import { motionTokens } from '@fluentui/react-motion';
/**
 * Generates a motion atom object for a fade in or fade out.
 * @param direction - The functional direction of the motion: 'enter' or 'exit'.
 * @param duration - The duration of the motion in milliseconds.
 * @param easing - The easing curve for the motion. Defaults to `motionTokens.curveLinear`.
 * @param fromValue - The starting opacity value. Defaults to 0.
 * @returns A motion atom object with opacity keyframes and the supplied duration and easing.
 */ export const fadeAtom = ({ direction, duration, easing = motionTokens.curveLinear, fromValue = 0 })=>{
    const keyframes = [
        {
            opacity: fromValue
        },
        {
            opacity: 1
        }
    ];
    if (direction === 'exit') {
        keyframes.reverse();
    }
    return {
        keyframes,
        duration,
        easing
    };
};