import { Principal } from "@dfinity/principal";
import { Signer } from "ethers";
import { BridgingPlan } from "../..";
import { type Config } from "../../config";
import type { Deployment, EvmChain, Token } from "../../types";
/**
 * Builder for creating EVM to ICP token bridging plans.
 *
 * Supports two bridging modes:
 * - Direct bridging via `build()` - requires user to connect wallet and sign transactions
 * - Forwarding via `forward()` - user sends tokens to a generated forwarding address
 *
 * @example
 * ```typescript
 * // Direct bridging
 * const plan = await new EvmToIcpBridgeBuilder("Base", "USDC")
 *   .receiver(icpPrincipal)
 *   .amountInUnits(1_500_000n) // 1.5 USDC
 *   .build(evmSigner);
 *
 * // Forwarding (no signer needed)
 * const plan = await new EvmToIcpBridgeBuilder("Base", "USDC")
 *   .receiver(icpPrincipal)
 *   .amountInUnits(1_500_000n)
 *   .forward();
 * ```
 */
export declare class EvmToIcpBridgeBuilder {
    private evmChain;
    private token;
    private _deployment;
    private evmAddress?;
    private evmAmountInUnits?;
    private evmAmountInTokens?;
    private icpAccount?;
    private config?;
    /**
     * @param evmChain Source EVM chain (e.g., "Base", "Arbitrum", "Ethereum")
     * @param token Token to bridge (e.g., "USDC", "ICP")
     */
    constructor(evmChain: EvmChain, token: Token);
    /**
     * Set target deployment network.
     * @param deployment Target network ("Mainnet", "Testnet", or "Local")
     */
    deployment(deployment: Deployment): EvmToIcpBridgeBuilder;
    /**
     * Set sender EVM address. Optional for direct bridging (inferred from signer).
     * @param evmAddress EVM address sending the tokens
     */
    sender(evmAddress: string): EvmToIcpBridgeBuilder;
    /**
     * Set amount to bridge in token's smallest units.
     * @param amount Amount in base units (e.g., 1_500_000n for 1.5 USDC)
     */
    amountInUnits(amount: bigint): EvmToIcpBridgeBuilder;
    /**
     * Set amount to bridge in human-readable token units.
     * @param amount Amount in token units (e.g., 1.5 for 1.5 USDC)
     */
    amountInTokens(amount: number): EvmToIcpBridgeBuilder;
    /**
     * Set ICP recipient account.
     * @param principal ICP principal receiving the tokens
     * @param subaccount Optional 32-byte subaccount
     */
    receiver(principal: Principal, subaccount?: Uint8Array): EvmToIcpBridgeBuilder;
    /**
     * Use custom configuration instead of defaults.
     * @param config Custom bridge configuration
     */
    withConfig(config: Config): EvmToIcpBridgeBuilder;
    /**
     * Build a direct bridging plan that requires wallet interaction.
     *
     * Creates a multi-step plan including: fee validation, EVM transaction approval/submission,
     * block confirmation, receipt validation, and ICP transfer completion.
     *
     * @param signer Ethereum signer to approve and submit transactions
     * @returns Executable bridging plan
     * @throws Error if required parameters (amount, receiver) are missing
     */
    build(signer: Signer): Promise<BridgingPlan>;
    /**
     * Build a forwarding-based bridging plan that doesn't require wallet connection.
     *
     * Creates a plan that generates a unique forwarding address where users can send tokens.
     * The plan includes: fee validation, address generation, payment notification, transaction
     * detection, block confirmation, receipt validation, and ICP transfer completion.
     *
     * @returns Executable bridging plan that provides a forwarding address
     * @throws Error if required parameters (amount, receiver) are missing
     */
    forward(): Promise<BridgingPlan>;
}