docs: function trimHandle(str, chars = ' ', position) {
  
      if (typeof str !== 'string') {
          return;
      }
  
      let cs = chars;
  
      if (Valid.isArray(chars)) {
          cs = chars.join('');
      }
  
      const startReg = new RegExp(`^[${cs}]*`, 'g'),
          endReg = new RegExp(`[${cs}]*$`, 'g');
  
      if (position === 'start') {
          return str.replace(startReg, '');
      } else if (position === 'end') {
          return str.replace(endReg, '');
      }
  
      return str.replace(startReg, '').replace(endReg, '');
  
  }