Bug In GLTF Animation Export


(i + 1 < length) is buggy behavior
Imagine if i = 0 and length = 1, this will evaluate to false, which will go to the else statement where
prevKeyFrame = keyFrames[i - 1] → prevKeyFrame will be null, and therefore prevKeyFrame.value will throw an error

Noticed this after it broke a GLTF export on my side

Adding @Drigax

@mrlooi thanks for discovering this!

Would you like to make a PR to address this?