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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { walk } from "../fs/walk.ts";import { globToRegExp } from "../path/glob.ts";
const EXTENSIONS = [".mjs", ".js", ".ts", ".rs"];const EXCLUDED_DIRS = [  "**/node/_module",  "**/node/_tools/test",  "**/node/_tools/versions",  "**/dotenv/testdata",  "**/fs/testdata",  "**/http/testdata",  "**/node/testdata",  "**/crypto/_wasm/target",  "**/encoding/varint/_wasm/target",];
const ROOT = new URL("../", import.meta.url);const CHECK = Deno.args.includes("--check");const FIRST_YEAR = 2018;const CURRENT_YEAR = new Date().getFullYear();const RX_COPYRIGHT = new RegExp(  `// Copyright ([0-9]{4})-([0-9]{4}) the Deno authors\\. All rights reserved\\. MIT license\\.\n`,);const COPYRIGHT =  `// Copyright ${FIRST_YEAR}-${CURRENT_YEAR} the Deno authors. All rights reserved. MIT license.`;
let failed = false;
for await (  const { path } of walk(ROOT, {    exts: EXTENSIONS,    skip: EXCLUDED_DIRS.map((path) => globToRegExp(path)),    includeDirs: false,  })) {  const content = await Deno.readTextFile(path);  const match = content.match(RX_COPYRIGHT);
  if (!match) {    if (CHECK) {      console.error(`Missing copyright header: ${path}`);      failed = true;    } else {      const contentWithCopyright = COPYRIGHT + "\n" + content;      await Deno.writeTextFile(path, contentWithCopyright);      console.log("Copyright header automatically added to " + path);    }  } else if (    parseInt(match[1]) !== FIRST_YEAR || parseInt(match[2]) !== CURRENT_YEAR  ) {    if (CHECK) {      console.error(`Incorrect copyright year: ${path}`);      failed = true;    } else {      const index = match.index ?? 0;      const contentWithoutCopyright = content.replace(match[0], "");      const contentWithCopyright = contentWithoutCopyright.substring(0, index) +        COPYRIGHT + "\n" + contentWithoutCopyright.substring(index);      await Deno.writeTextFile(path, contentWithCopyright);      console.log("Copyright header automatically updated in " + path);    }  }}
if (failed) {  console.info(`Copyright header should be "${COPYRIGHT}"`);  Deno.exit(1);}