Function parseS3Uri

packages/aws-lambda/src/s3Transport.ts:40–55

(uri: string)

/** Parse `s3://bucket/key/path` → `{ bucket, key }`. Throws on malformed input. */
export function parseS3Uri(uri: string): S3Location {
  if (!uri.startsWith("s3://")) {
    throw new Error(`[s3Transport] expected s3:// URI, got: ${JSON.stringify(uri)}`);
  }
  const rest = uri.slice("s3://".length);
  const slash = rest.indexOf("/");
  if (slash === -1) {
    throw new Error(`[s3Transport] missing key in s3 URI: ${JSON.stringify(uri)}`);
  }
  const bucket = rest.slice(0, slash);
  const key = rest.slice(slash + 1);
  if (!bucket || !key) {
    throw new Error(`[s3Transport] empty bucket or key in s3 URI: ${JSON.stringify(uri)}`);
  }
  return { bucket, key };
}

/** Build `s3://bucket/key` from a location. */
export function formatS3Uri(loc: S3Location): string {