@sutton-signwriting/core/core.mjs

/**
* Sutton SignWriting Core Module v1.3.1 (https://github.com/sutton-signwriting/core)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* core.mjs is released under the MIT License.
*/

/**
 * Object of regular expressions for FSW strings
 * 
 *   { symbol, coord, sort, box, prefix, spatial, signbox, sign, sortable }
 * @alias fsw.re
 * @type {object}
 */
let re$4 = {
  'symbol': 'S[123][0-9a-f]{2}[0-5][0-9a-f]',
  'coord': '[0-9]{3}x[0-9]{3}',
  'sort': 'A',
  'box': '[BLMR]'
};
re$4.prefix = `(?:${re$4.sort}(?:${re$4.symbol})+)`;
re$4.spatial = `${re$4.symbol}${re$4.coord}`;
re$4.signbox = `${re$4.box}${re$4.coord}(?:${re$4.spatial})*`;
re$4.sign = `${re$4.prefix}?${re$4.signbox}`;
re$4.sortable = `${re$4.prefix}${re$4.signbox}`;

/**
 * Object of regular expressions for style strings
 * 
 *   { colorize, colorhex, colorname, padding, zoom, zoomsym, classbase, id, colorbase, color, colors, background, detail, detailsym, classes, full }
 * @alias style.re
 * @type {object}
 */
let re$3 = {
  'colorize': 'C',
  'colorhex': '(?:[0-9a-fA-F]{3}){1,2}',
  'colorname': '[a-zA-Z]+',
  'padding': 'P[0-9]{2}',
  'zoom': 'Z(?:[0-9]+(?:\\.[0-9]+)?|x)',
  'zoomsym': 'Z[0-9]{2},[0-9]+(?:\\.[0-9]+)?(?:,[0-9]{3}x[0-9]{3})?',
  'classbase': '-?[_a-zA-Z][_a-zA-Z0-9-]{0,100}',
  'id': '[a-zA-Z][_a-zA-Z0-9-]{0,100}'
};
re$3.colorbase = `(?:${re$3.colorhex}|${re$3.colorname})`;
re$3.color = `_${re$3.colorbase}_`;
re$3.colors = `_${re$3.colorbase}(?:,${re$3.colorbase})?_`;
re$3.background = `G${re$3.color}`;
re$3.detail = `D${re$3.colors}`;
re$3.detailsym = `D[0-9]{2}${re$3.colors}`;
re$3.classes = `${re$3.classbase}(?: ${re$3.classbase})*`;
re$3.full = `-(${re$3.colorize})?(${re$3.padding})?(${re$3.background})?(${re$3.detail})?(${re$3.zoom})?(?:-((?:${re$3.detailsym})*)((?:${re$3.zoomsym})*))?(?:-(${re$3.classes})?!(?:(${re$3.id})!)?)?`;

const prefixColor = color => {
  const regex = new RegExp(`^${re$3.colorhex}$`);
  return (regex.test(color) ? '#' : '') + color;
};
/**
 * Function to parse style string to object
 * @function style.parse
 * @param {string} styleString - a style string
 * @returns {object} elements of style string
 * @example
 * style.parse('-CP10G_blue_D_red,Cyan_')
 * 
 * return {
 *  'colorize': true,
 *  'padding': 10,
 *  'background': 'blue',
 *  'detail': ['red', 'Cyan']
 * }
 */


const parse$4 = styleString => {
  const regex = `^${re$3.full}`;
  const m = (typeof styleString === 'string' ? styleString.match(new RegExp(regex)) : []) || [];
  return {
    'colorize': !m[1] ? undefined : !!m[1],
    'padding': !m[2] ? undefined : parseInt(m[2].slice(1)),
    'background': !m[3] ? undefined : prefixColor(m[3].slice(2, -1)),
    'detail': !m[4] ? undefined : m[4].slice(2, -1).split(',').map(prefixColor),
    'zoom': !m[5] ? undefined : m[5] === 'Zx' ? 'x' : parseFloat(m[5].slice(1)),
    'detailsym': !m[6] ? undefined : m[6].match(new RegExp(re$3.detailsym, 'g')).map(val => {
      const parts = val.split('_');
      const detail = parts[1].split(',').map(prefixColor);
      return {
        'index': parseInt(parts[0].slice(1)),
        'detail': detail
      };
    }),
    'zoomsym': !m[7] ? undefined : m[7].match(new RegExp(re$3.zoomsym, 'g')).map(val => {
      const parts = val.split(',');
      return {
        'index': parseInt(parts[0].slice(1)),
        'zoom': parseFloat(parts[1]),
        'offset': !parts[2] ? undefined : parts[2].split('x').map(val => parseInt(val) - 500)
      };
    }),
    'classes': !m[8] ? undefined : m[8],
    'id': !m[9] ? undefined : m[9]
  };
};

/**
 * Function to compose style string from object
 * @function style.compose
 * @param {object} styleObject - an object of style options
 * @param {boolean} styleObject.colorize - boolean to use standardized colors for symbol groups
 * @param {number} styleObject.padding - integer value for padding around symbol or sign
 * @param {string} styleObject.background - css name or hex color for background
 * @param {string[]} styleObject.detail - css name or hex color for line and optional fill
 * @param {number} styleObject.zoom - decimal value for zoom level
 * @param {{index:number,detail:string[]}[]} styleObject.detailsym - array of symbol indexes and detail color array
 * @param {{index:number,zoom:number,offset:number[]}[]} styleObject.zoomsym - array of symbol indexes and zoom levels with optional x,y offset
 * @param {string} styleObject.classes - list of class names separated with spaces used for SVG
 * @param {string} styleObject.id - id name used for SVG
 * @returns {string} style string 
 * @example 
 * style.compose({
 *  'colorize': true,
 *  'padding': 10,
 *  'background': 'blue',
 *  'detail': ['red', 'Cyan'],
 *  'zoom': 1.1,
 *  'detailsym': [
 *    {
 *      'index': 1,
 *      'detail': ['#ff00ff']
 *    },
 *    {
 *      'index': 2,
 *      'detail': ['yellow', 'green']
 *    }
 *  ],
 *  'zoomsym': [
 *    {
 *      'index': 1,
 *      'zoom': 10,
 *      'offset': [0, 0]
 *    },
 *    {
 *      'index': 2,
 *      'zoom': 5.5
 *    }
 *  ],
 *  'classes': 'primary blinking',
 *  'id': 'cursor'
 * })
 *
 * return '-CP10G_blue_D_red,Cyan_Z1.1-D01_ff00ff_D02_yellow,green_Z01,10,500x500Z02,5.5-primary blinking!cursor!'
 */

const compose$4 = styleObject => {
  if (typeof styleObject !== 'object' || styleObject === null) return undefined; // three sections

  let style1 = '-';
  style1 += !styleObject.colorize ? '' : 'C';
  const padding = parseInt(styleObject.padding);
  style1 += !padding || padding <= 0 || padding > 99 ? '' : 'P' + (padding > 9 ? padding : '0' + padding);
  const background = !styleObject.background || !(typeof styleObject.background === 'string') ? undefined : styleObject.background.match(re$3.colorbase)[0];
  style1 += !background ? '' : 'G_' + background + '_';
  const detail1 = !styleObject.detail || !styleObject.detail[0] || !(typeof styleObject.detail[0] === 'string') ? undefined : styleObject.detail[0].match(re$3.colorbase)[0];
  const detail2 = !styleObject.detail || !styleObject.detail[1] || !(typeof styleObject.detail[1] === 'string') ? undefined : styleObject.detail[1].match(re$3.colorbase)[0];

  if (detail1) {
    style1 += 'D_' + detail1;

    if (detail2) {
      style1 += ',' + detail2;
    }

    style1 += '_';
  }

  const zoom = styleObject.zoom === 'x' ? 'x' : parseFloat(styleObject.zoom);
  style1 += !zoom || zoom <= 0 ? '' : 'Z' + zoom;
  let style2 = '';
  const detailsym = !styleObject.detailsym || !Array.isArray(styleObject.detailsym) ? [] : styleObject.detailsym.map(styleObject => {
    const index = parseInt(styleObject.index);
    if (!index || index <= 0 || index > 99) return '';
    let style = 'D' + (index > 9 ? index : '0' + index);
    const detail1 = !styleObject.detail || !styleObject.detail[0] ? undefined : styleObject.detail[0].match(re$3.colorbase)[0];
    const detail2 = !styleObject.detail || !styleObject.detail[1] ? undefined : styleObject.detail[1].match(re$3.colorbase)[0];

    if (detail1) {
      style += '_' + detail1;

      if (detail2) {
        style += ',' + detail2;
      }

      style += '_';
    }

    return style;
  });
  style2 += detailsym.join('');
  const zoomsym = !styleObject.zoomsym || !Array.isArray(styleObject.zoomsym) ? [] : styleObject.zoomsym.map(styleObject => {
    const index = parseInt(styleObject.index);
    if (!index || index <= 0 || index > 99) return '';
    let style = 'Z' + (index > 9 ? index : '0' + index);
    const zoom = parseFloat(styleObject.zoom);
    style += !zoom || zoom <= 0 ? '' : ',' + zoom;

    if (styleObject.offset && 0 in styleObject.offset && 1 in styleObject.offset) {
      const x = parseInt(styleObject.offset[0]) + 500;
      const y = parseInt(styleObject.offset[1]) + 500;

      if (x >= 250 && x < 750 && y >= 250 && y < 750) {
        style += ',' + x + 'x' + y;
      }
    }

    return style;
  });
  style2 += zoomsym.join('');
  let style3 = '';
  const classes = !styleObject.classes || !(typeof styleObject.classes === 'string') ? undefined : styleObject.classes.match(re$3.classes)[0];
  style3 += !classes ? '' : classes;
  const id = !styleObject.id || !(typeof styleObject.id === 'string') ? undefined : styleObject.id.match(re$3.id)[0];
  style3 += classes || id ? '!' : '';
  style3 += !id ? '' : id + '!';
  return style1 + (style2 || style3 ? '-' + style2 : '') + (style3 ? '-' + style3 : '');
};

/** The style module contains regular expressions and functions for parsing and composing style strings.
 * [Style string definition](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.5)
 * @module style
 */

var index$5 = /*#__PURE__*/Object.freeze({
  __proto__: null,
  re: re$3,
  parse: parse$4,
  compose: compose$4
});

/**
 * Object of regular expressions for SWU strings in UTF-16
 * 
 *   { symbol, coord, sort, box, prefix, spatial, signbox, sign, sortable }
 * @alias swu.re
 * @type {object}
 */
let re$2 = {
  'symbol': '(?:(?:\uD8C0[\uDC01-\uDFFF])|(?:[\uD8C1-\uD8FC][\uDC00-\uDFFF])|(?:\uD8FD[\uDC00-\uDC80]))',
  'coord': '(?:\uD836[\uDC0C-\uDDFF]){2}',
  'sort': '\uD836\uDC00',
  'box': '\uD836[\uDC01-\uDC04]'
};
re$2.prefix = `(?:${re$2.sort}(?:${re$2.symbol})+)`;
re$2.spatial = `${re$2.symbol}${re$2.coord}`;
re$2.signbox = `${re$2.box}${re$2.coord}(?:${re$2.spatial})*`;
re$2.sign = `${re$2.prefix}?${re$2.signbox}`;
re$2.sortable = `${re$2.prefix}${re$2.signbox}`;

/** The convert module contains functions to convert between Formal SignWriitng in ASCII (FSW) and SignWriting in Unicode (SWU) characters, along with other types of data.
 * [Characters set definitions](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.2)
 * @module convert
 */
/**
 * Function to convert an SWU structural marker to FSW equivalent
 * @function convert.swu2mark
 * @param {string} swuMark - character for SWU structural marker
 * @returns {string} FSW structural marker
 * @example
 * convert.swu2mark('𝠀')
 * 
 * return 'A'
 */

const swu2mark = swuMark => {
  return {
    '𝠀': 'A',
    '𝠁': 'B',
    '𝠂': 'L',
    '𝠃': 'M',
    '𝠄': 'R'
  }[swuMark];
};
/**
 * Function to convert an FSW structural marker to SWU equivalent
 * @function convert.mark2swu
 * @param {string} fswMark - character for FSW structural marker
 * @returns {string} SWU structural marker
 * @example
 * convert.mark2swu('A')
 * 
 * return '𝠀'
 */


const mark2swu = fswMark => {
  return {
    'A': '𝠀',
    'B': '𝠁',
    'L': '𝠂',
    'M': '𝠃',
    'R': '𝠄'
  }[fswMark];
};
/**
 * Function to convert an SWU number character to an integer
 * @function convert.swu2num
 * @param {string} swuNum - SWU number character
 * @returns {number} Integer value for number
 * @example
 * convert.swu2num('𝤆')
 * 
 * return 500
 */


const swu2num = swuNum => parseInt(swuNum.codePointAt(0)) - 0x1D80C + 250;
/**
 * Function to convert a number to an SWU number character
 * @function convert.num2swu
 * @param {number} num - Integer value for number
 * @returns {string} SWU number character
 * @example
 * convert.num2swu(500)
 * 
 * return '𝤆'
 */


const num2swu = num => String.fromCodePoint(0x1D80C + parseInt(num) - 250);
/**
 * Function to convert two SWU number characters to an array of x,y integers
 * @function convert.swu2coord
 * @param {string} swuCoord - Two SWU number character
 * @returns {number[]} Array of x,y integers
 * @example
 * convert.swu2coord('𝤆𝤆')
 * 
 * return [500, 500]
 */


const swu2coord = swuCoord => [swu2num(swuCoord.slice(0, 2)), swu2num(swuCoord.slice(2, 4))];
/**
 * Function to convert an array of x,y integers to two SWU number characters
 * @function convert.coord2swu
 * @param {number[]} coord - Array of x,y integers
 * @returns {string} Two SWU number character
 * @example
 * convert.coord2swu([500, 500])
 * 
 * return '𝤆𝤆'
 */


const coord2swu = coord => coord.map(num => num2swu(num)).join('');
/**
 * Function to convert an FSW coordinate string to an array of x,y integers
 * @function convert.fsw2coord
 * @param {string} fswCoord - An FSW coordinate string
 * @returns {number[]} Array of x,y integers
 * @example
 * convert.fsw2coord('500x500')
 * 
 * return [500, 500]
 */


const fsw2coord = fswCoord => fswCoord.split('x').map(num => parseInt(num));
/**
 * Function to convert an array of x,y integers to an FSW coordinate string
 * @function convert.coord2fsw
 * @param {number[]} coord - Array of x,y integers
 * @returns {string} An FSW coordinate string
 * @example
 * convert.coord2fsw([500, 500])
 * 
 * return '500x500'
 */


const coord2fsw = coord => coord.join('x');
/**
 * Function to convert an SWU symbol character to a code point on plane 4
 * @function convert.swu2code
 * @param {string} swuSym - SWU symbol character
 * @returns {number} Code point on plane 4
 * @example
 * convert.swu2code('񀀁')
 * 
 * return 0x40001
 */


const swu2code = swuSym => parseInt(swuSym.codePointAt(0));
/**
 * Function to convert a code point on plane 4 to an SWU symbol character
 * @function convert.code2swu
 * @param {number} code - Code point on plane 4
 * @returns {string} SWU symbol character
 * @example
 * convert.code2swu(0x40001)
 * 
 * return '񀀁'
 */


const code2swu = code => String.fromCodePoint(code);
/**
 * Function to convert an SWU symbol character to a 16-bit ID
 * @function convert.swu2id
 * @param {string} swuSym - SWU symbol character
 * @returns {number} 16-bit ID
 * @example
 * convert.swu2id('񀀁')
 * 
 * return 1
 */


const swu2id = swuSym => swu2code(swuSym) - 0x40000;
/**
 * Function to convert a 16-bit ID to an SWU symbol character
 * @function convert.id2swu
 * @param {number} id - 16-bit ID
 * @returns {string} SWU symbol character
 * @example
 * convert.id2swu(1)
 * 
 * return '񀀁'
 */


const id2swu = id => code2swu(id + 0x40000);
/**
 * Function to convert an FSW symbol key to a 16-bit ID
 * @function convert.key2id
 * @param {string} key - FSW symbol key
 * @returns {number} 16-bit ID
 * @example
 * convert.key2id('S10000')
 * 
 * return 1
 */


const key2id = key => 1 + (parseInt(key.slice(1, 4), 16) - 256) * 96 + parseInt(key.slice(4, 5), 16) * 16 + parseInt(key.slice(5, 6), 16);
/**
 * Function to convert a 16-bit ID to an FSW symbol key
 * @function convert.id2key
 * @param {number} id - 16-bit ID
 * @returns {string} FSW symbol key
 * @example
 * convert.id2key(1)
 * 
 * return 'S10000'
 */


const id2key = id => {
  const symcode = id - 1;
  const base = parseInt(symcode / 96);
  const fill = parseInt((symcode - base * 96) / 16);
  const rotation = parseInt(symcode - base * 96 - fill * 16);
  return 'S' + (base + 0x100).toString(16) + fill.toString(16) + rotation.toString(16);
};
/**
 * Function to convert an SWU symbol character to an FSW symbol key
 * @function convert.swu2key
 * @param {string} swuSym - SWU symbol character
 * @returns {string} FSW symbol key
 * @example
 * convert.swu2key('񀀁')
 * 
 * return 'S10000'
 */


const swu2key = swuSym => {
  const symcode = swu2code(swuSym) - 0x40001;
  const base = parseInt(symcode / 96);
  const fill = parseInt((symcode - base * 96) / 16);
  const rotation = parseInt(symcode - base * 96 - fill * 16);
  return 'S' + (base + 0x100).toString(16) + fill.toString(16) + rotation.toString(16);
};
/**
 * Function to convert an FSW symbol key to an SWU symbol character
 * @function convert.key2swu
 * @param {string} key - FSW symbol key
 * @returns {string} SWU symbol character
 * @example
 * convert.key2swu('S10000')
 * 
 * return '񀀁'
 */


const key2swu = key => code2swu(0x40001 + (parseInt(key.slice(1, 4), 16) - 256) * 96 + parseInt(key.slice(4, 5), 16) * 16 + parseInt(key.slice(5, 6), 16));
/**
 * Function to convert SWU text to FSW text
 * @function convert.swu2fsw
 * @param {string} swuText - SWU text
 * @returns {string} FSW text
 * @example
 * convert.swu2fsw('𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭')
 * 
 * return 'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475'
 */


const swu2fsw = swuText => {
  if (!swuText) return '';
  let fsw = swuText.replace(/𝠀/g, "A").replace(/𝠁/g, "B").replace(/𝠂/g, "L").replace(/𝠃/g, "M").replace(/𝠄/g, "R");
  const syms = fsw.match(new RegExp(re$2.symbol, 'g'));

  if (syms) {
    syms.forEach(function (sym) {
      fsw = fsw.replace(sym, swu2key(sym));
    });
  }

  const coords = fsw.match(new RegExp(re$2.coord, 'g'));

  if (coords) {
    coords.forEach(function (coord) {
      fsw = fsw.replace(coord, swu2coord(coord).join('x'));
    });
  }

  return fsw;
};
/**
 * Function to convert FSW text to SWU text
 * @function convert.fsw2swu
 * @param {string} fswText - FSW text
 * @returns {string} SWU text
 * @example
 * convert.fsw2swu('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475')
 * 
 * return '𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭'
 */


const fsw2swu = fswText => {
  if (!fswText) return '';
  const prefixes = fswText.match(new RegExp(re$4.prefix, 'g'));

  if (prefixes) {
    prefixes.forEach(function (prefix) {
      fswText = fswText.replace(prefix, '𝠀' + prefix.slice(1).match(/.{6}/g).map(key => key2swu(key)).join(''));
    });
  }

  const boxes = fswText.match(new RegExp(re$4.box + re$4.coord, 'g'));

  if (boxes) {
    boxes.forEach(function (boxes) {
      fswText = fswText.replace(boxes, mark2swu(boxes.slice(0, 1)) + coord2swu(fsw2coord(boxes.slice(1, 8))));
    });
  }

  const spatials = fswText.match(new RegExp(re$4.spatial, 'g'));

  if (spatials) {
    spatials.forEach(function (spatial) {
      fswText = fswText.replace(spatial, key2swu(spatial.slice(0, 6)) + coord2swu(fsw2coord(spatial.slice(6, 13))));
    });
  }

  return fswText;
};

var index$4 = /*#__PURE__*/Object.freeze({
  __proto__: null,
  swu2mark: swu2mark,
  mark2swu: mark2swu,
  swu2num: swu2num,
  num2swu: num2swu,
  swu2coord: swu2coord,
  coord2swu: coord2swu,
  fsw2coord: fsw2coord,
  coord2fsw: coord2fsw,
  swu2code: swu2code,
  code2swu: code2swu,
  swu2id: swu2id,
  id2swu: id2swu,
  key2id: key2id,
  id2key: id2key,
  swu2key: swu2key,
  key2swu: key2swu,
  swu2fsw: swu2fsw,
  fsw2swu: fsw2swu
});

const parse$3 = {
  /**
   * Function to parse an fsw symbol with optional coordinate and style string
   * @function fsw.parse.symbol
   * @param {string} fswSym - an fsw symbol
   * @returns {object} elements of fsw symbol
   * @example
   * fsw.parse.symbol('S10000500x500-C')
   * 
   * return {
   *  'symbol': 'S10000',
   *  'coord': [500, 500],
   *  'style': '-C'
   * }
   */
  symbol: fswSym => {
    const regex = `^(${re$4.symbol})(${re$4.coord})?(${re$3.full})?`;
    const symbol = typeof fswSym === 'string' ? fswSym.match(new RegExp(regex)) : undefined;
    return {
      'symbol': symbol ? symbol[1] : undefined,
      'coord': symbol && symbol[2] ? fsw2coord(symbol[2]) : undefined,
      'style': symbol ? symbol[3] : undefined
    };
  },

  /**
   * Function to parse an fsw sign with style string
   * @function fsw.parse.sign
   * @param {string} fswSign - an fsw sign
   * @returns {object} elements of fsw sign
   * @example
   * fsw.parse.sign('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475-C')
   * 
   * return {
   *  sequence: ['S10011', 'S10019', 'S2e704', 'S2e748'],
   *  box: 'M',
   *  max: [525, 535],
   *  spatials: [
   *    {
   *      symbol: 'S2e748',
   *      coord: [483, 510]
   *    },
   *    {
   *      symbol: 'S10011',
   *      coord: [501, 466]
   *    },
   *    {
   *      symbol: 'S2e704',
   *      coord: [510, 500]
   *    },
   *    {
   *      symbol: 'S10019',
   *      coord: [476, 475]
   *    }
   *  ],
   *  style: '-C'
   * }
   */
  sign: fswSign => {
    const regex = `^(${re$4.prefix})?(${re$4.signbox})(${re$3.full})?`;
    const sign = typeof fswSign === 'string' ? fswSign.match(new RegExp(regex)) : undefined;

    if (sign) {
      return {
        'sequence': sign[1] ? sign[1].slice(1).match(/.{6}/g) : undefined,
        'box': sign[2][0],
        'max': fsw2coord(sign[2].slice(1, 8)),
        'spatials': sign[2].length < 9 ? undefined : sign[2].slice(8).match(/(.{13})/g).map(m => {
          return {
            symbol: m.slice(0, 6),
            coord: [parseInt(m.slice(6, 9)), parseInt(m.slice(10, 13))]
          };
        }),
        'style': sign[3]
      };
    } else {
      return {};
    }
  }
};

const compose$3 = {
  /**
   * Function to compose an fsw symbol with optional coordinate and style string
   * @function fsw.compose.symbol
   * @param {object} fswSymObject - an fsw symbol object
   * @param {string} fswSymObject.symbol - an fsw symbol key
   * @param {number[]} fswSymObject.coord - top-left coordinate of symbol with 500,500 center
   * @param {string} fswSymObject.style - a style string for custom appearance
   * @returns {string} an fsw symbol string
   * @example
   * fsw.compose.symbol({
   *  'symbol': 'S10000',
   *  'coord': [480, 480],
   *  'style': '-C'
   * })
   * 
   * return 'S10000480x480-C'
   */
  symbol: fswSymObject => {
    if (typeof fswSymObject.symbol === 'string') {
      const symbol = (fswSymObject.symbol.match(re$4.symbol) || [''])[0];

      if (symbol) {
        const x = (fswSymObject.coord && fswSymObject.coord[0] || '').toString();
        const y = (fswSymObject.coord && fswSymObject.coord[1] || '').toString();
        const coord = ((x + 'x' + y).match(re$4.coord) || [''])[0] || '';
        const styleStr = typeof fswSymObject.style === 'string' && (fswSymObject.style.match(re$3.full) || [''])[0] || '';
        return symbol + coord + styleStr;
      }
    }

    return undefined;
  },

  /**
   * Function to compose an fsw sign with style string
   * @function fsw.compose.sign
   * @param {string[]} fswSignObject.sequence - an ordered array of symbols
   * @param {string} fswSignObject.box - a choice BLMR: horizontal Box, Left, Middle, and Right lane
   * @param {number[]} fswSymObject.max - max bottom left coordinate of the signbox space
   * @param {{symbol:string,coord:number[]}[]} fswSymObject.spatials - array of symbols with top-left coordinate placement
   * @param {string} fswSymObject.style - a style string for custom appearance
   * @returns {string} an fsw sign string
   * @example
   * fsw.compose.sign({
   *  sequence: ['S10011', 'S10019', 'S2e704', 'S2e748'],
   *  box: 'M',
   *  max: [525, 535],
   *  spatials: [
   *    {
   *      symbol: 'S2e748',
   *      coord: [483, 510]
   *    },
   *    {
   *      symbol: 'S10011',
   *      coord: [501, 466]
   *    },
   *    {
   *      symbol: 'S2e704',
   *      coord: [510, 500]
   *    },
   *    {
   *      symbol: 'S10019',
   *      coord: [476, 475]
   *    }
   *  ],
   *  style: '-C'
   * })
   * 
   * return 'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475-C'
   */
  sign: fswSignObject => {
    let box = typeof fswSignObject.box !== 'string' ? 'M' : (fswSignObject.box + 'M').match(re$4.box);
    const x = (fswSignObject.max && fswSignObject.max[0] || '').toString();
    const y = (fswSignObject.max && fswSignObject.max[1] || '').toString();
    const max = ((x + 'x' + y).match(re$4.coord) || [''])[0] || '';
    if (!max) return undefined;
    let prefix = '';

    if (fswSignObject.sequence && Array.isArray(fswSignObject.sequence)) {
      prefix = fswSignObject.sequence.map(key => (key.match(re$4.symbol) || [''])[0]).join('');
      prefix = prefix ? 'A' + prefix : '';
    }

    let signbox = '';

    if (fswSignObject.spatials && Array.isArray(fswSignObject.spatials)) {
      signbox = fswSignObject.spatials.map(spatial => {
        if (typeof spatial.symbol === 'string') {
          const symbol = (spatial.symbol.match(re$4.symbol) || [''])[0];

          if (symbol) {
            const x = (spatial.coord && spatial.coord[0] || '').toString();
            const y = (spatial.coord && spatial.coord[1] || '').toString();
            const coord = ((x + 'x' + y).match(re$4.coord) || [''])[0] || '';

            if (coord) {
              return symbol + coord;
            }
          }
        }

        return '';
      }).join('');
    }

    const styleStr = typeof fswSignObject.style === 'string' && (fswSignObject.style.match(re$3.full) || [''])[0] || '';
    return prefix + box + max + signbox + styleStr;
  }
};

/**
 * Array of numbers for kinds of symbols: writing, location, and punctuation.
 * @alias fsw.kind
 * @type {array}
 */

const kind$1 = [0x100, 0x37f, 0x387];
/**
 * Array of numbers for categories of symbols: hand, movement, dynamics, head, trunk & limb, location, and punctuation.
 * @alias fsw.category
 * @type {array}
 */

const category$1 = [0x100, 0x205, 0x2f7, 0x2ff, 0x36d, 0x37f, 0x387];
/**
 * Array of numbers for the 30 symbol groups.
 * @alias fsw.group
 * @type {array}
 */

const group$1 = [0x100, 0x10e, 0x11e, 0x144, 0x14c, 0x186, 0x1a4, 0x1ba, 0x1cd, 0x1f5, 0x205, 0x216, 0x22a, 0x255, 0x265, 0x288, 0x2a6, 0x2b7, 0x2d5, 0x2e3, 0x2f7, 0x2ff, 0x30a, 0x32a, 0x33b, 0x359, 0x36d, 0x376, 0x37f, 0x387];
/**
 * Object of symbol ranges with starting and ending numbers.
 * 
 *   { all, writing, hand, movement, dynamic, head, hcenter, vcenter, trunk, limb, location, punctuation }
 * @alias fsw.ranges
 * @type {object}
 */

const ranges$1 = {
  'all': [0x100, 0x38b],
  'writing': [0x100, 0x37e],
  'hand': [0x100, 0x204],
  'movement': [0x205, 0x2f6],
  'dynamic': [0x2f7, 0x2fe],
  'head': [0x2ff, 0x36c],
  'hcenter': [0x2ff, 0x36c],
  'vcenter': [0x2ff, 0x375],
  'trunk': [0x36d, 0x375],
  'limb': [0x376, 0x37e],
  'location': [0x37f, 0x386],
  'punctuation': [0x387, 0x38b]
};
/**
 * Function to test if symbol is of a certain type.
 * @function fsw.isType
 * @param {string} key - an FSW symbol key
 * @param {string} type - the name of a symbol range
 * @returns {boolean} is symbol of specified type
 * @example
 * fsw.isType('S10000', 'hand')
 * 
 * return true
 */

const isType$1 = (key, type) => {
  const parsed = parse$3.symbol(key);

  if (parsed.symbol) {
    const dec = parseInt(parsed.symbol.slice(1, 4), 16);
    const range = ranges$1[type];

    if (range) {
      return range[0] <= dec && range[1] >= dec;
    }
  }

  return false;
};

/**
 * Array of colors associated with the seven symbol categories.
 * @alias fsw.colors
 * @type {array}
 */

const colors$1 = ['#0000CC', '#CC0000', '#FF0099', '#006600', '#000000', '#884411', '#FF9900'];
/**
 * Function that returns the standardized color for a symbol.
 * @function fsw.colorize
 * @param {string} key - an FSW symbol key
 * @returns {string} name of standardized color for symbol
 * @example
 * fsw.colorize('S10000')
 * 
 * return '#0000CC'
 */

const colorize$1 = key => {
  const parsed = parse$3.symbol(key);
  let color = '#000000';

  if (parsed.symbol) {
    const dec = parseInt(parsed.symbol.slice(1, 4), 16);
    const index = category$1.findIndex(val => val > dec);
    color = colors$1[index < 0 ? 6 : index - 1];
  }

  return color;
};

/** The fsw module contains functions for handling Formal SignWriitng in ASCII (FSW) characters.
 * [FSW characters definition](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.2.1)
 * @module fsw
 */

var index$3 = /*#__PURE__*/Object.freeze({
  __proto__: null,
  re: re$4,
  parse: parse$3,
  compose: compose$3,
  kind: kind$1,
  category: category$1,
  group: group$1,
  ranges: ranges$1,
  isType: isType$1,
  colors: colors$1,
  colorize: colorize$1
});

/**
 * Object of regular expressions for FSW query strings
 * 
 *   { base, coord, var, symbol, range, item, list, prefix, signbox, full }
 * @alias fswquery.re
 * @type {object}
 */
let re$1 = {
  'base': '[123][0-9a-f]{2}',
  'coord': '(?:[0-9]{3}x[0-9]{3})?',
  'var': 'V[0-9]+'
};
re$1.symbol = `S${re$1.base}[0-5u][0-9a-fu]`;
re$1.range = `R${re$1.base}t${re$1.base}`;
re$1.item = `(?:${re$1.symbol}|${re$1.range})`;
re$1.list = `${re$1.item}(?:o${re$1.item})*`;
re$1.prefix = `(?:A(?:${re$1.list})+)?T`;
re$1.signbox = `(?:${re$1.list}${re$1.coord})*`;
re$1.full = `Q(${re$1.prefix})?(${re$1.signbox})?(${re$1.var})?(-?)`;

const parsePrefix$1 = text => {
  return {
    required: true,
    parts: text == 'T' ? undefined : text.match(new RegExp(`${re$1.list}`, 'g')).map(part => {
      if (part.includes('o')) {
        return ['or'].concat(part.match(new RegExp(`(${re$1.item})`, 'g')).map(part => part[0] == 'S' ? part : part.slice(1).split('t')));
      } else {
        return part[0] == 'S' ? part : part.slice(1).split('t');
      }
    })
  };
};

const parseSignbox$1 = text => {
  return text.match(new RegExp(`(${re$1.list}${re$1.coord})`, 'g')).map(part => {
    let coord, front;

    if (part.includes('x')) {
      coord = fsw2coord(part.slice(-7));
      front = part.slice(0, -7);
    } else {
      front = part;
    }

    if (front.includes('o')) {
      return {
        or: front.split('o').map(part => {
          if (part.includes('S')) {
            return part;
          } else {
            return part.slice(1).split('t');
          }
        }),
        coord,
        coord
      };
    } else if (front.includes('S')) {
      return {
        symbol: front,
        coord: coord
      };
    } else {
      return {
        range: front.slice(1).split('t'),
        coord: coord
      };
    }
  });
};
/**
 * Function to parse FSW query string to object
 * @function fswquery.parse
 * @param {string} fswQueryString - an FSW query string
 * @returns {object} elements of an FSW query string
 * @example
 * fswquery.parse('QAS10000S10500oS20500oR2fft304TS100uuR205t206oS207uu510x510V5-')
 * 
 * return {
 *   "query": true,
 *   "prefix": {
 *     "required": true,
 *     "parts": [
 *       "S10000",
 *       [
 *         "or",
 *         "S10500",
 *         "S20500",
 *         [
 *           "2ff",
 *           "304"
 *         ]
 *       ]
 *     ]
 *   },
 *   "signbox": [
 *     {
 *       "symbol": "S100uu"
 *     },
 *     {
 *       "or": [
 *         [
 *           "205",
 *           "206"
 *         ],
 *         "S207uu"
 *       ],
 *       "coord": [
 *         510,
 *         510
 *       ]
 *     }
 *   ],
 *   "variance": 5,
 *   "style": true
 * }
 */


const parse$2 = fswQueryString => {
  const query = typeof fswQueryString === 'string' ? fswQueryString.match(new RegExp(`^${re$1.full}`)) : undefined;
  return {
    'query': query ? true : undefined,
    'prefix': query && query[1] ? parsePrefix$1(query[1]) : undefined,
    'signbox': query && query[2] ? parseSignbox$1(query[2]) : undefined,
    'variance': query && query[3] ? parseInt(query[3].slice(1)) : undefined,
    'style': query && query[4] ? true : undefined
  };
};

/**
 * Function to compose FSW query string from object
 * @function fswquery.compose
 * @param {object} fswQueryObject - an object of style options
 * @param {boolean} fswQueryObject.query - required true for FSW query object
 * @param {object} fswQueryObject.prefix - an object for prefix elements
 * @param {boolean} fswQueryObject.prefix.required - true if sorting prefix is required
 * @param {(string|string[]|(string|string[])[])[]} fswQueryObject.prefix.parts - array of symbol strings, range arrays, and OR arrays of strings and range arrays
 * @param {({symbol:string,coord:number[]}|{range:string[],coord:number[]}|{or:(string|string[])[],coord:number[]})[]} fswQueryObject.signbox - array of objects for symbols, ranges, and list of symbols or ranges, with optional coordinates
 * @param {number} fswQueryObject.variance - amount that x or y coordinates can vary and find a match, defaults to 20
 * @param {boolean} fswQueryObject.style - boolean value for including style string in matches
 * @returns {string} FSW query string 
 * @example 
 * fswquery.compose({
 *  query: true,
 *  prefix: {
 *    required: true,
 *    parts: [
 *      'S10000',
 *      ['100', '204'],
 *      'S20500'
 *    ]
 *  },
 *  signbox: [
 *    { symbol: 'S20000' },
 *    {
 *      range: ['100', '105'],
 *      coord: [500, 500]
 *    }
 *  ],
 *  variance: 5,
 *  style: true
 * })
 *
 * return 'QAS10000R100t204S20500TS20000R100t105500x500V5-'
 */

const compose$2 = fswQueryObject => {
  if (!fswQueryObject || !fswQueryObject.query) {
    return undefined;
  }

  let query = 'Q';

  if (fswQueryObject.prefix && fswQueryObject.prefix.required) {
    if (Array.isArray(fswQueryObject.prefix.parts)) {
      query += 'A';
      query += fswQueryObject.prefix.parts.map(part => {
        if (typeof part === 'string') {
          return part;
        } else {
          if (Array.isArray(part) && part.length == 2) {
            return `R${part[0]}t${part[1]}`;
          } else if (Array.isArray(part) && part.length > 2 && part[0] == 'or') {
            part.shift();
            return part.map(part => {
              if (typeof part === 'string') {
                return part;
              } else {
                if (Array.isArray(part) && part.length == 2) {
                  return `R${part[0]}t${part[1]}`;
                }
              }
            }).join('o');
          }
        }
      }).join('');
    }

    query += 'T';
  }

  if (Array.isArray(fswQueryObject.signbox)) {
    query += fswQueryObject.signbox.map(part => {
      let out;

      if (part.or) {
        out = part.or.map(item => {
          if (typeof item === 'string') {
            return item;
          } else {
            if (Array.isArray(item) && item.length == 2) {
              return `R${item[0]}t${item[1]}`;
            }
          }
        }).join('o');
      } else if (part.symbol) {
        out = part.symbol;
      } else {
        if (part.range && Array.isArray(part.range) && part.range.length == 2) {
          out = `R${part.range[0]}t${part.range[1]}`;
        }
      }

      return out + (Array.isArray(part.coord) && part.coord.length == 2 ? part.coord.join('x') : '');
    }).join('');
  }

  query += fswQueryObject.style ? '-' : '';
  query = query.match(new RegExp(`^${re$1.full}`))[0];
  return query;
};

/**
 * Function to convert an FSW sign to a query string
 * 
 * For the flags parameter, use one or more of the following.
 * - A: exact symbol in temporal prefix
 * - a: general symbol in temporal prefix
 * - S: exact symbol in spatial signbox
 * - s: general symbol in spatial signbox
 * - L: spatial signbox symbol at location
 * @function fswquery.fsw2query
 * @param {string} fswSign - FSW sign
 * @param {string} flags - flags for query string creation
 * @returns {string} FSW query string
 * @example
 * fswquery.fsw2query('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475', 'ASL')
 * 
 * return 'QAS10011S10019S2e704S2e748TS2e748483x510S10011501x466S2e704510x500S10019476x475'
 */

const fsw2query = (fswSign, flags) => {
  let query = '';
  const parsed = parse$3.sign(fswSign);

  if (parsed.box) {
    const A_flag = flags.indexOf('A') > -1;
    const a_flag = flags.indexOf('a') > -1;
    const S_flag = flags.indexOf('S') > -1;
    const s_flag = flags.indexOf('s') > -1;
    const L_flag = flags.indexOf('L') > -1;

    if (A_flag || a_flag || S_flag || s_flag) {
      if ((A_flag || a_flag) && parsed.sequence) {
        query += 'A';
        query += parsed.sequence.map(sym => sym.slice(0, 4) + (a_flag ? 'uu' : sym.slice(4, 6))).join('');
        query += 'T';
      }

      if ((S_flag || s_flag) && parsed.spatials) {
        query += parsed.spatials.map(spatial => spatial.symbol.slice(0, 4) + (s_flag ? 'uu' : spatial.symbol.slice(4, 6)) + (L_flag ? spatial.coord.join('x') : '')).join('');
      }
    }

    return query ? "Q" + query : undefined;
  } else {
    return undefined;
  }
};

//needs rewritten, but it works

/**
 * Function to transform a range to a regular expression
 * @function fswquery.range
 * @param {(number|string)} min - either a decimal number or hexidecimal string
 * @param {(number|string)} max - either a decimal number or hexidecimal string
 * @param {boolean?} hex - if true, the regular expression will match a hexidecimal range
 * @returns {string} a regular expression that matches a range
 * @example
 * fswquery.range(500,750)
 * 
 * return '(([56][0-9][0-9])|(7[0-4][0-9])|(750))'
 * @example
 * fswquery.range('100','10e',true)
 * 
 * return '10[0-9a-e]'
 */
const range$1 = (min, max, hex) => {
  let pattern;
  let re;
  let diff;
  let tmax;
  let cnt;
  let minV;
  let maxV;

  if (!hex) {
    hex = '';
  }

  min = ("000" + min).slice(-3);
  max = '' + max;
  pattern = '';

  if (min === max) {
    return min;
  } //ending pattern will be series of connected OR ranges


  re = []; //first pattern+  10's don't match and the min 1's are not zero
  //odd number to 9

  if (!(min[0] == max[0] && min[1] == max[1])) {
    if (min[2] != '0') {
      pattern = min[0] + min[1];

      if (hex) {
        //switch for dex
        switch (min[2]) {
          case "f":
            pattern += 'f';
            break;

          case "e":
            pattern += '[ef]';
            break;

          case "d":
          case "c":
          case "b":
          case "a":
            pattern += '[' + min[2] + '-f]';
            break;

          default:
            switch (min[2]) {
              case "9":
                pattern += '[9a-f]';
                break;

              case "8":
                pattern += '[89a-f]';
                break;

              default:
                pattern += '[' + min[2] + '-9a-f]';
                break;
            }

            break;
        }

        diff = 15 - parseInt(min[2], 16) + 1;
        min = '' + (parseInt(min, 16) + diff).toString(16);
        re.push(pattern);
      } else {
        //switch for dex
        switch (min[2]) {
          case "9":
            pattern += '9';
            break;

          case "8":
            pattern += '[89]';
            break;

          default:
            pattern += '[' + min[2] + '-9]';
            break;
        }

        diff = 9 - min[2] + 1;
        min = '' + (min * 1 + diff);
        re.push(pattern);
      }
    }
  }

  pattern = ''; //if hundreds are different, get odd to 99 or ff

  if (min[0] != max[0]) {
    if (min[1] != '0') {
      if (hex) {
        //scrape to ff
        pattern = min[0];

        switch (min[1]) {
          case "f":
            pattern += 'f';
            break;

          case "e":
            pattern += '[ef]';
            break;

          case "d":
          case "c":
          case "b":
          case "a":
            pattern += '[' + min[1] + '-f]';
            break;

          case "9":
            pattern += '[9a-f]';
            break;

          case "8":
            pattern += '[89a-f]';
            break;

          default:
            pattern += '[' + min[1] + '-9a-f]';
            break;
        }

        pattern += '[0-9a-f]';
        diff = 15 - parseInt(min[1], 16) + 1;
        min = '' + (parseInt(min, 16) + diff * 16).toString(16);
        re.push(pattern);
      } else {
        //scrape to 99
        pattern = min[0];
        diff = 9 - min[1] + 1;

        switch (min[1]) {
          case "9":
            pattern += '9';
            break;

          case "8":
            pattern += '[89]';
            break;

          default:
            pattern += '[' + min[1] + '-9]';
            break;
        }

        pattern += '[0-9]';
        diff = 9 - min[1] + 1;
        min = '' + (min * 1 + diff * 10);
        re.push(pattern);
      }
    }
  }

  pattern = ''; //if hundreds are different, get to same

  if (min[0] != max[0]) {
    if (hex) {
      diff = parseInt(max[0], 16) - parseInt(min[0], 16);
      tmax = (parseInt(min[0], 16) + diff - 1).toString(16);

      switch (diff) {
        case 1:
          pattern = min[0];
          break;

        case 2:
          pattern = '[' + min[0] + tmax + ']';
          break;

        default:
          if (parseInt(min[0], 16) > 9) {
            minV = 'h';
          } else {
            minV = 'd';
          }

          if (parseInt(tmax, 16) > 9) {
            maxV = 'h';
          } else {
            maxV = 'd';
          }

          switch (minV + maxV) {
            case "dd":
              pattern += '[' + min[0] + '-' + tmax + ']';
              break;

            case "dh":
              diff = 9 - min[0]; //firs get up to 9

              switch (diff) {
                case 0:
                  pattern += '[9';
                  break;

                case 1:
                  pattern += '[89';
                  break;

                default:
                  pattern += '[' + min[0] + '-9';
                  break;
              }

              switch (tmax[0]) {
                case 'a':
                  pattern += 'a]';
                  break;

                case 'b':
                  pattern += 'ab]';
                  break;

                default:
                  pattern += 'a-' + tmax + ']';
                  break;
              }

              break;

            case "hh":
              pattern += '[' + min[0] + '-' + tmax + ']';
              break;
          }

      }

      pattern += '[0-9a-f][0-9a-f]';
      diff = parseInt(max[0], 16) - parseInt(min[0], 16);
      min = '' + (parseInt(min, 16) + diff * 256).toString(16);
      re.push(pattern);
    } else {
      diff = max[0] - min[0];
      tmax = min[0] * 1 + diff - 1;

      switch (diff) {
        case 1:
          pattern = min[0];
          break;

        case 2:
          pattern = '[' + min[0] + tmax + ']';
          break;

        default:
          pattern = '[' + min[0] + '-' + tmax + ']';
          break;
      }

      pattern += '[0-9][0-9]';
      min = '' + (min * 1 + diff * 100);
      re.push(pattern);
    }
  }

  pattern = ''; //if tens are different, get to same

  if (min[1] != max[1]) {
    if (hex) {
      diff = parseInt(max[1], 16) - parseInt(min[1], 16);
      tmax = (parseInt(min[1], 16) + diff - 1).toString(16);
      pattern = min[0];

      switch (diff) {
        case 1:
          pattern += min[1];
          break;

        case 2:
          pattern += '[' + min[1] + tmax + ']';
          break;

        default:
          if (parseInt(min[1], 16) > 9) {
            minV = 'h';
          } else {
            minV = 'd';
          }

          if (parseInt(tmax, 16) > 9) {
            maxV = 'h';
          } else {
            maxV = 'd';
          }

          switch (minV + maxV) {
            case "dd":
              pattern += '[' + min[1];

              if (diff > 1) {
                pattern += '-';
              }

              pattern += tmax + ']';
              break;

            case "dh":
              diff = 9 - min[1]; //firs get up to 9

              switch (diff) {
                case 0:
                  pattern += '[9';
                  break;

                case 1:
                  pattern += '[89';
                  break;

                default:
                  pattern += '[' + min[1] + '-9';
                  break;
              }

              switch (max[1]) {
                case 'a':
                  pattern += ']';
                  break;

                case 'b':
                  pattern += 'a]';
                  break;

                default:
                  pattern += 'a-' + (parseInt(max[1], 16) - 1).toString(16) + ']';
                  break;
              }

              break;

            case "hh":
              pattern += '[' + min[1];

              if (diff > 1) {
                pattern += '-';
              }

              pattern += (parseInt(max[1], 16) - 1).toString(16) + ']';
              break;
          }

          break;
      }

      pattern += '[0-9a-f]';
      diff = parseInt(max[1], 16) - parseInt(min[1], 16);
      min = '' + (parseInt(min, 16) + diff * 16).toString(16);
      re.push(pattern);
    } else {
      diff = max[1] - min[1];
      tmax = min[1] * 1 + diff - 1;
      pattern = min[0];

      switch (diff) {
        case 1:
          pattern += min[1];
          break;

        case 2:
          pattern += '[' + min[1] + tmax + ']';
          break;

        default:
          pattern += '[' + min[1] + '-' + tmax + ']';
          break;
      }

      pattern += '[0-9]';
      min = '' + (min * 1 + diff * 10);
      re.push(pattern);
    }
  }

  pattern = ''; //if digits are different, get to same

  if (min[2] != max[2]) {
    if (hex) {
      pattern = min[0] + min[1];
      diff = parseInt(max[2], 16) - parseInt(min[2], 16);

      if (parseInt(min[2], 16) > 9) {
        minV = 'h';
      } else {
        minV = 'd';
      }

      if (parseInt(max[2], 16) > 9) {
        maxV = 'h';
      } else {
        maxV = 'd';
      }

      switch (minV + maxV) {
        case "dd":
          pattern += '[' + min[2];

          if (diff > 1) {
            pattern += '-';
          }

          pattern += max[2] + ']';
          break;

        case "dh":
          diff = 9 - min[2]; //firs get up to 9

          switch (diff) {
            case 0:
              pattern += '[9';
              break;

            case 1:
              pattern += '[89';
              break;

            default:
              pattern += '[' + min[2] + '-9';
              break;
          }

          switch (max[2]) {
            case 'a':
              pattern += 'a]';
              break;

            case 'b':
              pattern += 'ab]';
              break;

            default:
              pattern += 'a-' + max[2] + ']';
              break;
          }

          break;

        case "hh":
          pattern += '[' + min[2];

          if (diff > 1) {
            pattern += '-';
          }

          pattern += max[2] + ']';
          break;
      }

      diff = parseInt(max[2], 16) - parseInt(min[2], 16);
      min = '' + (parseInt(min, 16) + diff).toString(16);
      re.push(pattern);
    } else {
      diff = max[2] - min[2];
      pattern = min[0] + min[1];

      switch (diff) {
        case 0:
          pattern += min[2];
          break;

        case 1:
          pattern += '[' + min[2] + max[2] + ']';
          break;

        default:
          pattern += '[' + min[2] + '-' + max[2] + ']';
          break;
      }

      min = '' + (min * 1 + diff);
      re.push(pattern);
    }
  }

  pattern = ''; //last place is whole hundred

  if (min[2] == '0' && max[2] == '0') {
    pattern = max;
    re.push(pattern);
  }

  pattern = '';
  cnt = re.length;

  if (cnt == 1) {
    pattern = re[0];
  } else {
    pattern = re.join(')|(');
    pattern = '((' + pattern + '))';
  }

  return pattern;
};

const regexSymbol = sym => {
  let segment = sym.slice(0, 4);
  let fill = sym.slice(4, 5);

  if (fill == 'u') {
    segment += '[0-5]';
  } else {
    segment += fill;
  }

  let rotate = sym.slice(5, 6);

  if (rotate == 'u') {
    segment += '[0-9a-f]';
  } else {
    segment += rotate;
  }

  return segment;
};

const regexRange$1 = symRange => {
  let from = symRange.slice(1, 4);
  let to = symRange.slice(5, 8);
  return 'S' + range$1(from, to, 'hex') + '[0-5][0-9a-f]';
}; //needs rewritten, but it works

/**
 * Function to transform an FSW query string to one or more regular expressions
 * @function fswquery.regex
 * @param {string} query - an FSW query string
 * @returns {string[]} an array of one or more regular expressions
 * @example
 * fswquery.regex('QS100uuS20500480x520')
 * 
 * return [
 *   '(?:A(?:S[123][0-9a-f]{2}[0-5][0-9a-f])+)?[BLMR]([0-9]{3}x[0-9]{3})(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*S100[0-5][0-9a-f][0-9]{3}x[0-9]{3}(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*',
 *   '(?:A(?:S[123][0-9a-f]{2}[0-5][0-9a-f])+)?[BLMR]([0-9]{3}x[0-9]{3})(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*S20500((4[6-9][0-9])|(500))x((5[0-3][0-9])|(540))(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*'
 * ]
 */


const regex$1 = query => {
  query = query.match(new RegExp(`^${re$1.full}`))[0];

  if (!query) {
    return '';
  }

  var matches;
  var matchesOr;
  var matched;
  var orList;
  var i;
  var j;
  var segment;
  var coord;
  var x;
  var y;
  var fuzz = 20;
  var q_style = '(' + re$3.full + ')?';
  var q_sortable;

  if (query == 'Q') {
    return [re$4.prefix + "?" + re$4.signbox];
  }

  if (query == 'Q-') {
    return [re$4.prefix + "?" + re$4.signbox + q_style];
  }

  if (query == 'QT') {
    return [re$4.prefix + re$4.signbox];
  }

  if (query == 'QT-') {
    return [re$4.prefix + re$4.signbox + q_style];
  }

  var segments = [];
  var sortable = query.indexOf('T') + 1;

  if (sortable) {
    q_sortable = '(A';
    var qat = query.slice(0, sortable);
    query = query.replace(qat, '');

    if (qat == 'QT') {
      q_sortable += '(' + re$4.symbol + ')+)';
    } else {
      matches = qat.match(new RegExp('(' + re$1.list + ')', 'g'));

      if (matches) {
        for (i = 0; i < matches.length; i += 1) {
          orList = [];
          matchesOr = matches[i].match(new RegExp('(' + re$1.symbol + '|' + re$1.range + ')', 'g'));

          if (matchesOr) {
            for (j = 0; j < matchesOr.length; j += 1) {
              matched = matchesOr[j].match(new RegExp(re$1.symbol));

              if (matched) {
                orList.push(regexSymbol(matched[0]));
              } else {
                orList.push(regexRange$1(matchesOr[j]));
              }
            }

            if (orList.length == 1) {
              q_sortable += orList[0];
            } else {
              q_sortable += '(' + orList.join('|') + ')';
            }
          }
        }

        q_sortable += '(' + re$4.symbol + ')*)';
      }
    }
  } //get the variance


  matches = query.match(new RegExp(re$1.var, 'g'));

  if (matches) {
    fuzz = matches.toString().slice(1) * 1;
  } //this gets all symbols and ranges with or without location


  matches = query.match(new RegExp(re$1.list + re$1.coord, 'g'));

  if (matches) {
    for (i = 0; i < matches.length; i += 1) {
      orList = [];
      matchesOr = matches[i].match(new RegExp('(' + re$1.symbol + '|' + re$1.range + ')', 'g'));

      if (matchesOr) {
        for (j = 0; j < matchesOr.length; j += 1) {
          matched = matchesOr[j].match(new RegExp(re$1.symbol));

          if (matched) {
            orList.push(regexSymbol(matched[0]));
          } else {
            orList.push(regexRange$1(matchesOr[j]));
          }
        }

        if (orList.length == 1) {
          segment = orList[0];
        } else {
          segment = '(' + orList.join('|') + ')';
        }
      }

      if (matches[i].includes('x')) {
        coord = fsw2coord(matches[i].slice(-7));
        x = coord[0];
        y = coord[1];
        segment += range$1(x - fuzz, x + fuzz);
        segment += 'x';
        segment += range$1(y - fuzz, y + fuzz);
      } else {
        segment += re$4.coord;
      } // add to general fsw word


      segment = re$4.signbox + segment + '(' + re$4.symbol + re$4.coord + ')*';

      if (sortable) {
        segment = q_sortable + segment;
      } else {
        segment = re$4.prefix + "?" + segment;
      }

      if (query.indexOf('-') > 0) {
        segment += q_style;
      }

      segments.push(segment);
    }
  }

  if (!segments.length) {
    if (query.indexOf('-') > 0) {
      segment += q_style;
    }

    segments.push(q_sortable + re$4.signbox);
  }

  return segments;
};

/**
 * Function that uses a query string to match signs from a string of text.
 * @function fswquery.results
 * @param {string} query - an FSW query string
 * @param {string} text - a string of text containing multiple signs
 * @returns {string[]} an array of FSW signs
 * @example
 * fswquery.results('QAS10011T','AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 AS15a21S15a07S21100S2df04S2df14M521x538S15a07494x488S15a21498x489S2df04498x517S2df14497x461S21100479x486 AS1f010S10018S20600M519x524S10018485x494S1f010490x494S20600481x476')
 * 
 * return [
 *   'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475'
 * ]
 */

const results$1 = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let re = regex$1(query);

  if (!re) {
    return [];
  }

  let i;

  for (i = 0; i < re.length; i += 1) {
    pattern = re[i];
    matches = text.match(new RegExp(pattern, 'g'));

    if (matches) {
      text = matches.join(' ');
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split(' ');
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
}; //needs rewritten, but it works

/**
 * Function that uses an FSW query string to match signs from multiple lines of text.
 * @function fswquery.lines
 * @param {string} query - an FSW query string
 * @param {string} text - multiple lines of text, each starting with an FSW sign
 * @returns {string[]} an array of lines of text, each starting with an FSW sign
 * @example
 * fswquery.lines('QAS10011T',`AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 line one
 * AS15a21S15a07S21100S2df04S2df14M521x538S15a07494x488S15a21498x489S2df04498x517S2df14497x461S21100479x486 line two
 * AS1f010S10018S20600M519x524S10018485x494S1f010490x494S20600481x476 line three`)
 * 
 * return [
 *   'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 line one'
 * ]
 */


const lines$1 = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let re = regex$1(query);

  if (!re) {
    return [];
  }

  let i;

  for (i = 0; i < re.length; i += 1) {
    pattern = re[i];
    pattern = '^' + pattern + '.*';
    matches = text.match(new RegExp(pattern, 'mg'));

    if (matches) {
      text = matches.join("\n");
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split("\n");
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
};

/** The fswquery module contains functions for handling the FSW query language.
 * [Query Language definition](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.6)
 * @module fswquery
 */

var index$2 = /*#__PURE__*/Object.freeze({
  __proto__: null,
  re: re$1,
  parse: parse$2,
  compose: compose$2,
  fsw2query: fsw2query,
  range: range$1,
  regex: regex$1,
  results: results$1,
  lines: lines$1
});

const parse$1 = {
  /**
   * Function to parse an swu symbol with optional coordinate and style string
   * @function swu.parse.symbol
   * @param {string} swuSym - an swu symbol
   * @returns {object} elements of swu symbol
   * @example
   * swu.parse.symbol('񀀁𝤆𝤆-C')
   * 
   * return {
   *  'symbol': '񀀁',
   *  'coord': [500, 500],
   *  'style': '-C'
   * }
   */
  symbol: swuSym => {
    const regex = `^(${re$2.symbol})(${re$2.coord})?(${re$3.full})?`;
    const symbol = typeof swuSym === 'string' ? swuSym.match(new RegExp(regex)) : undefined;
    return {
      'symbol': symbol ? symbol[1] : undefined,
      'coord': symbol && symbol[2] ? swu2coord(symbol[2]) : undefined,
      'style': symbol ? symbol[3] : undefined
    };
  },

  /**
    * Function to parse an swu sign with style string
    * @function swu.parse.sign
    * @param {string} swuSign - an swu sign
    * @returns {object} elements of swu sign
    * @example
    * swu.parse.sign('𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭-C')
    * 
    * return {
    *  sequence: ['񀀒','񀀚','񋚥','񋛩'],
    *  box: '𝠃',
    *  max: [525, 535],
    *  spatials: [
    *    {
    *      symbol: '񋛩',
    *      coord: [483, 510]
    *    },
    *    {
    *      symbol: '񀀒',
    *      coord: [501, 466]
    *    },
    *    {
    *      symbol: '񋚥',
    *      coord: [510, 500]
    *    },
    *    {
    *      symbol: '񀀚',
    *      coord: [476, 475]
    *    }
    *  ],
    *  style: '-C'
    * }
    */
  sign: swuSign => {
    const regex = `^(${re$2.prefix})?(${re$2.signbox})(${re$3.full})?`;
    const sign = typeof swuSign === 'string' ? swuSign.match(new RegExp(regex)) : undefined;

    if (sign) {
      return {
        'sequence': sign[1] ? sign[1].slice(2).match(/.{2}/g) : undefined,
        'box': sign[2].slice(0, 2),
        'max': swu2coord(sign[2].slice(2, 6)),
        'spatials': sign[2].length < 7 ? undefined : sign[2].slice(6).match(/(.{6})/g).map(m => {
          return {
            symbol: m.slice(0, 2),
            coord: swu2coord(m.slice(2))
          };
        }),
        'style': sign[3]
      };
    } else {
      return {};
    }
  }
};
/**
 * Function to encode SWU characters using the UTF-16 escape format.
 * @function swu.encode
 * @param {string} swu - SWU characters
 * @returns {string} UTF-16 escape format
 * @example
 * swu.encode('񀀁𝤆𝤆')
 * 
 * return '\\uD8C0\\uDC01\\uD836\\uDD06\\uD836\\uDD06'
 */

const encode = text => text.replace(/[\u007F-\uFFFF]/g, function (chr) {
  return "\\u" + ("0000" + chr.charCodeAt(0).toString(16)).substr(-4).toUpperCase();
});
/**
 * Function to decode UTF-16 escape format to SWU characters.
 * @function swu.decode
 * @param {string} encoded - UTF-16 escape format
 * @returns {string} SWU characters
 * @example
 * swu.decode('\\uD8C0\\uDC01\\uD836\\uDD06\\uD836\\uDD06')
 * 
 * return '񀀁𝤆𝤆'
 */


const decode = encoded => encoded.replace(/\\u([0-9A-F]{4})/g, function (match, chr) {
  return String.fromCharCode(parseInt(chr, 16));
});
/**
 * Function to decompose an SWU character into UTF-16 surrogate pairs.
 * @function swu.pair
 * @param {string} swuChar - an SWU character
 * @returns {string[]} an array of UTF-16 surrogate pairs
 * @example
 * swu.pair('񀀁')
 * 
 * return ['D8C0', 'DC01']
 */


const pair = swuChar => [swuChar.charCodeAt(0).toString(16).toUpperCase(), swuChar.charCodeAt(1).toString(16).toUpperCase()];

const compose$1 = {
  /**
   * Function to compose an swu symbol with optional coordinate and style string
   * @function swu.compose.symbol
   * @param {object} swuSymObject - an swu symbol object
   * @param {string} swuSymObject.symbol - an swu symbol key
   * @param {number[]} swuSymObject.coord - top-left coordinate of symbol with 500,500 center
   * @param {string} swuSymObject.style - a style string for custom appearance
   * @returns {string} an swu symbol string
   * @example
   * swu.compose.symbol({
   *  'symbol': '񀀁',
   *  'coord': [500, 500],
   *  'style': '-C'
   * })
   * 
   * return '񀀁𝤆𝤆-C'
   */
  symbol: swuSymObject => {
    if (typeof swuSymObject !== 'object' || swuSymObject === null) return undefined;

    if (typeof swuSymObject.symbol === 'string') {
      const symbol = (swuSymObject.symbol.match(re$2.symbol) || [''])[0];

      if (symbol) {
        const x = swuSymObject.coord && swuSymObject.coord[0] || '';
        const y = swuSymObject.coord && swuSymObject.coord[1] || '';
        const coord = x && y ? coord2swu([x, y]) : '';
        const styleStr = typeof swuSymObject.style === 'string' && (swuSymObject.style.match(re$3.full) || [''])[0] || '';
        return symbol + coord + styleStr;
      }
    }

    return undefined;
  },

  /**
    * Function to compose an swu sign with style string
    * @function swu.compose.sign
    * @param {string[]} swuSignObject.sequence - an ordered array of symbols
    * @param {string} swuSignObject.box - a choice BLMR: horizontal Box, Left, Middle, and Right lane
    * @param {number[]} swuSymObject.max - max bottom left coordinate of the signbox space
    * @param {{symbol:string,coord:number[]}[]} swuSymObject.spatials - array of symbols with top-left coordinate placement
    * @param {string} swuSymObject.style - a style string for custom appearance
    * @returns {string} an swu sign string
    * @example
    * swu.compose.sign({
    *  sequence: ['񀀒','񀀚','񋚥','񋛩'],
    *  box: '𝠃',
    *  max: [525, 535],
    *  spatials: [
    *    {
    *      symbol: '񋛩',
    *      coord: [483, 510]
    *    },
    *    {
    *      symbol: '񀀒',
    *      coord: [501, 466]
    *    },
    *    {
    *      symbol: '񋚥',
    *      coord: [510, 500]
    *    },
    *    {
    *      symbol: '񀀚',
    *      coord: [476, 475]
    *    }
    *  ],
    *  style: '-C'
    * })
    * 
    * return '𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭-C'
    */
  sign: swuSignObject => {
    if (typeof swuSignObject !== 'object' || swuSignObject === null) return undefined;
    let box = typeof swuSignObject.box !== 'string' ? '𝠃' : (swuSignObject.box + '𝠃').match(re$2.box);
    const x = swuSignObject.max && swuSignObject.max[0] || '';
    const y = swuSignObject.max && swuSignObject.max[1] || '';
    const max = x && y ? coord2swu([x, y]) : undefined;
    if (!max) return undefined;
    let prefix = '';

    if (swuSignObject.sequence && Array.isArray(swuSignObject.sequence)) {
      prefix = swuSignObject.sequence.map(key => (key.match(re$2.symbol) || [''])[0]).join('');
      prefix = prefix ? '𝠀' + prefix : '';
    }

    let signbox = '';

    if (swuSignObject.spatials && Array.isArray(swuSignObject.spatials)) {
      signbox = swuSignObject.spatials.map(spatial => {
        if (typeof spatial.symbol === 'string') {
          const symbol = (spatial.symbol.match(re$2.symbol) || [''])[0];

          if (symbol) {
            const x = spatial.coord && spatial.coord[0] || '';
            const y = spatial.coord && spatial.coord[1] || '';
            const coord = x && y ? coord2swu([x, y]) : '';

            if (coord) {
              return symbol + coord;
            }
          }
        }

        return '';
      }).join('');
    }

    const styleStr = typeof swuSignObject.style === 'string' && (swuSignObject.style.match(re$3.full) || [''])[0] || '';
    return prefix + box + max + signbox + styleStr;
  }
};

/**
 * Array of plane 4 code points for kinds of symbols: writing, location, and punctuation.
 * @alias swu.kind
 * @type {array}
 */

const kind = [0x40001, 0x4efa1, 0x4f2a1];
/**
 * Array of plane 4 code points for categories of symbols: hand, movement, dynamics, head, trunk & limb, location, and punctuation.
 * @alias swu.category
 * @type {array}
 */

const category = [0x40001, 0x461e1, 0x4bca1, 0x4bfa1, 0x4e8e1, 0x4efa1, 0x4f2a1];
/**
 * Array of plane 4 code points for the 30 symbol groups.
 * @alias swu.group
 * @type {array}
 */

const group = [0x40001, 0x40541, 0x40b41, 0x41981, 0x41c81, 0x43241, 0x43d81, 0x445c1, 0x44ce1, 0x45be1, 0x461e1, 0x46841, 0x46fc1, 0x47fe1, 0x485e1, 0x49301, 0x49e41, 0x4a4a1, 0x4afe1, 0x4b521, 0x4bca1, 0x4bfa1, 0x4c3c1, 0x4cfc1, 0x4d621, 0x4e161, 0x4e8e1, 0x4ec41, 0x4efa1, 0x4f2a1];
/**
 * Object of symbol ranges with starting and ending code points on plane 4.
 * 
 *   { all, writing, hand, movement, dynamic, head, hcenter, vcenter, trunk, limb, location, punctuation }
 * @alias swu.ranges
 * @type {object}
 */

const ranges = {
  'all': [0x40001, 0x4f480],
  'writing': [0x40001, 0x4efa0],
  'hand': [0x40001, 0x461e0],
  'movement': [0x461e1, 0x4bca0],
  'dynamic': [0x4bca1, 0x4bfa0],
  'head': [0x4bfa1, 0x4e8e0],
  'hcenter': [0x4bfa1, 0x4e8e0],
  'vcenter': [0x4bfa1, 0x4ec40],
  'trunk': [0x4e8e1, 0x4ec40],
  'limb': [0x4ec41, 0x4efa0],
  'location': [0x4efa1, 0x4f2a0],
  'punctuation': [0x4f2a1, 0x4f480]
};
/**
 * Function to test if symbol is of a certain type.
 * @function swu.isType
 * @param {string} swuSym - an SWU symbol character
 * @param {string} type - the name of a symbol range
 * @returns {boolean} is symbol of specified type
 * @example
 * swu.isType('񀀁', 'hand')
 * 
 * return true
 */

const isType = (swuSym, type) => {
  const parsed = parse$1.symbol(swuSym);

  if (parsed.symbol) {
    const code = swu2code(parsed.symbol);
    const range = ranges[type];

    if (range) {
      return range[0] <= code && range[1] >= code;
    }
  }

  return false;
};

/**
 * Array of colors associated with the seven symbol categories.
 * @alias swu.colors
 * @type {array}
 */

const colors = ['#0000CC', '#CC0000', '#FF0099', '#006600', '#000000', '#884411', '#FF9900'];
/**
 * Function that returns the standardized color for a symbol.
 * @function swu.colorize
 * @param {string} swuSym - an SWU symbol character
 * @returns {string} name of standardized color for symbol
 * @example
 * swu.colorize('񀀁')
 * 
 * return '#0000CC'
 */

const colorize = swuSym => {
  const parsed = parse$1.symbol(swuSym);
  let color = '#000000';

  if (parsed.symbol) {
    const code = swu2code(parsed.symbol);
    const index = category.findIndex(val => val > code);
    color = colors[index < 0 ? 6 : index - 1];
  }

  return color;
};

/** The swu module contains functions for handling SignWriitng in Unicode (SWu) characters.
 * [SWU characters definition](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.2.2)
 * @module swu
 */

var index$1 = /*#__PURE__*/Object.freeze({
  __proto__: null,
  re: re$2,
  parse: parse$1,
  encode: encode,
  decode: decode,
  pair: pair,
  compose: compose$1,
  kind: kind,
  category: category,
  group: group,
  ranges: ranges,
  isType: isType,
  colors: colors,
  colorize: colorize
});

/**
 * Object of regular expressions for SWU query strings
 * 
 *   { base, coord, var, symbol, range, item, list, prefix, signbox, full }
 * @alias swuquery.re
 * @type {object}
 */
let re = {
  'base': '(?:(?:\uD8C0[\uDC01-\uDFFF])|(?:[\uD8C1-\uD8FC][\uDC00-\uDFFF])|(?:\uD8FD[\uDC00-\uDC80]))',
  'coord': '(?:(?:\uD836[\uDC0C-\uDDFF]){2})?',
  'var': 'V[0-9]+'
};
re.symbol = `${re.base}f?r?`;
re.range = `R${re.base}${re.base}`;
re.item = `(?:${re.symbol}|${re.range})`;
re.list = `${re.item}(?:o${re.item})*`;
re.prefix = `(?:A(?:${re.list})+)?T`;
re.signbox = `(?:${re.list}${re.coord})*`;
re.full = `Q(${re.prefix})?(${re.signbox})?(${re.var})?(-?)`;

const parsePrefix = text => {
  return {
    required: true,
    parts: text == 'T' ? undefined : text.match(new RegExp(`(${re.list})`, 'g')).map(part => {
      if (part.includes('o')) {
        return ['or'].concat(part.match(new RegExp(`(${re.item})`, 'g')).map(part => part[0] != 'R' ? part : [part.slice(1, 3), part.slice(3, 5)]));
      } else {
        return part[0] != 'R' ? part : [part.slice(1, 3), part.slice(3, 5)];
      }
    })
  };
};

const parseSignbox = text => {
  return text.match(new RegExp(`(${re.list}${re.coord})`, 'g')).map(part => {
    let coord, front;
    coord = part.match(new RegExp(`${re$2.coord}`));

    if (coord) {
      coord = swu2coord(coord[0]);
      front = part.slice(0, -4);
    } else {
      coord = undefined;
      front = part;
    }

    if (front.includes('o')) {
      return {
        or: front.split('o').map(part => {
          if (!part.includes('R')) {
            return part;
          } else {
            return [part.slice(1, 3), part.slice(3, 5)];
          }
        }),
        coord,
        coord
      };
    } else if (!front.includes('R')) {
      return {
        symbol: front,
        coord: coord
      };
    } else {
      return {
        range: [front.slice(1, 3), front.slice(3, 5)],
        coord: coord
      };
    }
  });
};
/**
 * Function to parse SWU query string to object
 * @function swuquery.parse
 * @param {string} swuQueryString - an SWU query string
 * @returns {object} elements of an SWU query string
 * @example
 * swuquery.parse('QA񀀁R񀀁񆆑񆇡T񆀁R񀀁񀇱𝤆𝤆V5-')
 * 
 * return { 
 *   query: true,
 *   prefix: {
 *     required: true,
 *     parts: [
 *       '񀀁',
 *       ['񀀁', '񆆑'],
 *       '񆇡'
 *     ]
 *   },
 *   signbox: [
 *     { symbol: '񆀁' },
 *     {
 *       range: ['񀀁', '񀇱'],
 *       coord: [500, 500]
 *     }
 *   ],
 *   variance: 5,
 *   style: true 
 * }
 */


const parse = swuQueryString => {
  const query = typeof swuQueryString === 'string' ? swuQueryString.match(new RegExp(`^${re.full}`)) : undefined;
  return {
    'query': query ? true : undefined,
    'prefix': query && query[1] ? parsePrefix(query[1]) : undefined,
    'signbox': query && query[2] ? parseSignbox(query[2]) : undefined,
    'variance': query && query[3] ? parseInt(query[3].slice(1)) : undefined,
    'style': query && query[4] ? true : undefined
  };
};

/**
 * Function to compose SWU query string from object
 * @function swuquery.compose
 * @param {object} swuQueryObject - an object of style options
 * @param {boolean} swuQueryObject.query - required true for SWU query object
 * @param {object} swuQueryObject.prefix - an object for prefix elements
 * @param {boolean} swuQueryObject.prefix.required - true if sorting prefix is required
 * @param {(string|string[]|(string|string[])[])[]} swuQueryObject.prefix.parts - array of symbol strings, range arrays, and OR arrays of strings and range arrays
 * @param {({symbol:string,coord:number[]}|{range:string[],coord:number[]}|{or:(string|string[])[],coord:number[]})[]} swuQueryObject.signbox - array of objects for symbols, ranges, and list of symbols or ranges, with optional coordinates
 * @param {number} swuQueryObject.variance - amount that x or y coordinates can vary and find a match, defaults to 20
 * @param {boolean} swuQueryObject.style - boolean value for including style string in matches
 * @returns {string} SWU query string 
 * @example 
 * swuquery.compose({ 
  *   query: true,
  *   prefix: {
  *     required: true,
  *     parts: [
  *       '񀀁',
  *       ['񀀁', '񆆑'],
  *       '񆇡'
  *     ]
  *   },
  *   signbox: [
  *     { symbol: '񆀁' },
  *     {
  *       range: ['񀀁', '񀇱'],
  *       coord: [500, 500]
  *     }
  *   ],
  *   variance: 5,
  *   style: true 
  * })
  *
  * return 'QA񀀁R񀀁񆆑񆇡T񆀁R񀀁񀇱𝤆𝤆V5-'
  */

const compose = swuQueryObject => {
  if (!swuQueryObject || !swuQueryObject.query) {
    return undefined;
  }

  let query = 'Q';

  if (swuQueryObject.prefix && swuQueryObject.prefix.required) {
    if (Array.isArray(swuQueryObject.prefix.parts)) {
      query += 'A';
      query += swuQueryObject.prefix.parts.map(part => {
        if (typeof part === 'string') {
          return part;
        } else {
          if (Array.isArray(part) && part.length == 2) {
            return `R${part[0]}${part[1]}`;
          } else if (Array.isArray(part) && part.length > 2 && part[0] == 'or') {
            part.shift();
            return part.map(part => {
              if (typeof part === 'string') {
                return part;
              } else {
                if (Array.isArray(part) && part.length == 2) {
                  return `R${part[0]}${part[1]}`;
                }
              }
            }).join('o');
          }
        }
      }).join('');
    }

    query += 'T';
  }

  if (Array.isArray(swuQueryObject.signbox)) {
    query += swuQueryObject.signbox.map(part => {
      let out;

      if (part.or) {
        out = part.or.map(item => {
          if (typeof item === 'string') {
            return item;
          } else {
            if (Array.isArray(item) && item.length == 2) {
              return `R${item[0]}${item[1]}`;
            }
          }
        }).join('o');
      } else if (part.symbol) {
        out = part.symbol;
      } else {
        if (part.range && Array.isArray(part.range) && part.range.length == 2) {
          out = `R${part.range[0]}${part.range[1]}`;
        }
      }

      return out + (Array.isArray(part.coord) && part.coord.length == 2 ? coord2swu(part.coord) : '');
    }).join('');
  }

  query += swuQueryObject.style ? '-' : '';
  query = query.match(new RegExp(`^${re.full}`))[0];
  return query;
};

/**
 * Function to convert an SWU sign to a query string
 * 
 * For the flags parameter, use one or more of the following.
 * - A: exact symbol in temporal prefix
 * - a: general symbol in temporal prefix
 * - S: exact symbol in spatial signbox
 * - s: general symbol in spatial signbox
 * - L: spatial signbox symbol at location
 * @function swuquery.swu2query
 * @param {string} swuSign - SWU sign
 * @param {string} flags - flags for query string creation
 * @returns {string} SWU query string
 * @example
 * swuquery.swu2query('𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭', 'ASL')
 * 
 * return 'QA񀀒񀀚񋚥񋛩T񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭'
 */

const swu2query = (swuSign, flags) => {
  let query = '';
  const parsed = parse$1.sign(swuSign);

  if (parsed.box) {
    const A_flag = flags.indexOf('A') > -1;
    const a_flag = flags.indexOf('a') > -1;
    const S_flag = flags.indexOf('S') > -1;
    const s_flag = flags.indexOf('s') > -1;
    const L_flag = flags.indexOf('L') > -1;

    if (A_flag || a_flag || S_flag || s_flag) {
      if ((A_flag || a_flag) && parsed.sequence) {
        query += 'A';
        query += parsed.sequence.map(sym => sym + (a_flag ? 'fr' : '')).join('');
        query += 'T';
      }

      if ((S_flag || s_flag) && parsed.spatials) {
        query += parsed.spatials.map(spatial => spatial.symbol + (s_flag ? 'fr' : '') + (L_flag ? coord2swu(spatial.coord) : '')).join('');
      }
    }

    return query ? "Q" + query : undefined;
  } else {
    return undefined;
  }
};

/**
 * Function to transform a range of SWU characters to a regular expression
 * @function swuquery.range
 * @param {string} min - an SWU character
 * @param {string} max - an SWU character
 * @returns {string} a regular expression that matches a range of SWU characters
 * @example
 * swuquery.range('񀀁', '񀇡')
 * 
 * return '\uD8C0[\uDC01-\uDDE1]'
 * @example
 * swuquery.range('𝣔', '𝤸')
 * 
 * return '\uD836[\uDCD4-\uDD38]'
 */

const range = (min, max) => {
  if (min > max) return '';
  let pattern = '';
  let cnt;
  let re = [];
  min = pair(min);
  max = pair(max);
  if (min.length != 2 && max.length != 2) return ''; // HEAD // min[0] with range of min[1] to (DFFF or max[1])

  if (min[0] == max[0]) {
    if (min[1] == max[1]) {
      pattern = '\\u' + min[0] + '\\u' + min[1];
      re.push(pattern);
    } else {
      pattern = '\\u' + min[0] + '[\\u' + min[1] + '-\\u' + max[1] + ']';
      re.push(pattern);
    }
  } else {
    if (min[1] == "DFFF") {
      pattern = '\\u' + min[0] + '\\uDFFF';
    } else {
      pattern = '\\u' + min[0] + '[\\u' + min[1] + '-\\uDFFF]';
    }

    re.push(pattern); // BODY // range of (min[0] +1) to (max[0] -1) with all DC00-DFFF

    let diff = parseInt(max[0], 16) - parseInt(min[0], 16);

    if (diff == 2) {
      pattern = '\\u' + (parseInt(min[0], 16) + 1).toString(16).toUpperCase();
      pattern += '[\\uDC00-\\uDFFF]';
      re.push(pattern);
    }

    if (diff > 2) {
      pattern = '[';
      pattern += '\\u' + (parseInt(min[0], 16) + 1).toString(16).toUpperCase();
      pattern += '-\\u' + (parseInt(max[0], 16) - 1).toString(16).toUpperCase();
      pattern += '][\\uDC00-\\uDFFF]';
      re.push(pattern);
    } // TAIL // max[0] with range of DC00 to max[1]


    if (max[1] == "DC00") {
      pattern = '\\u' + max[0] + '\\uDC00';
    } else {
      pattern = '\\u' + max[0] + '[\\uDC00-\\u' + max[1] + ']';
    }

    re.push(pattern);
  }

  cnt = re.length;

  if (cnt == 1) {
    pattern = re[0];
  } else {
    pattern = re.join(')|(');
    pattern = '((' + pattern + '))';
  }

  return decode(pattern);
};

/**
 * Function to transform an SWU symbol with fill and rotation flags to a regular expression
 * @function swuquery.symbolRanges
 * @param {string} symbolFR - an SWU character with optional flags of 'f' for any fill and 'r' for any rotation
 * @returns {string} a regular expression that matches one or more ranges of SWU symbols
 * @example <caption>Match an exact symbol</caption>
 * swuquery.symbolRanges('񀀁')
 * 
 * return '\uD8C0\uDC01');
 * @example <caption>Match a symbol with any fill</caption>
 * swuquery.symbolRanges('񀀁f')
 * 
 * return '(\uD8C0\uDC01|\uD8C0\uDC11|\uD8C0\uDC21|\uD8C0\uDC31|\uD8C0\uDC41|\uD8C0\uDC51)'
 * @example <caption>Match a symbol with any rotation</caption>
 * swuquery.symbolRanges('񀀁r')
 * 
 * return '\uD8C0[\uDC01-\uDC10]'
 * @example <caption>Match a symbol with any fill or rotation</caption>
 * swuquery.symbolRanges('񀀁fr')
 * 
 * return '\uD8C0[\uDC01-\uDC60]'
 */

const symbolRanges = symbolFR => {
  let match = symbolFR.match(new RegExp(re.symbol));

  if (match) {
    let sym = match[0].slice(0, 2);
    let key = swu2key(sym);
    let base = key.slice(0, 4);
    let start, end;

    if (match[0].slice(-2) == 'fr') {
      start = key2swu(base + "00");
      end = key2swu(base + "5f");
      return range(start, end);
    } else if (match[0].slice(-1) == 'r') {
      start = key2swu(key.slice(0, 5) + '0');
      end = key2swu(key.slice(0, 5) + 'f');
      return range(start, end);
    } else if (match[0].slice(-1) == 'f') {
      let list = [0, 1, 2, 3, 4, 5].map(function (f) {
        return key2swu(base + f + key.slice(-1));
      });
      return "(" + list.join("|") + ")";
    } else {
      return sym;
    }
  } else {
    return '';
  }
};

const regexRange = symRange => {
  from = swu2key(symRange.slice(1, 3));
  to = swu2key(symRange.slice(-2));
  from = key2swu(from.slice(0, 4) + '00');
  to = key2swu(to.slice(0, 4) + '5f');
  return range(from, to);
}; //needs rewritten, but it works

/**
 * Function to transform an SWU query string to one or more regular expressions
 * @function swuquery.regex
 * @param {string} query - an SWU query string
 * @returns {string[]} an array of one or more regular expressions
 * @example
 * swuquery.regex('QA񀀒T')
 * 
 * return [
 *   '(\uD836\uDC00\uD8C0\uDC12((?:(?:\uD8C0[\uDC01-\uDFFF])|(?:[\uD8C1-\uD8FC][\uDC00-\uDFFF])|(?:\uD8FD[\uDC00-\uDC80])))*)\uD836[\uDC01-\uDC04](?:\uD836[\uDC0C-\uDDFF]){2}((?:(?:\uD8C0[\uDC01-\uDFFF])|(?:[\uD8C1-\uD8FC][\uDC00-\uDFFF])|(?:\uD8FD[\uDC00-\uDC80]))(?:\uD836[\uDC0C-\uDDFF]){2})*'
 * ]
 */


const regex = query => {
  query = query.match(new RegExp(`^${re.full}`))[0];

  if (!query) {
    return '';
  }

  let matches;
  let matchesOr;
  let matched;
  let orList;
  let i;
  let j;
  let coord;
  let segment;
  let x;
  let y;
  let fuzz = 20;
  let re_sym = re$2.symbol;
  let re_coord = re$2.coord;
  let re_signbox = re$2.box;
  let re_seq = re$2.sort;
  let re_word = re_signbox + re_coord + '(' + re_sym + re_coord + ')*';
  let re_sortable = '(' + re_seq + '(' + re_sym + ')+)';
  let q_var = '(V[0-9]+)';
  let q_style = '(' + re$3.full + ')?';
  let q_sortable;

  if (query == 'Q') {
    return [re$2.sign];
  }

  if (query == 'Q-') {
    return [re$2.sign + "(" + re$3.full + ")?"];
  }

  if (query == 'QT') {
    return [re$2.sortable];
  }

  if (query == 'QT-') {
    return [re$2.sortable + "(" + re$3.full + ")?"];
  }

  let segments = [];
  let sortable = query.indexOf('T') + 1;

  if (sortable) {
    q_sortable = '(' + re$2.sort;
    let qat = query.slice(0, sortable);
    query = query.replace(qat, '');

    if (qat == 'QT') {
      q_sortable += '(' + re_sym + ')+)';
    } else {
      matches = qat.match(new RegExp('(' + re.list + ')', 'g'));

      if (matches) {
        for (i = 0; i < matches.length; i += 1) {
          orList = [];
          matchesOr = matches[i].match(new RegExp('(' + re.symbol + '|' + re.range + ')', 'g'));

          if (matchesOr) {
            for (j = 0; j < matchesOr.length; j += 1) {
              matched = matchesOr[j].match(new RegExp(re.symbol));

              if (matched) {
                orList.push(symbolRanges(matched[0]));
              } else {
                orList.push(regexRange(matchesOr[j]));
              }
            }

            if (orList.length == 1) {
              q_sortable += orList[0];
            } else {
              q_sortable += '(' + orList.join('|') + ')';
            }
          }
        }

        q_sortable += '(' + re$2.symbol + ')*)';
      }
    }
  } //get the variance


  matches = query.match(new RegExp(q_var, 'g'));

  if (matches) {
    fuzz = matches.toString().slice(1) * 1;
  } //this gets all symbols and ranges with or without location


  matches = query.match(new RegExp(re.list + re.coord, 'g'));

  if (matches) {
    for (i = 0; i < matches.length; i += 1) {
      orList = [];
      matchesOr = matches[i].match(new RegExp('(' + re.symbol + '|' + re.range + ')', 'g'));

      if (matchesOr) {
        for (j = 0; j < matchesOr.length; j += 1) {
          matched = matchesOr[j].match(new RegExp(re.symbol));

          if (matched) {
            orList.push(symbolRanges(matched[0]));
          } else {
            orList.push(regexRange(matchesOr[j]));
          }
        }

        if (orList.length == 1) {
          segment = orList[0];
        } else {
          segment = '(' + orList.join('|') + ')';
        }
      }

      coord = matches[i].match(new RegExp(`${re$2.coord}`));

      if (coord) {
        coord = swu2coord(coord[0]);
        x = coord[0];
        y = coord[1];
        segment += range(num2swu(x - fuzz), num2swu(x + fuzz));
        segment += range(num2swu(y - fuzz), num2swu(y + fuzz));
      } else {
        segment += re$2.coord;
      } // add to general swu word


      segment = re_word + segment + '(' + re_sym + re_coord + ')*';

      if (sortable) {
        segment = q_sortable + segment;
      } else {
        segment = re_sortable + "?" + segment;
      }

      if (query.indexOf('-') > 0) {
        segment += q_style;
      }

      segments.push(segment);
    }
  }

  if (!segments.length) {
    if (query.indexOf('-') > 0) {
      segment += q_style;
    }

    segments.push(q_sortable + re_word);
  }

  return segments;
};

/**
 * Function that uses a query string to match signs from a string of text.
 * @function swuquery.results
 * @param {string} query - an SWU query string
 * @param {string} text - a string of text containing multiple signs
 * @returns {string[]} an array of SWU signs
 * @example
 * swuquery.results('QA񀀒T','𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭 𝠀񂇢񂇈񆙡񋎥񋎵𝠃𝤛𝤬񂇈𝤀𝣺񂇢𝤄𝣻񋎥𝤄𝤗񋎵𝤃𝣟񆙡𝣱𝣸 𝠀񅨑񀀙񆉁𝠃𝤙𝤞񀀙𝣷𝤀񅨑𝣼𝤀񆉁𝣳𝣮')
 * 
 * return [
 *   '𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭'
 * ]
 */

const results = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let res = regex(query);

  if (!res) {
    return [];
  }

  let i;

  for (i = 0; i < res.length; i += 1) {
    pattern = res[i];
    matches = text.match(new RegExp(pattern, 'g'));

    if (matches) {
      text = matches.join(' ');
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split(' ');
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
}; //needs rewritten, but it works

/**
 * Function that uses an SWU query string to match signs from multiple lines of text.
 * @function swuquery.lines
 * @param {string} query - an SWU query string
 * @param {string} text - multiple lines of text, each starting with an SWU sign
 * @returns {string[]} an array of lines of text, each starting with an SWU sign
 * @example
 * swuquery.lines('QA񀀒T',`𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭 line one
 * 𝠀񂇢񂇈񆙡񋎥񋎵𝠃𝤛𝤬񂇈𝤀𝣺񂇢𝤄𝣻񋎥𝤄𝤗񋎵𝤃𝣟񆙡𝣱𝣸 line two
 * 𝠀񅨑񀀙񆉁𝠃𝤙𝤞񀀙𝣷𝤀񅨑𝣼𝤀񆉁𝣳𝣮 line three`)
 * 
 * return [
 *   '𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭 line one'
 * ]
 */


const lines = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let res = regex(query);

  if (!res) {
    return [];
  }

  let i;

  for (i = 0; i < res.length; i += 1) {
    pattern = res[i];
    pattern = '^' + pattern + '.*';
    matches = text.match(new RegExp(pattern, 'mg'));

    if (matches) {
      text = matches.join("\n");
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split("\n");
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
};

/** The swuquery module contains functions for handling the SWU query language.
 * [Query Language definition](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-07.html#rfc.section.2.6)
 * @module swuquery
 */

var index = /*#__PURE__*/Object.freeze({
  __proto__: null,
  re: re,
  parse: parse,
  compose: compose,
  swu2query: swu2query,
  range: range,
  symbolRanges: symbolRanges,
  regex: regex,
  results: results,
  lines: lines
});

export { index$4 as convert, index$3 as fsw, index$2 as fswquery, index$5 as style, index$1 as swu, index as swuquery };

/* support ongoing development on https://patreon.com/signwriting */