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node_modules/tailwindcss/lib/lib/resolveDefaultsAtRules.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    elementSelectorParser: function() {
+        return elementSelectorParser;
+    },
+    default: function() {
+        return resolveDefaultsAtRules;
+    }
+});
+const _postcss = /*#__PURE__*/ _interop_require_default(require("postcss"));
+const _postcssselectorparser = /*#__PURE__*/ _interop_require_default(require("postcss-selector-parser"));
+const _featureFlags = require("../featureFlags");
+function _interop_require_default(obj) {
+    return obj && obj.__esModule ? obj : {
+        default: obj
+    };
+}
+let getNode = {
+    id (node) {
+        return _postcssselectorparser.default.attribute({
+            attribute: "id",
+            operator: "=",
+            value: node.value,
+            quoteMark: '"'
+        });
+    }
+};
+function minimumImpactSelector(nodes) {
+    let rest = nodes.filter((node)=>{
+        // Keep non-pseudo nodes
+        if (node.type !== "pseudo") return true;
+        // Keep pseudo nodes that have subnodes
+        // E.g.: `:not()` contains subnodes inside the parentheses
+        if (node.nodes.length > 0) return true;
+        // Keep pseudo `elements`
+        // This implicitly means that we ignore pseudo `classes`
+        return node.value.startsWith("::") || [
+            ":before",
+            ":after",
+            ":first-line",
+            ":first-letter"
+        ].includes(node.value);
+    }).reverse();
+    let searchFor = new Set([
+        "tag",
+        "class",
+        "id",
+        "attribute"
+    ]);
+    let splitPointIdx = rest.findIndex((n)=>searchFor.has(n.type));
+    if (splitPointIdx === -1) return rest.reverse().join("").trim();
+    let node = rest[splitPointIdx];
+    let bestNode = getNode[node.type] ? getNode[node.type](node) : node;
+    rest = rest.slice(0, splitPointIdx);
+    let combinatorIdx = rest.findIndex((n)=>n.type === "combinator" && n.value === ">");
+    if (combinatorIdx !== -1) {
+        rest.splice(0, combinatorIdx);
+        rest.unshift(_postcssselectorparser.default.universal());
+    }
+    return [
+        bestNode,
+        ...rest.reverse()
+    ].join("").trim();
+}
+let elementSelectorParser = (0, _postcssselectorparser.default)((selectors)=>{
+    return selectors.map((s)=>{
+        let nodes = s.split((n)=>n.type === "combinator" && n.value === " ").pop();
+        return minimumImpactSelector(nodes);
+    });
+});
+let cache = new Map();
+function extractElementSelector(selector) {
+    if (!cache.has(selector)) {
+        cache.set(selector, elementSelectorParser.transformSync(selector));
+    }
+    return cache.get(selector);
+}
+function resolveDefaultsAtRules({ tailwindConfig  }) {
+    return (root)=>{
+        let variableNodeMap = new Map();
+        /** @type {Set<import('postcss').AtRule>} */ let universals = new Set();
+        root.walkAtRules("defaults", (rule)=>{
+            if (rule.nodes && rule.nodes.length > 0) {
+                universals.add(rule);
+                return;
+            }
+            let variable = rule.params;
+            if (!variableNodeMap.has(variable)) {
+                variableNodeMap.set(variable, new Set());
+            }
+            variableNodeMap.get(variable).add(rule.parent);
+            rule.remove();
+        });
+        if ((0, _featureFlags.flagEnabled)(tailwindConfig, "optimizeUniversalDefaults")) {
+            for (let universal of universals){
+                /** @type {Map<string, Set<string>>} */ let selectorGroups = new Map();
+                var _variableNodeMap_get;
+                let rules = (_variableNodeMap_get = variableNodeMap.get(universal.params)) !== null && _variableNodeMap_get !== void 0 ? _variableNodeMap_get : [];
+                for (let rule of rules){
+                    for (let selector of extractElementSelector(rule.selector)){
+                        // If selector contains a vendor prefix after a pseudo element or class,
+                        // we consider them separately because merging the declarations into
+                        // a single rule will cause browsers that do not understand the
+                        // vendor prefix to throw out the whole rule
+                        // Additionally if a selector contains `:has` we also consider
+                        // it separately because FF only recently gained support for it
+                        let selectorGroupName = selector.includes(":-") || selector.includes("::-") || selector.includes(":has") ? selector : "__DEFAULT__";
+                        var _selectorGroups_get;
+                        let selectors = (_selectorGroups_get = selectorGroups.get(selectorGroupName)) !== null && _selectorGroups_get !== void 0 ? _selectorGroups_get : new Set();
+                        selectorGroups.set(selectorGroupName, selectors);
+                        selectors.add(selector);
+                    }
+                }
+                if (selectorGroups.size === 0) {
+                    universal.remove();
+                    continue;
+                }
+                for (let [, selectors] of selectorGroups){
+                    let universalRule = _postcss.default.rule({
+                        source: universal.source
+                    });
+                    universalRule.selectors = [
+                        ...selectors
+                    ];
+                    universalRule.append(universal.nodes.map((node)=>node.clone()));
+                    universal.before(universalRule);
+                }
+                universal.remove();
+            }
+        } else if (universals.size) {
+            let universalRule = _postcss.default.rule({
+                selectors: [
+                    "*",
+                    "::before",
+                    "::after"
+                ]
+            });
+            for (let universal of universals){
+                universalRule.append(universal.nodes);
+                if (!universalRule.parent) {
+                    universal.before(universalRule);
+                }
+                if (!universalRule.source) {
+                    universalRule.source = universal.source;
+                }
+                universal.remove();
+            }
+            let backdropRule = universalRule.clone({
+                selectors: [
+                    "::backdrop"
+                ]
+            });
+            universalRule.after(backdropRule);
+        }
+    };
+}