import type { Attribute } from '../../Sheet/Attributes';
import type { TranslatableName } from '../../Translator';
import { Modifier } from '../Modifier';
import type { PerLevelModifierInterface } from './PerLevelModifierInterface';
export type PerLevelModifierParams = {
    source: TranslatableName;
    value: number;
    includeFirstLevel?: boolean;
    attributeBonuses?: Set<Attribute>;
    frequency?: number;
};
export declare class PerLevelModifier extends Modifier implements PerLevelModifierInterface {
    readonly includeFirstLevel: boolean;
    readonly frequency: number;
    constructor(params: PerLevelModifierParams);
    getPerLevelValue(): number;
}