add definitions for rule to check for absolute imports from the src folder

src/Umbraco.Web.UI.Client/eslint-local-rules.cjs

@@ -64,5 +64,30 @@ module.exports = {
 			};
 
 		},
-	}
+	},
+
+	/** @type {import('eslint').Rule.RuleModule} */
+	'prefer-import-aliases': {
+		meta: {
+			type: 'suggestion',
+			docs: {
+				description: 'Ensures that the application does not rely on file system paths for imports. Instead, use import aliases or relative imports. This also solves a problem where GitHub fails on the test runner step.',
+				category: 'Best Practices',
+				recommended: true
+			},
+			schema: [],
+		},
+		create: function (context) {
+			return {
+				ImportDeclaration: function (node) {
+					if (node.source.value.startsWith('src/')) {
+						context.report({
+							node,
+							message: 'Prefer using import aliases or relative imports instead of absolute imports. Example: `import { MyComponent } from "src/components/MyComponent";` should be `import { MyComponent } from "@components/MyComponent";`'
+						});
+					}
+				},
+			};
+		}
+	},
 };