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# local-web-server
A simple web-server for productive front-end development.

**Requires node v4.0.0 or higher**.

## Synopsis
For the examples below, we assume we're in a project directory looking like this:

```sh
.
├── css
│   └── style.css
├── index.html
└── package.json
```

All paths/routes are specified using [express syntax](http://expressjs.com/guide/routing.html#route-paths). To run the example projects linked below, clone the project, move into the example directory specified, run `ws`.

### Static site

Fire up your static site on the default port:
```sh
$ ws
serving at http://localhost:8000
```

[Example](https://github.com/75lb/local-web-server/tree/master/example/simple).

### Single Page Application

You're building a web app with client-side routing, so mark `index.html` as the SPA.
```sh
$ ws --spa index.html
```

By default, typical SPA urls (e.g. `/user/1`, `/login`) would return `404 Not Found` as a file does not exist with that path. By marking `index.html` as the SPA you create this rule:

*If a static file at the requested path exists (e.g. `/css/style.css`) then serve it, if it does not (e.g. `/login`) then serve the specified SPA and handle the route client-side.*

[Example](https://github.com/75lb/local-web-server/tree/master/example/spa).

### Access Control

By default, access to all files is allowed (including dot files). Use `--forbid` to establish a blacklist:
```sh
$ ws --forbid '*.json' '*.yml'
serving at http://localhost:8000
```

[Example](https://github.com/75lb/local-web-server/tree/master/example/forbid).

### URL rewriting

Your application requested `/css/style.css` but it's stored at `/build/css/style.css`. To avoid a 404 you need a rewrite rule:

```sh
$ ws --rewrite '/css/style.css -> /build/css/style.css'
```

Or, more generally (matching any stylesheet under `/css`):

```sh
$ ws --rewrite '/css/:stylesheet -> /build/css/:stylesheet'
```

With a deep CSS directory structure it may be easier to mount the entire contents of `/build/css` to the `/css` path:

```sh
$ ws --rewrite '/css/* -> /build/css/$1'
```

this rewrites `/css/a` as `/build/css/a`, `/css/a/b/c` as `/build/css/a/b/c` etc.


#### Proxied requests

If the `to` URL contains a remote host, local-web-server will act as a proxy - fetching and responding with the remote resource.

Mount the npm registry locally:
```sh
$ ws --rewrite '/npm/* -> http://registry.npmjs.org/$1'
```

Map local requests for repo data to the Github API:
```sh
$ ws --rewrite '/:user/repos/:name -> https://api.github.com/repos/:user/:name'
```

[Example](https://github.com/75lb/local-web-server/tree/master/example/rewrite).

### Stored config

Use the same port and blacklist every time? Persist it to `package.json`:
```json
{
  "name": "example",
  "version": "1.0.0",
  "local-web-server": {
    "port": 8100,
    "forbid": "*.json"
  }
}
```

or `.local-web-server.json`
```json
{
  "port": 8100,
  "forbid": "*.json"
}
```

local-web-server will merge and use all config found, searching from the current directory upward. In the case both `package.json` and `.local-web-server.json` config is found in the same directory, `.local-web-server.json` will take precedence. Command-line options take precedence over all.

To inspect stored config, run:
```sh
$ ws --config
```

### Logging
By default, local-web-server outputs a simple, dynamic statistics view. To see traditional web server logs, use `--log-format`:

```sh
$ ws --log-format combined
serving at http://localhost:8000
::1 - - [16/Nov/2015:11:16:52 +0000] "GET / HTTP/1.1" 200 12290 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2562.0 Safari/537.36"
```

The format value supplied is passed directly to [morgan](https://github.com/expressjs/morgan). The exception is `--log-format none` which disables all output.

### Other usage

#### Debugging

Prints information about loaded middleware, arguments, remote proxy fetches etc.
```sh
$ ws --verbose
```

#### Compression

Serve gzip-compressed resources, where applicable
```sh
$ ws --compress
```

#### Disable caching

Disable etag response headers, forcing resources to be served in full every time.
```sh
$ ws --no-cache
```

#### mime-types
You can set additional mime-type/extension mappings, or override the defaults by setting a `mime` value in the stored config. This value is passed directly to [mime.define()](https://github.com/broofa/node-mime#mimedefine). Example:

```json
{
  "mime": {
    "text/plain": [ "php", "pl" ]
  }
}
```

[Example](https://github.com/75lb/local-web-server/tree/master/example/mime-override).

#### Log Visualisation
Instructions for how to visualise log output using goaccess, logstalgia or gltail [here](https://github.com/75lb/local-web-server/blob/master/doc/visualisation.md).

## Install
Ensure [node.js](http://nodejs.org) is installed first. Linux/Mac users may need to run the following commands with `sudo`.

```sh
$ npm install -g local-web-server
```

This will install the `ws` tool globally. To see the available options, run:
```sh
$ ws --help
```

## Distribute with your project
The standard convention with client-server applications is to add an `npm start` command to launch the server component.

1\. Install the server as a dev dependency

```sh
$ npm install local-web-server --save-dev
```

2\. Add a `start` command to your `package.json`:

```json
{
  "name": "example",
  "version": "1.0.0",
  "local-web-server": {
    "port": 8100,
    "forbid": "\\.json$"
  },
  "scripts": {
    "start": "ws"
  }
}
```

3\. Document how to build and launch your site

```sh
$ npm install
$ npm start
serving at http://localhost:8100
```

## API Reference

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* * *

&copy; 2015 Lloyd Brookes <75pound@gmail.com>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).