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