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386 lines
8.5 KiB
386 lines
8.5 KiB
"use strict";
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var postcss = require('postcss');
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var data = require('caniuse-lite').feature(require('caniuse-lite/data/features/css-featurequeries.js'));
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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 supported = [];
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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 =
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/*#__PURE__*/
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function () {
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function Supports(Prefixes, all) {
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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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var _proto = Supports.prototype;
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_proto.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.includes(i);
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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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;
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_proto.parse = function parse(str) {
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var parts = str.split(':');
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var prop = parts[0];
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var value = parts[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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;
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_proto.virtual = function virtual(str) {
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var _this$parse = this.parse(str),
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prop = _this$parse[0],
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value = _this$parse[1];
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var rule = postcss.parse('a{}').first;
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rule.append({
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prop: prop,
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value: value,
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raws: {
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before: ''
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}
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});
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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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;
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_proto.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 result = {
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warn: function warn() {
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return null;
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}
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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, result);
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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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;
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_proto.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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;
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_proto.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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;
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_proto.isProp = function isProp(node) {
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return 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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;
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_proto.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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;
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_proto.toRemove = function toRemove(str, all) {
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var _this$parse2 = this.parse(str),
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prop = _this$parse2[0],
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value = _this$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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;
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_proto.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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;
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_proto.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 !== '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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;
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_proto.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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;
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_proto.normalize = function normalize(nodes) {
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var _this2 = this;
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if (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].includes(':')) {
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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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;
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_proto.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 === '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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;
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_proto.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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;
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_proto.disabled = function disabled(node) {
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if (!this.all.options.grid) {
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if (node.prop === 'display' && node.value.includes('grid')) {
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return true;
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}
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if (node.prop.includes('grid') || 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.includes('flex')) {
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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.includes('flex') || other.includes(node.prop)) {
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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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