refactor compare ref usage

Author: zendive

README.md

@@ -17,6 +17,7 @@ comparisons with the help of dedicated console commands.
 - document, dom-elements and other non-serializable objects are filtered-out from the results
 - self recurring references displayed only once, the rest of occurrences are filtered-out
 - basic integration with search functionality within devtools
+  - if search query contains upper-case letter - the search will be case-sensitive
 
 ### Limitations and workarounds
 
@@ -48,13 +49,13 @@ console.diffPush(Date.now());
 console.diff(Date.now());
 ```
 
-- **console.diffLeft(left)** - update the old value
+- **console.diffLeft(left)** - update the old value only
 
 ```javascript
 console.diffLeft(Date.now());
 ```
 
-- **console.diffRight(right)** - update the new value
+- **console.diffRight(right)** - update the new value only
 
 ```javascript
 console.diffRight(Date.now());
@@ -82,7 +83,6 @@ with a single argument, that will shift objects from right to left, showing diff
   - reflects result of last compare request
   - listens on `jsdiff-devtools-to-panel-compare` requests
   - listens on `jsdiff-devtools-to-panel-search` and tries to find query in DOM
-    - if search query contains upper-case letter - the search will be case-sensitive
 
 ### Screenshot
 

manifest.json

@@ -3,7 +3,7 @@
   "description": "Compare in-memory objects and see the result inside devtools panel with a set of console.diff functions.",
   "version": "3.0.0",
   "manifest_version": 3,
-  "minimum_chrome_version": "64.0",
+  "minimum_chrome_version": "66.0",
   "devtools_page": "src/jsdiff-devtools.html",
   "icons": {
     "28": "src/img/panel-icon28.png",

src/js/bundle/jsdiff-panel.js

@@ -159,10 +159,11 @@ function $_restartLastUpdated() {
 }
 
 function $_onDiffRequest({ left, right, timestamp }: ICompareState) {
-  // console.log('$_onDiffRequest');
-  compare.value.left = left;
-  compare.value.right = right;
-  compare.value.timestamp = timestamp || Date.now();
+  compare.value = {
+    left,
+    right,
+    timestamp: timestamp || Date.now(),
+  };
 
   $_restartLastUpdated();
   postDiffRender(deltaEl.value);