import { JWTPayload } from 'jose';
import { Credential, ServiceAccountCredential } from '../credential.js';
export interface CryptoSigner {
    sign(payload: JWTPayload): Promise<string>;
    getAccountId(): Promise<string>;
}
export declare function createEmulatorToken(payload: JWTPayload): string;
export declare class EmulatorSigner implements CryptoSigner {
    private readonly tenantId?;
    constructor(tenantId?: string | undefined);
    sign(payload: JWTPayload): Promise<string>;
    getAccountId(): Promise<string>;
}
export declare class ServiceAccountSigner implements CryptoSigner {
    private readonly credential;
    private readonly tenantId?;
    constructor(credential: ServiceAccountCredential, tenantId?: string | undefined);
    sign(payload: JWTPayload): Promise<string>;
    getAccountId(): Promise<string>;
}
export declare class IAMSigner implements CryptoSigner {
    algorithm: "RS256";
    private credential;
    private tenantId?;
    private serviceAccountId?;
    constructor(credential: Credential, tenantId?: string, serviceAccountId?: string);
    sign(payload: JWTPayload): Promise<string>;
    getAccountId(): Promise<string>;
}