Subtheme of barrio
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54 lines
1.3 KiB

2 years ago
'use strict';
const fancyLog = require('fancy-log');
const PluginError = require('plugin-error');
const through = require('through2');
const applySourceMap = require('vinyl-sourcemaps-apply');
const autoprefixer = require('autoprefixer');
const postcss = require('postcss');
module.exports = opts => {
return through.obj((file, enc, cb) => {
if (file.isNull()) {
cb(null, file);
return;
}
if (file.isStream()) {
cb(new PluginError('gulp-autoprefixer', 'Streaming not supported'));
return;
}
postcss(autoprefixer(opts)).process(file.contents.toString(), {
map: file.sourceMap ? {annotation: false} : false,
from: file.path,
to: file.path
}).then(res => {
file.contents = Buffer.from(res.css);
if (res.map && file.sourceMap) {
applySourceMap(file, res.map.toString());
}
const warnings = res.warnings();
if (warnings.length > 0) {
fancyLog('gulp-autoprefixer:', '\n ' + warnings.join('\n '));
}
setImmediate(cb, null, file);
}).catch(err => {
const cssError = err.name === 'CssSyntaxError';
if (cssError) {
err.message += err.showSourceCode();
}
// Prevent stream unhandled exception from being suppressed by Promise
setImmediate(cb, new PluginError('gulp-autoprefixer', err, {
fileName: file.path,
showStack: !cssError
}));
});
});
};