null handling for color contrast

Author: chikara1608

lib/checks/color/color-contrast-evaluate.js

@@ -82,6 +82,7 @@ export default function colorContrastEvaluate(node, options, virtualNode) {
   }
 
   const bgNodes = [];
+  axe._cache.set('ruleId', 'axe-color-contrast');
   const bgColor = getBackgroundColor(node, bgNodes, shadowOutlineEmMax);
   const fgColor = getForegroundColor(node, false, bgColor, options);
 

lib/commons/dom/get-rect-stack.js

@@ -1,5 +1,6 @@
 import visuallySort from './visually-sort';
 import { getRectCenter } from '../math';
+import cache from '../../core/base/cache';
 
 // Additional props isCoordsPassed, x, y for a11y-engine-domforge
 export function getRectStack(
@@ -41,7 +42,12 @@ export function getRectStack(
   });
 
   const gridContainer = grid.container;
-  if (gridContainer) {
+  //adding just if color contrast is being run then only then the extra added condition should run
+  if (
+    gridContainer &&
+    (!(cache.get('ruleId') && cache.get('ruleId') === 'axe-color-contrast') ||
+      gridContainer._grid)
+  ) {
     stack = getRectStack(
       gridContainer._grid,
       gridContainer.boundingClientRect,