code: function lineHeightScale(lineHeight, power, ratio, bases) {
    const baseHeight = lineHeight / modularScale(power, ratio, bases)
    let realHeight = baseHeight
  
    while (realHeight < 1) {
      realHeight += baseHeight
    }
  
    return realHeight
  }
docs: Calculate a unitless line height for a given modular scale.
  
  @param {number} lineHeight The base, unitless line height.
  @param {number} power The power of the modular scale value.
  @param {number} ratio The modular scale ratio.
  @param {Array} bases One or more modular scale bases.
  @returns {number}