67 lines
1.7 KiB
JavaScript
67 lines
1.7 KiB
JavaScript
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 = (options, callback) => {
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let _callback = callback || (o => undefined);
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return through.obj(function (file, enc, cb) {
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let _options = Object.assign({}, options || {});
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if (file.isNull()) {
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return cb(null, file);
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}
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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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}
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const content = {
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[file.path]: {styles: file.contents ? file.contents.toString() : ''}
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};
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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(content, (errors, css) => {
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if (errors) {
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return cb(errors.join(' '));
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}
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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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}
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_callback(details);
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file.contents = new Buffer.from(css.styles);
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if (css.sourceMap) {
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const iMap = JSON.parse(css.sourceMap);
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const oMap = Object.assign({}, iMap, {
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file: path.relative(file.base, file.path),
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sources: iMap.sources.map(mapSrc => path.relative(file.base, mapSrc))
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});
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applySourceMap(file, oMap);
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}
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cb(null, file);
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});
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});
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};
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