middy-middleware-json-error-handler/lib/JSONErrorHandlerMiddleware.js

A middy JSON error handler middleware.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.JSONErrorHandlerMiddleware = void 0;
var tslib_1 = require("tslib");
/**
 * # JSON Error Handler Middleware
 */
/** An additional comment to make sure Typedoc attributes the comment above to the file itself */
var debug_1 = tslib_1.__importDefault(require("debug"));
var IErrorWithExpose_1 = require("./interfaces/IErrorWithExpose");
var IErrorWithStatusCode_1 = require("./interfaces/IErrorWithStatusCode");
var omit_1 = require("./helpers/omit");
var serialize_error_1 = require("serialize-error");
/** The actual middleware */
var JSONErrorHandlerMiddleware = /** @class */ (function () {
    /** Creates a new JSON error handler middleware */
    function JSONErrorHandlerMiddleware(_a) {
        var _b = _a === void 0 ? {} : _a, _c = _b.errorPropertiesToOmit, errorPropertiesToOmit = _c === void 0 ? ['stack', 'expose'] : _c;
        var _this = this;
        this.onError = function (request) { return tslib_1.__awaiter(_this, void 0, void 0, function () {
            var error;
            return tslib_1.__generator(this, function (_a) {
                error = request.error;
                if ((0, IErrorWithStatusCode_1.isErrorWithStatusCode)(error) && this.shouldExposeError(error)) {
                    this.logger("Responding with full error as statusCode is ".concat(error.statusCode));
                    request.response = {
                        body: JSON.stringify((0, omit_1.omit)(this.errorPropertiesToOmit, (0, serialize_error_1.serializeError)(error))),
                        statusCode: error.statusCode
                    };
                    return [2 /*return*/];
                }
                this.logger('Responding with internal server error');
                request.response = {
                    body: JSON.stringify({
                        message: 'Internal server error',
                        statusCode: 500
                    }),
                    statusCode: 500
                };
                return [2 /*return*/];
            });
        }); };
        this.logger = (0, debug_1.default)('middy-middleware-json-error-handler');
        this.logger('Setting up JSONErrorHandlerMiddleware');
        this.errorPropertiesToOmit = errorPropertiesToOmit;
    }
    JSONErrorHandlerMiddleware.create = function (options) {
        return new JSONErrorHandlerMiddleware(options);
    };
    JSONErrorHandlerMiddleware.prototype.shouldExposeError = function (error) {
        return (0, IErrorWithExpose_1.isErrorWithExpose)(error) ? error.expose : error.statusCode < 500;
    };
    return JSONErrorHandlerMiddleware;
}());
exports.JSONErrorHandlerMiddleware = JSONErrorHandlerMiddleware;
exports.default = JSONErrorHandlerMiddleware.create;
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