| 1 | import { ProblemDetailsError } from "./ProblemDetailsError.js" |
| 2 | |
| 3 | /** |
| 4 | * Espera a que la promesa de un fetch termine. Si |
| 5 | * hay error, lanza una excepción. |
| 6 | * |
| 7 | * @param {Promise<Response> } servicio |
| 8 | */ |
| 9 | export async function consume(servicio) { |
| 10 | const respuesta = await servicio |
| 11 | if (respuesta.ok) { |
| 12 | return respuesta |
| 13 | } else { |
| 14 | const contentType = respuesta.headers.get("Content-Type") |
| 15 | if ( |
| 16 | contentType !== null && contentType.startsWith("application/problem+json") |
| 17 | ) |
| 18 | throw new ProblemDetailsError(await respuesta.json()) |
| 19 | else |
| 20 | throw new Error(respuesta.statusText) |
| 21 | } |
| 22 | } |
| 1 | <!DOCTYPE html> |
| 2 | <html lang="es"> |
| 3 | |
| 4 | <head> |
| 5 | |
| 6 | <meta charset="UTF-8"> |
| 7 | <meta name="viewport" content="width=device-width"> |
| 8 | |
| 9 | <title>Los datos recibidos no están en formato JSON</title> |
| 10 | |
| 11 | </head> |
| 12 | |
| 13 | <body> |
| 14 | |
| 15 | <h1>Los datos recibidos no están en formato JSON</h1> |
| 16 | |
| 17 | </body> |
| 18 | |
| 19 | </html> |
| 1 | /** |
| 2 | * Envía los datos de un formolario a la url usando la codificación |
| 3 | * multipart/form-data. |
| 4 | * @param {string} url |
| 5 | * @param {HTMLFormElement} formulario |
| 6 | * @param { "GET" | "POST"| "PUT" | "PATCH" | "DELETE" | "TRACE" | "OPTIONS" |
| 7 | * | "CONNECT" | "HEAD" } metodoHttp |
| 8 | */ |
| 9 | export function enviaFormRecibeJson(url, formulario, metodoHttp = "POST") { |
| 10 | return fetch( |
| 11 | url, |
| 12 | { |
| 13 | method: metodoHttp, |
| 14 | headers: { "Accept": "application/json, application/problem+json" }, |
| 15 | body: new FormData(formulario) |
| 16 | } |
| 17 | ) |
| 18 | } |
| 1 | import { muestraError } from "./muestraError.js" |
| 2 | |
| 3 | /** |
| 4 | * Intercepta Response.prototype.json para capturar errores de parseo |
| 5 | * y asegurar que se reporten correctamente en navegadores Chromium. |
| 6 | */ |
| 7 | { |
| 8 | const originalJson = Response.prototype.json |
| 9 | |
| 10 | Response.prototype.json = function () { |
| 11 | // Llamamos al método original usando el contexto (this) de la respuesta |
| 12 | return originalJson.apply(this, arguments) |
| 13 | .catch((/** @type {any} */ error) => { |
| 14 | // Corrige un error de Chrome que evita el manejo correcto de errores. |
| 15 | throw new Error(error) |
| 16 | }) |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | window.onerror = function ( |
| 21 | /** @type {string} */ _message, |
| 22 | /** @type {string} */ _url, |
| 23 | /** @type {number} */ _line, |
| 24 | /** @type {number} */ _column, |
| 25 | /** @type {Error} */ errorObject |
| 26 | ) { |
| 27 | muestraError(errorObject) |
| 28 | return true |
| 29 | } |
| 30 | |
| 31 | window.addEventListener('unhandledrejection', event => { |
| 32 | muestraError(event.reason) |
| 33 | event.preventDefault() |
| 34 | }) |
| 35 |
| 1 | import { ProblemDetailsError } from "./ProblemDetailsError.js" |
| 2 | |
| 3 | /** |
| 4 | * Muestra los datos de una Error en la consola y en un cuadro de alerta. |
| 5 | * @param { ProblemDetailsError | Error | null } error descripción del error. |
| 6 | */ |
| 7 | export function muestraError(error) { |
| 8 | |
| 9 | if (error === null) { |
| 10 | |
| 11 | console.error("Error") |
| 12 | alert("Error") |
| 13 | |
| 14 | } else if (error instanceof ProblemDetailsError) { |
| 15 | |
| 16 | const problemDetails = error.problemDetails |
| 17 | |
| 18 | let mensaje = |
| 19 | typeof problemDetails["title"] === "string" ? problemDetails["title"] : "" |
| 20 | if (typeof problemDetails["detail"] === "string") { |
| 21 | if (mensaje !== "") { |
| 22 | mensaje += "\n\n" |
| 23 | } |
| 24 | mensaje += problemDetails["detail"] |
| 25 | } |
| 26 | if (mensaje === "") { |
| 27 | mensaje = "Error" |
| 28 | } |
| 29 | console.error(error, problemDetails) |
| 30 | alert(mensaje) |
| 31 | |
| 32 | } else { |
| 33 | |
| 34 | console.error(error) |
| 35 | alert(error.message) |
| 36 | |
| 37 | } |
| 38 | |
| 39 | } |
| 1 | export class ProblemDetailsError extends Error { |
| 2 | |
| 3 | /** |
| 4 | * Detalle de los errores devueltos por un servicio. |
| 5 | * Crea una instancia de ProblemDetailsError. |
| 6 | * @param {object} problemDetails Objeto con la descripcipon del error. |
| 7 | */ |
| 8 | constructor(problemDetails) { |
| 9 | |
| 10 | super(typeof problemDetails["detail"] === "string" |
| 11 | ? problemDetails["detail"] |
| 12 | : (typeof problemDetails["title"] === "string" |
| 13 | ? problemDetails["title"] |
| 14 | : "Error")) |
| 15 | |
| 16 | this.problemDetails = problemDetails |
| 17 | |
| 18 | } |
| 19 | |
| 20 | } |