esutils - npm Package Compare versions

Comparing version 1.1.2 to 1.1.3

lib/ast.js

@@ -112,2 +112,28 @@ /*
 
+    function isProblematicIfStatement(node) {
+        var current;
+
+        if (node.type !== 'IfStatement') {
+            return false;
+        }
+        if (node.alternate == null) {
+            return false;
+        }
+        if (node.consequent.type === 'BlockStatement') {
+            return false;
+        }
+
+        current = node.consequent;
+        do {
+            if (current.type === 'IfStatement') {
+                if (!current.alternate)  {
+                    return true;
+                }
+            }
+            current = trailingStatement(current);
+        } while (current);
+
+        return false;
+    }
+
     module.exports = {
@@ -118,2 +144,3 @@ isExpression: isExpression,
         isSourceElement: isSourceElement,
+        isProblematicIfStatement: isProblematicIfStatement,
 
@@ -120,0 +147,0 @@ trailingStatement: trailingStatement

package.json

@@ -6,3 +6,3 @@ {
   "main": "lib/utils.js",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "engines": {
@@ -9,0 +9,0 @@ "node": ">=0.10.0"

README.md

@@ -38,2 +38,21 @@ ### esutils [![Build Status](https://secure.travis-ci.org/Constellation/esutils.svg)](http://travis-ci.org/Constellation/esutils)
 
+#### ast.isProblematicIfStatement(node)
+
+Returns true if `node` is a problematic IfStatement. If `node` is a problematic `IfStatement`, `node` cannot be represented as an one on one JavaScript code.
+```js
+{
+    type: 'IfStatement',
+    consequent: {
+        type: 'WithStatement',
+        body: {
+            type: 'IfStatement',
+            consequent: {type: 'EmptyStatement'}
+        }
+    },
+    alternate: {type: 'EmptyStatement'}
+}
+```
+The above node cannot be represented as a JavaScript code, since the top level `else` alternate belongs to an inner `IfStatement`.
+
+
 ### code
@@ -40,0 +59,0 @@

No alert changes

Improved metrics

Total package byte prevSize

32974

increased by3.98%

Lines of code

385

increased by6.35%

Number of lines in readme file

170

increased by12.58%

No dependency changes