variable isBlobLikeimport { isBlobLike } from "https://deno.land/x/openai@v4.28.4/uploads.ts"; The BlobLike type omits arrayBuffer() because @types/node-fetch@^2.6.4 lacks it; but this check adds the arrayBuffer() method type because it is available and used at runtime type(value: any) => value is BlobLike & { arrayBuffer(): Promise<ArrayBuffer>; }