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- 'use strict';
- var browserslist = require('browserslist');
- function capitalize(str) {
- return str.slice(0, 1).toUpperCase() + str.slice(1);
- }
- var names = {
- ie: 'IE',
- ie_mob: 'IE Mobile',
- ios_saf: 'iOS',
- op_mini: 'Opera Mini',
- op_mob: 'Opera Mobile',
- and_chr: 'Chrome for Android',
- and_ff: 'Firefox for Android',
- and_uc: 'UC for Android'
- };
- var prefix = function prefix(name, prefixes) {
- var out = ' ' + name + ': ';
- out += prefixes.map(function (i) {
- return i.replace(/^-(.*)-$/g, '$1');
- }).join(', ');
- out += '\n';
- return out;
- };
- module.exports = function (prefixes) {
- if (prefixes.browsers.selected.length === 0) {
- return 'No browsers selected';
- }
- var versions = {};
- for (var _iterator = prefixes.browsers.selected, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
- var _ref;
- if (_isArray) {
- if (_i >= _iterator.length) break;
- _ref = _iterator[_i++];
- } else {
- _i = _iterator.next();
- if (_i.done) break;
- _ref = _i.value;
- }
- var browser = _ref;
- var _browser$split = browser.split(' '),
- name = _browser$split[0],
- version = _browser$split[1];
- name = names[name] || capitalize(name);
- if (versions[name]) {
- versions[name].push(version);
- } else {
- versions[name] = [version];
- }
- }
- var out = 'Browsers:\n';
- for (var _browser in versions) {
- var list = versions[_browser];
- list = list.sort(function (a, b) {
- return parseFloat(b) - parseFloat(a);
- });
- out += ' ' + _browser + ': ' + list.join(', ') + '\n';
- }
- var coverage = browserslist.coverage(prefixes.browsers.selected);
- var round = Math.round(coverage * 100) / 100.0;
- out += '\nThese browsers account for ' + round + '% of all users globally\n';
- var atrules = '';
- for (var name in prefixes.add) {
- var data = prefixes.add[name];
- if (name[0] === '@' && data.prefixes) {
- atrules += prefix(name, data.prefixes);
- }
- }
- if (atrules !== '') {
- out += '\nAt-Rules:\n' + atrules;
- }
- var selectors = '';
- for (var _iterator2 = prefixes.add.selectors, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
- var _ref2;
- if (_isArray2) {
- if (_i2 >= _iterator2.length) break;
- _ref2 = _iterator2[_i2++];
- } else {
- _i2 = _iterator2.next();
- if (_i2.done) break;
- _ref2 = _i2.value;
- }
- var selector = _ref2;
- if (selector.prefixes) {
- selectors += prefix(selector.name, selector.prefixes);
- }
- }
- if (selectors !== '') {
- out += '\nSelectors:\n' + selectors;
- }
- var values = '';
- var props = '';
- for (var _name in prefixes.add) {
- var _data = prefixes.add[_name];
- if (_name[0] !== '@' && _data.prefixes) {
- props += prefix(_name, _data.prefixes);
- }
- if (!_data.values) {
- continue;
- }
- for (var _iterator3 = _data.values, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
- var _ref3;
- if (_isArray3) {
- if (_i3 >= _iterator3.length) break;
- _ref3 = _iterator3[_i3++];
- } else {
- _i3 = _iterator3.next();
- if (_i3.done) break;
- _ref3 = _i3.value;
- }
- var value = _ref3;
- var string = prefix(value.name, value.prefixes);
- if (values.indexOf(string) === -1) {
- values += string;
- }
- }
- }
- if (props !== '') {
- out += '\nProperties:\n' + props;
- }
- if (values !== '') {
- out += '\nValues:\n' + values;
- }
- if (atrules === '' && selectors === '' && props === '' && values === '') {
- out += '\nAwesome! Your browsers don\'t require any vendor prefixes.' + '\nNow you can remove Autoprefixer from build steps.';
- }
- return out;
- };
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