next.js/packages/next/src/client/react-client-callbacks/on-recoverable-error.ts

// This module can be shared between both pages router and app router

import type { HydrationOptions } from 'react-dom/client'
import { isBailoutToCSRError } from '../../shared/lib/lazy-dynamic/bailout-to-csr'
import isError from '../../lib/is-error'
import { reportGlobalError } from './report-global-error'

const recoverableErrors = new WeakSet<Error>()

export function isRecoverableError(error: Error): boolean {
  return recoverableErrors.has(error)
}

export const onRecoverableError: HydrationOptions['onRecoverableError'] = (
  error,
  errorInfo
) => {
  // x-ref: https://github.com/facebook/react/pull/28736
  let cause = isError(error) && 'cause' in error ? error.cause : error
  // Skip certain custom errors which are not expected to be reported on client
  if (isBailoutToCSRError(cause)) return

  if (process.env.NODE_ENV !== 'production') {
    const { decorateDevError } =
      require('../../next-devtools/userspace/app/errors/stitched-error') as typeof import('../../next-devtools/userspace/app/errors/stitched-error')
    const causeError = decorateDevError(cause, errorInfo)
    recoverableErrors.add(causeError)
    cause = causeError
  }

  reportGlobalError(cause)
}