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@aws-sdk/client-s3

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AWS SDK for JavaScript S3 Client for Node.js, Browser and React Native

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import { checkExceptions, createWaiter, WaiterState } from "@aws-sdk/util-waiter"; import { HeadObjectCommand } from "../commands/HeadObjectCommand"; const checkState = async (client, input) => { let reason; try { const result = await client.send(new HeadObjectCommand(input)); reason = result; return { state: WaiterState.SUCCESS, reason }; } catch (exception) { reason = exception; if (exception.name && exception.name == "NotFound") { return { state: WaiterState.RETRY, reason }; } } return { state: WaiterState.RETRY, reason }; }; export const waitForObjectExists = async (params, input) => { const serviceDefaults = { minDelay: 5, maxDelay: 120 }; return createWaiter({ ...serviceDefaults, ...params }, input, checkState); }; export const waitUntilObjectExists = async (params, input) => { const serviceDefaults = { minDelay: 5, maxDelay: 120 }; const result = await createWaiter({ ...serviceDefaults, ...params }, input, checkState); return checkExceptions(result); };