fix pathFilter for alt browser field

Author: mvayngrib

index.js

@@ -180,17 +180,17 @@ function build_resolve_opts(opts, base) {
     	if(mappedPath) {
     		return mappedPath;
     	}
-    	if(!info.browser) {
+
+        var replacements = info[browser];
+    	if(!replacements) {
     		return;
     	}
 
-    	if(typeof info.browser) {
-    		mappedPath = info.browser[relativePath];
-    		if(!mappedPath && (relativePath.lastIndexOf(".js") === relativePath.length-3) ) {
-    			mappedPath = info.browser[relativePath+".js"];
-    		}
-    		return mappedPath;
-    	}
+		mappedPath = replacements[relativePath];
+		if(!mappedPath && (relativePath.lastIndexOf(".js") === relativePath.length-3) ) {
+			mappedPath = replacements[relativePath+".js"];
+		}
+		return mappedPath;
     };
 
     return opts;

test/fixtures/node_modules/alt-browser-field/chromeapp-direct.js

@@ -250,3 +250,16 @@ test('alt-browser field', function(done) {
         done();
     });
 });
+
+test('alt-browser deep module reference mapping', function(done) {
+    resolve('alt-browser-field/direct', {
+        basedir: __dirname + '/fixtures',
+        package: { main: 'fixtures' },
+        browser: 'chromeapp'
+    }, function(err, path, pkg) {
+        assert.ifError(err);
+        assert.equal(path, require.resolve('./fixtures/node_modules/alt-browser-field/chromeapp-direct'));
+        assert.equal(pkg.main, './chromeapp.js');
+        done();
+    });
+});