feat(plugin-core): new plugin-core package

[BethanyBerkowitz]

Status

READY

Description

Part of #1013.

This PR creates a plugin-core package, which extracts the aspects of the rollup-plugin and webpack packages that can be shared between the two. This will mean that we have consistency between these two packages (and any further build plugins) in the following areas:

1. Config options (defining required options and cleaning them)
2. Uploading sourcemaps to HB API
3. Uploading deploy notifications

This package includes aspects of both existing packages, mostly from https://github.com/honeybadger-io/honeybadger-js/blob/master/packages/rollup-plugin/src/hbUtils.ts and https://github.com/honeybadger-io/honeybadger-js/blob/master/packages/webpack/src/resolvePromiseWithWorkers.js.

There will be follow-up PRs to have webpack and rollup-plugin depend on plugin-core.

Todos

• Tests
• Documentation

[subzero10]

I would go for type declaration instead of interfaces:

export type HbPluginOptions = {
  // ....
}

[BethanyBerkowitz]

@subzero10 I modeled this README on the core package, which is available to the public but not encouraged for people to use. I think we actually may find circumstances later in which this may be useful for people to use directly... basically any time we recommend someone hit the sourcemap upload or deploy notification API in JS-land, they could probably use this instead. But I'd say let's use it for our own purposes first, and then decide if we want our users to use it or not later.