Fix stmt value being the raw value (babel#557) (babel#558)

src/plugins/estree.js

@@ -128,6 +128,19 @@ export default function (instance) {
     };
   });
 
+  instance.extend("stmtToDirective", function (inner) {
+    return function (stmt) {
+      const directive = inner.call(this, stmt);
+      const value = stmt.expression.value;
+
+      // Reset value to the actual value as in estree mode we want
+      // the stmt to have the real value and not the raw value
+      directive.value.value = value;
+
+      return directive;
+    };
+  });
+
   instance.extend("parseBlockBody", function (inner) {
     return function (node, ...args) {
       inner.call(this, node, ...args);

test/fixtures/estree/directives/raw/expected.json

@@ -56,11 +56,11 @@
               "column": 15
             }
           },
-          "value": "use\\x20strict",
+          "value": "use strict",
           "raw": "\"use\\x20strict\""
         },
         "directive": "use\\x20strict"
       }
     ]
   }
-}
+}