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# isExportableSigner

<Warning>
  **You are viewing docs for the previous version of the Wallets SDK.** We recommend upgrading to V1.
  See the [updated version of this page](/sdk-reference/wallets/typescript/functions/isExportableSignerAdapter) or the [V1 migration guide](/wallets/guides/migrate-to-v1).
</Warning>

> **isExportableSigner**(`signer`): `signer is ExportableSigner`

Defined in: [packages/wallets/src/signers/types.ts:154](https://github.com/Crossmint/crossmint-sdk/blob/main/packages/wallets/src/signers/types.ts#L154)

## Parameters

| Parameter | Type                             |
| --------- | -------------------------------- |
| `signer`  | [`Signer`](../interfaces/Signer) |

## Returns

`signer is ExportableSigner`