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• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=4.7.4&sourceType=module&code=JYWwDg9gTgLgBDAnmApnA3nA0ixcC+cAZlBCHAORQoCGAxjBQNwBQLAJinQDY3XEBXAHYNgEIXAAiXaDRjQAFGFKpYiAHI0QKAPwAuOAGcYUYEIDmASgMAFPlpQwUUaXVnyorFigAekWHCcRDQC3PA8NIaGcAAqKMYYbHBwkYgigiIKLMnJAAKu7oqWcGD2IAY4iNlwxejVydQwAlASpVBarMn4bN1AA&eslintrc=N4KABGBECmAeAu0B2ATAzpAXGA2uCUADgDYCuA5gJZKYAC8AnodGgMYBOlh8AtC8dXgB6dtFYB7ALaTkKaCkj4AugBp8kQgEN2aaOyxR6TFhy69+goVp17IaiBu272AeW6VxSDNlAEi7cQArMXgDSAA6IXg2TwAzSnJwwLRPRQgAX3siMiovAzw-SCNmNk5uPjQBJFDlLMh2UmIWA18CIsYS03KLaqEJL0o0RGqeDugeSklCcXZo-PxCgHdtJDsFgla-B0JRWNtsSDGJqZm59Yz1pXx0kHSgA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEk8sAJgK4YVTolHoAeekANOBqRkJWKgCGedAwCyjFhzZ5MTdIJrt4yPABF0cTFNiZZ6PBIZSJy1eqG0eiLMnjoiF1PsPHMZSipqQgC+IMFAA

Repro Code

import type { Key } from 'react';

declare function Decorator( propertyName?: string ): ParameterDecorator;

export default class Test {
	
	async func(
		@Decorator() param: Key
	) {
		return param;
	}
	
}

ESLint Config

{
	"parser"       : "@typescript-eslint/parser",
	"parserOptions": {
		"project": "./tsconfig.json"
	},
	"plugins"      : [ "@typescript-eslint" ],
	"rules"        : {
		"@typescript-eslint/consistent-type-imports": [ "warn", { "prefer": "type-imports" } ]
	}
}

tsconfig

{
	"compilerOptions": {
		"module"                : "esnext",
		"isolatedModules"       : true,
		"emitDecoratorMetadata" : true,
		"experimentalDecorators": true
	}
}

Expected Result

No errors showing for both the decorator and the type import

Actual Result

if you use import type, you get
ESLint: Type import "Key" is used by decorator metadata.(@typescript-eslint/consistent-type-imports)
while if you use just import, you get
TS1272: A type referenced in a decorated signature must be imported with 'import type' or a namespace import when 'isolatedModules' and 'emitDecoratorMetadata' are enabled.
Not sure if there's a better way to do this since isolatedModules must be set

Additional Info

This doesn't need complex setup, literally any type import will throw an error for this so I'm not sure if this needs reproduction repository

Versions