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73 lines
1.9 KiB
73 lines
1.9 KiB
2 years ago
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'use strict';
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const applySourceMap = require('vinyl-sourcemaps-apply');
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const CleanCSS = require('clean-css');
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const path = require('path');
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const PluginError = require('plugin-error');
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const through = require('through2');
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module.exports = function gulpCleanCSS(options, callback) {
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options = Object.assign(options || {});
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if (arguments.length === 1 && Object.prototype.toString.call(arguments[0]) === '[object Function]')
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callback = arguments[0];
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let transform = function (file, enc, cb) {
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if (!file || !file.contents)
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return cb(null, file);
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if (file.isStream()) {
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this.emit('error', new PluginError('gulp-clean-css', 'Streaming not supported!'));
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return cb(null, file);
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}
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if (file.sourceMap)
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options.sourceMap = JSON.parse(JSON.stringify(file.sourceMap));
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let contents = file.contents ? file.contents.toString() : '';
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let pass = {[file.path]: {styles: contents}};
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if (!options.rebaseTo && options.rebase !== false) {
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options.rebaseTo = path.dirname(file.path);
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}
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new CleanCSS(options).minify(pass, function (errors, css) {
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if (errors)
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return cb(errors.join(' '));
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if (typeof callback === 'function') {
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let details = {
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'stats': css.stats,
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'errors': css.errors,
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'warnings': css.warnings,
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'path': file.path,
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'name': file.path.split(file.base)[1]
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};
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if (css.sourceMap)
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details['sourceMap'] = css.sourceMap;
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callback(details);
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}
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file.contents = new Buffer(css.styles);
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if (css.sourceMap) {
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let map = JSON.parse(css.sourceMap);
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map.file = path.relative(file.base, file.path);
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map.sources = map.sources.map(function (src) {
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return path.relative(file.base, file.path)
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});
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applySourceMap(file, map);
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}
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cb(null, file);
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});
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};
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return through.obj(transform);
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};
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