import { ITemplateVariable } from '@novu/shared';
export declare class VerifyPayloadService {
    checkRequired(variables: ITemplateVariable[], payload: Record<string, unknown>): string[];
    fillDefaults(variables: ITemplateVariable[]): Record<string, unknown>;
    private setNestedKey;
    isSystemVariable(variableName: string): boolean;
    verifyPayload(variables: ITemplateVariable[], payload: Record<string, unknown>): Record<string, unknown>;
}
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