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// Copyright 2022-2022 the Deno authors. All rights reserved. MIT license.
const EXTENSIONS = [".mjs", ".js", ".ts", ".rs"];const EXCLUDED_PATHS = [  ".git",  "node/_module",  "dotenv/testdata",  "fs/testdata",  "http/testdata",  "node/_module/cjs",  "node/_module/node_modules",  "node/_tools",  "node/testdata",];
const ROOT = new URL("../", import.meta.url).pathname.slice(0, -1);const FAIL_FAST = Deno.args.includes("--fail-fast");
const COPYRIGHT_REGEX =  /\/\/ Copyright \d{4}-\d{4} (the )?Deno authors. All rights reserved. MIT license./;
let shouldFail = false;
function walk(dir: string) {  for (const x of Deno.readDirSync(dir)) {    const filePath = `${dir}/${x.name}`;
    if (x.isDirectory) {      walk(filePath);      continue;    }
    const isExcluded = EXCLUDED_PATHS      .map((x) => filePath.includes(x))      .some((x) => x);    if (      isExcluded ||      !EXTENSIONS.map((x) => filePath.endsWith(x)).some((x) => x)    ) {      continue;    }
    const content = Deno.readTextFileSync(filePath);    const hasNotice = content      .split("\n")      .filter((_, i) => i < 10)      .map((x) => COPYRIGHT_REGEX.test(x))      .some((x) => x);
    if (!hasNotice) {      console.error(`Missing Copyright Notice: ${filePath}`);      if (FAIL_FAST) Deno.exit(1);      shouldFail = true;    }  }}
walk(ROOT);if (shouldFail) Deno.exit(1);