broccoli-eyeglass

broccoli-eyeglass is a broccoli plugin that compiles .scss and .sass files with libsass and uses eyeglass for project and sass module support.

Installation

npm install --save-dev broccoli-eyeglass

Usage

In your Brocfile.js:

var compileSass = require('broccoli-eyeglass');

var outputDirectory = "dist";
var options = {
  cssDir: "assets/css",
  fullException: false
}
var outputTree = new compileSass(inputTrees, options);

• inputTrees: An array of trees that act as the include paths for libsass. If you have a single tree, pass [tree]. All sass files in these trees that are not prefixed with an underscore (a.k.a. a partial), will be compiled into a single output directory. Use the node-sass includePaths option to make other directories available for import without compiling them to css. Note that eyeglass will make sure that all your eyeglass-compatible sass modules can be imported.

• options: Except for the options that are specific to this plugin. All the rest are passed through eyeglass and then to node-sass.

Note: that the following node-sass options are managed by this plugin and must not be provided: file, data, outFile

Options

The following options are specific to this plugin:

• assets - Optional. A string or array of strings indicating the subdirectories where assets for the project can be found. This calls eyeglass.assets.addSource for each directory specified. If the options passed for these are not sufficient, use the configureEyeglass callback to call addSource with the options you need.

• assetsHttpPrefix - The subdirectory that assets are in relative to the httpRoot when generating urls to them.

• configureEyeglass - Optional. A callback function that is passed the eyeglass instance for a file so that it can be manipulated before compiling the Sass file. The arguments passed are:

  • eyeglass - The eyeglass instance.
  • sass - the node-sass instance.
  • details - the compilation details object which provides information about what is being compiled. See below for more information about the compilation details.

• cssDir - Required. The directory where CSS files should be written relative to the build output directory.

• discover - When true, will discover sass files to compile that are found in the sass directory. Defaults to true unless sourceFiles are specified.

• sassDir - The directory to look for scss files to compile. Defaults to tree root.

• fullException - When set to true, instead of generating a build error, the css output file will be written such that it displays a compilation failure in the browser. This is useful during development but should not be used for production builds. (Not yet implemented)

• renderSync - Force sass rendering to use node-sass's synchronous rendering. Defaults to false.

• relativeAssets - Whether to render relative links to assets. Defaults to false.

• sourceFiles - Array of file names or glob patterns (relative to the sass directory) that should be compiled. Note that file names must include the file extension (unlike @import in Sass). E.g.: ['application.scss']

• optionsGenerator - Function that accepts four arguments:

  • sassFile - The sass file being compiled.
  • cssFile - The place where broccoli-eyeglass plans to write the cssFile relative to the build output directory.
  • options - The compilation options that will be passed to eyeglass and then to node-sass. This is a copy of plugin's options and so it can be modified or augmented.
  • compilationCallback - This callback accepts a css filename and options to use for compilation. This callback can be invoked 0 or more times. Each time it is invoked, the sass file will be compiled to the provided css file name (relative to the output directory) and the options provided.

• verbose - When true, console logging will occur for each css file that is built along with timing information.

  In this way a sass file can be skipped or permuted during your build process by passing different options. Examples where this is useful include A/B testing or localization specific output. Note: if you invoke the callback more than once, you should change the output filename to avoid overwriting previous invocations' output.

Compilation Details

The compilation details object provides context about what is being compiled so that eyeglass and eyeglass integration code can make intelligent decisions about how to handle it.

• srcPath: The directory to which the sassFilename is relative.
• sassFilename: The path of the sass file being compiled (relative to srcPath).
• fullSassFilename: The absolute path of the Sass file.
• destDir: The directory where compiled css files are being written.
• cssFilename: The CSS filename relative to the destDir.
• fullCssFilename: The absolute path of the CSS file. (note: the file is not there yet, obviously)
• options: The sassOptions as returned by the options generator (if provided).

Examples

Do you like examples? You’re in luck!

1. Read through a number of example project set-ups in EXAMPLES.md.

2. Run those examples yourself by cding into an example underneath the examples folder.

Here’s a preview:

Example 1: The Simplest Possible Project

Consider the trivial project:

.
├── Brocfile.js
├── package.json
└── src
     ├── bar.scss
     ├── foo.scss
     └── _config.scss

With this Brocfile.js:

var BroccoliEyeglass = require('broccoli-eyeglass');

var options = {
  cssDir: 'css' /* This is the only required option */
};

var outputTree = new BroccoliEyeglass(['src'], options);

module.exports = outputTree;

You can build the project with the command

broccoli build dist

(after an npm install, of course).

With the default options, Broccoli-Eyeglass will discover all the Sass files that don’t start with an underscore, and compile them.

The result should be exactly this:

.
├── Brocfile.js
├── package.json
├── src
│    ├── bar.scss
│    ├── foo.scss
│    └── _config.scss
└── dist
    └── css
        ├── bar.css
        └── foo.css

More Examples

Go ahead and take a look at EXAMPLES.md!