Upgrade css-tree from alpha25 to alpha.28

API changed walkFoo(ast, fun) to walk(ast,{visit: 'Rule',enter: fun)
csstree.translate renamed to csstree.generate
csstree.generate throws an error on invalid style where translate silently ignored it - update style processing to catch and ignore instead
Updated tests - csstree now omits more whitespace

lib/css-tools.js

@@ -15,7 +15,7 @@ var csstree     = require('css-tree'),
 function flattenToSelectors(cssAst) {
     var selectors = [];
 
-    csstree.walkRules(cssAst, function(node) {
+    csstree.walk(cssAst, {visit: 'Rule', enter: function(node) {
         if (node.type !== 'Rule') {
             return;
         }
@@ -43,7 +43,7 @@ function flattenToSelectors(cssAst) {
 
             selectors.push(selector);
         });
-    });
+    }});
 
     return selectors;
 }
@@ -65,7 +65,7 @@ function filterByMqs(selectors, useMqs) {
         var mqStr = mqName;
         if (selector.atrule.expression &&
             selector.atrule.expression.children.first().type === 'MediaQueryList') {
-            var mqExpr = csstree.translate(selector.atrule.expression);
+            var mqExpr = csstree.generate(selector.atrule.expression);
             mqStr = [mqName, mqExpr].join(' ');
         }
 
@@ -82,7 +82,7 @@ function filterByMqs(selectors, useMqs) {
  */
 function filterByPseudos(selectors, usePseudos) {
     return selectors.filter(function(selector) {
-        var pseudoSelectorsStr = csstree.translate({
+        var pseudoSelectorsStr = csstree.generate({
             type: 'Selector',
             children: new List().fromArray(selector.pseudos.map(function(pseudo) {
                 return pseudo.item.data;
@@ -165,7 +165,7 @@ function sortSelectors(selectors) {
  */
 function csstreeToStyleDeclaration(declaration) {
     var propertyName = declaration.property,
-        propertyValue = csstree.translate(declaration.value),
+        propertyValue = csstree.generate(declaration.value),
         propertyPriority = (declaration.important ? 'important' : '');
     return {
         name: propertyName,

lib/svgo/css-style-declaration.js

@@ -127,8 +127,14 @@ CSSStyleDeclaration.prototype._loadCssText = function() {
 
     var self = this;
     declarations.children.each(function(declaration) {
+        try {
           var styleDeclaration = csstools.csstreeToStyleDeclaration(declaration);
           self.setProperty(styleDeclaration.name, styleDeclaration.value, styleDeclaration.priority);
+        } catch(styleError) {
+            if(styleError.message !== 'Unknown node type: undefined') {
+                self.parseError = styleError;
+            }
+        }
     });
 };
 

package.json

@@ -53,7 +53,7 @@
     "colors": "~1.1.2",
     "css-select": "~1.3.0-rc0",
     "css-select-base-adapter": "~0.1.0",
-    "css-tree": "1.0.0-alpha25",
+    "css-tree": "1.0.0-alpha.28",
     "css-url-regex": "^1.1.0",
     "csso": "^3.5.0",
     "js-yaml": "~3.10.0",

plugins/inlineStyles.js

@@ -103,7 +103,7 @@ exports.fn = function(document, opts) {
 
     // match selectors
     for (selector of sortedSelectors) {
-        var selectorStr = csstree.translate(selector.item.data),
+        var selectorStr = csstree.generate(selector.item.data),
             selectedEls = null;
 
         try {
@@ -143,7 +143,7 @@ exports.fn = function(document, opts) {
             }
 
             // merge declarations
-            csstree.walkDeclarations(selector.rule, function(styleCsstreeDeclaration) {
+            csstree.walk(selector.rule, {visit: 'Declaration', enter: function(styleCsstreeDeclaration) {
 
                 // existing inline styles have higher priority
                 // no inline styles, external styles,                                    external styles used
@@ -155,7 +155,7 @@ exports.fn = function(document, opts) {
                     return;
                 }
                 selectedEl.style.setProperty(styleDeclaration.name, styleDeclaration.value, styleDeclaration.priority);
-            });
+            }});
         }
 
         if (opts.removeMatchedSelectors && selector.selectedEls !== null && selector.selectedEls.length > 0) {
@@ -202,7 +202,7 @@ exports.fn = function(document, opts) {
 
     // clean up now empty elements
     for (var style of styles) {
-        csstree.walkRules(style.cssAst, function(node, item, list) {
+        csstree.walk(style.cssAst, {visit: 'Rule', enter: function(node, item, list) {
             // clean up <style/> atrules without any rulesets left
             if (node.type === 'Atrule' &&
                 // only Atrules containing rulesets
@@ -217,7 +217,7 @@ exports.fn = function(document, opts) {
                 node.prelude.children.isEmpty()) {
                 list.remove(item);
             }
-        });
+        }});
 
 
         if (style.cssAst.children.isEmpty()) {
@@ -237,7 +237,7 @@ exports.fn = function(document, opts) {
 
 
         // update existing, left over <style>s
-        cssTools.setCssStr(style.styleEl, csstree.translate(style.cssAst));
+        cssTools.setCssStr(style.styleEl, csstree.generate(style.cssAst));
     }
 
 

plugins/prefixIds.js

@@ -194,7 +194,7 @@ exports.fn = function(node, opts, extra) {
         });
 
         // update <style>s
-        node.content[0].text = csstree.translate(cssAst);
+        node.content[0].text = csstree.generate(cssAst);
         return node;
     }