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build/node_modules/svgo/plugins/mergePaths.js

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+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = true;
+
+exports.description = 'merges multiple paths in one if possible';
+
+exports.params = {
+    collapseRepeated: true,
+    leadingZero: true,
+    negativeExtraSpace: true
+};
+
+var path2js = require('./_path.js').path2js,
+    js2path = require('./_path.js').js2path,
+    intersects = require('./_path.js').intersects;
+
+/**
+ * Merge multiple Paths into one.
+ *
+ * @param {Object} item current iteration item
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author Kir Belevich, Lev Solntsev
+ */
+exports.fn = function(item, params) {
+
+    if (!item.isElem() || item.isEmpty()) return;
+
+    var prevContentItem = null,
+        prevContentItemKeys = null;
+
+    item.content = item.content.filter(function(contentItem) {
+
+        if (prevContentItem &&
+            prevContentItem.isElem('path') &&
+            prevContentItem.isEmpty() &&
+            prevContentItem.hasAttr('d') &&
+            contentItem.isElem('path') &&
+            contentItem.isEmpty() &&
+            contentItem.hasAttr('d')
+        ) {
+
+            if (!prevContentItemKeys) {
+                prevContentItemKeys = Object.keys(prevContentItem.attrs);
+            }
+
+            var contentItemAttrs = Object.keys(contentItem.attrs),
+                equalData = prevContentItemKeys.length == contentItemAttrs.length &&
+                    contentItemAttrs.every(function(key) {
+                        return key == 'd' ||
+                            prevContentItem.hasAttr(key) &&
+                            prevContentItem.attr(key).value == contentItem.attr(key).value;
+                    }),
+                prevPathJS = path2js(prevContentItem),
+                curPathJS = path2js(contentItem);
+
+            if (equalData && !intersects(prevPathJS, curPathJS)) {
+                js2path(prevContentItem, prevPathJS.concat(curPathJS), params);
+                return false;
+            }
+        }
+
+        prevContentItem = contentItem;
+        prevContentItemKeys = null;
+        return true;
+
+    });
+
+};