import * as cr from "aws-cdk-lib/custom-resources";
import type * as constructs from "constructs";
interface Props {
    parameterName: string;
    region: string;
    /**
     * Value that must be updated to check if the parameter has a new value.
     *
     * @default Date.now().toString()
     */
    nonce?: string;
}
/**
 * Get value of a SSM parameter dynamically during deployment
 * with support to read cross-region.
 */
export declare class SsmParameterReader extends cr.AwsCustomResource {
    constructor(scope: constructs.Construct, id: string, props: Props);
    getParameterValue(): string;
}
export {};