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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { isAbsolute, join, normalize } from "./deps.ts";import { DiskCache } from "./disk_cache.ts";import { cacheDir, homeDir } from "./dirs.ts";import { HttpCache } from "./http_cache.ts";import { assert } from "./util.ts";
export class DenoDir {  deps: HttpCache;  gen: DiskCache;  root: string;
  constructor(root?: string | URL, readOnly?: boolean) {    if (root) {      if (root instanceof URL) {        root = root.toString();      }      if (!isAbsolute(root)) {        root = normalize(join(Deno.cwd(), root));      }    } else {      Deno.permissions.request({ name: "env", variable: "DENO_DIR" });      const dd = Deno.env.get("DENO_DIR");      if (dd) {        if (!isAbsolute(dd)) {          root = normalize(join(Deno.cwd(), dd));        } else {          root = dd;        }      } else {        const cd = cacheDir();        if (cd) {          root = join(cd, "deno");        } else {          const hd = homeDir();          if (hd) {            root = join(hd, ".deno");          }        }      }    }    assert(root, "Could not set the Deno root directory");    assert(isAbsolute(root), `The root directory "${root}" is not absolute.`);    Deno.permissions.request({ name: "read" });    this.root = root;    this.deps = new HttpCache(join(root, "deps"), readOnly);    this.gen = new DiskCache(join(root, "gen"));  }}