AC-14314::[AdobeDocs Approval] Dev doc update after upgrading eslint version to 9

cod62627 · cod62627 · commit 45f1c3ed2c08 · 2025-04-01T15:59:04.000+05:30
diff --git a/src/pages/coding-standards/js.md b/src/pages/coding-standards/js.md
@@ -384,4 +384,13 @@ This document outlines the necessary changes to implement custom Eslint rules.
     }
   }
 }
-```
+```
+### Applying custom rules
+
+To add or modify custom rules, update `eslint.config.mjs` in the `magento-coding-standard` repository.
+With latest version, configuration has changed from eslint to flat config. We use this https://eslint.org/docs/latest/use/configure/migration-guide as a 
+reference to migrate the eslint.
+
+This reference doc provides the command and other information in detail. such as to convert old `.eslintrc` file with new config
+run below command
+`npx  @eslint/migrate-config .eslintrc`

Original file line number	Diff line number	Diff line change
`@@ -384,4 +384,13 @@ This document outlines the necessary changes to implement custom Eslint rules.`
`384`	`384`	`}`
`385`	`385`	`}`
`386`	`386`	`}`
`387`		-```
	`387`	+```
	`388`	`+### Applying custom rules`
	`389`	`+`
	`390`	+To add or modify custom rules, update `eslint.config.mjs` in the `magento-coding-standard` repository.
	`391`	`+With latest version, configuration has changed from eslint to flat config. We use this https://eslint.org/docs/latest/use/configure/migration-guide as a`
	`392`	`+reference to migrate the eslint.`
	`393`	`+`
	`394`	+This reference doc provides the command and other information in detail. such as to convert old `.eslintrc` file with new config
	`395`	`+run below command`
	`396`	+`npx @eslint/migrate-config .eslintrc`