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Edit File: autoprefixer.js

'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var browserslist = require('browserslist');
var postcss = require('postcss');

var Browsers = require('./browsers');
var Prefixes = require('./prefixes');

function isPlainObject(obj) {
    return Object.prototype.toString.apply(obj) === '[object Object]';
}

var cache = {};

/* istanbul ignore next */
    result.warn('Greetings, time traveller. ' + 'We are in the golden age of prefix-less CSS, ' + 'where Autoprefixer is no longer needed for your stylesheet.');
}

module.exports = postcss.plugin('autoprefixer', function () {
    for (var _len = arguments.length, reqs = Array(_len), _key = 0; _key < _len; _key++) {
        reqs[_key] = arguments[_key];
    }

if (!options) {
        options = {};
    }

if (options.browser) {
        throw new Error('Change `browser` option to `browsers` in Autoprefixer');
    } else if (options.browserslist) {
        throw new Error('Change `browserslist` option to `browsers` in Autoprefixer');
    }

if (options.browsers) {
        reqs = options.browsers;
    }

if (typeof options.grid === 'undefined') {
        options.grid = false;
    }

var loadPrefixes = function loadPrefixes(opts) {
        var data = module.exports.data;
        var browsers = new Browsers(data.browsers, reqs, opts, options.stats);
        var key = browsers.selected.join(', ') + JSON.stringify(options);

if (!cache[key]) {
            cache[key] = new Prefixes(data.prefixes, browsers, options);
        }

return cache[key];
    };

plugin.options = options;

plugin.browsers = reqs;

plugin.info = function (opts) {
        opts = opts || {};
        opts.from = opts.from || process.cwd();

return require('./info')(loadPrefixes(opts));
    };

return plugin;
});

/**
 * Autoprefixer data
 */
module.exports.data = {
    browsers: require('caniuse-lite').agents,
    prefixes: require('../data/prefixes')
};

/**
 * Autoprefixer default browsers
 */
module.exports.defaults = browserslist.defaults;

/**
 * Inspect with default Autoprefixer
 */
module.exports.info = function () {
    return module.exports().info();
};

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