refactor(webapi): is cryptokey check

src/runtime/browser/webcrypto.ts

@@ -1,14 +1,3 @@
 export default crypto
 
-export function isCryptoKey(key: unknown): key is CryptoKey {
-  try {
-    return (
-      key != null &&
-      typeof (<CryptoKey>key).extractable === 'boolean' &&
-      typeof (<CryptoKey>key).algorithm.name === 'string' &&
-      typeof (<CryptoKey>key).type === 'string'
-    )
-  } catch {
-    return false
-  }
-}
+export const isCryptoKey = (key: unknown): key is CryptoKey => key instanceof CryptoKey

src/runtime/node/webcrypto.ts

@@ -7,6 +7,6 @@ const webcrypto = <Crypto>crypto.webcrypto
 export default webcrypto
 
 export const isCryptoKey = util.types.isCryptoKey
-  ? (obj: unknown): obj is CryptoKey => util.types.isCryptoKey(obj)
+  ? (key: unknown): key is CryptoKey => util.types.isCryptoKey(key)
   : // @ts-expect-error
-    (obj: unknown): obj is CryptoKey => false
+    (key: unknown): key is CryptoKey => false