import { parseLine as r, createLineData as u } from "./parser.js";
function h(s, f = " ") {
  const e = u("", f);
  let n = !1;
  async function c(t = -1) {
    if (n)
      n = !1;
    else {
      const i = await s.next();
      if (i === null)
        return !1;
      e.line = i, r(e);
    }
    return l() <= t ? (n = !0, !1) : !0;
  }
  const l = () => e.level, o = (t = e.offsetHead) => e.line.slice(t), a = () => e.line.slice(e.offsetHead, e.offsetTail);
  return {
    next: c,
    level: l,
    line: o,
    head: a,
    tail: () => e.line.slice(e.offsetTail),
    match: (t) => t === a()
  };
}
export {
  h as useDocument
};