span-word.js

class NodeMarkup {
  
  // class...
  
  spanWord({start, end}) {
    const space = /\s/
    const word = /[^\s]/

    while (start < this.text.length - 1 && space.test(this.text[start]))
      start++
    while (start > 0 && word.test(this.text[start - 1]))
      start--

    while (end > 0 && space.test(this.text[end]))
      end--
    while (end < this.text.length - 1 && word.test(this.text[end]))
      end++

    if (start >= end) {
      return false
      
    return {start, end}
  }
}