How to use the libsodium-wrappers.crypto_secretbox_easy function in libsodium-wrappers

encrypt(key, message)
	{
		var nonce = _sodium.randombytes_buf(_sodium.crypto_secretbox_NONCEBYTES);
		try
		{
			return _sodium.to_hex(_concat(Uint8Array, nonce, _sodium.crypto_secretbox_easy(message, nonce, _sodium.from_hex(key))));
		}
		catch(e)
		{
			this._adapter.log.warn(e.message);
			return false;
		}
	}

var encrypt = function(data) {
    return getValuesFromMap(sodium.crypto_secretbox_easy(data, encryptionNonce, encryptionKey));
  };

export const encrypt = (msg: Data, nonce: Data, key: Key) =>
  sodium.crypto_secretbox_easy(msg, nonce, key)