Compile error with TypeScript 3.6

TensorFlow.js version

1.2.8

Browser version

node 12.6.0

Describe the problem or feature request

Packages using @tensorflow/tfjs-core fail to compile with TypeScript 3.6 because of a conflict between @types/webgl2@0.0.4 and the built-in webgl2 types added in TS 3.6.

node_modules/@types/webgl2/index.d.ts:582:13 - error TS2403: Subsequent variable declarations must have the same type.  Variable 'WebGL2RenderingContext' must be of type '{ new (): WebGL2RenderingContext; prototype: WebGL2RenderingContext; readonly ACTIVE_ATTRIBUTES: number; readonly ACTIVE_TEXTURE: number; readonly ACTIVE_UNIFORMS: number; readonly ALIASED_LINE_WIDTH_RANGE: number; ... 554 more ...; readonly WAIT_FAILED: number; }', but here has type '{ new (): WebGL2RenderingContext; prototype: WebGL2RenderingContext; readonly ACTIVE_ATTRIBUTES: number; readonly ACTIVE_TEXTURE: number; readonly ACTIVE_UNIFORMS: number; readonly ALIASED_LINE_WIDTH_RANGE: number; ... 555 more ...; readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: number; }'.

582 declare var WebGL2RenderingContext: {
                ~~~~~~~~~~~~~~~~~~~~~~

  node_modules/typescript/lib/lib.dom.d.ts:16450:13
    16450 declare var WebGL2RenderingContext: {
                      ~~~~~~~~~~~~~~~~~~~~~~
    'WebGL2RenderingContext' was also declared here.

This conflict was resolved in https://github.com/DefinitelyTyped/DefinitelyTyped/pull/36837 which created @types/webgl2@0.0.5. The only change is the removal of STENCIL_INDEX which does not appear to be used in this repo.

Updating to @types/webgl2@0.0.5 should allow projects with TS 3.6 to use @tensorflow/tfjs-core again.

Code to reproduce the bug / link to feature request

package.json

{
  "scripts": {
    "compile": "tsc"
  },
  "dependencies": {
    "@tensorflow/tfjs-core": "^1.2.8",
    "typescript": "^3.6.2"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "jsx": "preserve",
    "allowJs": true,
    "noEmit": true,
    "strict": true,
    "lib": ["dom", "esnext"]
  },
  "include": ["src"]
}

Create an empty src/index.ts and run yarn && yarn compile.

The fix can be confirmed with a resolution in the package.json:

  "resolutions": {
    "@types/webgl2": "0.0.5"
  }

[tafsiri]

Thanks for the info. FYI we usually suggest people add skipLibCheck to their tsconfig. https://www.tensorflow.org/js/tutorials/setup#typescript

[aristotekean]

npm i --save @types/webgl2 works for me