Remove built-in dependencies

[streamich]

Review and try to remove built-in Node.js module dependencies, so they are not bundled when building for web.

• [ ] path
• [ ] process
• [ ] stream — is there a way to make the stream module optional?
  • [ ] Or maybe explicitly install readable-stream as required dependency.
• [ ] buffer — create a thin wrapper around Uint8Array, when Buffer global is missing.
• [ ] util
  • [ ] util.inherits()
• [ ] Error messages
  • [ ] internal/errors.ts — Node-like errors vendored module
  • [ ] assert
    • [ ] assert.strictEqual()
    • [ ] assert()
  • [ ] url
    • [ ] url.URL
  • [ ] util
    • [ ] util.format()
    • [ ] util.inspect()

[abhishiv]

Hey @streamich shouldn't this list include stream as well since memfs uses Readable, Writable?

[streamich]

We will always need some stream implementation, due to fs.createReadStream() and fs.createWriteStream().

Maybe we could explicitly install readable-stream dependency, instead of relying on Node's built-in stream.