.js:1:14:
  1 │ export * from '@node-rs/argon2-wasm32-wasi'
    ╵               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can mark the path "@node-rs/argon2-wasm32-wasi" as external to exclude it from the bundle, which will remove this error and leave the unresolved path in the bundle.

Versions:
"@sveltejs/adapter-auto": "^3.0.0",
"@sveltejs/adapter-cloudflare": "^4.7.4",
"@sveltejs/kit": "^2.0.0",
"@sveltejs/vite-plugin-svelte": "^4.0.0",

I've tried a number of vite.config.ts fixes to mark the package as external but no success:

export default defineConfig({
	plugins: [sveltekit()],
	build: {
		rollupOptions: {
			external: ['@node-rs/argon2-wasm32-wasi']
		}
	},
	ssr: {
		noExternal: ['oslo']
	}
});

Also, my svelte.config.js:

const config = {
	// Consult https://svelte.dev/docs/kit/integrations
	// for more information about preprocessors
	preprocess: vitePreprocess(),

	kit: {
		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
		adapter: adapter({
			routes: {
				include: ['/*'],
				exclude: ['<all>']
			},
			platformProxy: {
				environment: undefined,
				experimentalJsonConfig: false,
				persist: false
			}
		}),
		alias: {
			'@/*': './src/lib/*'
		}
	}
};

Reproduction

https://stackblitz.com/edit/sveltejs-kit-template-default-fqgkti

Logs

> Using @sveltejs/adapter-cloudflare
✘ [ERROR] Could not resolve "@node-rs/argon2-wasm32-wasi"

    node_modules/@node-rs/argon2/browser.js:1:14:
      1 │ export * from '@node-rs/argon2-wasm32-wasi'
        ╵               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  You can mark the path "@node-rs/argon2-wasm32-wasi" as external to exclude it from the bundle, which will remove this error and leave the unresolved path in the bundle.

error during build:
Error: Bundling with esbuild failed with 1 error
    at adapt (file:///home/stockdale/Sites/deliverys-bane/node_modules/@sveltejs/adapter-cloudflare/index.js:140:11)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async adapt (file:///home/stockdale/Sites/deliverys-bane/node_modules/@sveltejs/kit/src/core/adapt/index.js:38:2)
    at async finalise (file:///home/stockdale/Sites/deliverys-bane/node_modules/@sveltejs/kit/src/exports/vite/index.js:908:7)
    at async Object.handler (file:///home/stockdale/Sites/deliverys-bane/node_modules/@sveltejs/kit/src/exports/vite/index.js:938:5)
    at async PluginDriver.hookParallel (file:///home/stockdale/Sites/deliverys-bane/node_modules/rollup/dist/es/shared/node-entry.js:20734:17)
    at async Object.close (file:///home/stockdale/Sites/deliverys-bane/node_modules/rollup/dist/es/shared/node-entry.js:21712:13)
    at async build (file:///home/stockdale/Sites/deliverys-bane/node_modules/vite/dist/node/chunks/dep-CB_7IfJ-.js:65466:17)
    at async CAC.<anonymous> (file:///home/stockdale/Sites/deliverys-bane/node_modules/vite/dist/node/cli.js:828:5)

System Info

This also happens on cloudflare trying to build but here's my system:

  System:
    OS: Linux 6.8 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
    CPU: (4) x64 Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
    Memory: 2.94 GB / 9.62 GB
    Container: Yes
    Shell: 5.2.21 - /bin/bash
  Binaries:
    Node: 23.3.0 - /usr/local/bin/node
    npm: 10.9.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 131.0.6778.85
  npmPackages:
    @sveltejs/adapter-auto: ^3.0.0 => 3.3.1 
    @sveltejs/adapter-cloudflare: ^4.7.4 => 4.7.4 
    @sveltejs/kit: ^2.0.0 => 2.8.3 
    @sveltejs/vite-plugin-svelte: ^4.0.0 => 4.0.2 
    svelte: ^5.0.0 => 5.2.7 
    vite: ^5.0.3 => 5.4.11

Severity

annoyance

Additional Information

No response

[eltigerchino]

Please provide a minimal reproduction.

[Devr-pro]

This a known issue, cloudflare itself doesn't support wasm modules, although don't know this can be fixed within sveltekit, would be very nice if so
For now noble hashes have a js implementation which works

[sepeth]

This a known issue, cloudflare itself doesn't support wasm modules, although don't know this can be fixed within sveltekit, would be very nice if so

But it says that it does on this page:

https://developers.cloudflare.com/workers/runtime-apis/webassembly/

WebAssembly ↗ (abbreviated Wasm) allows you to compile languages like Rust, Go, or C to a binary format that can run in a wide variety of environments, including web browsers ↗, Cloudflare Workers, and other WebAssembly runtimes.

[Devr-pro]

This a known issue, cloudflare itself doesn't support wasm modules, although don't know this can be fixed within sveltekit, would be very nice if so

But it says that it does on this page:

developers.cloudflare.com/workers/runtime-apis/webassembly

WebAssembly ↗ (abbreviated Wasm) allows you to compile languages like Rust, Go, or C to a binary format that can run in a wide variety of environments, including web browsers ↗, Cloudflare Workers, and other WebAssembly runtimes.

Oh yes sorry, I read that but whenever I tried to use the argon package, during build it doesn't seem to recognize wasm modules and fails it, I don't think that this is a issue within sveltekit itself, previously many people also reported this problem there, but there's no fix currently it seems.

[eltigerchino]

With #13132 merged, this error shouldn't appear. All bundling is delegated to Cloudflare's Wrangler during deployment.

[anhtuank7c]

I still faced this issue. I have to switch to bcryptjs as an alternative solution.

[eltigerchino]

I still faced this issue. I have to switch to bcryptjs as an alternative solution.

Can you expand on the issue that you encountered? Did you use the latest Cloudflare adapter when building and deploying your app?

[anhtuank7c]

@eltigerchino I have latest cloudflare adapter, I also enabled the compatibility_flags = ["nodejs_compat"]

"@sveltejs/adapter-cloudflare": "^5.0.3",

This issue just happen when I deploy to Cloudflare Pages, I can run the application very well on my local machine (MacOS 15.3.1)

[eltigerchino]

@eltigerchino I have latest cloudflare adapter, I also enabled the compatibility_flags = ["nodejs_compat"]

"@sveltejs/adapter-cloudflare": "^5.0.3",

This issue just happen when I deploy to Cloudflare Pages, I can run the application very well on my local machine (MacOS 5.3.1)

Can you create a minimal reproduction? Does the error happen on build or on deployment?

[anhtuank7c]

@eltigerchino sure, I will make a minimal repo to reproduce this issue.

[tropicbliss]

Faced the same issue, made my own version of the @node-rs/argon2 package in the meantime, though I don't think it works with Cloudflare Pages, only Cloudflare Workers for some reason.