Add @typescript-eslint/no-unsafe-declaration-merging rule

https://typescript-eslint.io/rules/no-unsafe-declaration-merging

Author: sindresorhus

index.js

@@ -520,6 +520,7 @@ module.exports = {
 
 		'@typescript-eslint/no-unsafe-assignment': 'error',
 		'@typescript-eslint/no-unsafe-call': 'error',
+		'@typescript-eslint/no-unsafe-declaration-merging': 'error',
 
 		// Disabled until TypeScrpt supports the `node:` protocol.
 		// '@typescript-eslint/no-unsafe-member-access': 'error',

package.json

@@ -44,15 +44,15 @@
 		"simple"
 	],
 	"devDependencies": {
-		"@typescript-eslint/eslint-plugin": "^5.31.0",
-		"@typescript-eslint/parser": "^5.31.0",
+		"@typescript-eslint/eslint-plugin": "^5.41.0",
+		"@typescript-eslint/parser": "^5.41.0",
 		"ava": "^2.4.0",
 		"eslint": "^7.8.1",
 		"typescript": ">=4.4"
 	},
 	"peerDependencies": {
-		"@typescript-eslint/eslint-plugin": ">=5.31.0",
-		"@typescript-eslint/parser": ">=5.31.0",
+		"@typescript-eslint/eslint-plugin": ">=5.41.0",
+		"@typescript-eslint/parser": ">=5.41.0",
 		"eslint": ">=8.0.0",
 		"typescript": ">=4.4"
 	}