I am trying to use tensorflow/tfjs (TF) in a web-worker in an angular project.
Creating a web-worker using the ng generate worker command works just fine.
Importing TF in a component is fine too.
However importing TF in the worker i.e. :
import * as tf from '@tensorflow/tfjs'
Generates a bunch of missing definition errors when building through the ng build command. Missing types are typically DOM-related types such as error TS2304: Cannot find name ImageData | HTMLImageElement | HTMLCanvasElement | HTMLVideoElement.
Those types are used in some definitions in TF and, as I understand, those types are not accessible with web-workers because DOM manipulation cannot be done from workers.
I am perfectly fine with that, my use of TF doesn't rely on those types. But I still need to find a way to build my worker.
I therefore tried to tinker with the tsconfig.worker.json file. My first attempt was to mimic the other tsconfig* files by adding "dom" in the compilerOptions.lib array :
["es2018", "webworker"]
replaced by
["es2018", "webworker", "dom"]
This results in conflicting types definitions
error TS6200: Definitions of the following identifiers conflict with those in another file
the webworker and dom libs have different definitions for the same types, but I can of course not remove the webworker lib reference.
My 2nd attempt was to add the skipTypeCheck compiler option in the tsconfig.worker.json file :
That works just fine, I got TF running in my web worker and outputting results.
BUT...
Skipping type checking feels like ripping of the whole idea of using typescript. So my question is :
Is there a cleaner way to use TF in a webworker in angular while preserving type checking ?
Thanks for your anwsers. Please let me know if I should provide more configuration details.