wishthis/node_modules/gulp-clean-css/index.js
2022-01-21 09:28:41 +01:00

66 lines
1.7 KiB
JavaScript

const applySourceMap = require('vinyl-sourcemaps-apply');
const CleanCSS = require('clean-css');
const path = require('path');
const PluginError = require('plugin-error');
const through = require('through2');
module.exports = (options, callback) => {
let _callback = callback || (o => undefined);
return through.obj(function (file, enc, cb) {
let _options = Object.assign({}, options || {});
if (file.isNull()) {
return cb(null, file);
}
if (file.isStream()) {
this.emit('error', new PluginError('gulp-clean-css', 'Streaming not supported!'));
return cb(null, file);
}
if (file.sourceMap) {
_options.sourceMap = JSON.parse(JSON.stringify(file.sourceMap));
}
const content = {
[file.path]: {styles: file.contents ? file.contents.toString() : ''}
};
if (!_options.rebaseTo && _options.rebase !== false) {
_options.rebaseTo = path.dirname(file.path);
}
new CleanCSS(_options).minify(content, (errors, css) => {
if (errors) {
return cb(errors.join(' '));
}
let details = {
'stats': css.stats,
'errors': css.errors,
'warnings': css.warnings,
'path': file.path,
'name': file.path.split(file.base)[1]
};
if (css.sourceMap) {
details['sourceMap'] = css.sourceMap;
}
_callback(details);
file.contents = new Buffer.from(css.styles);
if (css.sourceMap) {
const iMap = JSON.parse(css.sourceMap);
const oMap = Object.assign({}, iMap, {
file: path.relative(file.base, file.path),
sources: iMap.sources.map(mapSrc => path.relative(file.base, mapSrc))
});
applySourceMap(file, oMap);
}
cb(null, file);
});
});
};