forked from zhurui/management
126 lines
3.5 KiB
JavaScript
126 lines
3.5 KiB
JavaScript
'use strict';
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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; };
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var browserslist = require('browserslist');
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var postcss = require('postcss');
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var Browsers = require('./browsers');
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var Prefixes = require('./prefixes');
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function isPlainObject(obj) {
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return Object.prototype.toString.apply(obj) === '[object Object]';
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}
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var cache = {};
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function timeCapsule(result, prefixes) {
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if (prefixes.browsers.selected.length === 0) {
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return;
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}
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if (prefixes.add.selectors.length > 0) {
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return;
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}
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if (Object.keys(prefixes.add).length > 2) {
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return;
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}
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/* istanbul ignore next */
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result.warn('Greetings, time traveller. ' + 'We are in the golden age of prefix-less CSS, ' + 'where Autoprefixer is no longer needed for your stylesheet.');
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}
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module.exports = postcss.plugin('autoprefixer', function () {
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for (var _len = arguments.length, reqs = Array(_len), _key = 0; _key < _len; _key++) {
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reqs[_key] = arguments[_key];
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}
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var options = void 0;
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if (reqs.length === 1 && isPlainObject(reqs[0])) {
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options = reqs[0];
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reqs = undefined;
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} else if (reqs.length === 0 || reqs.length === 1 && !reqs[0]) {
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reqs = undefined;
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} else if (reqs.length <= 2 && (reqs[0] instanceof Array || !reqs[0])) {
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options = reqs[1];
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reqs = reqs[0];
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} else if (_typeof(reqs[reqs.length - 1]) === 'object') {
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options = reqs.pop();
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}
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if (!options) {
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options = {};
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}
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if (options.browser) {
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throw new Error('Change `browser` option to `browsers` in Autoprefixer');
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} else if (options.browserslist) {
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throw new Error('Change `browserslist` option to `browsers` in Autoprefixer');
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}
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if (options.browsers) {
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reqs = options.browsers;
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}
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if (typeof options.grid === 'undefined') {
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options.grid = false;
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}
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var loadPrefixes = function loadPrefixes(opts) {
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var data = module.exports.data;
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var browsers = new Browsers(data.browsers, reqs, opts, options.stats);
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var key = browsers.selected.join(', ') + JSON.stringify(options);
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if (!cache[key]) {
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cache[key] = new Prefixes(data.prefixes, browsers, options);
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}
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return cache[key];
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};
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var plugin = function plugin(css, result) {
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var prefixes = loadPrefixes({
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from: css.source && css.source.input.file,
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env: options.env
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});
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timeCapsule(result, prefixes);
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if (options.remove !== false) {
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prefixes.processor.remove(css, result);
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}
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if (options.add !== false) {
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prefixes.processor.add(css, result);
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}
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};
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plugin.options = options;
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plugin.browsers = reqs;
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plugin.info = function (opts) {
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opts = opts || {};
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opts.from = opts.from || process.cwd();
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return require('./info')(loadPrefixes(opts));
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};
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return plugin;
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});
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/**
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* Autoprefixer data
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*/
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module.exports.data = {
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browsers: require('caniuse-lite').agents,
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prefixes: require('../data/prefixes')
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};
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/**
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* Autoprefixer default browsers
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*/
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module.exports.defaults = browserslist.defaults;
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/**
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* Inspect with default Autoprefixer
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*/
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module.exports.info = function () {
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return module.exports().info();
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}; |