Collection of plugins for use in your L³ application.
| Name | Description |
|---|---|
| AccessControlHeaders | Middleware to send Access-Control-* headers. |
| AppConfigPlugin | Middleware to support a file-based app configuration. |
| BasicAuthHandler | Middleware to prompt Basic Authentication. |
| CloudFrontCacheHeader | Middleware to send CloudFront Cache-Control header. |
| CookieParserPlugin | Middleware to parse/store incoming HTTP cookies. |
| ContentNegotiationJson | Middleware to enforce JSON content negotiation. |
| ContentTypeJsonHeader | Middleware to send JSON Content-Type header. |
| GoogleRecaptchaHandler | Middleware to validate Google ReCAPTCHA invisible responses. |
| PreflightOptionsHandler | Middleware to handle preflight requests. |
| SecretsManagerPlugin | Middleware to support AWS Secrets Manager based app configuration. |
| SessionPluginExample | Middleware example of validating a session that uses cookies. |
| SwaggerUIViewer | Middleware to generate Swagger UI viewer. |
Usage: lambda-lambda-lambda install [options] <PackageName>
Arguments:
PackageName Package name (Example: BasicAuthHandler)
Options:
-h, --help display help for command
Copy the package to your application /middleware and include accordingly.
// .. appName/src/app.js'use strict';constRouter=require('@lambda-lambda-lambda/router');// Load middleware.constplugin1=require(`${APP_ROOT}/middleware/PluginName1`);constplugin2=require(`${APP_ROOT}/middleware/PluginName2`);constplugin3=require(`${APP_ROOT}/middleware/PluginName3`);/** * @see AWS::Serverless::Function */exports.handler=(event,context,callback)=>{const{request, response}=event.Records[0].cf;constrouter=newRouter(request,response);// Executed in order (all routes) /api/*router.use(plugin1);router.use(plugin2);router.use(plugin3);// .. Router Methods};// .. appName/src/routes/foo.js'use strict';// Load middleware.constplugin1=require(`${APP_ROOT}/middleware/PluginName1`);constplugin2=require(`${APP_ROOT}/middleware/PluginName2`);constplugin3=require(`${APP_ROOT}/middleware/PluginName3`);/** * @export {Object} */module.exports={// Executed in order (route only) /api/foomiddleware: [plugin1,plugin2,plugin3],// .. Router Methods};From the plugin directory:
$ cd plugins/<pluginName>
Run ESLint on project sources:
$ npm run lint
Run Mocha integration tests:
$ npm run test
Going forward, it is recommended that you build your L³ application using async handlers in anticipation of the AWS changes below.
AWS Lambda plans to remove support for callback-based function handlers starting with Node.js 24. You will need to update this function to use an async handler to use Node.js 24 or later. For more information and to provide feedback on this change, see aws/aws-lambda-nodejs-runtime-interface-client#137
While backwards compatibity will be supported for older Node.js releases this support will eventually be phased out with the deprecation of nodejs22.x (Apr 30, 2027).
See AWS Node.js Supported Runtimes for support information.
If you fix a bug, or have a code you want to contribute, please send a pull-request with your changes. (Note: Before committing your code please ensure that you are following the Node.js style guide)
This package is maintained under the Semantic Versioning guidelines.
This package is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.
lambda-lambda-lambda/middleware is provided under the terms of the MIT license