76 lines
1.5 KiB
Markdown
76 lines
1.5 KiB
Markdown
#Browsersync - Middleware + CSS example
|
|
|
|
## Installation/Usage:
|
|
|
|
To try this example, follow these 4 simple steps.
|
|
|
|
**Step 1**: Clone this entire repo
|
|
```bash
|
|
$ git clone https://github.com/Browsersync/recipes.git bs-recipes
|
|
```
|
|
|
|
**Step 2**: Move into the directory containing this example
|
|
```bash
|
|
$ cd bs-recipes/recipes/middleware.css.injection
|
|
```
|
|
|
|
**Step 3**: Install dependencies
|
|
```bash
|
|
$ npm install
|
|
```
|
|
|
|
**Step 4**: Run the example
|
|
```bash
|
|
$ npm start
|
|
```
|
|
|
|
### Additional Info:
|
|
|
|
- Perform changes to `app/css/main.less` to see live css injection
|
|
|
|
### Preview of `app.js`:
|
|
```js
|
|
/**
|
|
* Require Browsersync
|
|
*/
|
|
var browserSync = require("browser-sync");
|
|
|
|
/**
|
|
* Run the middleware on files that contain .less
|
|
*/
|
|
function lessMiddleware (req, res, next) {
|
|
var parsed = require("url").parse(req.url);
|
|
if (parsed.pathname.match(/\.less$/)) {
|
|
return less(parsed.pathname).then(function (o) {
|
|
res.setHeader('Content-Type', 'text/css');
|
|
res.end(o.css);
|
|
});
|
|
}
|
|
next();
|
|
}
|
|
|
|
/**
|
|
* Compile less
|
|
*/
|
|
function less(src) {
|
|
var f = require('fs').readFileSync('app' + src).toString();
|
|
return require('less').render(f);
|
|
}
|
|
|
|
/**
|
|
* Run Browsersync with less middleware
|
|
*/
|
|
browserSync({
|
|
files: "app/css/*.less",
|
|
server: "app",
|
|
injectFileTypes: ["less"],
|
|
/**
|
|
* Catch all requests, if any are for .less files, recompile on the fly and
|
|
* send back a CSS response
|
|
*/
|
|
middleware: lessMiddleware
|
|
});
|
|
|
|
```
|
|
|