//#region extensions/crypto/src/services/builder-code.d.ts
/**
 * Base Builder Code (ERC-8021) — transaction attribution for base.dev analytics.
 *
 * Every transaction on Base sent through OpenClawnch includes a data suffix that
 * attributes the transaction to our builder code. This:
 * 1. Tracks on-chain usage on base.dev
 * 2. Qualifies for Base ecosystem rewards
 * 3. Shows up in app leaderboards
 *
 * The suffix is appended to the `data` field of every sendTransaction call.
 * For native ETH transfers (no data), the suffix becomes the entire data field.
 * Smart contracts ignore trailing calldata — zero impact on execution.
 *
 * @see https://docs.base.org/base-chain/builder-codes/builder-codes
 * @see ERC-8021: https://eip.tools/eip/8021
 */
/** OpenClawnch's registered Base Builder Code. */
declare const BUILDER_CODE = "bc_z92vaimh";
/**
 * Pre-computed ERC-8021 data suffix for our builder code.
 *
 * Format: [1 byte: code length] [N bytes: UTF-8 code] [0x00] [8021 repeated 8 times]
 *
 * Encoding breakdown for 'bc_z92vaimh':
 *   0b                         = length 11
 *   62635f7a39327661696d68     = 'bc_z92vaimh' UTF-8
 *   00                         = separator
 *   80218021802180218021802180218021 = ERC-8021 magic (8 × 0x8021)
 */
declare const DATA_SUFFIX: "0x0b62635f7a39327661696d680080218021802180218021802180218021";
/**
 * Append the ERC-8021 builder code suffix to transaction data.
 *
 * - If data is empty/undefined (native ETH transfer), the suffix becomes the data.
 * - If data exists (contract call), the suffix is appended to the end.
 * - Only applies to Base chain transactions.
 *
 * @param data - Existing transaction data (hex string or undefined)
 * @param chainId - The chain this transaction targets
 * @returns The data with suffix appended, or original data if not Base
 */
declare function appendBuilderCode(data: string | undefined, chainId: number | undefined): string | undefined;
/**
 * Check if a transaction's data field already contains our builder code suffix.
 */
declare function hasBuilderCode(data: string | undefined): boolean;
/**
 * Wrap a viem wallet client to automatically append the builder code suffix
 * to all sendTransaction calls on Base.
 *
 * This is the main integration point. Applied once at wallet client creation
 * in walletconnect-service.ts.
 *
 * The wrapper intercepts the `request` method on the transport, catches
 * `eth_sendTransaction` calls, and appends the suffix to the data field.
 */
declare function wrapWithBuilderCode(walletClient: any, chainId?: number): any;
//#endregion
export { BUILDER_CODE, DATA_SUFFIX, appendBuilderCode, hasBuilderCode, wrapWithBuilderCode };
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