enb/techs/css-stylus.js

Faster BEM/BEViS assembler

/**
 * css-stylus
 * ==========
 *
 * Технология устарела. Используйте пакет `enb-stylus`.
 */
var Vow = require('vow');
var stylus = require('stylus');

module.exports = require('./css').buildFlow()
    .name('css-stylus')
    .deprecated('enb', 'enb-stylus')
    .defineOption('variables')
    .useFileList(['css', 'styl'])
    .builder(function (sourceFiles) {
        var _this = this;
        var promise = Vow.promise();

        var css = sourceFiles.map(function (file) {
            var path = file.fullname;
            if (file.name.indexOf('.styl') !== -1) {
                return '/* ' + path + ':begin */\n' +
                    '@import "' + path + '";\n' +
                    '/* ' + path + ':end */\n';
            } else {
                return '@import "' + path + '";';
            }
        }).join('\n');

        var targetName = _this._target;
        var renderer = stylus(css)
            .define('url', function (url) {
                return new stylus.nodes.Literal('url(' + _this._resolveCssUrl(url.val, url.filename) + ')');
            });
        if (this._variables) {
            var variables = this._variables;
            Object.keys(variables).forEach(function (key) {
                renderer.define(key, variables[key]);
            });
        }

        _this._configureRenderer(renderer)
            .render(function (err, css) {
                if (err) {
                    promise.reject(err);
                }
                promise.fulfill(css);
            });

        return promise.then(function (css) {
            return _this._processIncludes(css, _this.node.resolvePath(targetName));
        });
    })
    .methods({
        _resolveCssUrl: function (data, filename) {
            return this._getCssPreprocessor()._resolveCssUrl(data, filename);
        },
        _configureRenderer: function (renderer) {
            return renderer;
        }
    })
    .createTech();