[@astrojs/image] Unnecessary .wasm output

[kagankan]

What version of astro are you using?

1.8.0

Are you using an SSR adapter? If so, which one?

None

What package manager are you using?

npm

What operating system are you using?

Windows 10

Describe the Bug

Thank you for always developing Astro!
@astrojs/image integration is very useful to get image width and height. 😍

Problem

1. Clone reproduction repo.
2. Run npm install and npx astro build
3. There are .wasm files in dist/chunks folder after build.

To my understanding, wasm files are needed for image optimization, and not needed for getting image sizes.
I would like to disable this output, since I'm not using image optimization.

Want

Disable this output automatically when image optimization is not used,
or allow to turn off this manually.

Thank you.

Link to Minimal Reproducible Example

https://github.com/kagankan/astro-sample/tree/sample/image-integration

Participation

• I am willing to submit a pull request for this issue.

[danielberndt]

fyi this issue is also present when activating

  experimental: {
    assets: true,
  }

for astro 2.1.2.

Adding this to the config results in 5.3MB of .wasm files in dist/chunks

Note that this also happens when

  image: {
    service: "astro/assets/services/sharp",
  }

is set.

[danielberndt]

Is it maybe enough to extend this expression to also include .wasm files?

astro/packages/astro/src/core/build/static-build.ts

Line 328 in f208b5f

const files = await glob('**/*.mjs', {

[sujaykumarh]

Hello, Here's what i found,

this is the line of code that copies .wasm files which was added in PR#4738

astro/packages/astro/src/assets/vite-plugin-assets.ts

Line 192 in c341bd0

await copyWasmFiles(new URL('./chunks', dir));

the .wasm vendor files are present at https://github.com/withastro/astro/tree/main/packages/astro/src/assets/services/vendor/squoosh

i do not understand the need for wasm files to be present for a SSG site, having tested on astro v2.1.3 and with experimental feature astro:assets this seems unnecessary as images are optimized on build and no wasm file is loaded on any request on a SSG site after build

Possible solution

an option to disable export of .wasm files in astro.config.mjs would be helpful if wasm files are required to be present for some reason by default

// example config of astro.config.mjs
export default defineConfig({
  ....
  vite: {
    build: {
      assets: {
         export_wasm: false, // or export_vendor: false,
      },
    },
  },
});

[Princesseuh]

The WASM files are required during the build, they just aren't cleaned up properly.