WASM : Cannot find name 'EmscriptenModule'

[sbstcano]

Hi,
I can't compile my Angular 9 project because of this error.
I'm using version 2.3.0 of wasm.

ERROR in node_modules/@tensorflow/tfjs-backend-wasm/wasm-out/tfjs-backend-wasm.d.ts:18:44 - error TS2304: Cannot find name 'EmscriptenModule'.

[rthadur]

@sbstcano did you install Emscripten from here https://github.com/tensorflow/tfjs/tree/master/tfjs-backend-wasm#emscripten-installation ?

[sbstcano]

@sbstcano did you install Emscripten from here https://github.com/tensorflow/tfjs/tree/master/tfjs-backend-wasm#emscripten-installation ?

Yes, I tried and it doesn't help

[rthadur]

@sbstcano did you try with previous version ?

[sbstcano]

@sbstcano did you try with previous version ?

Yes and sadly it doesn't help. I tried with 2.1.0, 2.0.1, 1.7.4. I tried to downgrade my angular version to ^8. I tried ^10. Angular uses es5 and webpack. Can it be related?

[sivarajakani]

I also have this issue, you found a way to handle this issue?

[rthadur]

@jinjingforever gentle ping if you got chance to look in to this issue, thank you

[jinjingforever]

One way to fix this is to add "@types/emscripten" to the compilerOptions.types field in tsconfig.app.json. Here is what mine looks like:

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": [
      "@types/emscripten"
    ]
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ]
}

(if you don't have tsconfig.app.json, just edit the same field in tsconfig.json)

The reason is that: EmscriptenModule is defined in the emscriptem types package in the global namespace. By default, when an angular app is generated, the compilerOptions.types field is set to an empty array, which means the compiler will not automatically add these "globals" to your app.

Another fix would be to remove the empty compilerOptions.types field from tsconfig.json and tsconfig.app.json.

Please give it a try, and let me know any problems. I will also add this to our README file.

[google-ml-butler]

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