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A collection of utility functions for animations.

There is a newer version: 10.17.0

const isNumber = (value) => typeof value === "number";
const isString = (value) => typeof value === "string";
const isEasingGenerator = (easing) => typeof easing === "object" &&
    Boolean(easing.createAnimation);
const isCubicBezier = (easing) => Array.isArray(easing) && isNumber(easing[0]);
const isEasingList = (easing) => Array.isArray(easing) && !isNumber(easing[0]);

export { isCubicBezier, isEasingGenerator, isEasingList, isNumber, isString };