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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":["aws-lambda","decorators","serverless","serverless-plugin","typescript"],"created_at":"2026-01-25T16:23:50.118Z","updated_at":"2026-01-25T16:23:50.791Z","avatar_url":"https://github.com/ericrav.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Configless with Serverless\n[![npm version](https://badge.fury.io/js/configless.svg)](https://badge.fury.io/js/configless)\n\nConfigless is a Serverless plugin and library of TypeScript decorators that set the config for Lambda functions in `serverless.yml`\nand provide middleware for common tasks.\n\n## Install\n\n```\nyarn add configless\n```\n\n## Example\n\n```ts\n@Service({\n  environment: { tableName: 'users-table' },\n})\nexport class UserService {\n  @Env() tableName: string;\n\n  @Endpoint('GET', '/users')\n  @Handler()\n  @Respond(200)\n  async getUsers() {\n    return getFromTable(this.tableName);\n  }\n\n  @Endpoint('POST', '/users')\n  @Handler()\n  @Respond(201)\n  async createUser(@Body() userData: object) {\n    const newUser = addToTable(this.tableName, userData);\n    return newUser;\n  }\n}\n```\n\nThen add a `functions.ts` file:\n\n```ts\nexport default addServices(exports, [\n  UserService,\n  OtherService,\n]);\n```\n\nAdd the plugin in `serverless.yml`, no `functions` config needed:\n\n```yaml\nplugins:\n  - configless/plugin\n```\n\nThe above will produce the following configuration:\n```yaml\nfunctions:\n  getUsers:\n    environment:\n      tableName: users-table\n    events:\n    - http:\n        method: GET\n        path: \"/users\"\n    handler: functions.service0_getUsers\n  createUser:\n    environment:\n      tableName: users-table\n    events:\n    - http:\n        method: POST\n        path: \"/users\"\n    handler: functions.service0_createUser\n```\n\n# Available Decorators\n\n## Handler\n\n```ts\n@Handler({ ...functionConfig }, { ...anotherConfig })\nasync someLambda(event, context) {}\n```\n\n`Handler` creates the config for the method and includes any passed config object.\nThe name of the method is the name of the Serverless function.\n\n`Handler` also wraps methods in an `AWS.Lambda#invoke` call.\n\n```ts\n@Handler()\nasync sendNotification(event) {}\n\n@Handler()\nasync sendMessage(event) {\n  // in production, instead of calling the actual method,\n  // it will invoke the appropriate AWS Lambda function and pass the event data\n  new NotificationService().sendNotification(data);\n}\n```\n\n## Service\n\n```ts\n@Serivce({ ...functionConfig })\nclass MyService {\n\n}\n```\n\n`Service` will copy a passed config object to each of its Handler methods.\nThe configs are deep merged together, with precedence given to the `@Handler` method's config.\n\n## Env\n\n```ts\n@Service()\nclass MyService {\n  @Env() envProperty: string; // process.env.envProperty\n\n  @Env('PROPERTY_NAME') localProperty: string; // process.env.PROPERTY_NAME\n}\n```\n\nClass properties marked with `@Env()` will be set a value from `process.env`.\nIf a string parameter is passed, it uses that as the environment variable key.\nOtherwise, it will use the name of the property.\n\n## Respond\n\n```ts\n@Endpoint('GET', '/users', { cors: true })\n@Handler()\n@Respond(200, { Header: 'value' })\nasync getUsers() {\n  return ['Bob', 'Kate', 'Giuseppe'];\n}\n```\n\n`Respond` transforms the return result of the method by making the result a JSON string and adding a status code.\nA second headers object parameter is optional.\n\nThe above method returns this result:\n```js\n{\n  statusCode: 200,\n  headers: { Header: 'value' },\n  body: '[\"Bob\",\"Kate\",\"Giuseppe\"]'\n}\n```\n\n## Body\n\n`Body` is a parameter decorator that passes in the result of `JSON.parse(event.body)`.\nIf needed, `event` and `context` will still be passed to the method.\n\n```ts\n@Handler()\nasync method(@Body() body, event, context) {\n  body === JSON.parse(event.body); // true\n}\n```\n\n# Handler Middleware\n\n## useEndpoint\n\n```ts\n@Handler(useEndpoint('GET', '/users', { cors: true }))\nasync getUsers() {}\n```\n\n`useEndpoint` adds an `http` event to the function's `events` list.\nIt must be passed an http method and a pathname.\nAny additional config can be passed as an object.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fericrav%2Fconfigless","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fericrav%2Fconfigless","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fericrav%2Fconfigless/lists"}