Rust generated WebAssembly in gatsby project

[glfmn]

Summary

I am including visualizations in my site built in Rust with web assembly as a target. I would prefer to keep the rust code in the same repo as the gatsby app like so:

.
├── content // site content...
├── src     // js components...
└── wasm    // rust project...
   ├── pkg  // built wasm files
   ├── src
   ├── target
   ├── Cargo.lock
   ├── Cargo.toml
   └── rustfmt.toml

The development server works well, but how do I get it to build?

Relevant information

The setup works when using gatsby develop, but causes errors in Gatsby build.

I get an error which appears to complain about not using an "import" statement to include the file. However, I load the wasm module as follows:

const [{ res: wasm, loading }, load] = useLoadable(() => import('../../../wasm/pkg'))

The issue may actually be inside the generated js glue code which imports the wasm files as:

import * as wasm from './glfmn_io_bg.wasm';

wasm/pkg
├── glfmn_io.d.ts
├── glfmn_io.js
├── glfmn_io_bg.d.ts
├── glfmn_io_bg.wasm
└── package.json

Build Error

 ERROR #98123  WEBPACK

Generating SSR bundle failed

WebAssembly module is included in initial chunk.
This is not allowed, because WebAssembly download and compilation must happen asynchronous.
Add an async splitpoint (i. e. import()) somewhere between your entrypoint and the WebAssembly module:
* ./.cache/static-entry.js --> ./.cache/sync-requires.js --> ./src/templates/series.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./src/components/backgrounds/astar.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/cave.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./.cache/sync-requires.js --> ./src/templates/post.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./.cache/sync-requires.js --> ./src/pages/index.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./src/templates/series.jsx --> ./src/components/layout.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./src/pages/index.jsx --> ./src/components/layout.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm
* ... --> ./.cache/sync-requires.js --> ./src/pages/404.jsx --> ./src/components/layout.jsx --> ./src/components/preview.jsx --> ./src/components/backgrounds.jsx --> ./src/components/backgrounds/astar.jsx --> ./wasm/pkg/glfmn_io.js --> ./wasm/pkg/glfmn_io_bg.wasm

File: wasm/pkg/glfmn_io_bg.wasm

Environment (if relevant)

File contents (if changed)

gatsby-config.js: N/A package.json: N/A gatsby-node.js: N/A gatsby-browser.js: N/A gatsby-ssr.js: N/A

[LekoArts]

Hi!

Sorry to hear you're running into an issue. To help us best begin debugging the underlying cause, it is incredibly helpful if you're able to create a minimal reproduction. This is a simplified example of the issue that makes it clear and obvious what the issue is and how we can begin to debug it.

If you're up for it, we'd very much appreciate if you could provide a minimal reproduction and we'll be able to take another look.

Thanks for using Gatsby! 💜

[gatsbot[bot]]

Hiya!

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[github-actions[bot]]

Hey again!

It’s been 30 days since anything happened on this issue, so our friendly neighborhood robot (that’s me!) is going to close it. Please keep in mind that I’m only a robot, so if I’ve closed this issue in error, I’m HUMAN_EMOTION_SORRY. Please feel free to reopen this issue or create a new one if you need anything else. As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out gatsby.dev/contribute for more information about opening PRs, triaging issues, and contributing!

Thanks again for being part of the Gatsby community! 💪💜

[JakubKoralewski]

That's not a good way to treat an issue...