express-api-problem/dist/express-middleware.js

A minimal package to assist in returning RESTful exceptions in your APIs

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const http_status_codes_1 = require("http-status-codes");
const api_problem_1 = require("./api-problem");
exports.ExpressMiddleware = function (options = {}) {
    // Merge the options with defaults
    options = Object.assign({ stackTrace: true, contentType: 'application/problem+json' }, options);
    return function (err, req, res, next) {
        // For API problems, just respond with the error
        if (err instanceof api_problem_1.ApiProblem) {
            res
                .status(err.status)
                .header('Content-Type', options.contentType)
                .send(JSON.stringify(err));
            return;
        }
        // For Exceptions, create internal error exception
        if (err instanceof Error) {
            const error = new api_problem_1.ApiProblem({
                status: http_status_codes_1.INTERNAL_SERVER_ERROR,
                detail: err.message,
                additional: options.stackTrace
                    ? {
                        stack: (err === null || err === void 0 ? void 0 : err.stack) || undefined,
                    }
                    : undefined,
            });
            res
                .status(error.status)
                .header('Content-Type', options.contentType)
                .send(JSON.stringify(error));
            return;
        }
        next();
    };
};