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build/node_modules/postcss-merge-longhand/dist/lib/decl/boxBase.js

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+'use strict';
+
+exports.__esModule = true;
+
+var _stylehacks = require('stylehacks');
+
+var _canMerge = require('../canMerge');
+
+var _canMerge2 = _interopRequireDefault(_canMerge);
+
+var _getDecls = require('../getDecls');
+
+var _getDecls2 = _interopRequireDefault(_getDecls);
+
+var _minifyTrbl = require('../minifyTrbl');
+
+var _minifyTrbl2 = _interopRequireDefault(_minifyTrbl);
+
+var _parseTrbl = require('../parseTrbl');
+
+var _parseTrbl2 = _interopRequireDefault(_parseTrbl);
+
+var _insertCloned = require('../insertCloned');
+
+var _insertCloned2 = _interopRequireDefault(_insertCloned);
+
+var _mergeRules = require('../mergeRules');
+
+var _mergeRules2 = _interopRequireDefault(_mergeRules);
+
+var _mergeValues = require('../mergeValues');
+
+var _mergeValues2 = _interopRequireDefault(_mergeValues);
+
+var _remove = require('../remove');
+
+var _remove2 = _interopRequireDefault(_remove);
+
+var _trbl = require('../trbl');
+
+var _trbl2 = _interopRequireDefault(_trbl);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+exports.default = function (prop) {
+    var properties = _trbl2.default.map(function (direction) {
+        return prop + '-' + direction;
+    });
+
+    var cleanup = function cleanup(rule) {
+        var decls = (0, _getDecls2.default)(rule, [prop].concat(properties));
+
+        var _loop = function _loop() {
+            var lastNode = decls[decls.length - 1];
+
+            // remove properties of lower precedence
+            var lesser = decls.filter(function (node) {
+                return !(0, _stylehacks.detect)(lastNode) && !(0, _stylehacks.detect)(node) && node !== lastNode && node.important === lastNode.important && lastNode.prop === prop && node.prop !== lastNode.prop;
+            });
+
+            lesser.forEach(_remove2.default);
+            decls = decls.filter(function (node) {
+                return !~lesser.indexOf(node);
+            });
+
+            // get duplicate properties
+            var duplicates = decls.filter(function (node) {
+                return !(0, _stylehacks.detect)(lastNode) && !(0, _stylehacks.detect)(node) && node !== lastNode && node.important === lastNode.important && node.prop === lastNode.prop;
+            });
+
+            duplicates.forEach(_remove2.default);
+            decls = decls.filter(function (node) {
+                return node !== lastNode && !~duplicates.indexOf(node);
+            });
+        };
+
+        while (decls.length) {
+            _loop();
+        }
+    };
+
+    var processor = {
+        explode: function explode(rule) {
+            rule.walkDecls(prop, function (decl) {
+                if (~decl.value.indexOf('inherit')) {
+                    return;
+                }
+                if ((0, _stylehacks.detect)(decl)) {
+                    return;
+                }
+                var values = (0, _parseTrbl2.default)(decl.value);
+                _trbl2.default.forEach(function (direction, index) {
+                    (0, _insertCloned2.default)(decl.parent, decl, {
+                        prop: properties[index],
+                        value: values[index]
+                    });
+                });
+                decl.remove();
+            });
+        },
+        merge: function merge(rule) {
+            (0, _mergeRules2.default)(rule, properties, function (rules, lastNode) {
+                if (_canMerge2.default.apply(undefined, rules) && !rules.some(_stylehacks.detect)) {
+                    (0, _insertCloned2.default)(lastNode.parent, lastNode, {
+                        prop: prop,
+                        value: (0, _minifyTrbl2.default)(_mergeValues2.default.apply(undefined, rules))
+                    });
+                    rules.forEach(_remove2.default);
+                    return true;
+                }
+            });
+            cleanup(rule);
+        }
+    };
+
+    return processor;
+};
+
+module.exports = exports['default'];