WEB PACK 5 WARNING

[ipodjms]

Helo.

After update my angular to 11 to 12, the build console input this warging:

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
- add a fallback 'resolve.fallback: { "crypto": require.resolve("crypto-browserify") }'
- install 'crypto-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
resolve.fallback: { "crypto": false }

where i include it? resolve.fallback: { "crypto": false } ??

[hqs5678]

解决方法:

1. 使用4.0 以下版本

2. 网上的方法, 大多都是这么说的, 但是对我的项目无效, 可能对你的项目有效, 可以一试
   在package.json 中, 在与devDependencies 同级 修改:

   "devDependencies": {
   ...
   },
   "browser": {
   "crypto": false
   }

[evanvosberg]

Should be fixed in 4.1.1

[christophercr]

@ipodjms AFAICT part of the issue with Webpack is indeed this library, so upgrading to v4.1.1 will definitely help.

But another part involved in my case was web3 library which also caused the compilation to fail due to the same error. For that I had to follow the steps described here to be able to compile/serve my app: https://github.com/ChainSafe/web3.js#web3-and-angular