/
localsLoader.js
52 lines (45 loc) · 1.31 KB
/
localsLoader.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
const loaderUtils = require('loader-utils');
const processCss = require('./processCss');
const { getImportPrefix, compileExports } = require('./utils');
module.exports = function loader(content) {
const callback = this.async();
const options = loaderUtils.getOptions(this) || {};
processCss(
content,
null,
{
loaderContext: this,
loaderOptions: options,
},
(err, result) => {
if (err) {
return callback(err);
}
// for importing CSS
const importUrlPrefix = getImportPrefix(this, options);
function importItemMatcher(item) {
const match = result.importItemRegExp.exec(item);
const idx = +match[1];
const importItem = result.importItems[idx];
const importUrl = importUrlPrefix + importItem.url;
return (
`" + require(${loaderUtils.stringifyRequest(this, importUrl)})` +
`[${JSON.stringify(importItem.export)}] + "`
);
}
let exportJs = compileExports(
result,
importItemMatcher.bind(this),
options.camelCase
);
if (exportJs) {
exportJs = `module.exports = ${exportJs};`;
}
return callback(null, exportJs);
}
);
};