next/dist/esm/build/webpack/loaders/css-loader/src/runtime/getUrl.js

The React Framework

module.exports = function(url, options) {
    if (!options) {
        options = {};
    }
    url = url && url.__esModule ? url.default : url;
    if (typeof url !== 'string') {
        return url;
    } // If url is already wrapped in quotes, remove them
    if (/^['"].*['"]$/.test(url)) {
        url = url.slice(1, -1);
    }
    if (options.hash) {
        url += options.hash;
    } // Should url be wrapped?
    // See https://drafts.csswg.org/css-values-3/#urls
    if (/["'() \t\n]/.test(url) || options.needQuotes) {
        return '"'.concat(url.replace(/"/g, '\\"').replace(/\n/g, '\\n'), '"');
    }
    return url;
};

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