ts-useful

Functions for animation, color transitions, ecliptic, bezier, decasteljau, curves, three dimensional curves, smooth scrolling, random range, randomItem, mobius index, vectors, physics vectors, and easing.

detect-collisions-quad-tree

Points, Lines, Boxes, Polygons (also hollow), Ellipses, Circles. RayCasting, offsets, rotation, scaling, bounding box padding, flags for static and ghost/trigger bodies.(based on https://github.com/Prozi/detect-collisions)