packages/next/src/shared/lib/entry-constants.ts

export const UNDERSCORE_NOT_FOUND_ROUTE = '/_not-found'
export const UNDERSCORE_NOT_FOUND_ROUTE_ENTRY = `${UNDERSCORE_NOT_FOUND_ROUTE}/page`
export const UNDERSCORE_GLOBAL_ERROR_ROUTE = '/_global-error'
export const UNDERSCORE_GLOBAL_ERROR_ROUTE_ENTRY = `${UNDERSCORE_GLOBAL_ERROR_ROUTE}/page`