kite-framework
Version:
Modern, fast, flexible HTTP-JSON-RPC framework
60 lines (59 loc) • 1.99 kB
JavaScript
;
/***
* Copyright (c) 2017 [Arthur Xie]
* <https://github.com/kite-js/kite>
*
* 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.
**/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getDependencies = exports.Inject = void 0;
require("reflect-metadata");
const MK_DEPENDENCIES = 'kite:dependencies';
/**
* Tell Kite to inject an "injectable" #Injectable# instance for a controller.
*
* An `@Inject()` target must be decorated with `@Injectable()`
*
* ```typescript
* // Service definition
* @Injectable()
* export class DatabaseService {
* async createUser(user: any) {
* // ...
* }
* }
*
* // Controller definition
* @Controller()
* export class UserCreateController {
* // inject a "DatabaseService" instance here
* @Inject()
* db: DatabaseService;
*
* @Entry()
* exec(name: string, password: string) {
* this.db.createUser({name, password});
* }
* }
* ```
*/
function Inject() {
return function (target, key) {
let dependencies = Reflect.getMetadata(MK_DEPENDENCIES, target) || new Map();
dependencies.set(key, Reflect.getMetadata('design:type', target, key));
Reflect.defineMetadata(MK_DEPENDENCIES, dependencies, target);
};
}
exports.Inject = Inject;
function getDependencies(target) {
return Reflect.getMetadata(MK_DEPENDENCIES, target);
}
exports.getDependencies = getDependencies;