React-native-animatable: this._transforms.forEach in not a function when setting a (non animated) transform on an animated image

[gmlion]

I'm setting a transform: translation on an Animated.Image, but animatable crashes:

Unhandled JS Exception: this._transforms.forEach is not a function. (In 'this._transforms.forEach', 'this._transforms.forEach' is undefined)

AnimatedImplementation.js:1408

[gmlion]

It was an error on my side

[JulianKingman]

In case anyone else is having this issue, you need to declare the transform property you want to animate, not the "transform" property.
For this: style={{transform: ['scale': ...]}}
This: transition="scale"
Not this: transition="transform"
This should be in the docs somewhere, or at least an example.