A lean, modular web server for rapid full-stack development.

Lws is an application core for quickly launching a local web server. Behaviour is added via plugins giving you full control over how requests are processed and responses created.

• Supports HTTP, HTTPS and HTTP2.
• Small and 100% personalisable. Load and use only the behaviour required by your project.
• Attach a custom view to personalise how activity is visualised.
• Programmatic and command-line APIs.

Launch an HTTP server on the default port of 8000.

$ lws Listening at http://mba4.local:8000, http://127.0.0.1:8000, http://192.168.0.200:8000 

For HTTPS or HTTP2, pass the --https or --http2 flags respectively.

$ lws --http2 Listening at https://mba4.local:8000, https://127.0.0.1:8000, https://192.168.0.200:8000 

Now your server is running, the next step is to attach some middleware to process requests.

Install and use some middleware (lws-static and lws-index) to serve static files and directory listings.

$ npm install --save-dev lws-static lws-index $ lws --stack lws-static lws-index Listening at http://mba4.local:8000, http://127.0.0.1:8000, http://192.168.0.200:8000 

The current directory will now be available to explore at http://127.0.0.1:8000.

Install and use logging middleware. Note the lws- prefix is optional when supplying module names to --stack.

$ npm install --save-dev lws-log $ lws --stack log static index --log.format combined Listening at http://mba4.local:8000, http://127.0.0.1:8000, http://192.168.0.200:8000 ::ffff:127.0.0.1 - GET /lws.config.js HTTP/1.1 200 52 - 8.259 ms ::ffff:127.0.0.1 - GET /package.json HTTP/1.1 200 399 - 1.478 ms 

Lws uses Koa as its middleware engine. Here is a trivial plugin example, save the following code as example-middleware.js:

class ExamplePlugin { middleware () { return async (ctx, next) => { ctx.body = 'Hello from lws!' await next() } } } export default ExamplePlugin

Now launch an HTTP server using this middleware.

$ lws --stack example-middleware.js Listening at http://mba4.local:8000, http://127.0.0.1:8000, http://192.168.0.200:8000 $ curl http://127.0.0.1:8000 Hello from lws! 

$ npm install --save-dev lws 

• API Reference
  • Lws
  • Middleware plugin
  • View plugin

• lws plugin list.
• local-web-server, an lws distribution with the most common plugins already installed.

© 2016-25 Lloyd Brookes <opensource@75lb.com>.

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