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node_modules/postcss-merge-rules/dist/index.js

@@ -1,6 +1,8 @@
 'use strict';
 
-exports.__esModule = true;
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
 
 var _browserslist = require('browserslist');
 
@@ -14,9 +16,9 @@ var _vendors = require('vendors');
 
 var _vendors2 = _interopRequireDefault(_vendors);
 
-var _clone = require('./lib/clone');
+var _cssnanoUtilSameParent = require('cssnano-util-same-parent');
 
-var _clone2 = _interopRequireDefault(_clone);
+var _cssnanoUtilSameParent2 = _interopRequireDefault(_cssnanoUtilSameParent);
 
 var _ensureCompatibility = require('./lib/ensureCompatibility');
 
@@ -24,91 +26,57 @@ var _ensureCompatibility2 = _interopRequireDefault(_ensureCompatibility);
 
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
 
-var prefixes = _vendors2.default.map(function (v) {
-    return '-' + v + '-';
-});
+const prefixes = _vendors2.default.map(v => `-${v}-`);
 
 function intersect(a, b, not) {
-    return a.filter(function (c) {
-        var index = ~b.indexOf(c);
+    return a.filter(c => {
+        const index = ~b.indexOf(c);
         return not ? !index : index;
     });
 }
 
-var different = function different(a, b) {
-    return intersect(a, b, true).concat(intersect(b, a, true));
-};
-var filterPrefixes = function filterPrefixes(selector) {
-    return intersect(prefixes, selector);
-};
+// Internet Explorer use :-ms-input-placeholder.
+// Microsoft Edge use ::-ms-input-placeholder.
+const findMsInputPlaceholder = selector => ~selector.search(/-ms-input-placeholder/i);
+const different = (a, b) => intersect(a, b, true).concat(intersect(b, a, true));
+const filterPrefixes = selector => intersect(prefixes, selector);
 
 function sameVendor(selectorsA, selectorsB) {
-    var same = function same(selectors) {
-        return selectors.map(filterPrefixes).join();
-    };
-    return same(selectorsA) === same(selectorsB);
+    let same = selectors => selectors.map(filterPrefixes).join();
+    let findMsVendor = selectors => selectors.find(findMsInputPlaceholder);
+    return same(selectorsA) === same(selectorsB) && !(findMsVendor(selectorsA) && findMsVendor(selectorsB));
 }
 
-var noVendor = function noVendor(selector) {
-    return !filterPrefixes(selector).length;
-};
-
-function sameParent(ruleA, ruleB) {
-    var hasParent = ruleA.parent && ruleB.parent;
-    var sameType = hasParent && ruleA.parent.type === ruleB.parent.type;
-    // If an at rule, ensure that the parameters are the same
-    if (hasParent && ruleA.parent.type !== 'root' && ruleB.parent.type !== 'root') {
-        sameType = sameType && ruleA.parent.params === ruleB.parent.params && ruleA.parent.name === ruleB.parent.name;
-    }
-    return hasParent ? sameType : true;
-}
+const noVendor = selector => !filterPrefixes(selector).length;
 
 function canMerge(ruleA, ruleB, browsers, compatibilityCache) {
-    var a = ruleA.selectors;
-    var b = ruleB.selectors;
+    const a = ruleA.selectors;
+    const b = ruleB.selectors;
 
-    var selectors = a.concat(b);
+    const selectors = a.concat(b);
 
     if (!(0, _ensureCompatibility2.default)(selectors, browsers, compatibilityCache)) {
         return false;
     }
 
-    var parent = sameParent(ruleA, ruleB);
-    var name = ruleA.parent.name;
-
+    const parent = (0, _cssnanoUtilSameParent2.default)(ruleA, ruleB);
+    const { name } = ruleA.parent;
     if (parent && name && ~name.indexOf('keyframes')) {
         return false;
     }
     return parent && (selectors.every(noVendor) || sameVendor(a, b));
 }
 
-var getDecls = function getDecls(rule) {
-    return rule.nodes ? rule.nodes.map(String) : [];
-};
-var joinSelectors = function joinSelectors() {
-    for (var _len = arguments.length, rules = Array(_len), _key = 0; _key < _len; _key++) {
-        rules[_key] = arguments[_key];
-    }
+const getDecls = rule => rule.nodes && rule.nodes.map(String);
+const joinSelectors = (...rules) => rules.map(s => s.selector).join();
 
-    return rules.map(function (s) {
-        return s.selector;
-    }).join();
-};
-
-function ruleLength() {
-    for (var _len2 = arguments.length, rules = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
-        rules[_key2] = arguments[_key2];
-    }
-
-    return rules.map(function (r) {
-        return r.nodes.length ? String(r) : '';
-    }).join('').length;
+function ruleLength(...rules) {
+    return rules.map(r => r.nodes.length ? String(r) : '').join('').length;
 }
 
 function splitProp(prop) {
-    var parts = prop.split('-');
-    var base = void 0,
-        rest = void 0;
+    const parts = prop.split('-');
+    let base, rest;
     // Treat vendor prefixed properties as if they were unprefixed;
     // moving them when combined with non-prefixed properties can
     // cause issues. e.g. moving -webkit-background-clip when there
@@ -127,45 +95,38 @@ function isConflictingProp(propA, propB) {
     if (propA === propB) {
         return true;
     }
-    var a = splitProp(propA);
-    var b = splitProp(propB);
+    const a = splitProp(propA);
+    const b = splitProp(propB);
     return a[0] === b[0] && a[1].length !== b[1].length;
 }
 
 function hasConflicts(declProp, notMoved) {
-    return notMoved.some(function (prop) {
-        return isConflictingProp(prop, declProp);
-    });
+    return notMoved.some(prop => isConflictingProp(prop, declProp));
 }
 
 function partialMerge(first, second) {
-    var _this = this;
-
-    var intersection = intersect(getDecls(first), getDecls(second));
+    let intersection = intersect(getDecls(first), getDecls(second));
     if (!intersection.length) {
         return second;
     }
-    var nextRule = second.next();
+    let nextRule = second.next();
     if (nextRule && nextRule.type === 'rule' && canMerge(second, nextRule)) {
-        var nextIntersection = intersect(getDecls(second), getDecls(nextRule));
+        let nextIntersection = intersect(getDecls(second), getDecls(nextRule));
         if (nextIntersection.length > intersection.length) {
             first = second;second = nextRule;intersection = nextIntersection;
         }
     }
-    var recievingBlock = (0, _clone2.default)(second);
+    const recievingBlock = second.clone();
     recievingBlock.selector = joinSelectors(first, second);
     recievingBlock.nodes = [];
-    second.parent.insertBefore(second, recievingBlock);
-    var difference = different(getDecls(first), getDecls(second));
-    var filterConflicts = function filterConflicts(decls, intersectn) {
-        var willNotMove = [];
-        return decls.reduce(function (willMove, decl) {
-            var intersects = ~intersectn.indexOf(decl);
-            var prop = decl.split(':')[0];
-            var base = prop.split('-')[0];
-            var canMove = difference.every(function (d) {
-                return d.split(':')[0] !== base;
-            });
+    const difference = different(getDecls(first), getDecls(second));
+    const filterConflicts = (decls, intersectn) => {
+        let willNotMove = [];
+        return decls.reduce((willMove, decl) => {
+            let intersects = ~intersectn.indexOf(decl);
+            let prop = decl.split(':')[0];
+            let base = prop.split('-')[0];
+            let canMove = difference.every(d => d.split(':')[0] !== base);
             if (intersects && canMove && !hasConflicts(prop, willNotMove)) {
                 willMove.push(decl);
             } else {
@@ -174,30 +135,41 @@ function partialMerge(first, second) {
             return willMove;
         }, []);
     };
+    const containsAllDeclaration = intersectionList => {
+        return intersectionList.some(declaration => {
+            return declaration.split(':')[0].toLowerCase() === 'all';
+        });
+    };
     intersection = filterConflicts(getDecls(first).reverse(), intersection);
     intersection = filterConflicts(getDecls(second), intersection);
-    var firstClone = (0, _clone2.default)(first);
-    var secondClone = (0, _clone2.default)(second);
-    var moveDecl = function moveDecl(callback) {
-        return function (decl) {
+
+    // Rules with "all" declarations must be on top
+    if (containsAllDeclaration(intersection)) {
+        second.parent.insertBefore(first, recievingBlock);
+    } else {
+        second.parent.insertBefore(second, recievingBlock);
+    }
+
+    const firstClone = first.clone();
+    const secondClone = second.clone();
+    const moveDecl = callback => {
+        return decl => {
             if (~intersection.indexOf(String(decl))) {
-                callback.call(_this, decl);
+                callback.call(this, decl);
             }
         };
     };
-    firstClone.walkDecls(moveDecl(function (decl) {
+    firstClone.walkDecls(moveDecl(decl => {
         decl.remove();
         recievingBlock.append(decl);
     }));
-    secondClone.walkDecls(moveDecl(function (decl) {
-        return decl.remove();
-    }));
-    var merged = ruleLength(firstClone, recievingBlock, secondClone);
-    var original = ruleLength(first, second);
+    secondClone.walkDecls(moveDecl(decl => decl.remove()));
+    const merged = ruleLength(firstClone, recievingBlock, secondClone);
+    const original = ruleLength(first, second);
     if (merged < original) {
         first.replaceWith(firstClone);
         second.replaceWith(secondClone);
-        [firstClone, recievingBlock, secondClone].forEach(function (r) {
+        [firstClone, recievingBlock, secondClone].forEach(r => {
             if (!r.nodes.length) {
                 r.remove();
             }
@@ -213,7 +185,7 @@ function partialMerge(first, second) {
 }
 
 function selectorMerger(browsers, compatibilityCache) {
-    var cache = null;
+    let cache = null;
     return function (rule) {
         // Prime the cache with the first rule, or alternately ensure that it is
         // safe to merge both declarations before continuing
@@ -238,12 +210,12 @@ function selectorMerger(browsers, compatibilityCache) {
         // Merge when both selectors are exactly equal
         // e.g. a { color: blue } a { font-weight: bold }
         if (cache.selector === rule.selector) {
-            var cached = getDecls(cache);
-            rule.walk(function (decl) {
+            const cached = getDecls(cache);
+            rule.walk(decl => {
                 if (~cached.indexOf(String(decl))) {
                     return decl.remove();
                 }
-                decl.moveTo(cache);
+                cache.append(decl);
             });
             rule.remove();
             return;
@@ -254,16 +226,15 @@ function selectorMerger(browsers, compatibilityCache) {
     };
 }
 
-exports.default = _postcss2.default.plugin('postcss-merge-rules', function () {
-    return function (css, result) {
-        var opts = result.opts;
-
-        var browsers = (0, _browserslist2.default)(null, {
-            stats: opts && opts.stats,
-            path: opts && opts.from,
-            env: opts && opts.env
+exports.default = _postcss2.default.plugin('postcss-merge-rules', () => {
+    return (css, result) => {
+        const resultOpts = result.opts || {};
+        const browsers = (0, _browserslist2.default)(null, {
+            stats: resultOpts.stats,
+            path: __dirname,
+            env: resultOpts.env
         });
-        var compatibilityCache = {};
+        const compatibilityCache = {};
         css.walkRules(selectorMerger(browsers, compatibilityCache));
     };
 });