116 lines
3.8 KiB
JavaScript
116 lines
3.8 KiB
JavaScript
'use strict';
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exports.__esModule = true;
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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 ? "symbol" : typeof obj; };
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var _has = require('has');
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var _has2 = _interopRequireDefault(_has);
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var _postcss = require('postcss');
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var _postcssValueParser = require('postcss-value-parser');
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var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function canonical(obj) {
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return function recurse(key) {
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if ((0, _has2.default)(obj, key) && obj[key] !== key) {
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return recurse(obj[key]);
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}
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return key;
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};
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}
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function sameParent(ruleA, ruleB) {
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var hasParent = ruleA.parent && ruleB.parent;
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var sameType = hasParent && ruleA.parent.type === ruleB.parent.type;
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// If an at rule, ensure that the parameters are the same
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if (hasParent && ruleA.parent.type !== 'root' && ruleB.parent.type !== 'root') {
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sameType = sameType && ruleA.parent.params === ruleB.parent.params && ruleA.parent.name === ruleB.parent.name;
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}
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return hasParent ? sameType : true;
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}
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function mergeAtRules(css, pairs) {
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pairs.forEach(function (pair) {
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pair.cache = [];
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pair.replacements = [];
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pair.decls = [];
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});
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var relevant = void 0;
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css.walk(function (node) {
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if (node.type === 'atrule') {
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relevant = pairs.filter(function (pair) {
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return pair.atrule.test(node.name);
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})[0];
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if (!relevant) {
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return;
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}
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if (relevant.cache.length < 1) {
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relevant.cache.push(node);
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return;
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} else {
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var _ret = function () {
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var toString = node.nodes.toString();
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relevant.cache.forEach(function (cached) {
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if (cached.name === node.name && sameParent(cached, node) && cached.nodes.toString() === toString) {
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cached.remove();
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relevant.replacements[cached.params] = node.params;
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}
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});
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relevant.cache.push(node);
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return {
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v: void 0
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};
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}();
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if ((typeof _ret === 'undefined' ? 'undefined' : _typeof(_ret)) === "object") return _ret.v;
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}
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}
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if (node.type === 'decl') {
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relevant = pairs.filter(function (pair) {
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return pair.decl.test(node.prop);
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})[0];
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if (!relevant) {
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return;
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}
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relevant.decls.push(node);
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}
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});
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pairs.forEach(function (pair) {
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var canon = canonical(pair.replacements);
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pair.decls.forEach(function (decl) {
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decl.value = (0, _postcssValueParser2.default)(decl.value).walk(function (node) {
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if (node.type === 'word') {
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node.value = canon(node.value);
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}
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if (node.type === 'space') {
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node.value = ' ';
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}
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if (node.type === 'div') {
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node.before = node.after = '';
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}
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}).toString();
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});
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});
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}
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exports.default = (0, _postcss.plugin)('postcss-merge-idents', function () {
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return function (css) {
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mergeAtRules(css, [{
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atrule: /keyframes/,
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decl: /animation/
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}, {
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atrule: /counter-style/,
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decl: /(list-style|system)/
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}]);
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};
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});
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module.exports = exports['default']; |