Fs (melange.Node.Fs)

let readdirSync: string => array(string);

Most fs functions let you omit the callback argument. If you do, a default callback is used that rethrows errors. To get a trace to the original call site, set the `NODE_DEBUG` environment variable:

let renameSync: string => string => unit;

type fd = pri int;

type path = string;

The relative path to a filename can be used. Remember, however, that this path will be relative to process.cwd().

module Watch: { ... };

let ftruncateSync: fd => int => unit;

let truncateSync: string => int => unit;

let chownSync: string => uid:int => gid:int => unit;

let fchownSync: fd => uid:int => gid:int => unit;

let readlinkSync: string => string;

let unlinkSync: string => unit;

let rmdirSync: string => unit;

let openSync: 
  path =>
  [ `Read
  | `Read_write
  | `Read_write_sync
  | `Write
  | `Write_fail_if_exists
  | `Write_read
  | `Write_read_fail_if_exists
  | `Append
  | `Append_fail_if_exists
  | `Append_read
  | `Append_read_fail_if_exists ] =>
  unit;

type encoding = [

| `hex
| `utf8
| `ascii
| `latin1
| `base64
| `ucs2
| `base64
| `binary
| `utf16le

];

let readFileSync: string => encoding => string;

let readFileAsUtf8Sync: string => string;

let existsSync: string => bool;

let writeFileSync: string => string => encoding => unit;

let writeFileAsUtf8Sync: string => string => unit;