props.md
In animejs: R Bindings to the 'Anime.js' Animation Library

anime_keyframes() rejects malformed keyframes

Code
  anime_keyframes(list(from = 0))
Condition
  Error in `anime_keyframes()`:
  ! Each keyframe must be a bare atomic value or a list with a to element.
  x Keyframe 1 is a list.

Code
  anime_keyframes(0, c(1, 2))
Condition
  Error in `anime_keyframes()`:
  ! Each keyframe must be a bare atomic value or a list with a to element.
  x Keyframe 2 is a double vector.

Code
  anime_keyframes(list(to = 1, ease = 42))
Condition
  Error in `anime_keyframes()`:
  ! `ease` must be an <anime_easing> object or an Anime.js easing name string.
  x You supplied a number.
  i See `anime_easing()` for the available constructors.

anime_from_to() validates ease

Code
  anime_from_to(0, 1, ease = 42)
Condition
  Error in `anime_from_to()`:
  ! `ease` must be an <anime_easing> object or an Anime.js easing name string.
  x You supplied a number.
  i See `anime_easing()` for the available constructors.