fix: resolve missing types for the cryptoRuntime const

src/index.ts

@@ -95,6 +95,7 @@ export type {
   CompactJWSHeaderParameters,
   JWTHeaderParameters,
   JSONWebKeySet,
+  CryptoRuntime,
 } from './types.d'
 
-export { default as cryptoRuntime } from './runtime/runtime.js'
+export { default as cryptoRuntime } from './util/runtime.js'

src/runtime/browser/runtime.ts

@@ -1,3 +1 @@
-import { CryptoRuntime } from '../../types.d'
-
-export default 'WebCryptoAPI' as CryptoRuntime
+export default 'WebCryptoAPI'

src/runtime/node/runtime.ts

@@ -1,3 +1 @@
-import { CryptoRuntime } from '../../types.d'
-
-export default 'node:crypto' as CryptoRuntime
+export default 'node:crypto'

src/util/runtime.ts

@@ -0,0 +1,3 @@
+import value from '../runtime/runtime.js'
+import type { CryptoRuntime } from '../types.d'
+export default value as CryptoRuntime