Function isPathInsideDir

src/node/utils/pathUtils.ts:140–146

(dirPath: string, filePath: string)

 * isPathInsideDir("/home/user/project", "/home/user/other/file.ts")        // false
 */
export function isPathInsideDir(dirPath: string, filePath: string): boolean {
  const resolvedDir = path.resolve(dirPath);
  const resolvedFile = path.resolve(filePath);
  const relative = path.relative(resolvedDir, resolvedFile);

  return relative === "" || (!relative.startsWith("..") && !path.isAbsolute(relative));
}