/** Legacy internal carrier; new results keep metadata in a WeakMap. */
export declare const exactActionSpendSymbol: unique symbol;
/** Retained for compatibility with older local wallet implementations. */
export interface ExactActionSpendCarrier {
    [exactActionSpendSymbol]?: number;
}
export declare function setExactActionSpend(result: object, amount: number): void;
export declare function getExactActionSpend(result: object): number | undefined;
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