s3_bucket_policy.json

{
	"Version": "2008-10-17",
	"Statement": [
		{
			"Sid": "npm-register user",
			"Effect": "Allow",
			"Principal": {
				"AWS": "arn:aws:iam::IAMUSER"
			},
			"Action": "s3:*",
			"Resource": [
				"arn:aws:s3:::S3BUCKET/*",
				"arn:aws:s3:::S3BUCKET"
			]
		}
	]
}