I'm the one who requested the Vector3.reflect(normal) method to be added to the Three.js math library over a year ago. Everything looked fine at the time, but I ran into issues when trying to actually ...

/** Linearly interpolates between two values by a normalized value. This is the opposite of `inverse_lerp`. If the `from` and `to` arguments are of type `int` or `float`, the return value is a `float` ...