[Core] react-native issues/regressions

[jeremymeng]

With this option from React-Native, our react-native conditional exports are respected, but issues also surface. Previously most of these were mapped to their browser version for react-native.

• core-rest-pipeline/src/util/inspect.ts is importing from "node:util", need a react-native version (same as browser should be good)
• core-rest-pipeline/src/util/concat.ts needs a react-native version (same as browser should be good too)
• core-rest-pipeline/src/util/userAgentPlatform.ts the dynamic import await import causing react-native error compiling JS code because it puts await in an non-async context.
  • could we do `import {...} from "react-native" but without adding a dependency on "react-native"? maybe just need to add a typing/declared module for it
• node js only policies also need react-native version: proxyPolicy. We could do no-op, instead of throwing like in browser version
• logger/src/log.ts is import fromnode:` modules, we probably could make a react-native version using same code from browser version. https://github.com/Azure/azure-sdk-for-js/blob/3afccc67ad10ed922b917bdda3cbe5f277c95be1/sdk/core/logger/src/log.ts#L4
• core-util/src/sha256.ts is importing from crypto
  • we could use a copy of browser version, which would require customers to provide polyfills for the crypto API that we use, or
  • we could implement react-native version using the platform API if possible. I only find that Expo provides some API but extra steps are needed for bare react-native projects https://docs.expo.dev/versions/latest/sdk/crypto/
  • is there a polyfill package that would work with import { createHash, createHmac } from "crypto"; with some resolver configuration?
• core-util/src/byteEncoding.ts is using Buffer, browser version should work too for react-native.

[jeremymeng]

originated from #29980

[tonylucgi]

Can you tell what the expected date is when this fixing gets into the release ?

[jeremymeng]

@tonylucgi the planned date for the July release is 7/11/2024