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// This example uses an external module for generating pre-signing URLs.// It does not fetch credentials on its own, so//   you might want to load your credentials with /x/aws_api as shown below :)import { getSignedUrl } from "https://deno.land/x/aws_s3_presign@1.2.1/mod.ts";
import { DefaultCredentialsProvider, getDefaultRegion } from "../client/credentials.ts";
/** Convert /x/aws_api Credentials into /x/aws_s3_presign parameters */async function getPresignerCredentials() {  const credentials = await DefaultCredentialsProvider.getCredentials();  return {    accessKeyId: credentials.awsAccessKeyId,    secretAccessKey: credentials.awsSecretKey,    sessionToken: credentials.sessionToken,    region: credentials.region ?? getDefaultRegion(),  };}
/** Generate a basic pre-signed URL */async function presignGetObject(bucket: string, key: string) {  return getSignedUrl({    ...(await getPresignerCredentials()),    bucketName: bucket,    objectPath: `/${key}`,  });}
console.log(await presignGetObject('my-bucket', 'my-key'));