{{alias}}( path[, flags[, mode]], clbk )
    Asynchronously opens a file.

    Some characters, such as <>:"/\|?*, are reserved under Windows.
    Under NTFS, if the path contains a colon, Node.js will open a file system
    stream.

    Parameters
    ----------
    path: string|Buffer
        Filename.

    flags: string|number (optional)
        File system flags. Default: 'r'.

    mode: integer (optional)
        File mode (permission and sticky bits). This sets the file mode, but
        only if the file was created. On Windows, only the write permission can
        be manipulated. Default: 0o666.

    clbk: Function
        Callback to invoke upon opening a file.

    Examples
    --------
    > function onOpen( error, fd ) {
    ...     if ( error ) {
    ...         console.error( error.message );
    ...     } else {
    ...         {{alias:@stdlib/fs/close}}.sync( fd );
    ...     }
    ... };
    > {{alias}}( './beep/boop.txt', onOpen );


{{alias}}.sync( path[, flags[, mode]] )
    Synchronously opens a file.

    Parameters
    ----------
    path: string|Buffer
        Filename.

    flags: string|number (optional)
        File system flags. Default: 'r'.

    mode: integer (optional)
        File mode (permission and sticky bits).  This sets the file mode, but
        only if the file was created. On Windows, only the write permission can
        be manipulated. Default: 0o666.

    Returns
    -------
    fd: Error|integer
        File descriptor.

    Examples
    --------
    > var fd = {{alias}}.sync( './beep/boop.txt' );
    > if ( !{{alias:@stdlib/assert/is-error}}( fd ) ) { {{alias:@stdlib/fs/close}}.sync( fd ); };

    See Also
    --------