flow like the river

VISUALIZACION/node_modules/csso/lib/clean/WhiteSpace.js

@@ -0,0 +1,30 @@
+var { isNodeChildrenList } = require('./utils');
+
+function isSafeOperator(node) {
+    return node.type === 'Operator' && node.value !== '+' && node.value !== '-';
+}
+
+module.exports = function cleanWhitespace(node, item, list) {
+    // remove when first or last item in sequence
+    if (item.next === null || item.prev === null) {
+        list.remove(item);
+        return;
+    }
+
+    // white space in stylesheet or block children
+    if (isNodeChildrenList(this.stylesheet, list) ||
+        isNodeChildrenList(this.block, list)) {
+        list.remove(item);
+        return;
+    }
+
+    if (item.next.data.type === 'WhiteSpace') {
+        list.remove(item);
+        return;
+    }
+
+    if (isSafeOperator(item.prev.data) || isSafeOperator(item.next.data)) {
+        list.remove(item);
+        return;
+    }
+};