ESLint fixes

Author: JamesMessinger

test/fixtures/files/script1.js

@@ -1,3 +1,4 @@
+/* eslint strict:off */
 (function () {
   'use strict';
 

test/fixtures/files/script2.js

@@ -1,7 +1,4 @@
-(function () {
-  'use strict';
+'use strict';
 
-  // This file should not get updated when the --grep option is used,
-  // because version 3.2.1 and v8.9.10 don't match the old version number
-
-}());
+// This file should not get updated when the --grep option is used,
+// because version 3.2.1 and v8.9.10 don't match the old version number

test/fixtures/mocks/git

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+'use strict';
 
 /**
  *

test/fixtures/mocks/npm

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+'use strict';
 
 /**
  *