main -> seed eol map:+ {% d=> {
    return {
        seeds: d[0],
        map: d[2]
    }
}
%}
seed -> "seeds" _ ":" (__ int):+ eol {% d=> {
    return d[3].map(s => s[1]);
}
%}

map -> [a-zA-Z]:+ "-to-" [a-zA-Z]:+ __ "map" _ ":" eol data eol:? {% d=> {
    return {
        from: d[0].join(""),
        to: d[2].join(""),
        data: d[8].toSorted((a,b)=> a.src - b.src)
    }
} %}

data -> dataRecord:+ {% d=>
    d[0]
%}

dataRecord -> int __ int __ int eol {% 
    (data)=> ({
        dst: data[0],
        src: data[2],
        range: data[4]})
%}

eol -> "\n" | "\r\n" {% d=> null %}

int -> [0-9]:+ {% d=> parseInt(d[0].join("")) %}
_ -> wschar:* {% d=> null %}
__ -> wschar:+ {% d=> null %}
wschar -> [ \t] {% id %}