import { ERROR_PAGE_CSS } from './error-page-styles';
export declare function isFrameworkFrame(file: string): boolean;
/**
 * Render a simple production error page.
 *
 * Checks for a userland override at `resources/views/errors/<status>.html`
 * (or `error.html` as a generic fallback) first; renders the built-in
 * template only when no custom page is provided. stacksjs/stacks#863.
 */
export declare function renderProductionErrorPage(status: number): string;
/**
 * Render the contextual hint block (common causes, suggestion, doc link)
 * for a given HTTP status. Returns an empty string for statuses without
 * enriched data so the dev page degrades gracefully.
 */
export declare function renderHttpErrorHints(status: number): string;
/**
 * Create an error handler instance
 */
export declare function createErrorHandler(config?: ErrorPageConfig): ErrorPageHandler;
/**
 * Render an error page (alias)
 */
export declare function renderErrorPage(error: Error, status?: number, config?: ErrorPageConfig): Promise<string>;
/**
 * Render error (alias)
 */
export declare function renderError(error: Error, status?: number): Promise<string>;
/**
 * Create an error response
 */
export declare function errorResponse(error: Error, status?: number, config?: ErrorPageConfig): Promise<Response>;
/**
 * HTTP error definitions. Each entry includes a doc link, likely causes,
// and a concrete suggestion so the dev-mode error page reads like a hint
// instead of just "something went wrong".
 * @defaultValue
 * ```ts
 * {
 *   400: {
 *     status: 400,
 *     title: 'Bad Request',
 *     message: 'The request was malformed or invalid.',
 *     commonCauses: [ 'JSON body is missing or has a syntax error', 'A required field is absent from the payload', 'Content-Type header does not match the body format', ],
 *     suggestion: 'Inspect the request body and Content-Type — most 400s come from malformed JSON or a missing required field.'
 *   },
 *   401: {
 *     status: 401,
 *     title: 'Unauthorized',
 *     message: 'Authentication is required to access this resource.',
 *     commonCauses: [ 'No Authorization header was sent', 'The bearer token expired', 'The session cookie was cleared', ],
 *     suggestion: 'Confirm a valid `Authorization: Bearer <token>` header is sent and the token has not expired.'
 *   },
 *   403: {
 *     status: 403,
 *     title: 'Forbidden',
 *     message: 'You do not have permission to access this resource.',
 *     commonCauses: [ 'The authenticated user lacks the required ability or role', 'A Gate or policy denied access (see app/Gates.ts)', 'The token was issued without the needed ability', ],
 *     suggestion: 'Check Gates / policies and the abilities encoded in the access token.'
 *   },
 *   404: {
 *     status: 404,
 *     title: 'Not Found',
 *     message: 'The requested resource could not be found.',
 *     commonCauses: [ 'The route is not registered in app/Routes.ts', 'A typo in the URL path', 'A model lookup returned no row (ModelNotFoundError)', ],
 *     suggestion: 'Run `buddy route:list` to see registered routes, or verify the model exists with the given id.'
 *   },
 *   405: {
 *     status: 405,
 *     title: 'Method Not Allowed',
 *     message: 'The request method is not supported for this resource.',
 *     commonCauses: [ 'The route is registered for a different HTTP method', 'A form posted GET when the route expects POST', ],
 *     suggestion: 'Confirm the HTTP method in `app/Routes.ts` matches what the client sent.'
 *   },
 *   408: {
 *     status: 408,
 *     title: 'Request Timeout',
 *     message: 'The request took too long to complete.',
 *     commonCauses: [ 'A long-running query or external API call exceeded the timeout', 'The client uploaded a slow body that stalled', ],
 *     suggestion: 'Move slow work into a queued job, or raise the route timeout if the work is genuinely long.'
 *   },
 *   409: {
 *     status: 409,
 *     title: 'Conflict',
 *     message: 'The request conflicts with the current state of the resource.',
 *     commonCauses: [ 'A unique-constraint violation (duplicate email, slug, etc.)', 'Optimistic locking detected a stale write', ],
 *     suggestion: 'Re-fetch the resource and retry, or surface the conflict to the user.'
 *   },
 *   410: {
 *     status: 410,
 *     title: 'Gone',
 *     message: 'The requested resource is no longer available.',
 *     commonCauses: ['The resource was permanently deleted', 'A signed URL expired'],
 *     suggestion: 'Issue a fresh signed URL or fall back to the canonical resource.'
 *   },
 *   422: {
 *     status: 422,
 *     title: 'Unprocessable Entity',
 *     message: 'The request was well-formed but could not be processed.',
 *     commonCauses: [ 'Validation rules from the action / model rejected the payload', 'A field value is outside the allowed range or shape', ],
 *     suggestion: 'Inspect `errors` in the response body — each key maps to a failing field.'
 *   },
 *   429: {
 *     status: 429,
 *     title: 'Too Many Requests',
 *     message: 'You have exceeded the rate limit.',
 *     commonCauses: ['Rate-limit middleware tripped on this IP / token', 'A retry loop is hammering the endpoint'],
 *     suggestion: 'Honor the `Retry-After` response header and back off before retrying.'
 *   },
 *   500: {
 *     status: 500,
 *     title: 'Internal Server Error',
 *     message: 'An unexpected error occurred on the server.',
 *     commonCauses: [ 'An unhandled exception in an action or middleware', 'A failing database connection or migration', 'A misconfigured environment variable', ],
 *     suggestion: 'Check server logs for the original stack trace — the error page above shows the throw site in dev.'
 *   },
 *   502: {
 *     status: 502,
 *     title: 'Bad Gateway',
 *     message: 'The server received an invalid response from an upstream server.',
 *     commonCauses: ['An upstream HTTP API returned a malformed response', 'A reverse proxy could not reach the origin'],
 *     suggestion: 'Verify the upstream service is healthy and returning the expected content type.'
 *   },
 *   503: {
 *     status: 503,
 *     title: 'Service Unavailable',
 *     message: 'The service is temporarily unavailable.',
 *     commonCauses: ['Maintenance mode is enabled', 'A health check is failing', 'A dependency (db, redis, queue) is down'],
 *     suggestion: 'Run `buddy doctor` and check dependent services.'
 *   },
 *   504: {
 *     status: 504,
 *     title: 'Gateway Timeout',
 *     message: 'The upstream server did not respond in time.',
 *     commonCauses: ['An upstream HTTP call exceeded its deadline', 'A long-running database query timed out'],
 *     suggestion: 'Move the work to a queued job or raise the upstream timeout if the latency is expected.'
 *   }
 * }
 * ```
 */
export declare const HTTP_ERRORS: Record<HttpStatusCode, HttpError>;
/**
 * Error Page Rendering - Ignition-style error pages
 *
 * Provides beautiful development error pages with full stack traces,
 * database queries, and request context.
 */
// Types
export declare interface ErrorPageConfig {
  appName?: string
  theme?: 'light' | 'dark' | 'auto'
  showEnvironment?: boolean
  showQueries?: boolean
  showRequest?: boolean
  enableCopyMarkdown?: boolean
  snippetLines?: number
  basePaths?: string[]
  showFrameworkFrames?: boolean
}
export declare interface RequestContext {
  method: string
  url: string
  headers: Record<string, string>
  queryParams?: Record<string, string>
  body?: unknown
}
export declare interface RoutingContext {
  controller?: string
  routeName?: string
  middleware?: string[]
}
export declare interface UserContext {
  id?: string | number
  email?: string
  name?: string
}
export declare interface QueryInfo {
  query: string
  time?: number
  connection?: string
}
export declare interface StackFrame {
  file: string
  line: number
  column?: number
  function?: string
  code?: string
}
export declare interface CodeSnippet {
  file: string
  line: number
  code: string[]
  highlight: number
}
export declare interface EnvironmentContext {
  nodeVersion?: string
  platform?: string
  arch?: string
  env?: Record<string, string>
}
export declare interface JobContext {
  name?: string
  queue?: string
  attempts?: number
}
export declare interface ErrorPageData {
  error: Error
  status: number
  stack: StackFrame[]
  request?: RequestContext
  routing?: RoutingContext
  user?: UserContext
  queries?: QueryInfo[]
  environment?: EnvironmentContext
  job?: JobContext
  framework?: { name: string, version?: string }
}
export declare interface HttpError {
  status: HttpStatusCode
  title: string
  message: string
  docLink?: string
  commonCauses?: string[]
  suggestion?: string
}
export type HttpStatusCode = 400 | 401 | 403 | 404 | 405 | 408 | 409 | 410 | 422 | 429 | 500 | 502 | 503 | 504;
/**
 * Error Page Handler class
 */
export declare class ErrorPageHandler {
  constructor(config?: ErrorPageConfig);
  setFramework(name: string, version?: string): this;
  setRequest(request: Request | RequestContext): this;
  setRouting(routing: RoutingContext): this;
  setUser(user: UserContext): this;
  addQuery(query: string, time?: number, connection?: string): this;
  render(error: Error, status?: number): Promise<string>;
  handleError(error: Error, status?: number): Promise<Response>;
}
export { ERROR_PAGE_CSS };