Angular bug

[iCloudio]

Angular CLI: 12.0.5 Node: 14.17.1 Package Manager: npm 6.14.13 OS: win32 x64

Description

Hi, i'm trying to use dcc-utils with new empty Angular app, but i get this error : inherits_browser.js:5 --> Uncaught TypeError: Object prototype may only be an Object or null: undefined

To Reproduce

• ng new testangular
• cd testangular
• npm install dcc-utils
• in app.component.ts include library on top of file with const { DCC } = require('dcc-utils'); // and add constructor(){ console.log(DCC.fromRaw('dcc sample test string')); }

// ng serve now will produce first errors, that you can solve editing compiling options

• npm i -D @angular-builders/custom-webpack
• edit angular.json file in the root folder:

into architect.build --->

 "builder": "@angular-builders/custom-webpack:browser",
  "options": {
	  "customWebpackConfig": {
			  "path": "./custom-webpack.config.js"
	  },
  }

into architect.serve --->

 "builder": "@angular-builders/custom-webpack:dev-server",
  "options": {
    "browserTarget": "app:build"
  },

• create a file in the root of angular folder, named custom-webpack.config.js containing this code

const webpack = require('webpack');
const path = require('path');

module.exports = {
    plugins: [
        new webpack.ProvidePlugin({
            process: 'process/browser',
        }),
    ],
    resolve: {
        alias: { util$: path.resolve(__dirname, 'node_modules/util') },
        //mainFields: ['browser', 'module', 'main'],
        fallback: {
            "fs": false,
            "stream": false,
            "path": false,
            "crypto": false,
            "assert": false,
            "http": false,
            "https": false,
            "zlib": false,
            "util": false,
            "node-inspect-extracted": false,
        }
    }
}

• run npm i --save-dev @types/node
• in tsconfig.app -> compiler options -> "types":["node"]
• run ng serve to reproduce my error

I need help to be able to use this library in an Angular project, let me know if you need extra info, i will keep this issue update

Thank you for your precious help, Ciao

[iCloudio]

Hi, seems that Jimp and Cbor create circular dependency issue, i will try to import dcc utils directly in my Angular Project copying only the things that i needs and installing dependency package directly. Just to know if i can get this util working

i will keep this issue update, Thank you for your precious help

[astagi]

@ClaudioB25 ok! let me know! (sorry for my late response)

[astagi]

@ClaudioB25 any update?

[iCloudio]

Ciao Andrea, non sono riuscito a risolvere, temo ci siano delle incompatibilità. Ho ovviato creando un servizio apposito con node e Express e lo chiamo tramite http dalla mia app Angular. Saluti

[mferraricloudsurfers]

Why close this issue if the problem wasn't really solved? Ok the workaround, but a correct integration with Angular I think could be a good thing. No ?

[astagi]

@mferraricloudsurfers dcc-utils is designed to run on node, not browsers. I haven't tested it yet on browsers nor built a specific distribution for them. Any contribution to make it running on browsers without problems would be appreciated!

[amammoli]

Ciao Andrea, non sono riuscito a risolvere, temo ci siano delle incompatibilità. Ho ovviato creando un servizio apposito con node e Express e lo chiamo tramite http dalla mia app Angular. Saluti

ciao Claudio ma con questo codice si riesce a capire anche se il greenpass è scaduto?

[astagi]

@amammoli si, puoi controllare le date all'interno del certificato, poi ogni nazione può avere più o meno giorni di comporto a seconda delle regole nazionali. Per l'Italia sulla parte Node c'è questo https://github.com/italia/verificac19-sdk. Gli altri SDK ufficiali si trovano qua https://github.com/ministero-salute/it-dgc-verificac19-sdk-onboarding#lista-librerie

[amammoli]

ciao Andrea grazie mille si ho verificato e funziona. Ora credo ci saranno anche aggiornamenti relativi al super grenn pass....

Il giorno gio 9 dic 2021 alle ore 10:40 Andrea Stagi < @.***> ha scritto:

@amammoli https://github.com/amammoli si puoi controllare le date all'interno del certificato, poi ogni nazione può avere più o meno giorni di comporto a seconda delle regole nazionali. Per l'Italia sulla parte Node c'è questo https://github.com/italia/verificac19-sdk. Gli altri SDK ufficiali si trovano qua https://github.com/ministero-salute/it-dgc-verificac19-sdk-onboarding#lista-librerie

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