import { Command as $Command } from "@smithy/smithy-client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { DynamoDBClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../DynamoDBClient";
import type { DeleteItemInput, DeleteItemOutput } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link DeleteItemCommand}.
 */
export interface DeleteItemCommandInput extends DeleteItemInput {
}
/**
 * @public
 *
 * The output of {@link DeleteItemCommand}.
 */
export interface DeleteItemCommandOutput extends DeleteItemOutput, __MetadataBearer {
}
declare const DeleteItemCommand_base: {
    new (input: DeleteItemCommandInput): import("@smithy/smithy-client").CommandImpl<DeleteItemCommandInput, DeleteItemCommandOutput, DynamoDBClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: DeleteItemCommandInput): import("@smithy/smithy-client").CommandImpl<DeleteItemCommandInput, DeleteItemCommandOutput, DynamoDBClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/middleware-endpoint").EndpointParameterInstructions;
};
/**
 * <p>Deletes a single item in a table by primary key. You can perform a conditional delete
 *             operation that deletes the item if it exists, or if it has an expected attribute
 *             value.</p>
 *          <p>In addition to deleting an item, you can also return the item's attribute values in
 *             the same operation, using the <code>ReturnValues</code> parameter.</p>
 *          <p>Unless you specify conditions, the <code>DeleteItem</code> is an idempotent operation;
 *             running it multiple times on the same item or attribute does <i>not</i>
 *             result in an error response.</p>
 *          <p>Conditional deletes are useful for deleting items only if specific conditions are met.
 *             If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not
 *             deleted.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { DynamoDBClient, DeleteItemCommand } from "@aws-sdk/client-dynamodb"; // ES Modules import
 * // const { DynamoDBClient, DeleteItemCommand } = require("@aws-sdk/client-dynamodb"); // CommonJS import
 * // import type { DynamoDBClientConfig } from "@aws-sdk/client-dynamodb";
 * const config = {}; // type is DynamoDBClientConfig
 * const client = new DynamoDBClient(config);
 * const input = { // DeleteItemInput
 *   TableName: "STRING_VALUE", // required
 *   Key: { // Key // required
 *     "<keys>": { // AttributeValue Union: only one key present
 *       S: "STRING_VALUE",
 *       N: "STRING_VALUE",
 *       B: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
 *       SS: [ // StringSetAttributeValue
 *         "STRING_VALUE",
 *       ],
 *       NS: [ // NumberSetAttributeValue
 *         "STRING_VALUE",
 *       ],
 *       BS: [ // BinarySetAttributeValue
 *         new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
 *       ],
 *       M: { // MapAttributeValue
 *         "<keys>": {//  Union: only one key present
 *           S: "STRING_VALUE",
 *           N: "STRING_VALUE",
 *           B: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
 *           SS: [
 *             "STRING_VALUE",
 *           ],
 *           NS: [
 *             "STRING_VALUE",
 *           ],
 *           BS: [
 *             new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
 *           ],
 *           M: {
 *             "<keys>": "<AttributeValue>",
 *           },
 *           L: [ // ListAttributeValue
 *             "<AttributeValue>",
 *           ],
 *           NULL: true || false,
 *           BOOL: true || false,
 *         },
 *       },
 *       L: [
 *         "<AttributeValue>",
 *       ],
 *       NULL: true || false,
 *       BOOL: true || false,
 *     },
 *   },
 *   Expected: { // ExpectedAttributeMap
 *     "<keys>": { // ExpectedAttributeValue
 *       Value: "<AttributeValue>",
 *       Exists: true || false,
 *       ComparisonOperator: "EQ" || "NE" || "IN" || "LE" || "LT" || "GE" || "GT" || "BETWEEN" || "NOT_NULL" || "NULL" || "CONTAINS" || "NOT_CONTAINS" || "BEGINS_WITH",
 *       AttributeValueList: [ // AttributeValueList
 *         "<AttributeValue>",
 *       ],
 *     },
 *   },
 *   ConditionalOperator: "AND" || "OR",
 *   ReturnValues: "NONE" || "ALL_OLD" || "UPDATED_OLD" || "ALL_NEW" || "UPDATED_NEW",
 *   ReturnConsumedCapacity: "INDEXES" || "TOTAL" || "NONE",
 *   ReturnItemCollectionMetrics: "SIZE" || "NONE",
 *   ConditionExpression: "STRING_VALUE",
 *   ExpressionAttributeNames: { // ExpressionAttributeNameMap
 *     "<keys>": "STRING_VALUE",
 *   },
 *   ExpressionAttributeValues: { // ExpressionAttributeValueMap
 *     "<keys>": "<AttributeValue>",
 *   },
 *   ReturnValuesOnConditionCheckFailure: "ALL_OLD" || "NONE",
 * };
 * const command = new DeleteItemCommand(input);
 * const response = await client.send(command);
 * // { // DeleteItemOutput
 * //   Attributes: { // AttributeMap
 * //     "<keys>": { // AttributeValue Union: only one key present
 * //       S: "STRING_VALUE",
 * //       N: "STRING_VALUE",
 * //       B: new Uint8Array(),
 * //       SS: [ // StringSetAttributeValue
 * //         "STRING_VALUE",
 * //       ],
 * //       NS: [ // NumberSetAttributeValue
 * //         "STRING_VALUE",
 * //       ],
 * //       BS: [ // BinarySetAttributeValue
 * //         new Uint8Array(),
 * //       ],
 * //       M: { // MapAttributeValue
 * //         "<keys>": {//  Union: only one key present
 * //           S: "STRING_VALUE",
 * //           N: "STRING_VALUE",
 * //           B: new Uint8Array(),
 * //           SS: [
 * //             "STRING_VALUE",
 * //           ],
 * //           NS: [
 * //             "STRING_VALUE",
 * //           ],
 * //           BS: [
 * //             new Uint8Array(),
 * //           ],
 * //           M: {
 * //             "<keys>": "<AttributeValue>",
 * //           },
 * //           L: [ // ListAttributeValue
 * //             "<AttributeValue>",
 * //           ],
 * //           NULL: true || false,
 * //           BOOL: true || false,
 * //         },
 * //       },
 * //       L: [
 * //         "<AttributeValue>",
 * //       ],
 * //       NULL: true || false,
 * //       BOOL: true || false,
 * //     },
 * //   },
 * //   ConsumedCapacity: { // ConsumedCapacity
 * //     TableName: "STRING_VALUE",
 * //     CapacityUnits: Number("double"),
 * //     ReadCapacityUnits: Number("double"),
 * //     WriteCapacityUnits: Number("double"),
 * //     Table: { // Capacity
 * //       ReadCapacityUnits: Number("double"),
 * //       WriteCapacityUnits: Number("double"),
 * //       CapacityUnits: Number("double"),
 * //     },
 * //     LocalSecondaryIndexes: { // SecondaryIndexesCapacityMap
 * //       "<keys>": {
 * //         ReadCapacityUnits: Number("double"),
 * //         WriteCapacityUnits: Number("double"),
 * //         CapacityUnits: Number("double"),
 * //       },
 * //     },
 * //     GlobalSecondaryIndexes: {
 * //       "<keys>": {
 * //         ReadCapacityUnits: Number("double"),
 * //         WriteCapacityUnits: Number("double"),
 * //         CapacityUnits: Number("double"),
 * //       },
 * //     },
 * //   },
 * //   ItemCollectionMetrics: { // ItemCollectionMetrics
 * //     ItemCollectionKey: { // ItemCollectionKeyAttributeMap
 * //       "<keys>": "<AttributeValue>",
 * //     },
 * //     SizeEstimateRangeGB: [ // ItemCollectionSizeEstimateRange
 * //       Number("double"),
 * //     ],
 * //   },
 * // };
 *
 * ```
 *
 * @param DeleteItemCommandInput - {@link DeleteItemCommandInput}
 * @returns {@link DeleteItemCommandOutput}
 * @see {@link DeleteItemCommandInput} for command's `input` shape.
 * @see {@link DeleteItemCommandOutput} for command's `response` shape.
 * @see {@link DynamoDBClientResolvedConfig | config} for DynamoDBClient's `config` shape.
 *
 * @throws {@link ConditionalCheckFailedException} (client fault)
 *  <p>A condition specified in the operation failed to be evaluated.</p>
 *
 * @throws {@link InternalServerError} (server fault)
 *  <p>An error occurred on the server side.</p>
 *
 * @throws {@link InvalidEndpointException} (client fault)
 *
 * @throws {@link ItemCollectionSizeLimitExceededException} (client fault)
 *  <p>An item collection is too large. This exception is only returned for tables that
 *             have one or more local secondary indexes.</p>
 *
 * @throws {@link ProvisionedThroughputExceededException} (client fault)
 *  <p>The request was denied due to request throttling. For detailed information about
 *             why the request was throttled and the ARN of the impacted resource, find the <a href="https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_ThrottlingReason.html">ThrottlingReason</a> field in the returned exception. The Amazon Web Services
 *             SDKs for DynamoDB automatically retry requests that receive this exception.
 *             Your request is eventually successful, unless your retry queue is too large to finish.
 *             Reduce the frequency of requests and use exponential backoff. For more information, go
 *             to <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html#Programming.Errors.RetryAndBackoff">Error Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.</p>
 *
 * @throws {@link ReplicatedWriteConflictException} (client fault)
 *  <p>The request was rejected because one or more items in the request are being modified
 *             by a request in another Region. </p>
 *
 * @throws {@link RequestLimitExceeded} (client fault)
 *  <p>Throughput exceeds the current throughput quota for your account. For detailed
 *             information about why the request was throttled and the ARN of the impacted resource,
 *             find the <a href="https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_ThrottlingReason.html">ThrottlingReason</a> field in the returned exception. Contact <a href="https://aws.amazon.com/support">Amazon Web Services Support</a> to request a quota
 *             increase.</p>
 *
 * @throws {@link ResourceNotFoundException} (client fault)
 *  <p>The operation tried to access a nonexistent table or index. The resource might not
 *             be specified correctly, or its status might not be <code>ACTIVE</code>.</p>
 *
 * @throws {@link ThrottlingException} (client fault)
 *  <p>The request was denied due to request throttling. For detailed information about why
 *             the request was throttled and the ARN of the impacted resource, find the <a href="https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_ThrottlingReason.html">ThrottlingReason</a> field in the returned exception.</p>
 *
 * @throws {@link TransactionConflictException} (client fault)
 *  <p>Operation was rejected because there is an ongoing transaction for the
 *             item.</p>
 *
 * @throws {@link DynamoDBServiceException}
 * <p>Base exception class for all service exceptions from DynamoDB service.</p>
 *
 *
 * @example To delete an item
 * ```javascript
 * // This example deletes an item from the Music table.
 * const input = {
 *   Key: {
 *     Artist: {
 *       S: "No One You Know"
 *     },
 *     SongTitle: {
 *       S: "Scared of My Shadow"
 *     }
 *   },
 *   TableName: "Music"
 * };
 * const command = new DeleteItemCommand(input);
 * const response = await client.send(command);
 * /* response is
 * {
 *   ConsumedCapacity: {
 *     CapacityUnits: 1,
 *     TableName: "Music"
 *   }
 * }
 * *\/
 * ```
 *
 * @public
 */
export declare class DeleteItemCommand extends DeleteItemCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DeleteItemInput;
            output: DeleteItemOutput;
        };
        sdk: {
            input: DeleteItemCommandInput;
            output: DeleteItemCommandOutput;
        };
    };
}