import { Command as $Command } from "@smithy/smithy-client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { DatabaseMigrationServiceClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../DatabaseMigrationServiceClient";
import type { DescribeEngineVersionsMessage, DescribeEngineVersionsResponse } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link DescribeEngineVersionsCommand}.
 */
export interface DescribeEngineVersionsCommandInput extends DescribeEngineVersionsMessage {
}
/**
 * @public
 *
 * The output of {@link DescribeEngineVersionsCommand}.
 */
export interface DescribeEngineVersionsCommandOutput extends DescribeEngineVersionsResponse, __MetadataBearer {
}
declare const DescribeEngineVersionsCommand_base: {
    new (input: DescribeEngineVersionsCommandInput): import("@smithy/smithy-client").CommandImpl<DescribeEngineVersionsCommandInput, DescribeEngineVersionsCommandOutput, DatabaseMigrationServiceClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (...[input]: [] | [DescribeEngineVersionsCommandInput]): import("@smithy/smithy-client").CommandImpl<DescribeEngineVersionsCommandInput, DescribeEngineVersionsCommandOutput, DatabaseMigrationServiceClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/middleware-endpoint").EndpointParameterInstructions;
};
/**
 * <p>Returns information about the replication instance versions used in the project.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { DatabaseMigrationServiceClient, DescribeEngineVersionsCommand } from "@aws-sdk/client-database-migration-service"; // ES Modules import
 * // const { DatabaseMigrationServiceClient, DescribeEngineVersionsCommand } = require("@aws-sdk/client-database-migration-service"); // CommonJS import
 * // import type { DatabaseMigrationServiceClientConfig } from "@aws-sdk/client-database-migration-service";
 * const config = {}; // type is DatabaseMigrationServiceClientConfig
 * const client = new DatabaseMigrationServiceClient(config);
 * const input = { // DescribeEngineVersionsMessage
 *   MaxRecords: Number("int"),
 *   Marker: "STRING_VALUE",
 * };
 * const command = new DescribeEngineVersionsCommand(input);
 * const response = await client.send(command);
 * // { // DescribeEngineVersionsResponse
 * //   EngineVersions: [ // EngineVersionList
 * //     { // EngineVersion
 * //       Version: "STRING_VALUE",
 * //       Lifecycle: "STRING_VALUE",
 * //       ReleaseStatus: "beta" || "prod",
 * //       LaunchDate: new Date("TIMESTAMP"),
 * //       AutoUpgradeDate: new Date("TIMESTAMP"),
 * //       DeprecationDate: new Date("TIMESTAMP"),
 * //       ForceUpgradeDate: new Date("TIMESTAMP"),
 * //       AvailableUpgrades: [ // AvailableUpgradesList
 * //         "STRING_VALUE",
 * //       ],
 * //     },
 * //   ],
 * //   Marker: "STRING_VALUE",
 * // };
 *
 * ```
 *
 * @param DescribeEngineVersionsCommandInput - {@link DescribeEngineVersionsCommandInput}
 * @returns {@link DescribeEngineVersionsCommandOutput}
 * @see {@link DescribeEngineVersionsCommandInput} for command's `input` shape.
 * @see {@link DescribeEngineVersionsCommandOutput} for command's `response` shape.
 * @see {@link DatabaseMigrationServiceClientResolvedConfig | config} for DatabaseMigrationServiceClient's `config` shape.
 *
 * @throws {@link DatabaseMigrationServiceServiceException}
 * <p>Base exception class for all service exceptions from DatabaseMigrationService service.</p>
 *
 *
 * @public
 */
export declare class DescribeEngineVersionsCommand extends DescribeEngineVersionsCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DescribeEngineVersionsMessage;
            output: DescribeEngineVersionsResponse;
        };
        sdk: {
            input: DescribeEngineVersionsCommandInput;
            output: DescribeEngineVersionsCommandOutput;
        };
    };
}