mediatr-ts/lib/cjs/attributes/requestHandler.attribute.js

Mimic the famous MediatR csharp library see: (https://github.com/jbogard/MediatR)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var index_js_1 = require("../models/mappings/index.js");
/**
 * Decorate the requestHandler with this attribute
 *
 * @param value The request type
 */
var requestHandler = function (value) {
    return function (target) {
        var existingTypeMappings = index_js_1.typeMappings.requestHandlers.getAll().filter(function (x) { return x.requestClass === value; });
        if (existingTypeMappings.length > 0) {
            throw new Error("Request handler for ".concat(value.name, " has been defined twice. Make sure you only have one @requestHandler decorator for each request type."));
        }
        index_js_1.typeMappings.requestHandlers.add({
            requestClass: value,
            handlerClass: target
        });
    };
};
exports.default = requestHandler;
//# sourceMappingURL=requestHandler.attribute.js.map