import type { ColumnType } from 'kysely';
import type * as Db from '../Db.js';
import type * as db_Schema from '../Schema.js';
/** Columns of the `reward_credits` table. */
export type Table = Omit<db_Schema.RewardCredit, 'chainId'> & {
    /** Bigint chain id, read as a string from pg and written as a number. */
    chainId: ColumnType<string, number, number>;
};
/** A stored manual reward credit. */
export type Record = db_Schema.RewardCredit;
/**
 * Records one credit and adds it to the recipient's pending rewards atomically.
 * A repeated `(recipient, reference)` is a no-op, so a batch can be replayed safely.
 */
export declare function apply(db: Db.Db, options: apply.Options): Promise<apply.Result>;
export declare namespace apply {
    /** One credit to record. */
    type Options = {
        /** Base-asset reward units to add. */
        assets: bigint;
        /** Chain containing the vault. */
        chainId: number;
        /** Registered recipient with a stored `reward_accounts` row. */
        recipient: string;
        /** Batch reference; the same reference never credits a recipient twice. */
        reference: string;
        /** EarnVault address. */
        vaultAddress: string;
    };
    /** Whether this call recorded the credit or found it already applied. */
    type Result = {
        credited: boolean;
    };
}
/** Lists one campaign's credits, optionally for one reference. */
export declare function list(db: Db.Db, options: list.Options): Promise<Record[]>;
export declare namespace list {
    /** Campaign identity and optional batch filter. */
    type Options = {
        /** Chain containing the vault. */
        chainId: number;
        /** Batch reference to filter by. */
        reference?: string | undefined;
        /** EarnVault address. */
        vaultAddress: string;
    };
}
/** Thrown when a credit targets a recipient without a stored reward account. */
export declare class MissingAccountError extends Error {
    name: string;
    constructor(recipient: string);
}
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