Monorepo: error handling tracking issue

[jochem-brouwer]

This issue summarizes issues/PRs raised in the past to improve monorepo error handling.

An old issue related to this is: #487

The core of the issue raised here is that errors themselves (new Error()) can only be distinguished by their error string. So, to compare errors (if a certain error is expected), can only be done by string. Therefore, changing the error string is a breaking issue. The idea here is to make a new class which extends Error, and add extra fields which can help for debug situations.

In EVM we already have EvmError:

export class EvmError {
  error: ERROR
  errorType: string

  constructor(error: ERROR) {
    this.error = error
    this.errorType = 'EvmError'
  }
}

The nice properties of this is that, if an error gets thrown, one can now:

catch(e: unknown) {
  if (e instanceof EvmError) {
    // error was thrown by evm, handle here
  } else {
    // another error (non-EVM) was thrown
  }
}

This old issue raises this idea as well: #1440 along with a discussion: #1439

There is also an old PR open which implements these ideas in a general was (in the util package) and errors in the block package: #1910

The general goal of this issue is:

• Ensure that monorepo-wide we align the way of error handling
• Errors are easily distinguishable by some kind of error code

This can be done per-package once we have created a way to base-handle these errors. (I will open a PR for this which also handles the errors that way in EVM)