81 lines
2.2 KiB
TypeScript
81 lines
2.2 KiB
TypeScript
"use client"
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import type { MotionProps } from "motion/react"
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import type { CSSProperties, ElementType, JSX } from "react"
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import { cn } from "@/lib/utils"
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import { motion } from "motion/react"
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import { memo, useMemo } from "react"
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type MotionHTMLProps = MotionProps & Record<string, unknown>
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// Cache motion components at module level to avoid creating during render
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const motionComponentCache = new Map<
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keyof JSX.IntrinsicElements,
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React.ComponentType<MotionHTMLProps>
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>()
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const getMotionComponent = (element: keyof JSX.IntrinsicElements) => {
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let component = motionComponentCache.get(element)
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if (!component) {
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component = motion.create(element)
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motionComponentCache.set(element, component)
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}
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return component
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}
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export interface TextShimmerProps {
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children: string
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as?: ElementType
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className?: string
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duration?: number
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spread?: number
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}
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const ShimmerComponent = ({
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children,
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as: Component = "p",
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className,
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duration = 2,
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spread = 2,
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}: TextShimmerProps) => {
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const MotionComponent = useMemo(
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() => getMotionComponent(Component as keyof JSX.IntrinsicElements),
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[Component]
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)
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const dynamicSpread = useMemo(
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() => (children?.length ?? 0) * spread,
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[children, spread]
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)
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return (
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// eslint-disable-next-line react-hooks/static-components -- component is cached at module level via motionComponentCache
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<MotionComponent
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animate={{ backgroundPosition: "0% center" }}
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className={cn(
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"relative inline-block bg-[length:250%_100%,auto] bg-clip-text text-transparent",
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"[--bg:linear-gradient(90deg,#0000_calc(50%-var(--spread)),var(--color-background),#0000_calc(50%+var(--spread)))] [background-repeat:no-repeat,padding-box]",
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className
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)}
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initial={{ backgroundPosition: "100% center" }}
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style={
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{
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"--spread": `${dynamicSpread}px`,
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backgroundImage:
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"var(--bg), linear-gradient(var(--color-muted-foreground), var(--color-muted-foreground))",
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} as CSSProperties
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}
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transition={{
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duration,
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ease: "linear",
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repeat: Number.POSITIVE_INFINITY,
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}}
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>
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{children}
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</MotionComponent>
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)
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}
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export const Shimmer = memo(ShimmerComponent)
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