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reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["graphql","koa","koa-decorator","koa-jwt","koa-router","typescript"],"created_at":"2025-02-24T08:17:40.013Z","updated_at":"2026-03-01T19:02:02.240Z","avatar_url":"https://github.com/skmdev.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# koa-decorator-ts\n\nKoa Decorator (with TypeScript)\n\n# Installation\n\n```\nnpm i koa-decorator-ts --save\n/* or */\nyarn add koa-decorator-ts\n```\n\n# Introduction\n\nThis package is a decorator for koa, including the koa-router, graohql.\nYou can use decorators to define the path of routing or create a graphql resolver using existing koa controller\n\n# Usage\n\n\u003e app.js\n\n```javascript\nimport Koa from 'koa';\n// 1. Import Router\nimport Router from 'koa-decorator-ts/router';\n\nconst app = new Koa();\n// 2. Create router\nconst router = new Router({\n  dir: `${__dirname}/controllers` // The controllers directory\n});\n\n// [Optional] Graphql inital\nconst graphqlServer = new ApolloServer({ schema });\ngraphqlServer.applyMiddleware({ app });\n\n// 3. Register the routers\napp.use(router.routes());\napp.use(router.allowedMethods());\n\n...\n\napp.listen(8080);\n```\n\n\u003e /controllers/user.ts\n\n```javascript\nimport Koa from 'koa';\nimport {\n  Controller,\n  Route,\n  Middleware,\n  Required,\n  Graphql,\n  Priority,\n  Meta,\n} from 'koa-decorator-ts';\nimport { IsString } from 'class-validator';\n\nasync function middlewareLog(ctx: Koa.Context, next: Function) {\n  await next();\n}\n\n//use a class with decorators (class-validator) for validation\nclass PatchUserRequest{\n  @IsString()\n  userNickName!:string\n  @IsString()\n  userAddress!:string\n}\n\n// Prefix of api path\n@Controller('/user')\nclass UserController {\n  @Priority(-1000)\n  @Route.all('*')\n  async handleAll(ctx: Koa.Context, next: any) {\n    ctx.body = 'haha';\n  }\n\n  // Post /user/login\n  @Route.post('/login')\n  @Required({\n    // Require { userEmail, password } in the body\n    body: {\n      type: 'object',\n      properties: {\n        userEmail: {\n          type: 'string',\n        },\n        password: {\n          type: 'string',\n        },\n      },\n      required: ['userEmail', 'password'],\n    },\n  })\n  async login(ctx: Koa.Context) {\n    ctx.body = true;\n  }\n\n  // Get /user/:userId\n  @Route.get('/:userId')\n  @Middleware(middlewareLog) // Add Middleware\n  async getUserInfo(ctx: Koa.Context) {\n    ctx.body = { userName: 'skm', userEmail: 'skmdev@gmail.com' };\n  }\n\n  // Get /user?top=10\u0026star=1000000\n  @Route.get('/')\n  @Required({\n    query: {\n      type: 'object',\n      properties: {\n        top: { type: 'string' },\n        star: { type: 'string' },\n      },\n      required: ['top', 'star'],\n    },\n  }) // Require for \"top\", \"star\" in the query\n  @Middleware(middlewareLog)\n  async getUsers(ctx: Koa.Context) {\n    ctx.body = { userName: 'skm', userEmail: 'skmdev@gmail.com' };\n  }\n\n  // Patch /user/:userId\n  @Route.patch('/:userId')\n  @RequiredBody(PatchUserRequest) //do the same for query using @RequiredQuery\n  async updateUserInfo(ctx: Koa.Context) {\n    ctx.body = true;\n  }\n\n  // Put /user/:userId/follow\n  @Route.put('/:userId/follow')\n  async followUser(ctx: Koa.Context) {\n    ctx.body = true;\n  }\n\n  // Delete /user/:userId/follow\n  @Route.del('/:userId/follow')\n  async unfollowUser(ctx: Koa.Context) {\n    ctx.body = true;\n  }\n\n  @Meta({ test: 'cc' })\n  @Route.get('/meta')\n  async metaTest(ctx: Koa.Context) {\n    ctx.body = ctx.meta;\n  }\n\n  @Graphql\n  @Middleware(middlewareLog)\n  static async getUser(ctx: Koa.Context) {\n    const { args } = ctx.graphql!;\n\n    const users = [\n      { username: 'skmdev', role: 'admin', userEmail: 'skmdev29@gmail.com' },\n      { username: 'foo', role: 'user', userEmail: 'bar' },\n    ];\n\n    ctx.body = users.find((user) =\u003e user.username === args.username);\n  }\n\n  @Graphql // transfrom to graphql resolver\n  @Middleware(middlewareLog)\n  static async getUsersGraph(ctx: Koa.Context) {\n    /**\n     * const { root, args, info } = ctx.graphql;\n     *\n     * root is representing rootObject\n     *\n     * args is representing the arguments of request\n     *\n     * info is representing the graphql info\n     *\n     */\n    const { args } = ctx.graphql!;\n\n    const users = [\n      { username: 'skmdev', role: 'admin', userEmail: 'skmdev29@gmail.com' },\n      { username: 'foo', role: 'user', userEmail: 'bar' },\n    ];\n\n    // ctx.body is response data;\n    ctx.body = users.filter((user) =\u003e user.role === args.role);\n  }\n}\n\nexport default UserController;\n\n\n\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fskmdev%2Fkoa-decorator-ts","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fskmdev%2Fkoa-decorator-ts","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fskmdev%2Fkoa-decorator-ts/lists"}