topos/node_modules/.vite/deps/chunk-MKFMOIK6.js

// node_modules/@codemirror/state/dist/index.js
var Text = class _Text {
  /**
  Get the line description around the given position.
  */
  lineAt(pos) {
    if (pos < 0 || pos > this.length)
      throw new RangeError(`Invalid position ${pos} in document of length ${this.length}`);
    return this.lineInner(pos, false, 1, 0);
  }
  /**
  Get the description for the given (1-based) line number.
  */
  line(n) {
    if (n < 1 || n > this.lines)
      throw new RangeError(`Invalid line number ${n} in ${this.lines}-line document`);
    return this.lineInner(n, true, 1, 0);
  }
  /**
  Replace a range of the text with the given content.
  */
  replace(from, to, text) {
    let parts = [];
    this.decompose(
      0,
      from,
      parts,
      2
      /* Open.To */
    );
    if (text.length)
      text.decompose(
        0,
        text.length,
        parts,
        1 | 2
        /* Open.To */
      );
    this.decompose(
      to,
      this.length,
      parts,
      1
      /* Open.From */
    );
    return TextNode.from(parts, this.length - (to - from) + text.length);
  }
  /**
  Append another document to this one.
  */
  append(other) {
    return this.replace(this.length, this.length, other);
  }
  /**
  Retrieve the text between the given points.
  */
  slice(from, to = this.length) {
    let parts = [];
    this.decompose(from, to, parts, 0);
    return TextNode.from(parts, to - from);
  }
  /**
  Test whether this text is equal to another instance.
  */
  eq(other) {
    if (other == this)
      return true;
    if (other.length != this.length || other.lines != this.lines)
      return false;
    let start = this.scanIdentical(other, 1), end = this.length - this.scanIdentical(other, -1);
    let a = new RawTextCursor(this), b = new RawTextCursor(other);
    for (let skip = start, pos = start; ; ) {
      a.next(skip);
      b.next(skip);
      skip = 0;
      if (a.lineBreak != b.lineBreak || a.done != b.done || a.value != b.value)
        return false;
      pos += a.value.length;
      if (a.done || pos >= end)
        return true;
    }
  }
  /**
  Iterate over the text. When `dir` is `-1`, iteration happens
  from end to start. This will return lines and the breaks between
  them as separate strings.
  */
  iter(dir = 1) {
    return new RawTextCursor(this, dir);
  }
  /**
  Iterate over a range of the text. When `from` > `to`, the
  iterator will run in reverse.
  */
  iterRange(from, to = this.length) {
    return new PartialTextCursor(this, from, to);
  }
  /**
  Return a cursor that iterates over the given range of lines,
  _without_ returning the line breaks between, and yielding empty
  strings for empty lines.
  
  When `from` and `to` are given, they should be 1-based line numbers.
  */
  iterLines(from, to) {
    let inner;
    if (from == null) {
      inner = this.iter();
    } else {
      if (to == null)
        to = this.lines + 1;
      let start = this.line(from).from;
      inner = this.iterRange(start, Math.max(start, to == this.lines + 1 ? this.length : to <= 1 ? 0 : this.line(to - 1).to));
    }
    return new LineCursor(inner);
  }
  /**
  Return the document as a string, using newline characters to
  separate lines.
  */
  toString() {
    return this.sliceString(0);
  }
  /**
  Convert the document to an array of lines (which can be
  deserialized again via [`Text.of`](https://codemirror.net/6/docs/ref/#state.Text^of)).
  */
  toJSON() {
    let lines = [];
    this.flatten(lines);
    return lines;
  }
  /**
  @internal
  */
  constructor() {
  }
  /**
  Create a `Text` instance for the given array of lines.
  */
  static of(text) {
    if (text.length == 0)
      throw new RangeError("A document must have at least one line");
    if (text.length == 1 && !text[0])
      return _Text.empty;
    return text.length <= 32 ? new TextLeaf(text) : TextNode.from(TextLeaf.split(text, []));
  }
};
var TextLeaf = class _TextLeaf extends Text {
  constructor(text, length = textLength(text)) {
    super();
    this.text = text;
    this.length = length;
  }
  get lines() {
    return this.text.length;
  }
  get children() {
    return null;
  }
  lineInner(target, isLine, line, offset) {
    for (let i = 0; ; i++) {
      let string = this.text[i], end = offset + string.length;
      if ((isLine ? line : end) >= target)
        return new Line(offset, end, line, string);
      offset = end + 1;
      line++;
    }
  }
  decompose(from, to, target, open) {
    let text = from <= 0 && to >= this.length ? this : new _TextLeaf(sliceText(this.text, from, to), Math.min(to, this.length) - Math.max(0, from));
    if (open & 1) {
      let prev = target.pop();
      let joined = appendText(text.text, prev.text.slice(), 0, text.length);
      if (joined.length <= 32) {
        target.push(new _TextLeaf(joined, prev.length + text.length));
      } else {
        let mid = joined.length >> 1;
        target.push(new _TextLeaf(joined.slice(0, mid)), new _TextLeaf(joined.slice(mid)));
      }
    } else {
      target.push(text);
    }
  }
  replace(from, to, text) {
    if (!(text instanceof _TextLeaf))
      return super.replace(from, to, text);
    let lines = appendText(this.text, appendText(text.text, sliceText(this.text, 0, from)), to);
    let newLen = this.length + text.length - (to - from);
    if (lines.length <= 32)
      return new _TextLeaf(lines, newLen);
    return TextNode.from(_TextLeaf.split(lines, []), newLen);
  }
  sliceString(from, to = this.length, lineSep = "\n") {
    let result = "";
    for (let pos = 0, i = 0; pos <= to && i < this.text.length; i++) {
      let line = this.text[i], end = pos + line.length;
      if (pos > from && i)
        result += lineSep;
      if (from < end && to > pos)
        result += line.slice(Math.max(0, from - pos), to - pos);
      pos = end + 1;
    }
    return result;
  }
  flatten(target) {
    for (let line of this.text)
      target.push(line);
  }
  scanIdentical() {
    return 0;
  }
  static split(text, target) {
    let part = [], len = -1;
    for (let line of text) {
      part.push(line);
      len += line.length + 1;
      if (part.length == 32) {
        target.push(new _TextLeaf(part, len));
        part = [];
        len = -1;
      }
    }
    if (len > -1)
      target.push(new _TextLeaf(part, len));
    return target;
  }
};
var TextNode = class _TextNode extends Text {
  constructor(children, length) {
    super();
    this.children = children;
    this.length = length;
    this.lines = 0;
    for (let child of children)
      this.lines += child.lines;
  }
  lineInner(target, isLine, line, offset) {
    for (let i = 0; ; i++) {
      let child = this.children[i], end = offset + child.length, endLine = line + child.lines - 1;
      if ((isLine ? endLine : end) >= target)
        return child.lineInner(target, isLine, line, offset);
      offset = end + 1;
      line = endLine + 1;
    }
  }
  decompose(from, to, target, open) {
    for (let i = 0, pos = 0; pos <= to && i < this.children.length; i++) {
      let child = this.children[i], end = pos + child.length;
      if (from <= end && to >= pos) {
        let childOpen = open & ((pos <= from ? 1 : 0) | (end >= to ? 2 : 0));
        if (pos >= from && end <= to && !childOpen)
          target.push(child);
        else
          child.decompose(from - pos, to - pos, target, childOpen);
      }
      pos = end + 1;
    }
  }
  replace(from, to, text) {
    if (text.lines < this.lines)
      for (let i = 0, pos = 0; i < this.children.length; i++) {
        let child = this.children[i], end = pos + child.length;
        if (from >= pos && to <= end) {
          let updated = child.replace(from - pos, to - pos, text);
          let totalLines = this.lines - child.lines + updated.lines;
          if (updated.lines < totalLines >> 5 - 1 && updated.lines > totalLines >> 5 + 1) {
            let copy = this.children.slice();
            copy[i] = updated;
            return new _TextNode(copy, this.length - (to - from) + text.length);
          }
          return super.replace(pos, end, updated);
        }
        pos = end + 1;
      }
    return super.replace(from, to, text);
  }
  sliceString(from, to = this.length, lineSep = "\n") {
    let result = "";
    for (let i = 0, pos = 0; i < this.children.length && pos <= to; i++) {
      let child = this.children[i], end = pos + child.length;
      if (pos > from && i)
        result += lineSep;
      if (from < end && to > pos)
        result += child.sliceString(from - pos, to - pos, lineSep);
      pos = end + 1;
    }
    return result;
  }
  flatten(target) {
    for (let child of this.children)
      child.flatten(target);
  }
  scanIdentical(other, dir) {
    if (!(other instanceof _TextNode))
      return 0;
    let length = 0;
    let [iA, iB, eA, eB] = dir > 0 ? [0, 0, this.children.length, other.children.length] : [this.children.length - 1, other.children.length - 1, -1, -1];
    for (; ; iA += dir, iB += dir) {
      if (iA == eA || iB == eB)
        return length;
      let chA = this.children[iA], chB = other.children[iB];
      if (chA != chB)
        return length + chA.scanIdentical(chB, dir);
      length += chA.length + 1;
    }
  }
  static from(children, length = children.reduce((l, ch) => l + ch.length + 1, -1)) {
    let lines = 0;
    for (let ch of children)
      lines += ch.lines;
    if (lines < 32) {
      let flat = [];
      for (let ch of children)
        ch.flatten(flat);
      return new TextLeaf(flat, length);
    }
    let chunk = Math.max(
      32,
      lines >> 5
      /* Tree.BranchShift */
    ), maxChunk = chunk << 1, minChunk = chunk >> 1;
    let chunked = [], currentLines = 0, currentLen = -1, currentChunk = [];
    function add(child) {
      let last;
      if (child.lines > maxChunk && child instanceof _TextNode) {
        for (let node of child.children)
          add(node);
      } else if (child.lines > minChunk && (currentLines > minChunk || !currentLines)) {
        flush();
        chunked.push(child);
      } else if (child instanceof TextLeaf && currentLines && (last = currentChunk[currentChunk.length - 1]) instanceof TextLeaf && child.lines + last.lines <= 32) {
        currentLines += child.lines;
        currentLen += child.length + 1;
        currentChunk[currentChunk.length - 1] = new TextLeaf(last.text.concat(child.text), last.length + 1 + child.length);
      } else {
        if (currentLines + child.lines > chunk)
          flush();
        currentLines += child.lines;
        currentLen += child.length + 1;
        currentChunk.push(child);
      }
    }
    function flush() {
      if (currentLines == 0)
        return;
      chunked.push(currentChunk.length == 1 ? currentChunk[0] : _TextNode.from(currentChunk, currentLen));
      currentLen = -1;
      currentLines = currentChunk.length = 0;
    }
    for (let child of children)
      add(child);
    flush();
    return chunked.length == 1 ? chunked[0] : new _TextNode(chunked, length);
  }
};
Text.empty = new TextLeaf([""], 0);
function textLength(text) {
  let length = -1;
  for (let line of text)
    length += line.length + 1;
  return length;
}
function appendText(text, target, from = 0, to = 1e9) {
  for (let pos = 0, i = 0, first = true; i < text.length && pos <= to; i++) {
    let line = text[i], end = pos + line.length;
    if (end >= from) {
      if (end > to)
        line = line.slice(0, to - pos);
      if (pos < from)
        line = line.slice(from - pos);
      if (first) {
        target[target.length - 1] += line;
        first = false;
      } else
        target.push(line);
    }
    pos = end + 1;
  }
  return target;
}
function sliceText(text, from, to) {
  return appendText(text, [""], from, to);
}
var RawTextCursor = class {
  constructor(text, dir = 1) {
    this.dir = dir;
    this.done = false;
    this.lineBreak = false;
    this.value = "";
    this.nodes = [text];
    this.offsets = [dir > 0 ? 1 : (text instanceof TextLeaf ? text.text.length : text.children.length) << 1];
  }
  nextInner(skip, dir) {
    this.done = this.lineBreak = false;
    for (; ; ) {
      let last = this.nodes.length - 1;
      let top = this.nodes[last], offsetValue = this.offsets[last], offset = offsetValue >> 1;
      let size = top instanceof TextLeaf ? top.text.length : top.children.length;
      if (offset == (dir > 0 ? size : 0)) {
        if (last == 0) {
          this.done = true;
          this.value = "";
          return this;
        }
        if (dir > 0)
          this.offsets[last - 1]++;
        this.nodes.pop();
        this.offsets.pop();
      } else if ((offsetValue & 1) == (dir > 0 ? 0 : 1)) {
        this.offsets[last] += dir;
        if (skip == 0) {
          this.lineBreak = true;
          this.value = "\n";
          return this;
        }
        skip--;
      } else if (top instanceof TextLeaf) {
        let next = top.text[offset + (dir < 0 ? -1 : 0)];
        this.offsets[last] += dir;
        if (next.length > Math.max(0, skip)) {
          this.value = skip == 0 ? next : dir > 0 ? next.slice(skip) : next.slice(0, next.length - skip);
          return this;
        }
        skip -= next.length;
      } else {
        let next = top.children[offset + (dir < 0 ? -1 : 0)];
        if (skip > next.length) {
          skip -= next.length;
          this.offsets[last] += dir;
        } else {
          if (dir < 0)
            this.offsets[last]--;
          this.nodes.push(next);
          this.offsets.push(dir > 0 ? 1 : (next instanceof TextLeaf ? next.text.length : next.children.length) << 1);
        }
      }
    }
  }
  next(skip = 0) {
    if (skip < 0) {
      this.nextInner(-skip, -this.dir);
      skip = this.value.length;
    }
    return this.nextInner(skip, this.dir);
  }
};
var PartialTextCursor = class {
  constructor(text, start, end) {
    this.value = "";
    this.done = false;
    this.cursor = new RawTextCursor(text, start > end ? -1 : 1);
    this.pos = start > end ? text.length : 0;
    this.from = Math.min(start, end);
    this.to = Math.max(start, end);
  }
  nextInner(skip, dir) {
    if (dir < 0 ? this.pos <= this.from : this.pos >= this.to) {
      this.value = "";
      this.done = true;
      return this;
    }
    skip += Math.max(0, dir < 0 ? this.pos - this.to : this.from - this.pos);
    let limit = dir < 0 ? this.pos - this.from : this.to - this.pos;
    if (skip > limit)
      skip = limit;
    limit -= skip;
    let { value } = this.cursor.next(skip);
    this.pos += (value.length + skip) * dir;
    this.value = value.length <= limit ? value : dir < 0 ? value.slice(value.length - limit) : value.slice(0, limit);
    this.done = !this.value;
    return this;
  }
  next(skip = 0) {
    if (skip < 0)
      skip = Math.max(skip, this.from - this.pos);
    else if (skip > 0)
      skip = Math.min(skip, this.to - this.pos);
    return this.nextInner(skip, this.cursor.dir);
  }
  get lineBreak() {
    return this.cursor.lineBreak && this.value != "";
  }
};
var LineCursor = class {
  constructor(inner) {
    this.inner = inner;
    this.afterBreak = true;
    this.value = "";
    this.done = false;
  }
  next(skip = 0) {
    let { done, lineBreak, value } = this.inner.next(skip);
    if (done) {
      this.done = true;
      this.value = "";
    } else if (lineBreak) {
      if (this.afterBreak) {
        this.value = "";
      } else {
        this.afterBreak = true;
        this.next();
      }
    } else {
      this.value = value;
      this.afterBreak = false;
    }
    return this;
  }
  get lineBreak() {
    return false;
  }
};
if (typeof Symbol != "undefined") {
  Text.prototype[Symbol.iterator] = function() {
    return this.iter();
  };
  RawTextCursor.prototype[Symbol.iterator] = PartialTextCursor.prototype[Symbol.iterator] = LineCursor.prototype[Symbol.iterator] = function() {
    return this;
  };
}
var Line = class {
  /**
  @internal
  */
  constructor(from, to, number, text) {
    this.from = from;
    this.to = to;
    this.number = number;
    this.text = text;
  }
  /**
  The length of the line (not including any line break after it).
  */
  get length() {
    return this.to - this.from;
  }
};
var extend = "lc,34,7n,7,7b,19,,,,2,,2,,,20,b,1c,l,g,,2t,7,2,6,2,2,,4,z,,u,r,2j,b,1m,9,9,,o,4,,9,,3,,5,17,3,3b,f,,w,1j,,,,4,8,4,,3,7,a,2,t,,1m,,,,2,4,8,,9,,a,2,q,,2,2,1l,,4,2,4,2,2,3,3,,u,2,3,,b,2,1l,,4,5,,2,4,,k,2,m,6,,,1m,,,2,,4,8,,7,3,a,2,u,,1n,,,,c,,9,,14,,3,,1l,3,5,3,,4,7,2,b,2,t,,1m,,2,,2,,3,,5,2,7,2,b,2,s,2,1l,2,,,2,4,8,,9,,a,2,t,,20,,4,,2,3,,,8,,29,,2,7,c,8,2q,,2,9,b,6,22,2,r,,,,,,1j,e,,5,,2,5,b,,10,9,,2u,4,,6,,2,2,2,p,2,4,3,g,4,d,,2,2,6,,f,,jj,3,qa,3,t,3,t,2,u,2,1s,2,,7,8,,2,b,9,,19,3,3b,2,y,,3a,3,4,2,9,,6,3,63,2,2,,1m,,,7,,,,,2,8,6,a,2,,1c,h,1r,4,1c,7,,,5,,14,9,c,2,w,4,2,2,,3,1k,,,2,3,,,3,1m,8,2,2,48,3,,d,,7,4,,6,,3,2,5i,1m,,5,ek,,5f,x,2da,3,3x,,2o,w,fe,6,2x,2,n9w,4,,a,w,2,28,2,7k,,3,,4,,p,2,5,,47,2,q,i,d,,12,8,p,b,1a,3,1c,,2,4,2,2,13,,1v,6,2,2,2,2,c,,8,,1b,,1f,,,3,2,2,5,2,,,16,2,8,,6m,,2,,4,,fn4,,kh,g,g,g,a6,2,gt,,6a,,45,5,1ae,3,,2,5,4,14,3,4,,4l,2,fx,4,ar,2,49,b,4w,,1i,f,1k,3,1d,4,2,2,1x,3,10,5,,8,1q,,c,2,1g,9,a,4,2,,2n,3,2,,,2,6,,4g,,3,8,l,2,1l,2,,,,,m,,e,7,3,5,5f,8,2,3,,,n,,29,,2,6,,,2,,,2,,2,6j,,2,4,6,2,,2,r,2,2d,8,2,,,2,2y,,,,2,6,,,2t,3,2,4,,5,77,9,,2,6t,,a,2,,,4,,40,4,2,2,4,,w,a,14,6,2,4,8,,9,6,2,3,1a,d,,2,ba,7,,6,,,2a,m,2,7,,2,,2,3e,6,3,,,2,,7,,,20,2,3,,,,9n,2,f0b,5,1n,7,t4,,1r,4,29,,f5k,2,43q,,,3,4,5,8,8,2,7,u,4,44,3,1iz,1j,4,1e,8,,e,,m,5,,f,11s,7,,h,2,7,,2,,5,79,7,c5,4,15s,7,31,7,240,5,gx7k,2o,3k,6o".split(",").map((s) => s ? parseInt(s, 36) : 1);
for (let i = 1; i < extend.length; i++)
  extend[i] += extend[i - 1];
function isExtendingChar(code) {
  for (let i = 1; i < extend.length; i += 2)
    if (extend[i] > code)
      return extend[i - 1] <= code;
  return false;
}
function isRegionalIndicator(code) {
  return code >= 127462 && code <= 127487;
}
var ZWJ = 8205;
function findClusterBreak(str, pos, forward = true, includeExtending = true) {
  return (forward ? nextClusterBreak : prevClusterBreak)(str, pos, includeExtending);
}
function nextClusterBreak(str, pos, includeExtending) {
  if (pos == str.length)
    return pos;
  if (pos && surrogateLow(str.charCodeAt(pos)) && surrogateHigh(str.charCodeAt(pos - 1)))
    pos--;
  let prev = codePointAt(str, pos);
  pos += codePointSize(prev);
  while (pos < str.length) {
    let next = codePointAt(str, pos);
    if (prev == ZWJ || next == ZWJ || includeExtending && isExtendingChar(next)) {
      pos += codePointSize(next);
      prev = next;
    } else if (isRegionalIndicator(next)) {
      let countBefore = 0, i = pos - 2;
      while (i >= 0 && isRegionalIndicator(codePointAt(str, i))) {
        countBefore++;
        i -= 2;
      }
      if (countBefore % 2 == 0)
        break;
      else
        pos += 2;
    } else {
      break;
    }
  }
  return pos;
}
function prevClusterBreak(str, pos, includeExtending) {
  while (pos > 0) {
    let found = nextClusterBreak(str, pos - 2, includeExtending);
    if (found < pos)
      return found;
    pos--;
  }
  return 0;
}
function surrogateLow(ch) {
  return ch >= 56320 && ch < 57344;
}
function surrogateHigh(ch) {
  return ch >= 55296 && ch < 56320;
}
function codePointAt(str, pos) {
  let code0 = str.charCodeAt(pos);
  if (!surrogateHigh(code0) || pos + 1 == str.length)
    return code0;
  let code1 = str.charCodeAt(pos + 1);
  if (!surrogateLow(code1))
    return code0;
  return (code0 - 55296 << 10) + (code1 - 56320) + 65536;
}
function fromCodePoint(code) {
  if (code <= 65535)
    return String.fromCharCode(code);
  code -= 65536;
  return String.fromCharCode((code >> 10) + 55296, (code & 1023) + 56320);
}
function codePointSize(code) {
  return code < 65536 ? 1 : 2;
}
var DefaultSplit = /\r\n?|\n/;
var MapMode = function(MapMode2) {
  MapMode2[MapMode2["Simple"] = 0] = "Simple";
  MapMode2[MapMode2["TrackDel"] = 1] = "TrackDel";
  MapMode2[MapMode2["TrackBefore"] = 2] = "TrackBefore";
  MapMode2[MapMode2["TrackAfter"] = 3] = "TrackAfter";
  return MapMode2;
}(MapMode || (MapMode = {}));
var ChangeDesc = class _ChangeDesc {
  // Sections are encoded as pairs of integers. The first is the
  // length in the current document, and the second is -1 for
  // unaffected sections, and the length of the replacement content
  // otherwise. So an insertion would be (0, n>0), a deletion (n>0,
  // 0), and a replacement two positive numbers.
  /**
  @internal
  */
  constructor(sections) {
    this.sections = sections;
  }
  /**
  The length of the document before the change.
  */
  get length() {
    let result = 0;
    for (let i = 0; i < this.sections.length; i += 2)
      result += this.sections[i];
    return result;
  }
  /**
  The length of the document after the change.
  */
  get newLength() {
    let result = 0;
    for (let i = 0; i < this.sections.length; i += 2) {
      let ins = this.sections[i + 1];
      result += ins < 0 ? this.sections[i] : ins;
    }
    return result;
  }
  /**
  False when there are actual changes in this set.
  */
  get empty() {
    return this.sections.length == 0 || this.sections.length == 2 && this.sections[1] < 0;
  }
  /**
  Iterate over the unchanged parts left by these changes. `posA`
  provides the position of the range in the old document, `posB`
  the new position in the changed document.
  */
  iterGaps(f) {
    for (let i = 0, posA = 0, posB = 0; i < this.sections.length; ) {
      let len = this.sections[i++], ins = this.sections[i++];
      if (ins < 0) {
        f(posA, posB, len);
        posB += len;
      } else {
        posB += ins;
      }
      posA += len;
    }
  }
  /**
  Iterate over the ranges changed by these changes. (See
  [`ChangeSet.iterChanges`](https://codemirror.net/6/docs/ref/#state.ChangeSet.iterChanges) for a
  variant that also provides you with the inserted text.)
  `fromA`/`toA` provides the extent of the change in the starting
  document, `fromB`/`toB` the extent of the replacement in the
  changed document.
  
  When `individual` is true, adjacent changes (which are kept
  separate for [position mapping](https://codemirror.net/6/docs/ref/#state.ChangeDesc.mapPos)) are
  reported separately.
  */
  iterChangedRanges(f, individual = false) {
    iterChanges(this, f, individual);
  }
  /**
  Get a description of the inverted form of these changes.
  */
  get invertedDesc() {
    let sections = [];
    for (let i = 0; i < this.sections.length; ) {
      let len = this.sections[i++], ins = this.sections[i++];
      if (ins < 0)
        sections.push(len, ins);
      else
        sections.push(ins, len);
    }
    return new _ChangeDesc(sections);
  }
  /**
  Compute the combined effect of applying another set of changes
  after this one. The length of the document after this set should
  match the length before `other`.
  */
  composeDesc(other) {
    return this.empty ? other : other.empty ? this : composeSets(this, other);
  }
  /**
  Map this description, which should start with the same document
  as `other`, over another set of changes, so that it can be
  applied after it. When `before` is true, map as if the changes
  in `other` happened before the ones in `this`.
  */
  mapDesc(other, before = false) {
    return other.empty ? this : mapSet(this, other, before);
  }
  mapPos(pos, assoc = -1, mode = MapMode.Simple) {
    let posA = 0, posB = 0;
    for (let i = 0; i < this.sections.length; ) {
      let len = this.sections[i++], ins = this.sections[i++], endA = posA + len;
      if (ins < 0) {
        if (endA > pos)
          return posB + (pos - posA);
        posB += len;
      } else {
        if (mode != MapMode.Simple && endA >= pos && (mode == MapMode.TrackDel && posA < pos && endA > pos || mode == MapMode.TrackBefore && posA < pos || mode == MapMode.TrackAfter && endA > pos))
          return null;
        if (endA > pos || endA == pos && assoc < 0 && !len)
          return pos == posA || assoc < 0 ? posB : posB + ins;
        posB += ins;
      }
      posA = endA;
    }
    if (pos > posA)
      throw new RangeError(`Position ${pos} is out of range for changeset of length ${posA}`);
    return posB;
  }
  /**
  Check whether these changes touch a given range. When one of the
  changes entirely covers the range, the string `"cover"` is
  returned.
  */
  touchesRange(from, to = from) {
    for (let i = 0, pos = 0; i < this.sections.length && pos <= to; ) {
      let len = this.sections[i++], ins = this.sections[i++], end = pos + len;
      if (ins >= 0 && pos <= to && end >= from)
        return pos < from && end > to ? "cover" : true;
      pos = end;
    }
    return false;
  }
  /**
  @internal
  */
  toString() {
    let result = "";
    for (let i = 0; i < this.sections.length; ) {
      let len = this.sections[i++], ins = this.sections[i++];
      result += (result ? " " : "") + len + (ins >= 0 ? ":" + ins : "");
    }
    return result;
  }
  /**
  Serialize this change desc to a JSON-representable value.
  */
  toJSON() {
    return this.sections;
  }
  /**
  Create a change desc from its JSON representation (as produced
  by [`toJSON`](https://codemirror.net/6/docs/ref/#state.ChangeDesc.toJSON).
  */
  static fromJSON(json) {
    if (!Array.isArray(json) || json.length % 2 || json.some((a) => typeof a != "number"))
      throw new RangeError("Invalid JSON representation of ChangeDesc");
    return new _ChangeDesc(json);
  }
  /**
  @internal
  */
  static create(sections) {
    return new _ChangeDesc(sections);
  }
};
var ChangeSet = class _ChangeSet extends ChangeDesc {
  constructor(sections, inserted) {
    super(sections);
    this.inserted = inserted;
  }
  /**
  Apply the changes to a document, returning the modified
  document.
  */
  apply(doc) {
    if (this.length != doc.length)
      throw new RangeError("Applying change set to a document with the wrong length");
    iterChanges(this, (fromA, toA, fromB, _toB, text) => doc = doc.replace(fromB, fromB + (toA - fromA), text), false);
    return doc;
  }
  mapDesc(other, before = false) {
    return mapSet(this, other, before, true);
  }
  /**
  Given the document as it existed _before_ the changes, return a
  change set that represents the inverse of this set, which could
  be used to go from the document created by the changes back to
  the document as it existed before the changes.
  */
  invert(doc) {
    let sections = this.sections.slice(), inserted = [];
    for (let i = 0, pos = 0; i < sections.length; i += 2) {
      let len = sections[i], ins = sections[i + 1];
      if (ins >= 0) {
        sections[i] = ins;
        sections[i + 1] = len;
        let index = i >> 1;
        while (inserted.length < index)
          inserted.push(Text.empty);
        inserted.push(len ? doc.slice(pos, pos + len) : Text.empty);
      }
      pos += len;
    }
    return new _ChangeSet(sections, inserted);
  }
  /**
  Combine two subsequent change sets into a single set. `other`
  must start in the document produced by `this`. If `this` goes
  `docA` → `docB` and `other` represents `docB` → `docC`, the
  returned value will represent the change `docA` → `docC`.
  */
  compose(other) {
    return this.empty ? other : other.empty ? this : composeSets(this, other, true);
  }
  /**
  Given another change set starting in the same document, maps this
  change set over the other, producing a new change set that can be
  applied to the document produced by applying `other`. When
  `before` is `true`, order changes as if `this` comes before
  `other`, otherwise (the default) treat `other` as coming first.
  
  Given two changes `A` and `B`, `A.compose(B.map(A))` and
  `B.compose(A.map(B, true))` will produce the same document. This
  provides a basic form of [operational
  transformation](https://en.wikipedia.org/wiki/Operational_transformation),
  and can be used for collaborative editing.
  */
  map(other, before = false) {
    return other.empty ? this : mapSet(this, other, before, true);
  }
  /**
  Iterate over the changed ranges in the document, calling `f` for
  each, with the range in the original document (`fromA`-`toA`)
  and the range that replaces it in the new document
  (`fromB`-`toB`).
  
  When `individual` is true, adjacent changes are reported
  separately.
  */
  iterChanges(f, individual = false) {
    iterChanges(this, f, individual);
  }
  /**
  Get a [change description](https://codemirror.net/6/docs/ref/#state.ChangeDesc) for this change
  set.
  */
  get desc() {
    return ChangeDesc.create(this.sections);
  }
  /**
  @internal
  */
  filter(ranges) {
    let resultSections = [], resultInserted = [], filteredSections = [];
    let iter = new SectionIter(this);
    done:
      for (let i = 0, pos = 0; ; ) {
        let next = i == ranges.length ? 1e9 : ranges[i++];
        while (pos < next || pos == next && iter.len == 0) {
          if (iter.done)
            break done;
          let len = Math.min(iter.len, next - pos);
          addSection(filteredSections, len, -1);
          let ins = iter.ins == -1 ? -1 : iter.off == 0 ? iter.ins : 0;
          addSection(resultSections, len, ins);
          if (ins > 0)
            addInsert(resultInserted, resultSections, iter.text);
          iter.forward(len);
          pos += len;
        }
        let end = ranges[i++];
        while (pos < end) {
          if (iter.done)
            break done;
          let len = Math.min(iter.len, end - pos);
          addSection(resultSections, len, -1);
          addSection(filteredSections, len, iter.ins == -1 ? -1 : iter.off == 0 ? iter.ins : 0);
          iter.forward(len);
          pos += len;
        }
      }
    return {
      changes: new _ChangeSet(resultSections, resultInserted),
      filtered: ChangeDesc.create(filteredSections)
    };
  }
  /**
  Serialize this change set to a JSON-representable value.
  */
  toJSON() {
    let parts = [];
    for (let i = 0; i < this.sections.length; i += 2) {
      let len = this.sections[i], ins = this.sections[i + 1];
      if (ins < 0)
        parts.push(len);
      else if (ins == 0)
        parts.push([len]);
      else
        parts.push([len].concat(this.inserted[i >> 1].toJSON()));
    }
    return parts;
  }
  /**
  Create a change set for the given changes, for a document of the
  given length, using `lineSep` as line separator.
  */
  static of(changes, length, lineSep) {
    let sections = [], inserted = [], pos = 0;
    let total = null;
    function flush(force = false) {
      if (!force && !sections.length)
        return;
      if (pos < length)
        addSection(sections, length - pos, -1);
      let set = new _ChangeSet(sections, inserted);
      total = total ? total.compose(set.map(total)) : set;
      sections = [];
      inserted = [];
      pos = 0;
    }
    function process(spec) {
      if (Array.isArray(spec)) {
        for (let sub of spec)
          process(sub);
      } else if (spec instanceof _ChangeSet) {
        if (spec.length != length)
          throw new RangeError(`Mismatched change set length (got ${spec.length}, expected ${length})`);
        flush();
        total = total ? total.compose(spec.map(total)) : spec;
      } else {
        let { from, to = from, insert: insert2 } = spec;
        if (from > to || from < 0 || to > length)
          throw new RangeError(`Invalid change range ${from} to ${to} (in doc of length ${length})`);
        let insText = !insert2 ? Text.empty : typeof insert2 == "string" ? Text.of(insert2.split(lineSep || DefaultSplit)) : insert2;
        let insLen = insText.length;
        if (from == to && insLen == 0)
          return;
        if (from < pos)
          flush();
        if (from > pos)
          addSection(sections, from - pos, -1);
        addSection(sections, to - from, insLen);
        addInsert(inserted, sections, insText);
        pos = to;
      }
    }
    process(changes);
    flush(!total);
    return total;
  }
  /**
  Create an empty changeset of the given length.
  */
  static empty(length) {
    return new _ChangeSet(length ? [length, -1] : [], []);
  }
  /**
  Create a changeset from its JSON representation (as produced by
  [`toJSON`](https://codemirror.net/6/docs/ref/#state.ChangeSet.toJSON).
  */
  static fromJSON(json) {
    if (!Array.isArray(json))
      throw new RangeError("Invalid JSON representation of ChangeSet");
    let sections = [], inserted = [];
    for (let i = 0; i < json.length; i++) {
      let part = json[i];
      if (typeof part == "number") {
        sections.push(part, -1);
      } else if (!Array.isArray(part) || typeof part[0] != "number" || part.some((e, i2) => i2 && typeof e != "string")) {
        throw new RangeError("Invalid JSON representation of ChangeSet");
      } else if (part.length == 1) {
        sections.push(part[0], 0);
      } else {
        while (inserted.length < i)
          inserted.push(Text.empty);
        inserted[i] = Text.of(part.slice(1));
        sections.push(part[0], inserted[i].length);
      }
    }
    return new _ChangeSet(sections, inserted);
  }
  /**
  @internal
  */
  static createSet(sections, inserted) {
    return new _ChangeSet(sections, inserted);
  }
};
function addSection(sections, len, ins, forceJoin = false) {
  if (len == 0 && ins <= 0)
    return;
  let last = sections.length - 2;
  if (last >= 0 && ins <= 0 && ins == sections[last + 1])
    sections[last] += len;
  else if (len == 0 && sections[last] == 0)
    sections[last + 1] += ins;
  else if (forceJoin) {
    sections[last] += len;
    sections[last + 1] += ins;
  } else
    sections.push(len, ins);
}
function addInsert(values, sections, value) {
  if (value.length == 0)
    return;
  let index = sections.length - 2 >> 1;
  if (index < values.length) {
    values[values.length - 1] = values[values.length - 1].append(value);
  } else {
    while (values.length < index)
      values.push(Text.empty);
    values.push(value);
  }
}
function iterChanges(desc, f, individual) {
  let inserted = desc.inserted;
  for (let posA = 0, posB = 0, i = 0; i < desc.sections.length; ) {
    let len = desc.sections[i++], ins = desc.sections[i++];
    if (ins < 0) {
      posA += len;
      posB += len;
    } else {
      let endA = posA, endB = posB, text = Text.empty;
      for (; ; ) {
        endA += len;
        endB += ins;
        if (ins && inserted)
          text = text.append(inserted[i - 2 >> 1]);
        if (individual || i == desc.sections.length || desc.sections[i + 1] < 0)
          break;
        len = desc.sections[i++];
        ins = desc.sections[i++];
      }
      f(posA, endA, posB, endB, text);
      posA = endA;
      posB = endB;
    }
  }
}
function mapSet(setA, setB, before, mkSet = false) {
  let sections = [], insert2 = mkSet ? [] : null;
  let a = new SectionIter(setA), b = new SectionIter(setB);
  for (let inserted = -1; ; ) {
    if (a.ins == -1 && b.ins == -1) {
      let len = Math.min(a.len, b.len);
      addSection(sections, len, -1);
      a.forward(len);
      b.forward(len);
    } else if (b.ins >= 0 && (a.ins < 0 || inserted == a.i || a.off == 0 && (b.len < a.len || b.len == a.len && !before))) {
      let len = b.len;
      addSection(sections, b.ins, -1);
      while (len) {
        let piece = Math.min(a.len, len);
        if (a.ins >= 0 && inserted < a.i && a.len <= piece) {
          addSection(sections, 0, a.ins);
          if (insert2)
            addInsert(insert2, sections, a.text);
          inserted = a.i;
        }
        a.forward(piece);
        len -= piece;
      }
      b.next();
    } else if (a.ins >= 0) {
      let len = 0, left = a.len;
      while (left) {
        if (b.ins == -1) {
          let piece = Math.min(left, b.len);
          len += piece;
          left -= piece;
          b.forward(piece);
        } else if (b.ins == 0 && b.len < left) {
          left -= b.len;
          b.next();
        } else {
          break;
        }
      }
      addSection(sections, len, inserted < a.i ? a.ins : 0);
      if (insert2 && inserted < a.i)
        addInsert(insert2, sections, a.text);
      inserted = a.i;
      a.forward(a.len - left);
    } else if (a.done && b.done) {
      return insert2 ? ChangeSet.createSet(sections, insert2) : ChangeDesc.create(sections);
    } else {
      throw new Error("Mismatched change set lengths");
    }
  }
}
function composeSets(setA, setB, mkSet = false) {
  let sections = [];
  let insert2 = mkSet ? [] : null;
  let a = new SectionIter(setA), b = new SectionIter(setB);
  for (let open = false; ; ) {
    if (a.done && b.done) {
      return insert2 ? ChangeSet.createSet(sections, insert2) : ChangeDesc.create(sections);
    } else if (a.ins == 0) {
      addSection(sections, a.len, 0, open);
      a.next();
    } else if (b.len == 0 && !b.done) {
      addSection(sections, 0, b.ins, open);
      if (insert2)
        addInsert(insert2, sections, b.text);
      b.next();
    } else if (a.done || b.done) {
      throw new Error("Mismatched change set lengths");
    } else {
      let len = Math.min(a.len2, b.len), sectionLen = sections.length;
      if (a.ins == -1) {
        let insB = b.ins == -1 ? -1 : b.off ? 0 : b.ins;
        addSection(sections, len, insB, open);
        if (insert2 && insB)
          addInsert(insert2, sections, b.text);
      } else if (b.ins == -1) {
        addSection(sections, a.off ? 0 : a.len, len, open);
        if (insert2)
          addInsert(insert2, sections, a.textBit(len));
      } else {
        addSection(sections, a.off ? 0 : a.len, b.off ? 0 : b.ins, open);
        if (insert2 && !b.off)
          addInsert(insert2, sections, b.text);
      }
      open = (a.ins > len || b.ins >= 0 && b.len > len) && (open || sections.length > sectionLen);
      a.forward2(len);
      b.forward(len);
    }
  }
}
var SectionIter = class {
  constructor(set) {
    this.set = set;
    this.i = 0;
    this.next();
  }
  next() {
    let { sections } = this.set;
    if (this.i < sections.length) {
      this.len = sections[this.i++];
      this.ins = sections[this.i++];
    } else {
      this.len = 0;
      this.ins = -2;
    }
    this.off = 0;
  }
  get done() {
    return this.ins == -2;
  }
  get len2() {
    return this.ins < 0 ? this.len : this.ins;
  }
  get text() {
    let { inserted } = this.set, index = this.i - 2 >> 1;
    return index >= inserted.length ? Text.empty : inserted[index];
  }
  textBit(len) {
    let { inserted } = this.set, index = this.i - 2 >> 1;
    return index >= inserted.length && !len ? Text.empty : inserted[index].slice(this.off, len == null ? void 0 : this.off + len);
  }
  forward(len) {
    if (len == this.len)
      this.next();
    else {
      this.len -= len;
      this.off += len;
    }
  }
  forward2(len) {
    if (this.ins == -1)
      this.forward(len);
    else if (len == this.ins)
      this.next();
    else {
      this.ins -= len;
      this.off += len;
    }
  }
};
var SelectionRange = class _SelectionRange {
  constructor(from, to, flags) {
    this.from = from;
    this.to = to;
    this.flags = flags;
  }
  /**
  The anchor of the range—the side that doesn't move when you
  extend it.
  */
  get anchor() {
    return this.flags & 16 ? this.to : this.from;
  }
  /**
  The head of the range, which is moved when the range is
  [extended](https://codemirror.net/6/docs/ref/#state.SelectionRange.extend).
  */
  get head() {
    return this.flags & 16 ? this.from : this.to;
  }
  /**
  True when `anchor` and `head` are at the same position.
  */
  get empty() {
    return this.from == this.to;
  }
  /**
  If this is a cursor that is explicitly associated with the
  character on one of its sides, this returns the side. -1 means
  the character before its position, 1 the character after, and 0
  means no association.
  */
  get assoc() {
    return this.flags & 4 ? -1 : this.flags & 8 ? 1 : 0;
  }
  /**
  The bidirectional text level associated with this cursor, if
  any.
  */
  get bidiLevel() {
    let level = this.flags & 3;
    return level == 3 ? null : level;
  }
  /**
  The goal column (stored vertical offset) associated with a
  cursor. This is used to preserve the vertical position when
  [moving](https://codemirror.net/6/docs/ref/#view.EditorView.moveVertically) across
  lines of different length.
  */
  get goalColumn() {
    let value = this.flags >> 5;
    return value == 33554431 ? void 0 : value;
  }
  /**
  Map this range through a change, producing a valid range in the
  updated document.
  */
  map(change, assoc = -1) {
    let from, to;
    if (this.empty) {
      from = to = change.mapPos(this.from, assoc);
    } else {
      from = change.mapPos(this.from, 1);
      to = change.mapPos(this.to, -1);
    }
    return from == this.from && to == this.to ? this : new _SelectionRange(from, to, this.flags);
  }
  /**
  Extend this range to cover at least `from` to `to`.
  */
  extend(from, to = from) {
    if (from <= this.anchor && to >= this.anchor)
      return EditorSelection.range(from, to);
    let head = Math.abs(from - this.anchor) > Math.abs(to - this.anchor) ? from : to;
    return EditorSelection.range(this.anchor, head);
  }
  /**
  Compare this range to another range.
  */
  eq(other) {
    return this.anchor == other.anchor && this.head == other.head;
  }
  /**
  Return a JSON-serializable object representing the range.
  */
  toJSON() {
    return { anchor: this.anchor, head: this.head };
  }
  /**
  Convert a JSON representation of a range to a `SelectionRange`
  instance.
  */
  static fromJSON(json) {
    if (!json || typeof json.anchor != "number" || typeof json.head != "number")
      throw new RangeError("Invalid JSON representation for SelectionRange");
    return EditorSelection.range(json.anchor, json.head);
  }
  /**
  @internal
  */
  static create(from, to, flags) {
    return new _SelectionRange(from, to, flags);
  }
};
var EditorSelection = class _EditorSelection {
  constructor(ranges, mainIndex) {
    this.ranges = ranges;
    this.mainIndex = mainIndex;
  }
  /**
  Map a selection through a change. Used to adjust the selection
  position for changes.
  */
  map(change, assoc = -1) {
    if (change.empty)
      return this;
    return _EditorSelection.create(this.ranges.map((r) => r.map(change, assoc)), this.mainIndex);
  }
  /**
  Compare this selection to another selection.
  */
  eq(other) {
    if (this.ranges.length != other.ranges.length || this.mainIndex != other.mainIndex)
      return false;
    for (let i = 0; i < this.ranges.length; i++)
      if (!this.ranges[i].eq(other.ranges[i]))
        return false;
    return true;
  }
  /**
  Get the primary selection range. Usually, you should make sure
  your code applies to _all_ ranges, by using methods like
  [`changeByRange`](https://codemirror.net/6/docs/ref/#state.EditorState.changeByRange).
  */
  get main() {
    return this.ranges[this.mainIndex];
  }
  /**
  Make sure the selection only has one range. Returns a selection
  holding only the main range from this selection.
  */
  asSingle() {
    return this.ranges.length == 1 ? this : new _EditorSelection([this.main], 0);
  }
  /**
  Extend this selection with an extra range.
  */
  addRange(range, main = true) {
    return _EditorSelection.create([range].concat(this.ranges), main ? 0 : this.mainIndex + 1);
  }
  /**
  Replace a given range with another range, and then normalize the
  selection to merge and sort ranges if necessary.
  */
  replaceRange(range, which = this.mainIndex) {
    let ranges = this.ranges.slice();
    ranges[which] = range;
    return _EditorSelection.create(ranges, this.mainIndex);
  }
  /**
  Convert this selection to an object that can be serialized to
  JSON.
  */
  toJSON() {
    return { ranges: this.ranges.map((r) => r.toJSON()), main: this.mainIndex };
  }
  /**
  Create a selection from a JSON representation.
  */
  static fromJSON(json) {
    if (!json || !Array.isArray(json.ranges) || typeof json.main != "number" || json.main >= json.ranges.length)
      throw new RangeError("Invalid JSON representation for EditorSelection");
    return new _EditorSelection(json.ranges.map((r) => SelectionRange.fromJSON(r)), json.main);
  }
  /**
  Create a selection holding a single range.
  */
  static single(anchor, head = anchor) {
    return new _EditorSelection([_EditorSelection.range(anchor, head)], 0);
  }
  /**
  Sort and merge the given set of ranges, creating a valid
  selection.
  */
  static create(ranges, mainIndex = 0) {
    if (ranges.length == 0)
      throw new RangeError("A selection needs at least one range");
    for (let pos = 0, i = 0; i < ranges.length; i++) {
      let range = ranges[i];
      if (range.empty ? range.from <= pos : range.from < pos)
        return _EditorSelection.normalized(ranges.slice(), mainIndex);
      pos = range.to;
    }
    return new _EditorSelection(ranges, mainIndex);
  }
  /**
  Create a cursor selection range at the given position. You can
  safely ignore the optional arguments in most situations.
  */
  static cursor(pos, assoc = 0, bidiLevel, goalColumn) {
    return SelectionRange.create(pos, pos, (assoc == 0 ? 0 : assoc < 0 ? 4 : 8) | (bidiLevel == null ? 3 : Math.min(2, bidiLevel)) | (goalColumn !== null && goalColumn !== void 0 ? goalColumn : 33554431) << 5);
  }
  /**
  Create a selection range.
  */
  static range(anchor, head, goalColumn, bidiLevel) {
    let flags = (goalColumn !== null && goalColumn !== void 0 ? goalColumn : 33554431) << 5 | (bidiLevel == null ? 3 : Math.min(2, bidiLevel));
    return head < anchor ? SelectionRange.create(head, anchor, 16 | 8 | flags) : SelectionRange.create(anchor, head, (head > anchor ? 4 : 0) | flags);
  }
  /**
  @internal
  */
  static normalized(ranges, mainIndex = 0) {
    let main = ranges[mainIndex];
    ranges.sort((a, b) => a.from - b.from);
    mainIndex = ranges.indexOf(main);
    for (let i = 1; i < ranges.length; i++) {
      let range = ranges[i], prev = ranges[i - 1];
      if (range.empty ? range.from <= prev.to : range.from < prev.to) {
        let from = prev.from, to = Math.max(range.to, prev.to);
        if (i <= mainIndex)
          mainIndex--;
        ranges.splice(--i, 2, range.anchor > range.head ? _EditorSelection.range(to, from) : _EditorSelection.range(from, to));
      }
    }
    return new _EditorSelection(ranges, mainIndex);
  }
};
function checkSelection(selection, docLength) {
  for (let range of selection.ranges)
    if (range.to > docLength)
      throw new RangeError("Selection points outside of document");
}
var nextID = 0;
var Facet = class _Facet {
  constructor(combine, compareInput, compare2, isStatic, enables) {
    this.combine = combine;
    this.compareInput = compareInput;
    this.compare = compare2;
    this.isStatic = isStatic;
    this.id = nextID++;
    this.default = combine([]);
    this.extensions = typeof enables == "function" ? enables(this) : enables;
  }
  /**
  Define a new facet.
  */
  static define(config = {}) {
    return new _Facet(config.combine || ((a) => a), config.compareInput || ((a, b) => a === b), config.compare || (!config.combine ? sameArray : (a, b) => a === b), !!config.static, config.enables);
  }
  /**
  Returns an extension that adds the given value to this facet.
  */
  of(value) {
    return new FacetProvider([], this, 0, value);
  }
  /**
  Create an extension that computes a value for the facet from a
  state. You must take care to declare the parts of the state that
  this value depends on, since your function is only called again
  for a new state when one of those parts changed.
  
  In cases where your value depends only on a single field, you'll
  want to use the [`from`](https://codemirror.net/6/docs/ref/#state.Facet.from) method instead.
  */
  compute(deps, get) {
    if (this.isStatic)
      throw new Error("Can't compute a static facet");
    return new FacetProvider(deps, this, 1, get);
  }
  /**
  Create an extension that computes zero or more values for this
  facet from a state.
  */
  computeN(deps, get) {
    if (this.isStatic)
      throw new Error("Can't compute a static facet");
    return new FacetProvider(deps, this, 2, get);
  }
  from(field, get) {
    if (!get)
      get = (x) => x;
    return this.compute([field], (state) => get(state.field(field)));
  }
};
function sameArray(a, b) {
  return a == b || a.length == b.length && a.every((e, i) => e === b[i]);
}
var FacetProvider = class {
  constructor(dependencies, facet, type, value) {
    this.dependencies = dependencies;
    this.facet = facet;
    this.type = type;
    this.value = value;
    this.id = nextID++;
  }
  dynamicSlot(addresses) {
    var _a;
    let getter = this.value;
    let compare2 = this.facet.compareInput;
    let id = this.id, idx = addresses[id] >> 1, multi = this.type == 2;
    let depDoc = false, depSel = false, depAddrs = [];
    for (let dep of this.dependencies) {
      if (dep == "doc")
        depDoc = true;
      else if (dep == "selection")
        depSel = true;
      else if ((((_a = addresses[dep.id]) !== null && _a !== void 0 ? _a : 1) & 1) == 0)
        depAddrs.push(addresses[dep.id]);
    }
    return {
      create(state) {
        state.values[idx] = getter(state);
        return 1;
      },
      update(state, tr) {
        if (depDoc && tr.docChanged || depSel && (tr.docChanged || tr.selection) || ensureAll(state, depAddrs)) {
          let newVal = getter(state);
          if (multi ? !compareArray(newVal, state.values[idx], compare2) : !compare2(newVal, state.values[idx])) {
            state.values[idx] = newVal;
            return 1;
          }
        }
        return 0;
      },
      reconfigure: (state, oldState) => {
        let newVal, oldAddr = oldState.config.address[id];
        if (oldAddr != null) {
          let oldVal = getAddr(oldState, oldAddr);
          if (this.dependencies.every((dep) => {
            return dep instanceof Facet ? oldState.facet(dep) === state.facet(dep) : dep instanceof StateField ? oldState.field(dep, false) == state.field(dep, false) : true;
          }) || (multi ? compareArray(newVal = getter(state), oldVal, compare2) : compare2(newVal = getter(state), oldVal))) {
            state.values[idx] = oldVal;
            return 0;
          }
        } else {
          newVal = getter(state);
        }
        state.values[idx] = newVal;
        return 1;
      }
    };
  }
};
function compareArray(a, b, compare2) {
  if (a.length != b.length)
    return false;
  for (let i = 0; i < a.length; i++)
    if (!compare2(a[i], b[i]))
      return false;
  return true;
}
function ensureAll(state, addrs) {
  let changed = false;
  for (let addr of addrs)
    if (ensureAddr(state, addr) & 1)
      changed = true;
  return changed;
}
function dynamicFacetSlot(addresses, facet, providers) {
  let providerAddrs = providers.map((p) => addresses[p.id]);
  let providerTypes = providers.map((p) => p.type);
  let dynamic = providerAddrs.filter((p) => !(p & 1));
  let idx = addresses[facet.id] >> 1;
  function get(state) {
    let values = [];
    for (let i = 0; i < providerAddrs.length; i++) {
      let value = getAddr(state, providerAddrs[i]);
      if (providerTypes[i] == 2)
        for (let val of value)
          values.push(val);
      else
        values.push(value);
    }
    return facet.combine(values);
  }
  return {
    create(state) {
      for (let addr of providerAddrs)
        ensureAddr(state, addr);
      state.values[idx] = get(state);
      return 1;
    },
    update(state, tr) {
      if (!ensureAll(state, dynamic))
        return 0;
      let value = get(state);
      if (facet.compare(value, state.values[idx]))
        return 0;
      state.values[idx] = value;
      return 1;
    },
    reconfigure(state, oldState) {
      let depChanged = ensureAll(state, providerAddrs);
      let oldProviders = oldState.config.facets[facet.id], oldValue = oldState.facet(facet);
      if (oldProviders && !depChanged && sameArray(providers, oldProviders)) {
        state.values[idx] = oldValue;
        return 0;
      }
      let value = get(state);
      if (facet.compare(value, oldValue)) {
        state.values[idx] = oldValue;
        return 0;
      }
      state.values[idx] = value;
      return 1;
    }
  };
}
var initField = Facet.define({ static: true });
var StateField = class _StateField {
  constructor(id, createF, updateF, compareF, spec) {
    this.id = id;
    this.createF = createF;
    this.updateF = updateF;
    this.compareF = compareF;
    this.spec = spec;
    this.provides = void 0;
  }
  /**
  Define a state field.
  */
  static define(config) {
    let field = new _StateField(nextID++, config.create, config.update, config.compare || ((a, b) => a === b), config);
    if (config.provide)
      field.provides = config.provide(field);
    return field;
  }
  create(state) {
    let init = state.facet(initField).find((i) => i.field == this);
    return ((init === null || init === void 0 ? void 0 : init.create) || this.createF)(state);
  }
  /**
  @internal
  */
  slot(addresses) {
    let idx = addresses[this.id] >> 1;
    return {
      create: (state) => {
        state.values[idx] = this.create(state);
        return 1;
      },
      update: (state, tr) => {
        let oldVal = state.values[idx];
        let value = this.updateF(oldVal, tr);
        if (this.compareF(oldVal, value))
          return 0;
        state.values[idx] = value;
        return 1;
      },
      reconfigure: (state, oldState) => {
        if (oldState.config.address[this.id] != null) {
          state.values[idx] = oldState.field(this);
          return 0;
        }
        state.values[idx] = this.create(state);
        return 1;
      }
    };
  }
  /**
  Returns an extension that enables this field and overrides the
  way it is initialized. Can be useful when you need to provide a
  non-default starting value for the field.
  */
  init(create) {
    return [this, initField.of({ field: this, create })];
  }
  /**
  State field instances can be used as
  [`Extension`](https://codemirror.net/6/docs/ref/#state.Extension) values to enable the field in a
  given state.
  */
  get extension() {
    return this;
  }
};
var Prec_ = { lowest: 4, low: 3, default: 2, high: 1, highest: 0 };
function prec(value) {
  return (ext) => new PrecExtension(ext, value);
}
var Prec = {
  /**
  The highest precedence level, for extensions that should end up
  near the start of the precedence ordering.
  */
  highest: prec(Prec_.highest),
  /**
  A higher-than-default precedence, for extensions that should
  come before those with default precedence.
  */
  high: prec(Prec_.high),
  /**
  The default precedence, which is also used for extensions
  without an explicit precedence.
  */
  default: prec(Prec_.default),
  /**
  A lower-than-default precedence.
  */
  low: prec(Prec_.low),
  /**
  The lowest precedence level. Meant for things that should end up
  near the end of the extension order.
  */
  lowest: prec(Prec_.lowest)
};
var PrecExtension = class {
  constructor(inner, prec2) {
    this.inner = inner;
    this.prec = prec2;
  }
};
var Compartment = class _Compartment {
  /**
  Create an instance of this compartment to add to your [state
  configuration](https://codemirror.net/6/docs/ref/#state.EditorStateConfig.extensions).
  */
  of(ext) {
    return new CompartmentInstance(this, ext);
  }
  /**
  Create an [effect](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects) that
  reconfigures this compartment.
  */
  reconfigure(content) {
    return _Compartment.reconfigure.of({ compartment: this, extension: content });
  }
  /**
  Get the current content of the compartment in the state, or
  `undefined` if it isn't present.
  */
  get(state) {
    return state.config.compartments.get(this);
  }
};
var CompartmentInstance = class {
  constructor(compartment, inner) {
    this.compartment = compartment;
    this.inner = inner;
  }
};
var Configuration = class _Configuration {
  constructor(base, compartments, dynamicSlots, address, staticValues, facets) {
    this.base = base;
    this.compartments = compartments;
    this.dynamicSlots = dynamicSlots;
    this.address = address;
    this.staticValues = staticValues;
    this.facets = facets;
    this.statusTemplate = [];
    while (this.statusTemplate.length < dynamicSlots.length)
      this.statusTemplate.push(
        0
        /* SlotStatus.Unresolved */
      );
  }
  staticFacet(facet) {
    let addr = this.address[facet.id];
    return addr == null ? facet.default : this.staticValues[addr >> 1];
  }
  static resolve(base, compartments, oldState) {
    let fields = [];
    let facets = /* @__PURE__ */ Object.create(null);
    let newCompartments = /* @__PURE__ */ new Map();
    for (let ext of flatten(base, compartments, newCompartments)) {
      if (ext instanceof StateField)
        fields.push(ext);
      else
        (facets[ext.facet.id] || (facets[ext.facet.id] = [])).push(ext);
    }
    let address = /* @__PURE__ */ Object.create(null);
    let staticValues = [];
    let dynamicSlots = [];
    for (let field of fields) {
      address[field.id] = dynamicSlots.length << 1;
      dynamicSlots.push((a) => field.slot(a));
    }
    let oldFacets = oldState === null || oldState === void 0 ? void 0 : oldState.config.facets;
    for (let id in facets) {
      let providers = facets[id], facet = providers[0].facet;
      let oldProviders = oldFacets && oldFacets[id] || [];
      if (providers.every(
        (p) => p.type == 0
        /* Provider.Static */
      )) {
        address[facet.id] = staticValues.length << 1 | 1;
        if (sameArray(oldProviders, providers)) {
          staticValues.push(oldState.facet(facet));
        } else {
          let value = facet.combine(providers.map((p) => p.value));
          staticValues.push(oldState && facet.compare(value, oldState.facet(facet)) ? oldState.facet(facet) : value);
        }
      } else {
        for (let p of providers) {
          if (p.type == 0) {
            address[p.id] = staticValues.length << 1 | 1;
            staticValues.push(p.value);
          } else {
            address[p.id] = dynamicSlots.length << 1;
            dynamicSlots.push((a) => p.dynamicSlot(a));
          }
        }
        address[facet.id] = dynamicSlots.length << 1;
        dynamicSlots.push((a) => dynamicFacetSlot(a, facet, providers));
      }
    }
    let dynamic = dynamicSlots.map((f) => f(address));
    return new _Configuration(base, newCompartments, dynamic, address, staticValues, facets);
  }
};
function flatten(extension, compartments, newCompartments) {
  let result = [[], [], [], [], []];
  let seen = /* @__PURE__ */ new Map();
  function inner(ext, prec2) {
    let known = seen.get(ext);
    if (known != null) {
      if (known <= prec2)
        return;
      let found = result[known].indexOf(ext);
      if (found > -1)
        result[known].splice(found, 1);
      if (ext instanceof CompartmentInstance)
        newCompartments.delete(ext.compartment);
    }
    seen.set(ext, prec2);
    if (Array.isArray(ext)) {
      for (let e of ext)
        inner(e, prec2);
    } else if (ext instanceof CompartmentInstance) {
      if (newCompartments.has(ext.compartment))
        throw new RangeError(`Duplicate use of compartment in extensions`);
      let content = compartments.get(ext.compartment) || ext.inner;
      newCompartments.set(ext.compartment, content);
      inner(content, prec2);
    } else if (ext instanceof PrecExtension) {
      inner(ext.inner, ext.prec);
    } else if (ext instanceof StateField) {
      result[prec2].push(ext);
      if (ext.provides)
        inner(ext.provides, prec2);
    } else if (ext instanceof FacetProvider) {
      result[prec2].push(ext);
      if (ext.facet.extensions)
        inner(ext.facet.extensions, Prec_.default);
    } else {
      let content = ext.extension;
      if (!content)
        throw new Error(`Unrecognized extension value in extension set (${ext}). This sometimes happens because multiple instances of @codemirror/state are loaded, breaking instanceof checks.`);
      inner(content, prec2);
    }
  }
  inner(extension, Prec_.default);
  return result.reduce((a, b) => a.concat(b));
}
function ensureAddr(state, addr) {
  if (addr & 1)
    return 2;
  let idx = addr >> 1;
  let status = state.status[idx];
  if (status == 4)
    throw new Error("Cyclic dependency between fields and/or facets");
  if (status & 2)
    return status;
  state.status[idx] = 4;
  let changed = state.computeSlot(state, state.config.dynamicSlots[idx]);
  return state.status[idx] = 2 | changed;
}
function getAddr(state, addr) {
  return addr & 1 ? state.config.staticValues[addr >> 1] : state.values[addr >> 1];
}
var languageData = Facet.define();
var allowMultipleSelections = Facet.define({
  combine: (values) => values.some((v) => v),
  static: true
});
var lineSeparator = Facet.define({
  combine: (values) => values.length ? values[0] : void 0,
  static: true
});
var changeFilter = Facet.define();
var transactionFilter = Facet.define();
var transactionExtender = Facet.define();
var readOnly = Facet.define({
  combine: (values) => values.length ? values[0] : false
});
var Annotation = class {
  /**
  @internal
  */
  constructor(type, value) {
    this.type = type;
    this.value = value;
  }
  /**
  Define a new type of annotation.
  */
  static define() {
    return new AnnotationType();
  }
};
var AnnotationType = class {
  /**
  Create an instance of this annotation.
  */
  of(value) {
    return new Annotation(this, value);
  }
};
var StateEffectType = class {
  /**
  @internal
  */
  constructor(map) {
    this.map = map;
  }
  /**
  Create a [state effect](https://codemirror.net/6/docs/ref/#state.StateEffect) instance of this
  type.
  */
  of(value) {
    return new StateEffect(this, value);
  }
};
var StateEffect = class _StateEffect {
  /**
  @internal
  */
  constructor(type, value) {
    this.type = type;
    this.value = value;
  }
  /**
  Map this effect through a position mapping. Will return
  `undefined` when that ends up deleting the effect.
  */
  map(mapping) {
    let mapped = this.type.map(this.value, mapping);
    return mapped === void 0 ? void 0 : mapped == this.value ? this : new _StateEffect(this.type, mapped);
  }
  /**
  Tells you whether this effect object is of a given
  [type](https://codemirror.net/6/docs/ref/#state.StateEffectType).
  */
  is(type) {
    return this.type == type;
  }
  /**
  Define a new effect type. The type parameter indicates the type
  of values that his effect holds. It should be a type that
  doesn't include `undefined`, since that is used in
  [mapping](https://codemirror.net/6/docs/ref/#state.StateEffect.map) to indicate that an effect is
  removed.
  */
  static define(spec = {}) {
    return new StateEffectType(spec.map || ((v) => v));
  }
  /**
  Map an array of effects through a change set.
  */
  static mapEffects(effects, mapping) {
    if (!effects.length)
      return effects;
    let result = [];
    for (let effect of effects) {
      let mapped = effect.map(mapping);
      if (mapped)
        result.push(mapped);
    }
    return result;
  }
};
StateEffect.reconfigure = StateEffect.define();
StateEffect.appendConfig = StateEffect.define();
var Transaction = class _Transaction {
  constructor(startState, changes, selection, effects, annotations, scrollIntoView) {
    this.startState = startState;
    this.changes = changes;
    this.selection = selection;
    this.effects = effects;
    this.annotations = annotations;
    this.scrollIntoView = scrollIntoView;
    this._doc = null;
    this._state = null;
    if (selection)
      checkSelection(selection, changes.newLength);
    if (!annotations.some((a) => a.type == _Transaction.time))
      this.annotations = annotations.concat(_Transaction.time.of(Date.now()));
  }
  /**
  @internal
  */
  static create(startState, changes, selection, effects, annotations, scrollIntoView) {
    return new _Transaction(startState, changes, selection, effects, annotations, scrollIntoView);
  }
  /**
  The new document produced by the transaction. Contrary to
  [`.state`](https://codemirror.net/6/docs/ref/#state.Transaction.state)`.doc`, accessing this won't
  force the entire new state to be computed right away, so it is
  recommended that [transaction
  filters](https://codemirror.net/6/docs/ref/#state.EditorState^transactionFilter) use this getter
  when they need to look at the new document.
  */
  get newDoc() {
    return this._doc || (this._doc = this.changes.apply(this.startState.doc));
  }
  /**
  The new selection produced by the transaction. If
  [`this.selection`](https://codemirror.net/6/docs/ref/#state.Transaction.selection) is undefined,
  this will [map](https://codemirror.net/6/docs/ref/#state.EditorSelection.map) the start state's
  current selection through the changes made by the transaction.
  */
  get newSelection() {
    return this.selection || this.startState.selection.map(this.changes);
  }
  /**
  The new state created by the transaction. Computed on demand
  (but retained for subsequent access), so it is recommended not to
  access it in [transaction
  filters](https://codemirror.net/6/docs/ref/#state.EditorState^transactionFilter) when possible.
  */
  get state() {
    if (!this._state)
      this.startState.applyTransaction(this);
    return this._state;
  }
  /**
  Get the value of the given annotation type, if any.
  */
  annotation(type) {
    for (let ann of this.annotations)
      if (ann.type == type)
        return ann.value;
    return void 0;
  }
  /**
  Indicates whether the transaction changed the document.
  */
  get docChanged() {
    return !this.changes.empty;
  }
  /**
  Indicates whether this transaction reconfigures the state
  (through a [configuration compartment](https://codemirror.net/6/docs/ref/#state.Compartment) or
  with a top-level configuration
  [effect](https://codemirror.net/6/docs/ref/#state.StateEffect^reconfigure).
  */
  get reconfigured() {
    return this.startState.config != this.state.config;
  }
  /**
  Returns true if the transaction has a [user
  event](https://codemirror.net/6/docs/ref/#state.Transaction^userEvent) annotation that is equal to
  or more specific than `event`. For example, if the transaction
  has `"select.pointer"` as user event, `"select"` and
  `"select.pointer"` will match it.
  */
  isUserEvent(event) {
    let e = this.annotation(_Transaction.userEvent);
    return !!(e && (e == event || e.length > event.length && e.slice(0, event.length) == event && e[event.length] == "."));
  }
};
Transaction.time = Annotation.define();
Transaction.userEvent = Annotation.define();
Transaction.addToHistory = Annotation.define();
Transaction.remote = Annotation.define();
function joinRanges(a, b) {
  let result = [];
  for (let iA = 0, iB = 0; ; ) {
    let from, to;
    if (iA < a.length && (iB == b.length || b[iB] >= a[iA])) {
      from = a[iA++];
      to = a[iA++];
    } else if (iB < b.length) {
      from = b[iB++];
      to = b[iB++];
    } else
      return result;
    if (!result.length || result[result.length - 1] < from)
      result.push(from, to);
    else if (result[result.length - 1] < to)
      result[result.length - 1] = to;
  }
}
function mergeTransaction(a, b, sequential) {
  var _a;
  let mapForA, mapForB, changes;
  if (sequential) {
    mapForA = b.changes;
    mapForB = ChangeSet.empty(b.changes.length);
    changes = a.changes.compose(b.changes);
  } else {
    mapForA = b.changes.map(a.changes);
    mapForB = a.changes.mapDesc(b.changes, true);
    changes = a.changes.compose(mapForA);
  }
  return {
    changes,
    selection: b.selection ? b.selection.map(mapForB) : (_a = a.selection) === null || _a === void 0 ? void 0 : _a.map(mapForA),
    effects: StateEffect.mapEffects(a.effects, mapForA).concat(StateEffect.mapEffects(b.effects, mapForB)),
    annotations: a.annotations.length ? a.annotations.concat(b.annotations) : b.annotations,
    scrollIntoView: a.scrollIntoView || b.scrollIntoView
  };
}
function resolveTransactionInner(state, spec, docSize) {
  let sel = spec.selection, annotations = asArray(spec.annotations);
  if (spec.userEvent)
    annotations = annotations.concat(Transaction.userEvent.of(spec.userEvent));
  return {
    changes: spec.changes instanceof ChangeSet ? spec.changes : ChangeSet.of(spec.changes || [], docSize, state.facet(lineSeparator)),
    selection: sel && (sel instanceof EditorSelection ? sel : EditorSelection.single(sel.anchor, sel.head)),
    effects: asArray(spec.effects),
    annotations,
    scrollIntoView: !!spec.scrollIntoView
  };
}
function resolveTransaction(state, specs, filter) {
  let s = resolveTransactionInner(state, specs.length ? specs[0] : {}, state.doc.length);
  if (specs.length && specs[0].filter === false)
    filter = false;
  for (let i = 1; i < specs.length; i++) {
    if (specs[i].filter === false)
      filter = false;
    let seq = !!specs[i].sequential;
    s = mergeTransaction(s, resolveTransactionInner(state, specs[i], seq ? s.changes.newLength : state.doc.length), seq);
  }
  let tr = Transaction.create(state, s.changes, s.selection, s.effects, s.annotations, s.scrollIntoView);
  return extendTransaction(filter ? filterTransaction(tr) : tr);
}
function filterTransaction(tr) {
  let state = tr.startState;
  let result = true;
  for (let filter of state.facet(changeFilter)) {
    let value = filter(tr);
    if (value === false) {
      result = false;
      break;
    }
    if (Array.isArray(value))
      result = result === true ? value : joinRanges(result, value);
  }
  if (result !== true) {
    let changes, back;
    if (result === false) {
      back = tr.changes.invertedDesc;
      changes = ChangeSet.empty(state.doc.length);
    } else {
      let filtered = tr.changes.filter(result);
      changes = filtered.changes;
      back = filtered.filtered.mapDesc(filtered.changes).invertedDesc;
    }
    tr = Transaction.create(state, changes, tr.selection && tr.selection.map(back), StateEffect.mapEffects(tr.effects, back), tr.annotations, tr.scrollIntoView);
  }
  let filters = state.facet(transactionFilter);
  for (let i = filters.length - 1; i >= 0; i--) {
    let filtered = filters[i](tr);
    if (filtered instanceof Transaction)
      tr = filtered;
    else if (Array.isArray(filtered) && filtered.length == 1 && filtered[0] instanceof Transaction)
      tr = filtered[0];
    else
      tr = resolveTransaction(state, asArray(filtered), false);
  }
  return tr;
}
function extendTransaction(tr) {
  let state = tr.startState, extenders = state.facet(transactionExtender), spec = tr;
  for (let i = extenders.length - 1; i >= 0; i--) {
    let extension = extenders[i](tr);
    if (extension && Object.keys(extension).length)
      spec = mergeTransaction(spec, resolveTransactionInner(state, extension, tr.changes.newLength), true);
  }
  return spec == tr ? tr : Transaction.create(state, tr.changes, tr.selection, spec.effects, spec.annotations, spec.scrollIntoView);
}
var none = [];
function asArray(value) {
  return value == null ? none : Array.isArray(value) ? value : [value];
}
var CharCategory = function(CharCategory2) {
  CharCategory2[CharCategory2["Word"] = 0] = "Word";
  CharCategory2[CharCategory2["Space"] = 1] = "Space";
  CharCategory2[CharCategory2["Other"] = 2] = "Other";
  return CharCategory2;
}(CharCategory || (CharCategory = {}));
var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
var wordChar;
try {
  wordChar = new RegExp("[\\p{Alphabetic}\\p{Number}_]", "u");
} catch (_) {
}
function hasWordChar(str) {
  if (wordChar)
    return wordChar.test(str);
  for (let i = 0; i < str.length; i++) {
    let ch = str[i];
    if (/\w/.test(ch) || ch > "€" && (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)))
      return true;
  }
  return false;
}
function makeCategorizer(wordChars) {
  return (char) => {
    if (!/\S/.test(char))
      return CharCategory.Space;
    if (hasWordChar(char))
      return CharCategory.Word;
    for (let i = 0; i < wordChars.length; i++)
      if (char.indexOf(wordChars[i]) > -1)
        return CharCategory.Word;
    return CharCategory.Other;
  };
}
var EditorState = class _EditorState {
  constructor(config, doc, selection, values, computeSlot, tr) {
    this.config = config;
    this.doc = doc;
    this.selection = selection;
    this.values = values;
    this.status = config.statusTemplate.slice();
    this.computeSlot = computeSlot;
    if (tr)
      tr._state = this;
    for (let i = 0; i < this.config.dynamicSlots.length; i++)
      ensureAddr(this, i << 1);
    this.computeSlot = null;
  }
  field(field, require2 = true) {
    let addr = this.config.address[field.id];
    if (addr == null) {
      if (require2)
        throw new RangeError("Field is not present in this state");
      return void 0;
    }
    ensureAddr(this, addr);
    return getAddr(this, addr);
  }
  /**
  Create a [transaction](https://codemirror.net/6/docs/ref/#state.Transaction) that updates this
  state. Any number of [transaction specs](https://codemirror.net/6/docs/ref/#state.TransactionSpec)
  can be passed. Unless
  [`sequential`](https://codemirror.net/6/docs/ref/#state.TransactionSpec.sequential) is set, the
  [changes](https://codemirror.net/6/docs/ref/#state.TransactionSpec.changes) (if any) of each spec
  are assumed to start in the _current_ document (not the document
  produced by previous specs), and its
  [selection](https://codemirror.net/6/docs/ref/#state.TransactionSpec.selection) and
  [effects](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects) are assumed to refer
  to the document created by its _own_ changes. The resulting
  transaction contains the combined effect of all the different
  specs. For [selection](https://codemirror.net/6/docs/ref/#state.TransactionSpec.selection), later
  specs take precedence over earlier ones.
  */
  update(...specs) {
    return resolveTransaction(this, specs, true);
  }
  /**
  @internal
  */
  applyTransaction(tr) {
    let conf = this.config, { base, compartments } = conf;
    for (let effect of tr.effects) {
      if (effect.is(Compartment.reconfigure)) {
        if (conf) {
          compartments = /* @__PURE__ */ new Map();
          conf.compartments.forEach((val, key) => compartments.set(key, val));
          conf = null;
        }
        compartments.set(effect.value.compartment, effect.value.extension);
      } else if (effect.is(StateEffect.reconfigure)) {
        conf = null;
        base = effect.value;
      } else if (effect.is(StateEffect.appendConfig)) {
        conf = null;
        base = asArray(base).concat(effect.value);
      }
    }
    let startValues;
    if (!conf) {
      conf = Configuration.resolve(base, compartments, this);
      let intermediateState = new _EditorState(conf, this.doc, this.selection, conf.dynamicSlots.map(() => null), (state, slot) => slot.reconfigure(state, this), null);
      startValues = intermediateState.values;
    } else {
      startValues = tr.startState.values.slice();
    }
    new _EditorState(conf, tr.newDoc, tr.newSelection, startValues, (state, slot) => slot.update(state, tr), tr);
  }
  /**
  Create a [transaction spec](https://codemirror.net/6/docs/ref/#state.TransactionSpec) that
  replaces every selection range with the given content.
  */
  replaceSelection(text) {
    if (typeof text == "string")
      text = this.toText(text);
    return this.changeByRange((range) => ({
      changes: { from: range.from, to: range.to, insert: text },
      range: EditorSelection.cursor(range.from + text.length)
    }));
  }
  /**
  Create a set of changes and a new selection by running the given
  function for each range in the active selection. The function
  can return an optional set of changes (in the coordinate space
  of the start document), plus an updated range (in the coordinate
  space of the document produced by the call's own changes). This
  method will merge all the changes and ranges into a single
  changeset and selection, and return it as a [transaction
  spec](https://codemirror.net/6/docs/ref/#state.TransactionSpec), which can be passed to
  [`update`](https://codemirror.net/6/docs/ref/#state.EditorState.update).
  */
  changeByRange(f) {
    let sel = this.selection;
    let result1 = f(sel.ranges[0]);
    let changes = this.changes(result1.changes), ranges = [result1.range];
    let effects = asArray(result1.effects);
    for (let i = 1; i < sel.ranges.length; i++) {
      let result = f(sel.ranges[i]);
      let newChanges = this.changes(result.changes), newMapped = newChanges.map(changes);
      for (let j = 0; j < i; j++)
        ranges[j] = ranges[j].map(newMapped);
      let mapBy = changes.mapDesc(newChanges, true);
      ranges.push(result.range.map(mapBy));
      changes = changes.compose(newMapped);
      effects = StateEffect.mapEffects(effects, newMapped).concat(StateEffect.mapEffects(asArray(result.effects), mapBy));
    }
    return {
      changes,
      selection: EditorSelection.create(ranges, sel.mainIndex),
      effects
    };
  }
  /**
  Create a [change set](https://codemirror.net/6/docs/ref/#state.ChangeSet) from the given change
  description, taking the state's document length and line
  separator into account.
  */
  changes(spec = []) {
    if (spec instanceof ChangeSet)
      return spec;
    return ChangeSet.of(spec, this.doc.length, this.facet(_EditorState.lineSeparator));
  }
  /**
  Using the state's [line
  separator](https://codemirror.net/6/docs/ref/#state.EditorState^lineSeparator), create a
  [`Text`](https://codemirror.net/6/docs/ref/#state.Text) instance from the given string.
  */
  toText(string) {
    return Text.of(string.split(this.facet(_EditorState.lineSeparator) || DefaultSplit));
  }
  /**
  Return the given range of the document as a string.
  */
  sliceDoc(from = 0, to = this.doc.length) {
    return this.doc.sliceString(from, to, this.lineBreak);
  }
  /**
  Get the value of a state [facet](https://codemirror.net/6/docs/ref/#state.Facet).
  */
  facet(facet) {
    let addr = this.config.address[facet.id];
    if (addr == null)
      return facet.default;
    ensureAddr(this, addr);
    return getAddr(this, addr);
  }
  /**
  Convert this state to a JSON-serializable object. When custom
  fields should be serialized, you can pass them in as an object
  mapping property names (in the resulting object, which should
  not use `doc` or `selection`) to fields.
  */
  toJSON(fields) {
    let result = {
      doc: this.sliceDoc(),
      selection: this.selection.toJSON()
    };
    if (fields)
      for (let prop in fields) {
        let value = fields[prop];
        if (value instanceof StateField && this.config.address[value.id] != null)
          result[prop] = value.spec.toJSON(this.field(fields[prop]), this);
      }
    return result;
  }
  /**
  Deserialize a state from its JSON representation. When custom
  fields should be deserialized, pass the same object you passed
  to [`toJSON`](https://codemirror.net/6/docs/ref/#state.EditorState.toJSON) when serializing as
  third argument.
  */
  static fromJSON(json, config = {}, fields) {
    if (!json || typeof json.doc != "string")
      throw new RangeError("Invalid JSON representation for EditorState");
    let fieldInit = [];
    if (fields)
      for (let prop in fields) {
        if (Object.prototype.hasOwnProperty.call(json, prop)) {
          let field = fields[prop], value = json[prop];
          fieldInit.push(field.init((state) => field.spec.fromJSON(value, state)));
        }
      }
    return _EditorState.create({
      doc: json.doc,
      selection: EditorSelection.fromJSON(json.selection),
      extensions: config.extensions ? fieldInit.concat([config.extensions]) : fieldInit
    });
  }
  /**
  Create a new state. You'll usually only need this when
  initializing an editor—updated states are created by applying
  transactions.
  */
  static create(config = {}) {
    let configuration = Configuration.resolve(config.extensions || [], /* @__PURE__ */ new Map());
    let doc = config.doc instanceof Text ? config.doc : Text.of((config.doc || "").split(configuration.staticFacet(_EditorState.lineSeparator) || DefaultSplit));
    let selection = !config.selection ? EditorSelection.single(0) : config.selection instanceof EditorSelection ? config.selection : EditorSelection.single(config.selection.anchor, config.selection.head);
    checkSelection(selection, doc.length);
    if (!configuration.staticFacet(allowMultipleSelections))
      selection = selection.asSingle();
    return new _EditorState(configuration, doc, selection, configuration.dynamicSlots.map(() => null), (state, slot) => slot.create(state), null);
  }
  /**
  The size (in columns) of a tab in the document, determined by
  the [`tabSize`](https://codemirror.net/6/docs/ref/#state.EditorState^tabSize) facet.
  */
  get tabSize() {
    return this.facet(_EditorState.tabSize);
  }
  /**
  Get the proper [line-break](https://codemirror.net/6/docs/ref/#state.EditorState^lineSeparator)
  string for this state.
  */
  get lineBreak() {
    return this.facet(_EditorState.lineSeparator) || "\n";
  }
  /**
  Returns true when the editor is
  [configured](https://codemirror.net/6/docs/ref/#state.EditorState^readOnly) to be read-only.
  */
  get readOnly() {
    return this.facet(readOnly);
  }
  /**
  Look up a translation for the given phrase (via the
  [`phrases`](https://codemirror.net/6/docs/ref/#state.EditorState^phrases) facet), or return the
  original string if no translation is found.
  
  If additional arguments are passed, they will be inserted in
  place of markers like `$1` (for the first value) and `$2`, etc.
  A single `$` is equivalent to `$1`, and `$$` will produce a
  literal dollar sign.
  */
  phrase(phrase, ...insert2) {
    for (let map of this.facet(_EditorState.phrases))
      if (Object.prototype.hasOwnProperty.call(map, phrase)) {
        phrase = map[phrase];
        break;
      }
    if (insert2.length)
      phrase = phrase.replace(/\$(\$|\d*)/g, (m, i) => {
        if (i == "$")
          return "$";
        let n = +(i || 1);
        return !n || n > insert2.length ? m : insert2[n - 1];
      });
    return phrase;
  }
  /**
  Find the values for a given language data field, provided by the
  the [`languageData`](https://codemirror.net/6/docs/ref/#state.EditorState^languageData) facet.
  
  Examples of language data fields are...
  
  - [`"commentTokens"`](https://codemirror.net/6/docs/ref/#commands.CommentTokens) for specifying
    comment syntax.
  - [`"autocomplete"`](https://codemirror.net/6/docs/ref/#autocomplete.autocompletion^config.override)
    for providing language-specific completion sources.
  - [`"wordChars"`](https://codemirror.net/6/docs/ref/#state.EditorState.charCategorizer) for adding
    characters that should be considered part of words in this
    language.
  - [`"closeBrackets"`](https://codemirror.net/6/docs/ref/#autocomplete.CloseBracketConfig) controls
    bracket closing behavior.
  */
  languageDataAt(name, pos, side = -1) {
    let values = [];
    for (let provider of this.facet(languageData)) {
      for (let result of provider(this, pos, side)) {
        if (Object.prototype.hasOwnProperty.call(result, name))
          values.push(result[name]);
      }
    }
    return values;
  }
  /**
  Return a function that can categorize strings (expected to
  represent a single [grapheme cluster](https://codemirror.net/6/docs/ref/#state.findClusterBreak))
  into one of:
  
   - Word (contains an alphanumeric character or a character
     explicitly listed in the local language's `"wordChars"`
     language data, which should be a string)
   - Space (contains only whitespace)
   - Other (anything else)
  */
  charCategorizer(at) {
    return makeCategorizer(this.languageDataAt("wordChars", at).join(""));
  }
  /**
  Find the word at the given position, meaning the range
  containing all [word](https://codemirror.net/6/docs/ref/#state.CharCategory.Word) characters
  around it. If no word characters are adjacent to the position,
  this returns null.
  */
  wordAt(pos) {
    let { text, from, length } = this.doc.lineAt(pos);
    let cat = this.charCategorizer(pos);
    let start = pos - from, end = pos - from;
    while (start > 0) {
      let prev = findClusterBreak(text, start, false);
      if (cat(text.slice(prev, start)) != CharCategory.Word)
        break;
      start = prev;
    }
    while (end < length) {
      let next = findClusterBreak(text, end);
      if (cat(text.slice(end, next)) != CharCategory.Word)
        break;
      end = next;
    }
    return start == end ? null : EditorSelection.range(start + from, end + from);
  }
};
EditorState.allowMultipleSelections = allowMultipleSelections;
EditorState.tabSize = Facet.define({
  combine: (values) => values.length ? values[0] : 4
});
EditorState.lineSeparator = lineSeparator;
EditorState.readOnly = readOnly;
EditorState.phrases = Facet.define({
  compare(a, b) {
    let kA = Object.keys(a), kB = Object.keys(b);
    return kA.length == kB.length && kA.every((k) => a[k] == b[k]);
  }
});
EditorState.languageData = languageData;
EditorState.changeFilter = changeFilter;
EditorState.transactionFilter = transactionFilter;
EditorState.transactionExtender = transactionExtender;
Compartment.reconfigure = StateEffect.define();
function combineConfig(configs, defaults, combine = {}) {
  let result = {};
  for (let config of configs)
    for (let key of Object.keys(config)) {
      let value = config[key], current = result[key];
      if (current === void 0)
        result[key] = value;
      else if (current === value || value === void 0)
        ;
      else if (Object.hasOwnProperty.call(combine, key))
        result[key] = combine[key](current, value);
      else
        throw new Error("Config merge conflict for field " + key);
    }
  for (let key in defaults)
    if (result[key] === void 0)
      result[key] = defaults[key];
  return result;
}
var RangeValue = class {
  /**
  Compare this value with another value. Used when comparing
  rangesets. The default implementation compares by identity.
  Unless you are only creating a fixed number of unique instances
  of your value type, it is a good idea to implement this
  properly.
  */
  eq(other) {
    return this == other;
  }
  /**
  Create a [range](https://codemirror.net/6/docs/ref/#state.Range) with this value.
  */
  range(from, to = from) {
    return Range.create(from, to, this);
  }
};
RangeValue.prototype.startSide = RangeValue.prototype.endSide = 0;
RangeValue.prototype.point = false;
RangeValue.prototype.mapMode = MapMode.TrackDel;
var Range = class _Range {
  constructor(from, to, value) {
    this.from = from;
    this.to = to;
    this.value = value;
  }
  /**
  @internal
  */
  static create(from, to, value) {
    return new _Range(from, to, value);
  }
};
function cmpRange(a, b) {
  return a.from - b.from || a.value.startSide - b.value.startSide;
}
var Chunk = class _Chunk {
  constructor(from, to, value, maxPoint) {
    this.from = from;
    this.to = to;
    this.value = value;
    this.maxPoint = maxPoint;
  }
  get length() {
    return this.to[this.to.length - 1];
  }
  // Find the index of the given position and side. Use the ranges'
  // `from` pos when `end == false`, `to` when `end == true`.
  findIndex(pos, side, end, startAt = 0) {
    let arr = end ? this.to : this.from;
    for (let lo = startAt, hi = arr.length; ; ) {
      if (lo == hi)
        return lo;
      let mid = lo + hi >> 1;
      let diff = arr[mid] - pos || (end ? this.value[mid].endSide : this.value[mid].startSide) - side;
      if (mid == lo)
        return diff >= 0 ? lo : hi;
      if (diff >= 0)
        hi = mid;
      else
        lo = mid + 1;
    }
  }
  between(offset, from, to, f) {
    for (let i = this.findIndex(from, -1e9, true), e = this.findIndex(to, 1e9, false, i); i < e; i++)
      if (f(this.from[i] + offset, this.to[i] + offset, this.value[i]) === false)
        return false;
  }
  map(offset, changes) {
    let value = [], from = [], to = [], newPos = -1, maxPoint = -1;
    for (let i = 0; i < this.value.length; i++) {
      let val = this.value[i], curFrom = this.from[i] + offset, curTo = this.to[i] + offset, newFrom, newTo;
      if (curFrom == curTo) {
        let mapped = changes.mapPos(curFrom, val.startSide, val.mapMode);
        if (mapped == null)
          continue;
        newFrom = newTo = mapped;
        if (val.startSide != val.endSide) {
          newTo = changes.mapPos(curFrom, val.endSide);
          if (newTo < newFrom)
            continue;
        }
      } else {
        newFrom = changes.mapPos(curFrom, val.startSide);
        newTo = changes.mapPos(curTo, val.endSide);
        if (newFrom > newTo || newFrom == newTo && val.startSide > 0 && val.endSide <= 0)
          continue;
      }
      if ((newTo - newFrom || val.endSide - val.startSide) < 0)
        continue;
      if (newPos < 0)
        newPos = newFrom;
      if (val.point)
        maxPoint = Math.max(maxPoint, newTo - newFrom);
      value.push(val);
      from.push(newFrom - newPos);
      to.push(newTo - newPos);
    }
    return { mapped: value.length ? new _Chunk(from, to, value, maxPoint) : null, pos: newPos };
  }
};
var RangeSet = class _RangeSet {
  constructor(chunkPos, chunk, nextLayer, maxPoint) {
    this.chunkPos = chunkPos;
    this.chunk = chunk;
    this.nextLayer = nextLayer;
    this.maxPoint = maxPoint;
  }
  /**
  @internal
  */
  static create(chunkPos, chunk, nextLayer, maxPoint) {
    return new _RangeSet(chunkPos, chunk, nextLayer, maxPoint);
  }
  /**
  @internal
  */
  get length() {
    let last = this.chunk.length - 1;
    return last < 0 ? 0 : Math.max(this.chunkEnd(last), this.nextLayer.length);
  }
  /**
  The number of ranges in the set.
  */
  get size() {
    if (this.isEmpty)
      return 0;
    let size = this.nextLayer.size;
    for (let chunk of this.chunk)
      size += chunk.value.length;
    return size;
  }
  /**
  @internal
  */
  chunkEnd(index) {
    return this.chunkPos[index] + this.chunk[index].length;
  }
  /**
  Update the range set, optionally adding new ranges or filtering
  out existing ones.
  
  (Note: The type parameter is just there as a kludge to work
  around TypeScript variance issues that prevented `RangeSet<X>`
  from being a subtype of `RangeSet<Y>` when `X` is a subtype of
  `Y`.)
  */
  update(updateSpec) {
    let { add = [], sort = false, filterFrom = 0, filterTo = this.length } = updateSpec;
    let filter = updateSpec.filter;
    if (add.length == 0 && !filter)
      return this;
    if (sort)
      add = add.slice().sort(cmpRange);
    if (this.isEmpty)
      return add.length ? _RangeSet.of(add) : this;
    let cur = new LayerCursor(this, null, -1).goto(0), i = 0, spill = [];
    let builder = new RangeSetBuilder();
    while (cur.value || i < add.length) {
      if (i < add.length && (cur.from - add[i].from || cur.startSide - add[i].value.startSide) >= 0) {
        let range = add[i++];
        if (!builder.addInner(range.from, range.to, range.value))
          spill.push(range);
      } else if (cur.rangeIndex == 1 && cur.chunkIndex < this.chunk.length && (i == add.length || this.chunkEnd(cur.chunkIndex) < add[i].from) && (!filter || filterFrom > this.chunkEnd(cur.chunkIndex) || filterTo < this.chunkPos[cur.chunkIndex]) && builder.addChunk(this.chunkPos[cur.chunkIndex], this.chunk[cur.chunkIndex])) {
        cur.nextChunk();
      } else {
        if (!filter || filterFrom > cur.to || filterTo < cur.from || filter(cur.from, cur.to, cur.value)) {
          if (!builder.addInner(cur.from, cur.to, cur.value))
            spill.push(Range.create(cur.from, cur.to, cur.value));
        }
        cur.next();
      }
    }
    return builder.finishInner(this.nextLayer.isEmpty && !spill.length ? _RangeSet.empty : this.nextLayer.update({ add: spill, filter, filterFrom, filterTo }));
  }
  /**
  Map this range set through a set of changes, return the new set.
  */
  map(changes) {
    if (changes.empty || this.isEmpty)
      return this;
    let chunks = [], chunkPos = [], maxPoint = -1;
    for (let i = 0; i < this.chunk.length; i++) {
      let start = this.chunkPos[i], chunk = this.chunk[i];
      let touch = changes.touchesRange(start, start + chunk.length);
      if (touch === false) {
        maxPoint = Math.max(maxPoint, chunk.maxPoint);
        chunks.push(chunk);
        chunkPos.push(changes.mapPos(start));
      } else if (touch === true) {
        let { mapped, pos } = chunk.map(start, changes);
        if (mapped) {
          maxPoint = Math.max(maxPoint, mapped.maxPoint);
          chunks.push(mapped);
          chunkPos.push(pos);
        }
      }
    }
    let next = this.nextLayer.map(changes);
    return chunks.length == 0 ? next : new _RangeSet(chunkPos, chunks, next || _RangeSet.empty, maxPoint);
  }
  /**
  Iterate over the ranges that touch the region `from` to `to`,
  calling `f` for each. There is no guarantee that the ranges will
  be reported in any specific order. When the callback returns
  `false`, iteration stops.
  */
  between(from, to, f) {
    if (this.isEmpty)
      return;
    for (let i = 0; i < this.chunk.length; i++) {
      let start = this.chunkPos[i], chunk = this.chunk[i];
      if (to >= start && from <= start + chunk.length && chunk.between(start, from - start, to - start, f) === false)
        return;
    }
    this.nextLayer.between(from, to, f);
  }
  /**
  Iterate over the ranges in this set, in order, including all
  ranges that end at or after `from`.
  */
  iter(from = 0) {
    return HeapCursor.from([this]).goto(from);
  }
  /**
  @internal
  */
  get isEmpty() {
    return this.nextLayer == this;
  }
  /**
  Iterate over the ranges in a collection of sets, in order,
  starting from `from`.
  */
  static iter(sets, from = 0) {
    return HeapCursor.from(sets).goto(from);
  }
  /**
  Iterate over two groups of sets, calling methods on `comparator`
  to notify it of possible differences.
  */
  static compare(oldSets, newSets, textDiff, comparator, minPointSize = -1) {
    let a = oldSets.filter((set) => set.maxPoint > 0 || !set.isEmpty && set.maxPoint >= minPointSize);
    let b = newSets.filter((set) => set.maxPoint > 0 || !set.isEmpty && set.maxPoint >= minPointSize);
    let sharedChunks = findSharedChunks(a, b, textDiff);
    let sideA = new SpanCursor(a, sharedChunks, minPointSize);
    let sideB = new SpanCursor(b, sharedChunks, minPointSize);
    textDiff.iterGaps((fromA, fromB, length) => compare(sideA, fromA, sideB, fromB, length, comparator));
    if (textDiff.empty && textDiff.length == 0)
      compare(sideA, 0, sideB, 0, 0, comparator);
  }
  /**
  Compare the contents of two groups of range sets, returning true
  if they are equivalent in the given range.
  */
  static eq(oldSets, newSets, from = 0, to) {
    if (to == null)
      to = 1e9 - 1;
    let a = oldSets.filter((set) => !set.isEmpty && newSets.indexOf(set) < 0);
    let b = newSets.filter((set) => !set.isEmpty && oldSets.indexOf(set) < 0);
    if (a.length != b.length)
      return false;
    if (!a.length)
      return true;
    let sharedChunks = findSharedChunks(a, b);
    let sideA = new SpanCursor(a, sharedChunks, 0).goto(from), sideB = new SpanCursor(b, sharedChunks, 0).goto(from);
    for (; ; ) {
      if (sideA.to != sideB.to || !sameValues(sideA.active, sideB.active) || sideA.point && (!sideB.point || !sideA.point.eq(sideB.point)))
        return false;
      if (sideA.to > to)
        return true;
      sideA.next();
      sideB.next();
    }
  }
  /**
  Iterate over a group of range sets at the same time, notifying
  the iterator about the ranges covering every given piece of
  content. Returns the open count (see
  [`SpanIterator.span`](https://codemirror.net/6/docs/ref/#state.SpanIterator.span)) at the end
  of the iteration.
  */
  static spans(sets, from, to, iterator, minPointSize = -1) {
    let cursor = new SpanCursor(sets, null, minPointSize).goto(from), pos = from;
    let openRanges = cursor.openStart;
    for (; ; ) {
      let curTo = Math.min(cursor.to, to);
      if (cursor.point) {
        let active = cursor.activeForPoint(cursor.to);
        let openCount = cursor.pointFrom < from ? active.length + 1 : Math.min(active.length, openRanges);
        iterator.point(pos, curTo, cursor.point, active, openCount, cursor.pointRank);
        openRanges = Math.min(cursor.openEnd(curTo), active.length);
      } else if (curTo > pos) {
        iterator.span(pos, curTo, cursor.active, openRanges);
        openRanges = cursor.openEnd(curTo);
      }
      if (cursor.to > to)
        return openRanges + (cursor.point && cursor.to > to ? 1 : 0);
      pos = cursor.to;
      cursor.next();
    }
  }
  /**
  Create a range set for the given range or array of ranges. By
  default, this expects the ranges to be _sorted_ (by start
  position and, if two start at the same position,
  `value.startSide`). You can pass `true` as second argument to
  cause the method to sort them.
  */
  static of(ranges, sort = false) {
    let build = new RangeSetBuilder();
    for (let range of ranges instanceof Range ? [ranges] : sort ? lazySort(ranges) : ranges)
      build.add(range.from, range.to, range.value);
    return build.finish();
  }
};
RangeSet.empty = new RangeSet([], [], null, -1);
function lazySort(ranges) {
  if (ranges.length > 1)
    for (let prev = ranges[0], i = 1; i < ranges.length; i++) {
      let cur = ranges[i];
      if (cmpRange(prev, cur) > 0)
        return ranges.slice().sort(cmpRange);
      prev = cur;
    }
  return ranges;
}
RangeSet.empty.nextLayer = RangeSet.empty;
var RangeSetBuilder = class _RangeSetBuilder {
  finishChunk(newArrays) {
    this.chunks.push(new Chunk(this.from, this.to, this.value, this.maxPoint));
    this.chunkPos.push(this.chunkStart);
    this.chunkStart = -1;
    this.setMaxPoint = Math.max(this.setMaxPoint, this.maxPoint);
    this.maxPoint = -1;
    if (newArrays) {
      this.from = [];
      this.to = [];
      this.value = [];
    }
  }
  /**
  Create an empty builder.
  */
  constructor() {
    this.chunks = [];
    this.chunkPos = [];
    this.chunkStart = -1;
    this.last = null;
    this.lastFrom = -1e9;
    this.lastTo = -1e9;
    this.from = [];
    this.to = [];
    this.value = [];
    this.maxPoint = -1;
    this.setMaxPoint = -1;
    this.nextLayer = null;
  }
  /**
  Add a range. Ranges should be added in sorted (by `from` and
  `value.startSide`) order.
  */
  add(from, to, value) {
    if (!this.addInner(from, to, value))
      (this.nextLayer || (this.nextLayer = new _RangeSetBuilder())).add(from, to, value);
  }
  /**
  @internal
  */
  addInner(from, to, value) {
    let diff = from - this.lastTo || value.startSide - this.last.endSide;
    if (diff <= 0 && (from - this.lastFrom || value.startSide - this.last.startSide) < 0)
      throw new Error("Ranges must be added sorted by `from` position and `startSide`");
    if (diff < 0)
      return false;
    if (this.from.length == 250)
      this.finishChunk(true);
    if (this.chunkStart < 0)
      this.chunkStart = from;
    this.from.push(from - this.chunkStart);
    this.to.push(to - this.chunkStart);
    this.last = value;
    this.lastFrom = from;
    this.lastTo = to;
    this.value.push(value);
    if (value.point)
      this.maxPoint = Math.max(this.maxPoint, to - from);
    return true;
  }
  /**
  @internal
  */
  addChunk(from, chunk) {
    if ((from - this.lastTo || chunk.value[0].startSide - this.last.endSide) < 0)
      return false;
    if (this.from.length)
      this.finishChunk(true);
    this.setMaxPoint = Math.max(this.setMaxPoint, chunk.maxPoint);
    this.chunks.push(chunk);
    this.chunkPos.push(from);
    let last = chunk.value.length - 1;
    this.last = chunk.value[last];
    this.lastFrom = chunk.from[last] + from;
    this.lastTo = chunk.to[last] + from;
    return true;
  }
  /**
  Finish the range set. Returns the new set. The builder can't be
  used anymore after this has been called.
  */
  finish() {
    return this.finishInner(RangeSet.empty);
  }
  /**
  @internal
  */
  finishInner(next) {
    if (this.from.length)
      this.finishChunk(false);
    if (this.chunks.length == 0)
      return next;
    let result = RangeSet.create(this.chunkPos, this.chunks, this.nextLayer ? this.nextLayer.finishInner(next) : next, this.setMaxPoint);
    this.from = null;
    return result;
  }
};
function findSharedChunks(a, b, textDiff) {
  let inA = /* @__PURE__ */ new Map();
  for (let set of a)
    for (let i = 0; i < set.chunk.length; i++)
      if (set.chunk[i].maxPoint <= 0)
        inA.set(set.chunk[i], set.chunkPos[i]);
  let shared = /* @__PURE__ */ new Set();
  for (let set of b)
    for (let i = 0; i < set.chunk.length; i++) {
      let known = inA.get(set.chunk[i]);
      if (known != null && (textDiff ? textDiff.mapPos(known) : known) == set.chunkPos[i] && !(textDiff === null || textDiff === void 0 ? void 0 : textDiff.touchesRange(known, known + set.chunk[i].length)))
        shared.add(set.chunk[i]);
    }
  return shared;
}
var LayerCursor = class {
  constructor(layer, skip, minPoint, rank = 0) {
    this.layer = layer;
    this.skip = skip;
    this.minPoint = minPoint;
    this.rank = rank;
  }
  get startSide() {
    return this.value ? this.value.startSide : 0;
  }
  get endSide() {
    return this.value ? this.value.endSide : 0;
  }
  goto(pos, side = -1e9) {
    this.chunkIndex = this.rangeIndex = 0;
    this.gotoInner(pos, side, false);
    return this;
  }
  gotoInner(pos, side, forward) {
    while (this.chunkIndex < this.layer.chunk.length) {
      let next = this.layer.chunk[this.chunkIndex];
      if (!(this.skip && this.skip.has(next) || this.layer.chunkEnd(this.chunkIndex) < pos || next.maxPoint < this.minPoint))
        break;
      this.chunkIndex++;
      forward = false;
    }
    if (this.chunkIndex < this.layer.chunk.length) {
      let rangeIndex = this.layer.chunk[this.chunkIndex].findIndex(pos - this.layer.chunkPos[this.chunkIndex], side, true);
      if (!forward || this.rangeIndex < rangeIndex)
        this.setRangeIndex(rangeIndex);
    }
    this.next();
  }
  forward(pos, side) {
    if ((this.to - pos || this.endSide - side) < 0)
      this.gotoInner(pos, side, true);
  }
  next() {
    for (; ; ) {
      if (this.chunkIndex == this.layer.chunk.length) {
        this.from = this.to = 1e9;
        this.value = null;
        break;
      } else {
        let chunkPos = this.layer.chunkPos[this.chunkIndex], chunk = this.layer.chunk[this.chunkIndex];
        let from = chunkPos + chunk.from[this.rangeIndex];
        this.from = from;
        this.to = chunkPos + chunk.to[this.rangeIndex];
        this.value = chunk.value[this.rangeIndex];
        this.setRangeIndex(this.rangeIndex + 1);
        if (this.minPoint < 0 || this.value.point && this.to - this.from >= this.minPoint)
          break;
      }
    }
  }
  setRangeIndex(index) {
    if (index == this.layer.chunk[this.chunkIndex].value.length) {
      this.chunkIndex++;
      if (this.skip) {
        while (this.chunkIndex < this.layer.chunk.length && this.skip.has(this.layer.chunk[this.chunkIndex]))
          this.chunkIndex++;
      }
      this.rangeIndex = 0;
    } else {
      this.rangeIndex = index;
    }
  }
  nextChunk() {
    this.chunkIndex++;
    this.rangeIndex = 0;
    this.next();
  }
  compare(other) {
    return this.from - other.from || this.startSide - other.startSide || this.rank - other.rank || this.to - other.to || this.endSide - other.endSide;
  }
};
var HeapCursor = class _HeapCursor {
  constructor(heap) {
    this.heap = heap;
  }
  static from(sets, skip = null, minPoint = -1) {
    let heap = [];
    for (let i = 0; i < sets.length; i++) {
      for (let cur = sets[i]; !cur.isEmpty; cur = cur.nextLayer) {
        if (cur.maxPoint >= minPoint)
          heap.push(new LayerCursor(cur, skip, minPoint, i));
      }
    }
    return heap.length == 1 ? heap[0] : new _HeapCursor(heap);
  }
  get startSide() {
    return this.value ? this.value.startSide : 0;
  }
  goto(pos, side = -1e9) {
    for (let cur of this.heap)
      cur.goto(pos, side);
    for (let i = this.heap.length >> 1; i >= 0; i--)
      heapBubble(this.heap, i);
    this.next();
    return this;
  }
  forward(pos, side) {
    for (let cur of this.heap)
      cur.forward(pos, side);
    for (let i = this.heap.length >> 1; i >= 0; i--)
      heapBubble(this.heap, i);
    if ((this.to - pos || this.value.endSide - side) < 0)
      this.next();
  }
  next() {
    if (this.heap.length == 0) {
      this.from = this.to = 1e9;
      this.value = null;
      this.rank = -1;
    } else {
      let top = this.heap[0];
      this.from = top.from;
      this.to = top.to;
      this.value = top.value;
      this.rank = top.rank;
      if (top.value)
        top.next();
      heapBubble(this.heap, 0);
    }
  }
};
function heapBubble(heap, index) {
  for (let cur = heap[index]; ; ) {
    let childIndex = (index << 1) + 1;
    if (childIndex >= heap.length)
      break;
    let child = heap[childIndex];
    if (childIndex + 1 < heap.length && child.compare(heap[childIndex + 1]) >= 0) {
      child = heap[childIndex + 1];
      childIndex++;
    }
    if (cur.compare(child) < 0)
      break;
    heap[childIndex] = cur;
    heap[index] = child;
    index = childIndex;
  }
}
var SpanCursor = class {
  constructor(sets, skip, minPoint) {
    this.minPoint = minPoint;
    this.active = [];
    this.activeTo = [];
    this.activeRank = [];
    this.minActive = -1;
    this.point = null;
    this.pointFrom = 0;
    this.pointRank = 0;
    this.to = -1e9;
    this.endSide = 0;
    this.openStart = -1;
    this.cursor = HeapCursor.from(sets, skip, minPoint);
  }
  goto(pos, side = -1e9) {
    this.cursor.goto(pos, side);
    this.active.length = this.activeTo.length = this.activeRank.length = 0;
    this.minActive = -1;
    this.to = pos;
    this.endSide = side;
    this.openStart = -1;
    this.next();
    return this;
  }
  forward(pos, side) {
    while (this.minActive > -1 && (this.activeTo[this.minActive] - pos || this.active[this.minActive].endSide - side) < 0)
      this.removeActive(this.minActive);
    this.cursor.forward(pos, side);
  }
  removeActive(index) {
    remove(this.active, index);
    remove(this.activeTo, index);
    remove(this.activeRank, index);
    this.minActive = findMinIndex(this.active, this.activeTo);
  }
  addActive(trackOpen) {
    let i = 0, { value, to, rank } = this.cursor;
    while (i < this.activeRank.length && this.activeRank[i] <= rank)
      i++;
    insert(this.active, i, value);
    insert(this.activeTo, i, to);
    insert(this.activeRank, i, rank);
    if (trackOpen)
      insert(trackOpen, i, this.cursor.from);
    this.minActive = findMinIndex(this.active, this.activeTo);
  }
  // After calling this, if `this.point` != null, the next range is a
  // point. Otherwise, it's a regular range, covered by `this.active`.
  next() {
    let from = this.to, wasPoint = this.point;
    this.point = null;
    let trackOpen = this.openStart < 0 ? [] : null;
    for (; ; ) {
      let a = this.minActive;
      if (a > -1 && (this.activeTo[a] - this.cursor.from || this.active[a].endSide - this.cursor.startSide) < 0) {
        if (this.activeTo[a] > from) {
          this.to = this.activeTo[a];
          this.endSide = this.active[a].endSide;
          break;
        }
        this.removeActive(a);
        if (trackOpen)
          remove(trackOpen, a);
      } else if (!this.cursor.value) {
        this.to = this.endSide = 1e9;
        break;
      } else if (this.cursor.from > from) {
        this.to = this.cursor.from;
        this.endSide = this.cursor.startSide;
        break;
      } else {
        let nextVal = this.cursor.value;
        if (!nextVal.point) {
          this.addActive(trackOpen);
          this.cursor.next();
        } else if (wasPoint && this.cursor.to == this.to && this.cursor.from < this.cursor.to) {
          this.cursor.next();
        } else {
          this.point = nextVal;
          this.pointFrom = this.cursor.from;
          this.pointRank = this.cursor.rank;
          this.to = this.cursor.to;
          this.endSide = nextVal.endSide;
          this.cursor.next();
          this.forward(this.to, this.endSide);
          break;
        }
      }
    }
    if (trackOpen) {
      this.openStart = 0;
      for (let i = trackOpen.length - 1; i >= 0 && trackOpen[i] < from; i--)
        this.openStart++;
    }
  }
  activeForPoint(to) {
    if (!this.active.length)
      return this.active;
    let active = [];
    for (let i = this.active.length - 1; i >= 0; i--) {
      if (this.activeRank[i] < this.pointRank)
        break;
      if (this.activeTo[i] > to || this.activeTo[i] == to && this.active[i].endSide >= this.point.endSide)
        active.push(this.active[i]);
    }
    return active.reverse();
  }
  openEnd(to) {
    let open = 0;
    for (let i = this.activeTo.length - 1; i >= 0 && this.activeTo[i] > to; i--)
      open++;
    return open;
  }
};
function compare(a, startA, b, startB, length, comparator) {
  a.goto(startA);
  b.goto(startB);
  let endB = startB + length;
  let pos = startB, dPos = startB - startA;
  for (; ; ) {
    let diff = a.to + dPos - b.to || a.endSide - b.endSide;
    let end = diff < 0 ? a.to + dPos : b.to, clipEnd = Math.min(end, endB);
    if (a.point || b.point) {
      if (!(a.point && b.point && (a.point == b.point || a.point.eq(b.point)) && sameValues(a.activeForPoint(a.to), b.activeForPoint(b.to))))
        comparator.comparePoint(pos, clipEnd, a.point, b.point);
    } else {
      if (clipEnd > pos && !sameValues(a.active, b.active))
        comparator.compareRange(pos, clipEnd, a.active, b.active);
    }
    if (end > endB)
      break;
    pos = end;
    if (diff <= 0)
      a.next();
    if (diff >= 0)
      b.next();
  }
}
function sameValues(a, b) {
  if (a.length != b.length)
    return false;
  for (let i = 0; i < a.length; i++)
    if (a[i] != b[i] && !a[i].eq(b[i]))
      return false;
  return true;
}
function remove(array, index) {
  for (let i = index, e = array.length - 1; i < e; i++)
    array[i] = array[i + 1];
  array.pop();
}
function insert(array, index, value) {
  for (let i = array.length - 1; i >= index; i--)
    array[i + 1] = array[i];
  array[index] = value;
}
function findMinIndex(value, array) {
  let found = -1, foundPos = 1e9;
  for (let i = 0; i < array.length; i++)
    if ((array[i] - foundPos || value[i].endSide - value[found].endSide) < 0) {
      found = i;
      foundPos = array[i];
    }
  return found;
}
function countColumn(string, tabSize, to = string.length) {
  let n = 0;
  for (let i = 0; i < to; ) {
    if (string.charCodeAt(i) == 9) {
      n += tabSize - n % tabSize;
      i++;
    } else {
      n++;
      i = findClusterBreak(string, i);
    }
  }
  return n;
}
function findColumn(string, col, tabSize, strict) {
  for (let i = 0, n = 0; ; ) {
    if (n >= col)
      return i;
    if (i == string.length)
      break;
    n += string.charCodeAt(i) == 9 ? tabSize - n % tabSize : 1;
    i = findClusterBreak(string, i);
  }
  return strict === true ? -1 : string.length;
}

export {
  Text,
  Line,
  findClusterBreak,
  codePointAt,
  fromCodePoint,
  codePointSize,
  MapMode,
  ChangeDesc,
  ChangeSet,
  SelectionRange,
  EditorSelection,
  Facet,
  StateField,
  Prec,
  Compartment,
  Annotation,
  AnnotationType,
  StateEffectType,
  StateEffect,
  Transaction,
  CharCategory,
  EditorState,
  combineConfig,
  RangeValue,
  Range,
  RangeSet,
  RangeSetBuilder,
  countColumn,
  findColumn
};
//# sourceMappingURL=chunk-MKFMOIK6.js.map