Merge pull request #1 from florianeckerstorfer/only-jpg-png

Only process .png, .jpg and .jpeg files

__tests__/index.spec.js

@@ -82,4 +82,17 @@ describe('remark-responsive-images', () => {
       done();
     });
   });
+
+  it('should not modify node if image gif', (done) => {
+    const input = '![My image](foo.gif)';
+
+    processor.process(input, (_, file) => {
+      const result = cheerio.load(String(file));
+      expect(result('figure').length).toBe(0);
+      expect(result('img').length).toBe(1);
+      expect(result('img').attr('src')).toBe('foo.gif');
+      expect(result('img').attr('alt')).toBe('My image');
+      done();
+    });
+  });
 });

src/index.js

@@ -16,7 +16,9 @@ function findMarkdownImageNodes(markdownAST) {
     (node, ancestors) => {
       const inLink = ancestors.some(findParentLinks);
 
-      markdownImageNodes.push({ node, inLink });
+      if (node.url.match(/\.(png|jpe?g)$/)) {
+        markdownImageNodes.push({ node, inLink });
+      }
     }
   );