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import crypto, { isCryptoKey } from './webcrypto.ts'import type { JWKExportFunction } from './interfaces.d.ts'import type { JWK } from '../types.d.ts'import invalidKeyInput from '../lib/invalid_key_input.ts'import { encode as base64url } from './base64url.ts'import { types } from './is_key_like.ts'
const keyToJWK: JWKExportFunction = async (key: unknown): Promise<JWK> => {  if (key instanceof Uint8Array) {    return {      kty: 'oct',      k: base64url(key),    }  }  if (!isCryptoKey(key)) {    throw new TypeError(invalidKeyInput(key, ...types, 'Uint8Array'))  }  if (!key.extractable) {    throw new TypeError('non-extractable CryptoKey cannot be exported as a JWK')  }  const { ext, key_ops, alg, use, ...jwk } = await crypto.subtle.exportKey('jwk', key)
  return <JWK>jwk}export default keyToJWK