function breakWord()

in modules/layers/src/text-layer/utils.js [120:179]
46 lines of code
12 McCabe index (conditional complexity)

function breakWord(text, maxWidth, iconMapping) {
  let rows = [];
  let rowStartCharIndex = 0;
  let groupStartCharIndex = 0;
  let rowOffsetLeft = 0;
  let group = null;

  for (let i = 0; i < text.length; i++) {
    // 1. break text into word groups
    //  - if current char is white space
    //  - else if next char is white space
    //  - else if reach last char
    if (text[i] === ' ') {
      group = text[i];
      groupStartCharIndex = i + 1;
    } else if ((i + 1 < text.length && text[i + 1] === ' ') || i + 1 === text.length) {
      group = text.substring(groupStartCharIndex, i + 1);
      groupStartCharIndex = i + 1;
    } else {
      group = null;
    }

    if (group) {
      // 2. break text into next row at maxWidth
      let groupWidth = getTextWidth(group, iconMapping);
      if (rowOffsetLeft + groupWidth > maxWidth) {
        const lastGroupStartIndex = groupStartCharIndex - group.length;
        if (rowStartCharIndex < lastGroupStartIndex) {
          rows.push(text.substring(rowStartCharIndex, lastGroupStartIndex));
          rowStartCharIndex = lastGroupStartIndex;
          rowOffsetLeft = 0;
        }

        // if a single text group is bigger than maxWidth, then `break-all`
        if (groupWidth > maxWidth) {
          const subGroups = breakAll(group, maxWidth, iconMapping);
          if (subGroups.rows.length > 1) {
            // add all the sub rows to results except last row
            rows = rows.concat(subGroups.rows.slice(0, subGroups.rows.length - 1));
          }
          // move reference to last row
          rowStartCharIndex = rowStartCharIndex + subGroups.lastRowStartCharIndex;
          groupWidth = subGroups.lastRowOffsetLeft;
        }
      }
      rowOffsetLeft += groupWidth;
    }
  }

  // last row
  if (rowStartCharIndex < text.length) {
    rows.push(text.substring(rowStartCharIndex));
  }

  return {
    rows,
    lastRowStartCharIndex: rowStartCharIndex,
    lastRowOffsetLeft: rowOffsetLeft
  };
}