93 lines
2.8 KiB
JavaScript
93 lines
2.8 KiB
JavaScript
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(function() {
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var Browsers, Prefixes, browserslist, cache, isPlainObject, postcss, timeCapsule,
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slice = [].slice;
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browserslist = require('browserslist');
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postcss = require('postcss');
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Browsers = require('./browsers');
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Prefixes = require('./prefixes');
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isPlainObject = function(obj) {
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return Object.prototype.toString.apply(obj) === '[object Object]';
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};
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cache = {};
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timeCapsule = function(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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return 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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var loadPrefixes, options, plugin, reqs;
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reqs = 1 <= arguments.length ? slice.call(arguments, 0) : [];
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if (reqs.length === 1 && isPlainObject(reqs[0])) {
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options = reqs[0];
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reqs = void 0;
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} else if (reqs.length === 0 || (reqs.length === 1 && (reqs[0] == null))) {
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reqs = void 0;
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} else if (reqs.length <= 2 && (reqs[0] instanceof Array || (reqs[0] == null))) {
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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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options || (options = {});
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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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}
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if (options.browsers != null) {
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reqs = options.browsers;
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}
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loadPrefixes = function(opts) {
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var browsers, key, stats;
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stats = options.stats;
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browsers = new Browsers(module.exports.data.browsers, reqs, opts, stats);
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key = browsers.selected.join(', ') + JSON.stringify(options);
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return cache[key] || (cache[key] = new Prefixes(module.exports.data.prefixes, browsers, options));
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};
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plugin = function(css, result) {
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var prefixes, ref;
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prefixes = loadPrefixes({
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from: (ref = css.source) != null ? ref.input.file : void 0,
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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);
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}
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if (options.add !== false) {
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return 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.info = function(opts) {
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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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module.exports.data = {
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browsers: require('caniuse-db/data.json').agents,
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prefixes: require('../data/prefixes')
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};
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module.exports.defaults = browserslist.defaults;
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module.exports.info = function() {
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return module.exports().info();
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};
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}).call(this);
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