380 lines
10 KiB
JavaScript
380 lines
10 KiB
JavaScript
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'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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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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var Browsers = require('./browsers');
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var brackets = require('./brackets');
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var Value = require('./value');
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var utils = require('./utils');
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var postcss = require('postcss');
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var supported = [];
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var data = require('caniuse-lite').feature(require('caniuse-lite/data/features/css-featurequeries.js'));
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for (var browser in data.stats) {
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var versions = data.stats[browser];
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for (var version in versions) {
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var support = versions[version];
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if (/y/.test(support)) {
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supported.push(browser + ' ' + version);
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}
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}
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}
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var Supports = function () {
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function Supports(Prefixes, all) {
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_classCallCheck(this, Supports);
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this.Prefixes = Prefixes;
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this.all = all;
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}
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/**
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* Return prefixer only with @supports supported browsers
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*/
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Supports.prototype.prefixer = function prefixer() {
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if (this.prefixerCache) {
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return this.prefixerCache;
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}
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var filtered = this.all.browsers.selected.filter(function (i) {
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return supported.indexOf(i) !== -1;
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});
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var browsers = new Browsers(this.all.browsers.data, filtered, this.all.options);
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this.prefixerCache = new this.Prefixes(this.all.data, browsers, this.all.options);
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return this.prefixerCache;
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};
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/**
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* Parse string into declaration property and value
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*/
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Supports.prototype.parse = function parse(str) {
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var _str$split = str.split(':'),
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prop = _str$split[0],
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value = _str$split[1];
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if (!value) value = '';
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return [prop.trim(), value.trim()];
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};
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/**
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* Create virtual rule to process it by prefixer
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*/
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Supports.prototype.virtual = function virtual(str) {
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var _parse = this.parse(str),
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prop = _parse[0],
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value = _parse[1];
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var rule = postcss.parse('a{}').first;
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rule.append({ prop: prop, value: value, raws: { before: '' } });
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return rule;
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};
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/**
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* Return array of Declaration with all necessary prefixes
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*/
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Supports.prototype.prefixed = function prefixed(str) {
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var rule = this.virtual(str);
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if (this.disabled(rule.first)) {
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return rule.nodes;
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}
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var prefixer = this.prefixer().add[rule.first.prop];
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prefixer && prefixer.process && prefixer.process(rule.first);
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for (var _iterator = rule.nodes, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
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var _ref;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref = _i.value;
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}
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var decl = _ref;
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for (var _iterator2 = this.prefixer().values('add', rule.first.prop), _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
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var _ref2;
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if (_isArray2) {
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if (_i2 >= _iterator2.length) break;
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_ref2 = _iterator2[_i2++];
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} else {
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_i2 = _iterator2.next();
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if (_i2.done) break;
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_ref2 = _i2.value;
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}
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var value = _ref2;
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value.process(decl);
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}
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Value.save(this.all, decl);
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}
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return rule.nodes;
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};
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/**
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* Return true if brackets node is "not" word
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*/
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Supports.prototype.isNot = function isNot(node) {
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return typeof node === 'string' && /not\s*/i.test(node);
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};
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/**
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* Return true if brackets node is "or" word
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*/
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Supports.prototype.isOr = function isOr(node) {
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return typeof node === 'string' && /\s*or\s*/i.test(node);
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};
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/**
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* Return true if brackets node is (prop: value)
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*/
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Supports.prototype.isProp = function isProp(node) {
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return (typeof node === 'undefined' ? 'undefined' : _typeof(node)) === 'object' && node.length === 1 && typeof node[0] === 'string';
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};
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/**
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* Return true if prefixed property has no unprefixed
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*/
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Supports.prototype.isHack = function isHack(all, unprefixed) {
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var check = new RegExp('(\\(|\\s)' + utils.escapeRegexp(unprefixed) + ':');
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return !check.test(all);
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};
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/**
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* Return true if we need to remove node
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*/
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Supports.prototype.toRemove = function toRemove(str, all) {
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var _parse2 = this.parse(str),
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prop = _parse2[0],
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value = _parse2[1];
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var unprefixed = this.all.unprefixed(prop);
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var cleaner = this.all.cleaner();
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if (cleaner.remove[prop] && cleaner.remove[prop].remove && !this.isHack(all, unprefixed)) {
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return true;
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}
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for (var _iterator3 = cleaner.values('remove', unprefixed), _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
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var _ref3;
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if (_isArray3) {
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if (_i3 >= _iterator3.length) break;
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_ref3 = _iterator3[_i3++];
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} else {
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_i3 = _iterator3.next();
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if (_i3.done) break;
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_ref3 = _i3.value;
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}
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var checker = _ref3;
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if (checker.check(value)) {
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return true;
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}
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}
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return false;
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};
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/**
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* Remove all unnecessary prefixes
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*/
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Supports.prototype.remove = function remove(nodes, all) {
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var i = 0;
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while (i < nodes.length) {
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if (!this.isNot(nodes[i - 1]) && this.isProp(nodes[i]) && this.isOr(nodes[i + 1])) {
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if (this.toRemove(nodes[i][0], all)) {
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nodes.splice(i, 2);
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continue;
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}
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i += 2;
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continue;
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}
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if (_typeof(nodes[i]) === 'object') {
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nodes[i] = this.remove(nodes[i], all);
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}
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i += 1;
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}
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return nodes;
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};
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/**
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* Clean brackets with one child
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*/
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Supports.prototype.cleanBrackets = function cleanBrackets(nodes) {
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var _this = this;
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return nodes.map(function (i) {
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if ((typeof i === 'undefined' ? 'undefined' : _typeof(i)) !== 'object') {
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return i;
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}
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if (i.length === 1 && _typeof(i[0]) === 'object') {
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return _this.cleanBrackets(i[0]);
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}
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return _this.cleanBrackets(i);
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});
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};
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/**
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* Add " or " between properties and convert it to brackets format
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*/
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Supports.prototype.convert = function convert(progress) {
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var result = [''];
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for (var _iterator4 = progress, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator]();;) {
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var _ref4;
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if (_isArray4) {
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if (_i4 >= _iterator4.length) break;
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_ref4 = _iterator4[_i4++];
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} else {
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_i4 = _iterator4.next();
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if (_i4.done) break;
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_ref4 = _i4.value;
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}
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var i = _ref4;
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result.push([i.prop + ': ' + i.value]);
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result.push(' or ');
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}
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result[result.length - 1] = '';
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return result;
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};
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/**
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* Compress value functions into a string nodes
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*/
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Supports.prototype.normalize = function normalize(nodes) {
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var _this2 = this;
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if ((typeof nodes === 'undefined' ? 'undefined' : _typeof(nodes)) !== 'object') {
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return nodes;
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}
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nodes = nodes.filter(function (i) {
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return i !== '';
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});
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if (typeof nodes[0] === 'string' && nodes[0].indexOf(':') !== -1) {
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return [brackets.stringify(nodes)];
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}
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return nodes.map(function (i) {
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return _this2.normalize(i);
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});
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};
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/**
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* Add prefixes
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*/
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Supports.prototype.add = function add(nodes, all) {
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var _this3 = this;
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return nodes.map(function (i) {
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if (_this3.isProp(i)) {
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var prefixed = _this3.prefixed(i[0]);
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if (prefixed.length > 1) {
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return _this3.convert(prefixed);
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}
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return i;
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}
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if ((typeof i === 'undefined' ? 'undefined' : _typeof(i)) === 'object') {
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return _this3.add(i, all);
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}
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return i;
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});
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};
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/**
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* Add prefixed declaration
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*/
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Supports.prototype.process = function process(rule) {
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var ast = brackets.parse(rule.params);
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ast = this.normalize(ast);
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ast = this.remove(ast, rule.params);
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ast = this.add(ast, rule.params);
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ast = this.cleanBrackets(ast);
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rule.params = brackets.stringify(ast);
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};
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/**
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* Check global options
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*/
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Supports.prototype.disabled = function disabled(node) {
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if (!this.all.options.grid) {
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if (node.prop === 'display' && node.value.indexOf('grid') !== -1) {
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return true;
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}
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if (node.prop.indexOf('grid') !== -1 || node.prop === 'justify-items') {
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return true;
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}
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}
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if (this.all.options.flexbox === false) {
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if (node.prop === 'display' && node.value.indexOf('flex') !== -1) {
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return true;
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}
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var other = ['order', 'justify-content', 'align-items', 'align-content'];
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if (node.prop.indexOf('flex') !== -1 || other.indexOf(node.prop) !== -1) {
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return true;
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}
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}
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return false;
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};
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return Supports;
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}();
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module.exports = Supports;
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