update magic-string

package.json

@@ -48,7 +48,7 @@
     "eslint": "^1.7.1",
     "estree-walker": "^0.2.0",
     "istanbul": "^0.4.0",
-    "magic-string": "^0.10.0",
+    "magic-string": "^0.10.1",
     "mocha": "^2.3.3",
     "remap-istanbul": "^0.4.0",
     "rollup": "^0.20.2",

test/function/vars-not-removed/_config.js

@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'does not erroneously remove var/let/const keywords (#390)'
+};

test/function/vars-not-removed/bar.js

@@ -0,0 +1,3 @@
+var a = 2, b = 3;
+
+assert.equal( a + b, 5 );

test/function/vars-not-removed/foo.js

@@ -0,0 +1,3 @@
+var a = 1, b = 2;
+
+assert.equal( a + b, 3 );

test/function/vars-not-removed/main.js

@@ -0,0 +1,2 @@
+import './foo.js';
+import './bar.js';