Face-api.js: node-js examples not compiling

[kerloom]

To try and run the examples I do the following with a freshly cloned repo:

cd examples/examples-nodejs
npm i
tsc faceDetection.ts

I get the following error:

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; ... 556 more ...; readonly WAIT_FAILED: number; }', but here has type '{ new (): WebGL2RenderingContext; prototype: WebGL2RenderingContext; readonly ACTIVE_ATTRIBUTES: number; readonly ACTIVE_TEXTURE: number; ... 557 more ...; readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: number; }'.

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

  ../../../../../../usr/lib/node_modules/typescript/lib/lib.dom.d.ts:16485:13
    16485 declare var WebGL2RenderingContext: {
                      ~~~~~~~~~~~~~~~~~~~~~~
    'WebGL2RenderingContext' was also declared here.


Found 1 error.

I have the following:
tsc --version: 3.7.2
node --version: 12.13.0

I have tried adding skipLibCheck: true to tsconfig.json but it did not do any difference.

Do you have any idea why it is not working for node?

[FerX]

This command compile.
tsc --skipLibCheck faceDetection.ts
But then it doesn't work

error:

UnhandledPromiseRejectionWarning: TypeError: this.backend.register is not a function
    at Engine.registerTensor (/home/ff/nodejs/face-api.js/node_modules/@tensorflow/tfjs-core/dist/engine.js:468:30)

[justadudewhohacks]

Please check out @russellwmy's answer in this issue #376. Make sure you are using the same typescript (take a look at the package.json of the examples folder) and tfjs-core version as face-api.js.

[willfu]

same error, I tried #376, seems different errors. not work. I just used the default package.json.
tsc --version Version 3.7.3
node --version v12.13.1

tsc --skipLibCheck faceDetection.ts
there is no error.
but when I run node faceDetection.js
(node:25928) UnhandledPromiseRejectionWarning: TypeError: this.backend.register is not a function
at Engine.registerTensor (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\engine.js:468:30)
at new Tensor (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\tensor.js:246:21)
at Function.Tensor.make (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\tensor.js:261:16)
at makeTensor (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\ops\tensor_ops.js:98:28)
at Object.tensor (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\ops\tensor_ops.js:55:12)
at _loop_2 (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\io\io_utils.js:219:36)
at Object.decodeWeights (E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\io\io_utils.js:223:9)
at E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\io\weights_loader.js:255:66
at Array.forEach ()
at E:\face\face-api.js\node_modules\@tensorflow\tfjs-core\dist\io\weights_loader.js:253:44
(node:25928) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:25928) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[willfu]

got the reason. it seems the "npm i" in examples will get the tfjs 1.4.0 version, which is not compatible with face-api.js.

[kerloom]

Thanks! Just to make this clear for anyone else, you can fix by removng the caret (^) in the package.json for @tensorflow/tfjs-node and getting version 1.2.3 specifically. For example in the examples folder changing package.json to:

{
  "author": "justadudewhohacks",
  "license": "MIT",
  "dependencies": {
    "@tensorflow/tfjs-node": "1.2.3",
    "canvas": "^2.5.0",
    "face-api.js": "../../"
  }
}

[sbocconi]

just cloned the repository, with
tsc --version: 3.7.3
node --version: v13.3.0

cd face-api.js/examples/examples-nodejs
npm i
ts-node  faceDetection.ts

gives:

faceDetection.ts:1:26 - error TS2307: Cannot find module 'face-api.js'.

1 import * as faceapi from 'face-api.js';

[imgh1010]

Same scenario, and same results as @sbocconi.

node --version: 12.4.0
tsc --version: 3.7.4

[kerloom]

@sbocconi @imgh1010 What version of tfjs-node are you using? Did you change the version in package.json before installing with npm install as per my previous comment?

[sbocconi]

My package.json is as currently available in the repository:

{
  "author": "justadudewhohacks",
  "license": "MIT",
  "dependencies": {
    "@tensorflow/tfjs-node": "1.4.0",
    "canvas": "^2.6.0",
    "face-api.js": "../../"
  }
}

and the error does not depend on the version of tensorflow, but on the fact that face-api.js cannot be found.
I also tried with:

{
  "author": "justadudewhohacks",
  "license": "MIT",
  "dependencies": {
    "@tensorflow/tfjs-node": "1.4.0",
    "canvas": "^2.6.0",
    "face-api.js": "git+https://github.com/justadudewhohacks/face-api.js.git#master"
  }
}

but I get the same error, even after a npm install face-api.js

[sbocconi]

The solution was to first run

npm i && npm run-script build

in the root directory before trying to run the examples.

[homedawn]

however,I found :
examples/examples-nodejs/package.json
{
"author": "justadudewhohacks",
"license": "MIT",
"dependencies": {
"face-api.js": "../../" # this will happen circulate create
}
}
will circulate create face-api.js fold, is usually or not? @justadudewhohacks

[homedawn]

when I do "npm i" in console.

[homedawn]

The solution was to first run

npm i && npm run-script build

in the root directory before trying to run the examples.

when I do “npm i && npm run-script build”,and I get:

@tensorflow/[email protected] install /home/dzy/Project/face-api.js/node_modules/@tensorflow/tfjs-node
node scripts/install.js

CPU-linux-1.7.0.tar.gz

• Downloading libtensorflow
  [==============================] 15944787/bps 100% 0.0s
• Building TensorFlow Node.js bindings

[email protected] install /home/dzy/Project/face-api.js/node_modules/canvas
node-pre-gyp install --fallback-to-build

node-pre-gyp WARN Using needle for node-pre-gyp https download
[canvas] Success: "/home/dzy/Project/face-api.js/node_modules/canvas/build/Release/canvas.node" is installed via remote
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

added 442 packages from 783 contributors and audited 1741 packages in 170.919s

10 packages are looking for funding
run npm fund for details

found 8 low severity vulnerabilities
run npm audit fix to fix them, or npm audit for details

face-api.[email protected] build /home/dzy/Project/face-api.js
rm -rf ./build && rm -rf ./dist && npm run rollup && npm run rollup-min && npm run tsc && npm run tsc-es6

face-api.[email protected] rollup /home/dzy/Project/face-api.js
rollup -c rollup.config.js

loaded rollup.config.js with warnings
(!) Unused external imports
default imported from external module 'path' but never used

src/index.ts → dist/face-api.js...
created dist/face-api.js in 10.3s

face-api.[email protected] rollup-min /home/dzy/Project/face-api.js
rollup -c rollup.config.js --environment minify:true

loaded rollup.config.js with warnings
(!) Unused external imports
default imported from external module 'path' but never used

src/index.ts → dist/face-api.min.js...
created dist/face-api.min.js in 14.5s

face-api.[email protected] tsc /home/dzy/Project/face-api.js
tsc

face-api.[email protected] tsc-es6 /home/dzy/Project/face-api.js
tsc --p tsconfig.es6.json
And tsc faceDetection.ts, get same error.

[ronaldkuip]

Worked fine for me:

• npm install & npm run-script build (the remove commands for the directories fail on windows, remove them from package.json in the face-api.js\package.json file)
• run npm install in examples-nodejs
• running tsc faceDetection.ts fails with an error (duplicate librarydefinition WebGL2 or something)
• instead tsc --skipLibCheck faceDetection.ts and things run fine.

[homedawn]

@ronaldkuip I am also that add '--skipLibCheck' , but is fine?

[ronaldkuip]

ts-node faceDetection.ts should run in examples-nodejs directory.

Tsc -skipLibCheck.ts creates faceDetection.js

node faceDetection.js then runs fine too.

Van: homedawn [e-mail]
Verzonden: woensdag 6 mei 2020 02:52
Aan: justadudewhohacks/face-api.js [e-mail]
CC: ronaldkuip [e-mail]; Mention [e-mail]
Onderwerp: Re: [justadudewhohacks/face-api.js] node-js examples not compiling (#491)

@ronaldkuiphttps://github.com/ronaldkuip I am also that add '--skipLibCheck' , but is fine?

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