1  >var x = 10;

    ~~~~~~~~~~~~                                  => Pos: (0 to 11)  SpanInfo: {"start":0,"length":10}
    >var x = 10
    >:=> (line 1, col 0) to (line 1, col 10)
--------------------------------
2  >

    ~                                             => Pos: (12 to 12)  SpanInfo: undefined
--------------------------------
3  >var y = 10;
    ~~~~~~~~~~~                                   => Pos: (13 to 23)  SpanInfo: {"start":13,"length":10}
    >var y = 10
    >:=> (line 3, col 0) to (line 3, col 10)