Function findNative

packages/jest-haste-map/src/crawlers/node.ts:133–193

(
  roots: Array<string>,
  extensions: Array<string>,
  ignore: IgnoreMatcher,
  enableSymlinks: boolean,
  callback: Callback,
)

}

function findNative(
  roots: Array<string>,
  extensions: Array<string>,
  ignore: IgnoreMatcher,
  enableSymlinks: boolean,
  callback: Callback,
): void {
  const args = [...roots];
  if (enableSymlinks) {
    args.push('(', '-type', 'f', '-o', '-type', 'l', ')');
  } else {
    args.push('-type', 'f');
  }

  if (extensions.length > 0) {
    args.push('(');
  }
  for (const [index, ext] of extensions.entries()) {
    if (index) {
      args.push('-o');
    }
    args.push('-iname', `*.${ext}`);
  }
  if (extensions.length > 0) {
    args.push(')');
  }

  const child = spawn('find', args);
  let stdout = '';
  if (child.stdout === null) {
    throw new Error(
      'stdout is null - this should never happen. Please open up an issue at https://github.com/jestjs/jest',
    );
  }
  child.stdout.setEncoding('utf8');
  child.stdout.on('data', data => (stdout += data));

  child.stdout.on('close', () => {
    const lines = stdout
      .trim()
      .split('\n')
      .filter(x => !ignore(x));
    const result: Result = [];
    let count = lines.length;
    if (count) {
      for (const path of lines) {
        fs.stat(path, (err, stat) => {
          // Filter out symlinks that describe directories
          if (!err && stat && !stat.isDirectory()) {
            result.push([path, stat.mtime.getTime(), stat.size]);
          }
          if (--count === 0) {
            callback(result);
          }
        });
      }
    } else {
      callback([]);