lasso-minify-css-plugin.js

var sqwish = require('sqwish');

function minify(src, options) {
    if (!options) {
        options = {};
    }

    //var strict = options.mergeDuplicates !== false;
    return sqwish.minify(src, false);
}

function isInline(lassoContext) {
    if (lassoContext.inline === true) {
        return true;
    }

    if (lassoContext.dependency && lassoContext.dependency.inline === true) {
        return true;
    }

    return false;
}

module.exports = function (lasso, pluginConfig) {
    lasso.addTransform({
            contentType: 'css',

            name: module.id,

            stream: false,

            transform: function(code, lassoContext) {
                if (pluginConfig.inlineOnly === true && !isInline(lassoContext)) {
                    // Skip minification when we are not minifying inline code
                    return code;
                }

                var dependency = lassoContext.dependency;
                var mergeDuplicates = dependency ? dependency.mergeDuplicates !== false : true;

                var minified = minify(code, {
                    mergeDuplicates: mergeDuplicates
                });

                return minified;
            }
        });
};