feat(medusa): Expose error handler from middlewares

[zhangpengchen]

When defining custom endpoints, you would like to use

import { errorHandler } from "@medusajs/medusa"

instead of

import errorHandler from "@medusajs/medusa/dist/api/middlewares/error-handler"

e.g.

import { Router } from "express"
import store from "./routes/store"
import { errorHandler } from "@medusajs/medusa"

export default (rootDirectory: string): Router | Router[] => {
  const app = Router()
  
  store(app)

  app.use(errorHandler())

  return app;
}

Finally, the custom endpoints can return 400 Bad Request instead of 500 Internal Server Error.

[vercel]

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[changeset-bot]

🦋 Changeset detected

Latest commit: b090ede

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@medusajs/medusa	Patch

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[olivermrbl]

LGTM, thanks!