Update node-pre-gyp

[danschultzer]

The older node-pre-gyp 0.6.11 version prevented proper handling of electron runtime (as discussed in mapbox/node-pre-gyp#175). bindings.js can't resolve the proper build path for electron. Updating to 0.6.30 fixes the issue.

Resolves #430

[csanz]

I still get Error: Cannot find module 'opencv'

I chanted the local reference to use global reference instead and still fubar.

If I use the local version I get a different error... Error: Cannot find module '/Users/csanz/Apps/node-opencv/build/opencv/v6.0.0/Release/node-v48-darwin-x64/opencv.node'

[lapereirabr]

Me too, with node-pre-gyp 0.6.34 version.

Error: Não foi possível encontrar o módulo especificado.
\?\c:\PROJETOS_WEB\PROJETOS\src\Prototipo.rpi\node_modules\opencv\build\opencv\v6.0.0\Release\node-v48-win32-x64\opencv.node
at Error (native)
at Object.Module._extensions..node (module.js:597:18)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (c:\PROJETOS_WEB\PROJETOS\src\Prototipo.rpi\node_modules\opencv\lib\bindings.js:4:15)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)

[fakob]

I get the same error: Cannot find module '...node_modules/opencv/build/opencv/v6.0.0/Release/node-v54-darwin-x64/opencv.node'

My node-pre-gyp version is 0.6.36

Any idea how to make opencv work with electron?

[danschultzer]

@fakob we've OpenCV running with electron in this project: https://github.com/danschultzer/blazing-bookkeeper

[fakob]

@danschultzer thanks for the fast response. I will check it out.

[danschultzer]

@fakob no problem! You might also find this blog post useful: https://dreamconception.com/tech/electron-how-to-build-package-and-package-3rd-party-binaries-with-electron-builder/

It explains how to build and code sign third party libraries with electron. I also added some comments on OpenCV caveats.

[nicholasc]

I get the same thing using electron-builder install-app-deps. It's looking for node-v53-darwin-x64 when I launch the app using election app but electron-builder compiled electron-v1.6-darwin-x64

@csanz @lapereirabr @fakob any luck figuring out why it's still looking for the wrong module?

[fakob]

Hi @nicholasc

Sorry, I have too little insight why this is happening, but if I remember correctly this solved it for me:

export npm_config_target=1.6.10
export npm_config_arch=x64
export npm_config_target_arch=x64
export npm_config_disturl=https://atom.io/download/electron
export npm_config_runtime=electron
export npm_config_build_from_source=true
HOME=~/.electron-gyp npm install

Well, it worked for me at least with my setup. See
electron-react-boilerplate/electron-react-boilerplate#1148

[danschultzer]

@nicholasc I can't remember what I did to resolve it, but I remember seeing the same error. The reason for the happening is that the node V8 engine is different from electron's.

In my project I was using electron-boilerplate to do most of the setup, and I think the solution for me was just to run the commands in the right order. There's a readme section on how native modules should be installed.