Interpolates the values between two CSS strings, returning a new string.
var lerp =// -> '5px'// -> '75%'// -> '75px 22.5%'// -> '280 75% 37.5%'
lerp(str1, str2, alpha)
str2 based on the given
alpha (typically 0.0 to 1.0), returning a new string with interpolated values and their units. Numbers and units are expected to be tightly packed (e.g.
MIT, see LICENSE.md for details.