Can plugins use Web Worker?

lhr0909 · April 29, 2024, 10:20am

I have been searching on the internet and found some old plugins that was able to use Web Workers. But when I tried to run it myself, I got error of Worker is not a constructor.

Plugin in question: GitHub - RyotaUshio/obsidian-web-worker-example

Is this feature deprecated? Or this is not available at all? I would love to be able to host WASM-based code in a web worker so it doesn’t block the UI when it is running.

joethei · April 29, 2024, 11:35am

Plugins can use web worker, it would help if you could share your code.

lhr0909 · April 30, 2024, 8:46am

Hey @joethei , This is the plugin I am trying and the web worker example plugin is not working.

Meanwhile I am building my own plugin wanting to put Transformers.js into the plugin, and it is using WASM via onnxruntime-web. Since running neural net models are very compute intensive, I had to turn on the worker builds, and it is not working. For now I reverted to a branch that is working but not using web workers, it will halt the entire UI for a few seconds when the inferenceSession is running.

lhr0909 · April 30, 2024, 9:06am

Interesting, the web worker sample worked on a vault suddenly. I am going to keep experiment with it then.

lhr0909 · April 30, 2024, 10:54am

@joethei Hey Johannes, I have put together a branch that has loading issue with wasm. Here is the code:

Error message I am getting:

This might not have anything to do with web worker, but I don’t have a way to verify because bundled code is obfuscated. Will continue to investigate.

lhr0909 · April 30, 2024, 1:42pm

@joethei I finally arrived in the Worker is not a constructor error. Using Webpack to build this time (pnpm webpack in the project) and it gives me the following error:

Branch in question:

Also did a thread in the Transformers.js repository: [Question] Using transformers.js inside an Obsidian Plugin · Issue #291 · xenova/transformers.js · GitHub

WhiteNoise · April 30, 2024, 3:15pm

Please do not ping multiple time moderators and team members, it’s against the code of conduct.

L3m0n · May 3, 2024, 11:28am

@lhr0909 maybe this issue can help, at least with your first error message.

github.com/microsoft/onnxruntime

Worker Errror : Error: no available backend found. ERR: [wasm] TypeError: n(...).dirname is not a function

opened 07:19PM - 20 Aug 22 UTC

closed 05:28PM - 22 Aug 22 UTC

juliangdz

platform:web

Hi i need some help on this issue. I have a react-app built using create-rea…ct-app that loads the onnx models and does inference fine . The react app works fine . However my issue is encountered when i try to Create a Webview Application using electronjs with the react-app . The onnx backend wasm was loaded fine and the worker scripts loads the models and did inference when i use the script "start": "set BROWSER=none&&react-scripts start", "start-electron": "set ELECTRON_START_URL=http://localhost:3000&&electron .", Running npm run start and npm run start-electron in different terminals brings up the Developer Version of the Electron-react application and everything works fine without error . However i get the following error when i Try to package the Electron-React Application . I first run the build script to build the react app and copy my electron files to the build folder. Then i run the script "package": "set ELECTRON_BUILDER_ALLOW_UNRESOLVED_DEPENDENCIES=true&&electron-builder build -c.extraMetadata.main=build/electron/main.js --publish never", This creates a dist with the .exe. The following error is what i see in the devtools console Worker Eerrror : Error: no available backend found. ERR: [wasm] TypeError: n(...).dirname is not a function at inference-session-impl.js:170:39 at async h.create (backend-impl.js:51:31) I use ort.min.js and its files all exist in the public folder along with the wasm* files . Please provide some insight into this , i have tried a few methods trying to understand if its a issue with my package.json by checking my build files path , but i have overcome those issues by adding "homepage": "./",