AWS SDK v3 Patterns

Quick Guide: AWS SDK v3 for JavaScript/TypeScript uses modular packages (@aws-sdk/client-*) with a command pattern: create a client, instantiate a command, call client.send(command). Import only the services you need for tree-shaking. Use DynamoDBDocumentClient for native JS types. Use getSignedUrl from @aws-sdk/s3-request-presigner for presigned URLs. Handle errors with instanceof specific exception classes. Use built-in paginators (paginate*) with for await...of.

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CRITICAL: Before Using This Skill

All code must follow project conventions in CLAUDE.md (kebab-case, named exports, import ordering, import type, named constants)

(You MUST use AWS SDK v3 modular packages (@aws-sdk/client-*) — NEVER the monolithic aws-sdk v2 package)

(You MUST use the command pattern: client.send(new XxxCommand({...})) — NEVER call methods directly on the client)

(You MUST use DynamoDBDocumentClient from @aws-sdk/lib-dynamodb for DynamoDB — it auto-marshalls native JS types)

(You MUST handle errors with instanceof specific exception classes — NEVER catch generic Error and check .code)