Documentation Is:

• Missing
• Needed
• Confusing
• Not Sure?

Please Explain in Detail...

If both an input plugin and output plugin have a generateBundle hook, the output plugin's hook runs first.
Is there a reason for this?

Your Proposal for Changes

Run output plugins last (if possible?).

Or provide a method on PluginContext that allows a hook to postpone itself until other hooks for the same phase have finished, like this:

async generateBundle() {
  await this.postpone()
  // Do stuff after all non-postponed `generateBundle` hooks have finished.
}