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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
export const CACHE_PERM = 0o644;
export function assert(cond: unknown, msg = "Assertion failed."): asserts cond {  if (!cond) {    throw new Error(msg);  }}
export function isFileSync(filePath: string): boolean {  try {    const stats = Deno.lstatSync(filePath);    return stats.isFile;  } catch (err) {    if (err instanceof Deno.errors.NotFound) {      return false;    }    throw err;  }}