/**
 * Bitfield flags describing the cryptographic operations an
 * {@link ECPairSigner} can perform.
 *
 * Combine with bitwise OR (`|`) and test with bitwise AND (`&`).
 *
 * @example
 * ```ts
 * const caps = signer.capabilities;
 * if (caps & SignerCapability.SchnorrSign) {
 *     // Schnorr signing is available
 * }
 * ```
 */
export declare const SignerCapability: {
    /** Can produce ECDSA signatures (requires a private key). */
    readonly EcdsaSign: number;
    /** Can verify ECDSA signatures. */
    readonly EcdsaVerify: number;
    /** Can produce BIP-340 Schnorr signatures (requires a private key and backend support). */
    readonly SchnorrSign: number;
    /** Can verify BIP-340 Schnorr signatures (requires backend support). */
    readonly SchnorrVerify: number;
    /** Can export the raw private key bytes. */
    readonly PrivateKeyExport: number;
    /** Can derive a tweaked child key via Taproot-style tweaking. */
    readonly PublicKeyTweak: number;
    /** Supports BIP-32 hierarchical deterministic derivation. */
    readonly HdDerivation: number;
};
/**
 * Union of all valid {@link SignerCapability} flag values.
 */
export type SignerCapability = (typeof SignerCapability)[keyof typeof SignerCapability];
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