function awsSignatureV4import { awsSignatureV4 } from "https://deno.land/x/dynamodb@v1.0.0/client/mod.ts"; awsSignatureV4(key: Uint8Array,msg: Uint8Array,outputEncoding?: string,): string | Uint8ArrayCreates a HMAC-SHA256 mac. Parameterskey: Uint8Arraymsg: Uint8ArrayoptionaloutputEncoding: stringReturnsstring | Uint8Array