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A middleware framework for handling HTTP with Deno 🐿️ 🦕
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/*! * Adapted directly from http-errors at * which is licensed as follows: * * The MIT License (MIT) * * Copyright (c) 2014 Jonathan Ong * Copyright (c) 2016 Douglas Christopher Wilson * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */
import { STATUS_TEXT } from "./deps.ts";import { ErrorStatus } from "./types.ts";
const errorStatusMap = new Map<string, ErrorStatus>();errorStatusMap.set("BadRequest", 400);errorStatusMap.set("Unauthorized", 401);errorStatusMap.set("PaymentRequired", 402);errorStatusMap.set("Forbidden", 403);errorStatusMap.set("NotFound", 404);errorStatusMap.set("MethodNotAllowed", 405);errorStatusMap.set("NotAcceptable", 406);errorStatusMap.set("ProxyAuthRequired", 407);errorStatusMap.set("RequestTimeout", 408);errorStatusMap.set("Conflict", 409);errorStatusMap.set("Gone", 410);errorStatusMap.set("LengthRequired", 411);errorStatusMap.set("PreconditionFailed", 412);errorStatusMap.set("RequestEntityTooLarge", 413);errorStatusMap.set("RequestURITooLong", 414);errorStatusMap.set("UnsupportedMediaType", 415);errorStatusMap.set("RequestedRangeNotSatisfiable", 416);errorStatusMap.set("ExpectationFailed", 417);errorStatusMap.set("Teapot", 418);errorStatusMap.set("MisdirectedRequest", 421);errorStatusMap.set("UnprocessableEntity", 422);errorStatusMap.set("Locked", 423);errorStatusMap.set("FailedDependency", 424);errorStatusMap.set("UpgradeRequired", 426);errorStatusMap.set("PreconditionRequired", 428);errorStatusMap.set("TooManyRequests", 429);errorStatusMap.set("RequestHeaderFieldsTooLarge", 431);errorStatusMap.set("UnavailableForLegalReasons", 451);errorStatusMap.set("InternalServerError", 500);errorStatusMap.set("NotImplemented", 501);errorStatusMap.set("BadGateway", 502);errorStatusMap.set("ServiceUnavailable", 503);errorStatusMap.set("GatewayTimeout", 504);errorStatusMap.set("HTTPVersionNotSupported", 505);errorStatusMap.set("VariantAlsoNegotiates", 506);errorStatusMap.set("InsufficientStorage", 507);errorStatusMap.set("LoopDetected", 508);errorStatusMap.set("NotExtended", 510);errorStatusMap.set("NetworkAuthenticationRequired", 511);
export class HttpError extends Error { expose = false; status = ErrorStatus.InternalServerError;}
function createHttpErrorConstructor<E extends typeof HttpError>( status: ErrorStatus): E { const name = `${ErrorStatus[status]}Error`; const Ctor = class extends HttpError { constructor(message?: string) { super(); this.message = message || STATUS_TEXT.get(status as any)!; this.status = status; this.expose = status >= 400 && status < 500 ? true : false; Object.defineProperty(this, "name", { configurable: true, enumerable: false, value: name, writable: true }); } }; return Ctor as E;}
const httpErrors: { [P in keyof typeof ErrorStatus]: typeof HttpError} = {} as any;
for (const [key, value] of errorStatusMap) { httpErrors[key as any] = createHttpErrorConstructor(value);}
/** Create a specific class of `HttpError` based on the status, which defaults * to _500 Internal Server Error_. */export function createHttpError( status: ErrorStatus = 500, message?: string): HttpError { return new httpErrors[ErrorStatus[status] as any](message);}
export default httpErrors;