import { Deno } from "https://deno.land/x/deno@v1.28.3/cli/tsc/dts/lib.deno.ns.d.ts";
const { fstatSync } = Deno;
Synchronously returns a Deno.FileInfo for the given file
stream.
import { assert } from "https://deno.land/std/testing/asserts.ts";
const file = Deno.openSync("file.txt", { read: true });
const fileInfo = Deno.fstatSync(file.rid);
assert(fileInfo.isFile);