Refactor: Simplify notifications plugin

dev/helpers/testEmailAdapter.ts

@@ -1,38 +0,0 @@
-import type { EmailAdapter, SendEmailOptions } from 'payload'
-
-/**
- * Logs all emails to stdout
- */
-export const testEmailAdapter: EmailAdapter<void> = ({ payload }) => ({
-  name: 'test-email-adapter',
-  defaultFromAddress: 'dev@payloadcms.com',
-  defaultFromName: 'Payload Test',
-  sendEmail: async (message) => {
-    const stringifiedTo = getStringifiedToAddress(message)
-    const res = `Test email to: '${stringifiedTo}', Subject: '${message.subject}'`
-    payload.logger.info({ content: message, msg: res })
-    return Promise.resolve()
-  },
-})
-
-function getStringifiedToAddress(message: SendEmailOptions): string | undefined {
-  let stringifiedTo: string | undefined
-
-  if (typeof message.to === 'string') {
-    stringifiedTo = message.to
-  } else if (Array.isArray(message.to)) {
-    stringifiedTo = message.to
-      .map((to: { address: string } | string) => {
-        if (typeof to === 'string') {
-          return to
-        } else if (to.address) {
-          return to.address
-        }
-        return ''
-      })
-      .join(', ')
-  } else if (message.to?.address) {
-    stringifiedTo = message.to.address
-  }
-  return stringifiedTo
-}