Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | 8x 8x 8x 144x 20x 134x 8x 31x 31x 1x 1x 31x 31x 31x 217x 31x 21x 10x 10x 10x | import { memo, useCallback, useMemo, useRef } from "react";
const DEFAULT_SIZES = "100vw";
const DEFAULT_QUALITY = 80;
const BREAKPOINTS = [320, 480, 640, 800, 1024, 1280, 1536] as const;
interface ResponsiveImageProps {
storageKey: string;
alt: string;
width: number;
height: number;
sizes?: string;
quality?: number;
loading?: "lazy" | "eager";
fetchPriority?: "high" | "low" | "auto";
className?: string;
}
function buildTransformUrl(
base: string,
storageKey: string,
opts: { w: number; f: string; q: number },
): string {
return `${base}/cdn-cgi/image/w=${opts.w},f=${opts.f},q=${opts.q}/${storageKey}`;
}
function buildSrcset(
base: string,
storageKey: string,
breakpoints: number[],
format: string,
quality: number,
): string {
return breakpoints
.map(
(bp) =>
`${buildTransformUrl(base, storageKey, { w: bp, f: format, q: quality })} ${bp}w`,
)
.join(", ");
}
export const ResponsiveImage = memo(function ResponsiveImage({
storageKey,
alt,
width,
height,
sizes = DEFAULT_SIZES,
quality = DEFAULT_QUALITY,
loading = "lazy",
fetchPriority,
className,
}: ResponsiveImageProps) {
const containerRef = useRef<HTMLDivElement>(null);
const handleLoad = useCallback(() => {
Eif (containerRef.current) {
containerRef.current.style.backgroundImage = "";
}
}, []);
// Resolution order:
// 1. VITE_IMAGE_URL — set in deployed envs (dev/preview/prod) to the
// Cloudflare-CDN-fronted bucket origin (e.g. https://images-dev...).
// 2. ${VITE_API_URL}/api/images — local dev fallback. The API serves
// R2 objects directly at /api/images/:path. Without this fallback,
// `bun run dev` (no --mode flag) leaves imageBase empty and every
// uploaded preview renders a broken /cdn-cgi/... URL.
// 3. /api/images — same-origin last resort.
const imageBase =
import.meta.env.VITE_IMAGE_URL ||
`${import.meta.env.VITE_API_URL || ""}/api/images`;
// Local mode strips Cloudflare cdn-cgi transforms (those only work on the
// CDN-fronted host). Detect localhost OR a same-origin /api/images path.
const isLocal =
imageBase.includes("localhost") ||
imageBase.startsWith("/api/images") ||
imageBase.includes("127.0.0.1");
const activeBreakpoints = useMemo(
() => BREAKPOINTS.filter((bp) => bp <= width * 2),
[width],
);
if (isLocal) {
return (
<div
ref={containerRef}
style={{
aspectRatio: `${width} / ${height}`,
}}
>
<img
src={`${imageBase}/${storageKey}`}
alt={alt}
width={width}
height={height}
loading={loading}
{...(fetchPriority ? { fetchPriority } : {})}
className={className}
/>
</div>
);
}
const lqipUrl = `${imageBase}/cdn-cgi/image/w=16,q=30,f=webp/${storageKey}`;
const fallbackSrc = buildTransformUrl(imageBase, storageKey, {
w: width,
f: "auto",
q: quality,
});
return (
<div
ref={containerRef}
style={{
backgroundImage: `url(${lqipUrl})`,
backgroundSize: "cover",
aspectRatio: `${width} / ${height}`,
}}
>
<picture>
<source
type="image/avif"
srcSet={buildSrcset(
imageBase,
storageKey,
activeBreakpoints,
"avif",
quality,
)}
sizes={sizes}
/>
<source
type="image/webp"
srcSet={buildSrcset(
imageBase,
storageKey,
activeBreakpoints,
"webp",
quality,
)}
sizes={sizes}
/>
<img
src={fallbackSrc}
alt={alt}
width={width}
height={height}
loading={loading}
{...(fetchPriority ? { fetchPriority } : {})}
className={className}
onLoad={handleLoad}
/>
</picture>
</div>
);
});
|