crypto-browserify shim is not usable

[ukch]

I would like to use the crypto-browserify module in my code, which should theoretically be possible as this module is fully supported in the browser. Unfortunately, upon loading my app I receive the following error:

System.err: ReferenceError: process is not defined
System.err: File: "file:///data/data/com.myapp/files/app/tns_modules/readable-stream/readable.js, line: 2, column: 4

I have done a bit of investigative work on this. Here is the chain of imports that lead to this error:

• My app:
  • imports crypto-browserify
    • imports create-hash
      • imports ripemd160
        • imports hash-base
          • imports stream -> converted to stream-browserify
            • imports readable-stream

readable-stream defines a browser field in its package.json:

  "browser": {
    "util": false,
    "./readable.js": "./readable-browser.js",
    "./writable.js": "./writable-browser.js",
    "./duplex.js": "./duplex-browser.js",
    "./lib/internal/streams/stream.js": "./lib/internal/streams/stream-browser.js"
  },

However, it would seem that the nativescript-nodeify library is ignoring this and falling back to the node.js file, which then fails due to the missing process global.

I found this line in the patch script: https://github.com/EddyVerbruggen/nativescript-nodeify/blob/97df5cc31c2104b698522c45e688badffe5b2d25/patch-npm-packages.js#L73

If I'm reading the code correctly, this script is unable to handle a browser field that is an object. Is that correct?

[m-abs]

As I read it, the script handles browser as an object just fine, but in readable-stream main is "readable.js" but the key in browser-object is "./readable.js".