Please export EtaError type

[xuxucode]

Is your feature request related to a problem? Please describe.

We are using eta to render message codes (as named templates) to localized messages. Since there many message codes exist, lazy loading templates is decided. For example:

try {
  eta.render('@username_already_exists', { username: 'something' })
} catch (err) {
  if (err instanceof EtaError) { // Cannot find name 'EtaError'
                        ^
    eta.loadTemplate('@username_already_exists', '<%= it.username %> already exists.')
  }
  // render again
}

Describe the solution you'd like

Please export the EtaError, or export a more specific error, EtaTemplateNotFoundError for example.

[nebrelbug]

@xuxucode this seems like a good idea which I'll try to release soon. Do you think it would be helpful to have separate errors for different kinds of bugs, or is it sufficient to have just one exported error type?

[xuxucode]

Thanks. It's helpful to have separate errors, my 2 cents:

• EtaFileTempalteError: views not set, file path cannot be resolved, file not found
• EtaNamedTempalteError: named template not defined(loaded),
• EtaParseError: parsing template content failed
• EtaRuntimeError: runtime errors

[nebrelbug]

@xuxucode thanks for the input! I'll wait for a few days before working on this to see if others have feedback.

[nebrelbug]

I think this is a good idea. Desired behavior should be that Eta throws 4 different errors, each extended from one base Eta class:

• EtaFileResolutionError
• EtaNameResolutionError
• EtaParseError
• EtaRuntimeError

I don't have time to implement this right now, but anyone is welcome to submit a PR with this behavior.

[nebrelbug]

Closed by #276 :rocket: