Rename ReporterScope.SPRITE to TARGET & add JSDoc

src/extension-support/reporter-scope.js

@@ -1,6 +1,18 @@
+/**
+ * Indicate the scope for a reporter's value.
+ * @enum {string}
+ */
 const ReporterScope = {
+    /**
+     * This reporter's value is global and does not depend on context.
+     */
     GLOBAL: 'global',
-    SPRITE: 'sprite'
+
+    /**
+     * This reporter's value is specific to a particular target/sprite.
+     * Another target may have a different value or may not even have a value.
+     */
+    TARGET: 'target'
 };
 
 module.exports = ReporterScope;