import { Command as $Command } from "@smithy/core/client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { GlueClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../GlueClient";
import type { GetSchemaVersionsDiffInput, GetSchemaVersionsDiffResponse } from "../models/models_2";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link GetSchemaVersionsDiffCommand}.
 */
export interface GetSchemaVersionsDiffCommandInput extends GetSchemaVersionsDiffInput {
}
/**
 * @public
 *
 * The output of {@link GetSchemaVersionsDiffCommand}.
 */
export interface GetSchemaVersionsDiffCommandOutput extends GetSchemaVersionsDiffResponse, __MetadataBearer {
}
declare const GetSchemaVersionsDiffCommand_base: {
    new (input: GetSchemaVersionsDiffCommandInput): import("@smithy/core/client").CommandImpl<GetSchemaVersionsDiffCommandInput, GetSchemaVersionsDiffCommandOutput, GlueClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: GetSchemaVersionsDiffCommandInput): import("@smithy/core/client").CommandImpl<GetSchemaVersionsDiffCommandInput, GetSchemaVersionsDiffCommandOutput, GlueClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): {
        [x: string]: unknown;
    };
};
/**
 * <p>Fetches the schema version difference in the specified difference type between two stored schema versions in the Schema Registry.</p>
 *          <p>This API allows you to compare two schema versions between two schema definitions under the same schema.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { GlueClient, GetSchemaVersionsDiffCommand } from "@aws-sdk/client-glue"; // ES Modules import
 * // const { GlueClient, GetSchemaVersionsDiffCommand } = require("@aws-sdk/client-glue"); // CommonJS import
 * // import type { GlueClientConfig } from "@aws-sdk/client-glue";
 * const config = {}; // type is GlueClientConfig
 * const client = new GlueClient(config);
 * const input = { // GetSchemaVersionsDiffInput
 *   SchemaId: { // SchemaId
 *     SchemaArn: "STRING_VALUE",
 *     SchemaName: "STRING_VALUE",
 *     RegistryName: "STRING_VALUE",
 *   },
 *   FirstSchemaVersionNumber: { // SchemaVersionNumber
 *     LatestVersion: true || false,
 *     VersionNumber: Number("long"),
 *   },
 *   SecondSchemaVersionNumber: {
 *     LatestVersion: true || false,
 *     VersionNumber: Number("long"),
 *   },
 *   SchemaDiffType: "SYNTAX_DIFF", // required
 * };
 * const command = new GetSchemaVersionsDiffCommand(input);
 * const response = await client.send(command);
 * // { // GetSchemaVersionsDiffResponse
 * //   Diff: "STRING_VALUE",
 * // };
 *
 * ```
 *
 * @param GetSchemaVersionsDiffCommandInput - {@link GetSchemaVersionsDiffCommandInput}
 * @returns {@link GetSchemaVersionsDiffCommandOutput}
 * @see {@link GetSchemaVersionsDiffCommandInput} for command's `input` shape.
 * @see {@link GetSchemaVersionsDiffCommandOutput} for command's `response` shape.
 * @see {@link GlueClientResolvedConfig | config} for GlueClient's `config` shape.
 *
 * @throws {@link AccessDeniedException} (client fault)
 *  <p>Access to a resource was denied.</p>
 *
 * @throws {@link EntityNotFoundException} (client fault)
 *  <p>A specified entity does not exist</p>
 *
 * @throws {@link InternalServiceException} (server fault)
 *  <p>An internal service error occurred.</p>
 *
 * @throws {@link InvalidInputException} (client fault)
 *  <p>The input provided was not valid.</p>
 *
 * @throws {@link GlueServiceException}
 * <p>Base exception class for all service exceptions from Glue service.</p>
 *
 *
 * @public
 */
export declare class GetSchemaVersionsDiffCommand extends GetSchemaVersionsDiffCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: GetSchemaVersionsDiffInput;
            output: GetSchemaVersionsDiffResponse;
        };
        sdk: {
            input: GetSchemaVersionsDiffCommandInput;
            output: GetSchemaVersionsDiffCommandOutput;
        };
    };
}