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import { type ClassValue, clsx } from 'clsx'
import { cubicOut } from 'svelte/easing'
import { twMerge } from 'tailwind-merge'
import type { TransitionConfig } from 'svelte/transition'
export function cn(...inputs: ClassValue[]) {
return twMerge(clsx(inputs))
}
type FlyAndScaleParams = {
y?: number
x?: number
start?: number
duration?: number
}
export function flyAndScale(
node: Element,
params: FlyAndScaleParams = { y: -8, x: 0, start: 0.95, duration: 150 }
): TransitionConfig {
const style = getComputedStyle(node)
const transform = style.transform === 'none' ? '' : style.transform
const scaleConversion = (valueA: number, scaleA: [number, number], scaleB: [number, number]) => {
const [minA, maxA] = scaleA
const [minB, maxB] = scaleB
const percentage = (valueA - minA) / (maxA - minA)
const valueB = percentage * (maxB - minB) + minB
return valueB
}
const styleToString = (style: Record<string, number | string | undefined>): string => {
return Object.keys(style).reduce((str, key) => {
if (style[key] === undefined) return str
return str + `${key}:${style[key]};`
}, '')
}
return {
duration: params.duration ?? 200,
delay: 0,
css: (t) => {
const y = scaleConversion(t, [0, 1], [params.y ?? 5, 0])
const x = scaleConversion(t, [0, 1], [params.x ?? 0, 0])
const scale = scaleConversion(t, [0, 1], [params.start ?? 0.95, 1])
return styleToString({
transform: `${transform} translate3d(${x}px, ${y}px, 0) scale(${scale})`,
opacity: t
})
},
easing: cubicOut
}
}
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