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57 lines
1.5 KiB
57 lines
1.5 KiB
var loaderUtils = require('loader-utils');
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var autoprefixer = require('autoprefixer');
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var postcss = require('postcss');
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var path = require('path');
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var safe = require('postcss-safe-parser');
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module.exports = function (source, map) {
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if (this.cacheable) {
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this.cacheable();
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}
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var params = loaderUtils.parseQuery(this.query);
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if (params.browsers && !Array.isArray(params.browsers)) {
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params.browsers = params.browsers.split(',');
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}
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if (params.cascade === 'false') {
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params.cascade = false;
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}
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var options = {from: path.relative(this.options.context, this.resource)};
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if (params.safe) {
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delete params.safe;
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options.parser = safe;
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}
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var whitelist = {
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browsers: true,
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cascade: true,
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add: true,
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remove: true,
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};
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var unknownParams = [];
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for (var i in params) {
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if (!whitelist[i]) {
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unknownParams.push(i);
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}
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}
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if (unknownParams.length) {
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var warn = unknownParams.length === 1 ?
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'Autoprefixer-loader got this undocumented option: ' :
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'Autoprefixer-loader got these undocumented options: ';
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warn += unknownParams.join(', ');
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this.emitWarning(warn);
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}
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if (map) {
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options.map = {
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prev: map,
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};
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}
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var prefixer = autoprefixer(params);
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var processed = postcss([prefixer]).process(source, options);
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this.callback(null, processed.css, processed.map);
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};
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