refactor to avoid needing global "inc" helper

Author: bantic

addon/package.json

@@ -72,7 +72,6 @@
       "./components/json-viewer.js": "./dist/_app_/components/json-viewer.js",
       "./components/simple-value.js": "./dist/_app_/components/simple-value.js",
       "./components/value-viewer.js": "./dist/_app_/components/value-viewer.js",
-      "./helpers/inc.js": "./dist/_app_/helpers/inc.js",
       "./helpers/is-last.js": "./dist/_app_/helpers/is-last.js"
     }
   },

addon/src/components/entry-viewer.hbs

@@ -26,7 +26,7 @@
   <ValueViewer
     @value={{@value}}
     @showSummary={{this.isNotExpanded}}
-    @depth={{inc @depth}}
+    @depth={{this.incrementedDepth}}
     @displayOptions={{@displayOptions}}
     @path={{@path}}
   />

addon/src/components/entry-viewer.js

@@ -46,6 +46,10 @@ export default class EntryViewer extends Component {
     return !isPrimitive(this.args.value);
   }
 
+  get incrementedDepth() {
+    return this.args.depth + 1;
+  }
+
   @action
   toggleExpanded() {
     if (!this.isToggleable) {