Javascript minify error with no explanation? | Dioxus Labs | Page 1

small umbra Mar 24, 2025, 5:26 PM

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I am adding a feature to my application. The feature works fine in my demo/example (link below -- sidenote: is this an example that you would like in the dioxus examples repo?)

However, in my actual application I get this error at the end of dx bundle:

ERROR Failed to minify js. Falling back to non-minified: failed to bundle javascript with swc
INFO Copying asset (3/4): /.../frontend-dioxus/target/dx/frontend-dioxus/release/web/public/wasm-bindgen/frontend-dioxus.js

And then despite claiming that it copied the js asset, the application doesn't actually work when I open the webpage with this console error: Uncaught (in promise) TypeError: init is not a function. But I have no explanation of specifically what went wrong in the initial error message. Is there some way to get more details? I've narrowed down the error to this line from the demo (again, it works in the demo, just when I copy-paste this function into my actual application and use it, it gives the above error):
https://github.com/rogusdev/dioxus-examples/blob/main/zip-file/src/main.rs#L151

Any thoughts on what could be going wrong? Or what I need to do to get more output to debug this error?

Thanks.

GitHub

dioxus-examples/zip-file/src/main.rs at main · rogusdev/dioxus-exam...

Examples with Dioxus. Contribute to rogusdev/dioxus-examples development by creating an account on GitHub.

ashen chasm Mar 24, 2025, 5:58 PM

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Try turning on the trace level in the CLI logging

small umbra Mar 24, 2025, 5:59 PM

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Which crate/namespace should I turn it on for to catch this? Or just blanket everything to see?...

ashen chasm Mar 24, 2025, 5:59 PM

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dioxus-cli-opt

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IIRC you can just press t while the CLI is open

small umbra Mar 24, 2025, 6:29 PM

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Thanks. t did not do anything during the compiling of dx bundle, and none of these added any logs (in fact most took away the error message while still being broken): RUST_LOG=trace or RUST_LOG=dioxus-cli-opt=trace or RUST_LOG=dioxus-cli-opt=debug

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To be explicit, here is my complete cmd, maybe I should be doing something different:
RUST_LOG=dioxus-cli-opt=trace DOMAIN=https://$HOSTNAME RUSTFLAGS="--cfg web_sys_unstable_apis" dx bundle --platform web --release (DOMAIN env var is for my app)

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That line does the build and shows no additional logs, nor even the trace error -- but it still fails to build the js properly

ashen chasm Mar 24, 2025, 11:10 PM

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The log level for the CLI is set by DIOXUS_LOG

small umbra Mar 24, 2025, 11:14 PM

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I will add that to my PR I need to push up for https://dioxuslabs.com/learn/0.6/cookbook/integrations/logging 😉

Dioxus | Fullstack crossplatform app framework for Rust

A fullstack crossplatform app framework for Rust. Supports Web, Desktop, SSR, Liveview, and Mobile.

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That did add more output, however it does not seem especially revealing to me, unfortunately:

... (a bunch of lines like the below)

  19.932s DEBUG Resolving ./snippets/dioxus-web-bf44d47c344f35d0/inline1.js from Real(
    "/.../frontend-dioxus/target/dx/frontend-dioxus/release/web/public/wasm-bindgen/frontend-dioxus.js",
) for Browser
  19.933s DEBUG Resolving env from Real(
    "/.../frontend-dioxus/target/dx/frontend-dioxus/release/web/public/wasm-bindgen/frontend-dioxus.js",
) for Browser
  19.933s TRACE resolve_exports(/.../frontend-dioxus/target/dx/frontend-dioxus/release/web/public/wasm-bindgen/frontend-dioxus.js)
  19.934s ERROR Failed to minify js. Falling back to non-minified: failed to bundle javascript with swc

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Is there anything in that which clarifies things in your mind? I assume that the resolve exports is failing, but not why

ashen chasm Mar 24, 2025, 11:16 PM

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Hmm, I'm not sure then...

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I don't see the fallback logic here: https://github.com/DioxusLabs/dioxus/blob/main/packages/cli-opt/src/js.rs#L230

GitHub

dioxus/packages/cli-opt/src/js.rs at main · DioxusLabs/dioxus

Fullstack app framework for web, desktop, mobile, and more. - DioxusLabs/dioxus

small umbra Mar 24, 2025, 11:18 PM

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Haha

ashen chasm Mar 24, 2025, 11:18 PM

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If you open an issue with a link to the repo here, I might be able to tweak some swc settings to get it working or at least get a better error message

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Currently finishing up some SEO docsite stuff, but the next few weeks will be focused on bug fixes

small umbra Mar 24, 2025, 11:19 PM

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Unfortunately I cannot share the actual repo, and my demo works fine... I will see if I can get it to break, but idk what the issue is...

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But thank you for helping me out here as much as you have!

small umbra Mar 25, 2025, 1:38 PM

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I think I may have figured out the problem and I am trying to get a minimal repro

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In order to isolate just the specific problem, can you tell me how I should add arbitrary static content (html files) to a dioxus app? Similar to SSG https://dioxuslabs.com/learn/0.6/guides/fullstack/static_site_generation but for just some random html file I want to have present.

Dioxus | Fullstack crossplatform app framework for Rust

A fullstack crossplatform app framework for Rust. Supports Web, Desktop, SSR, Liveview, and Mobile.

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I can manually copy it into target/dx/dioxus-example-zip-file/release/web/public/ but I'd like to put it in a static or public folder or something and have it go there automatically

ashen chasm Mar 25, 2025, 1:52 PM

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Files in the asset folder are copied into the asset folder inside the bundle. Other than that, you could use a script

small umbra Mar 25, 2025, 2:15 PM

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Yeah assets I know. I suppose I could simply point at /assets/file.html ...

#Javascript minify error with no explanation?