Adds use strict. Fixes canjs/canjs#4217

Austin Sanders · phillipskevin · commit 6b1e7a3a8bdd · 2018-07-03T17:11:56.000-05:00
diff --git a/build.js b/build.js
@@ -1,3 +1,4 @@
+"use strict";
 var stealTools = require("steal-tools");
 
 stealTools.export({

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+"use strict";`
`1`	`2`	`var stealTools = require("steal-tools");`
`2`	`3`
`3`	`4`	`stealTools.export({`