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CleverImage Astro component for my responsive images
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--- | |
import { ImageGenerator } from "ImageGenerator"; | |
interface Props { | |
imgPath: string, | |
alt: string, | |
sizes: { width: number; height: number }[], | |
withWebp?: boolean, | |
loading?: "eager" | "lazy" | null, | |
breakpoints?: {maxWidth: number, imgWidth: number}[] | |
} | |
const { imgPath, alt, sizes, withWebp, loading, breakpoints } = Astro.props; | |
const biggestSize = sizes.reduce((prev, current) => {return (prev.width > current.width) ? prev : current;}); | |
const generatedSrcset: string[] = []; | |
const generatedSizes: string[] = []; | |
if (import.meta.env.PROD) { | |
let allBreakpointSizes: number[] | null = null; | |
if (breakpoints) { | |
allBreakpointSizes = breakpoints.map(bp => bp.imgWidth); | |
} | |
sizes.sort((a, b) => a.width - b.width); | |
for (const size of sizes) { | |
if (allBreakpointSizes && allBreakpointSizes.indexOf(size.width) === -1) {continue;} | |
((withWebp ?? true) ? [true, false] : [false]).forEach((isWebp) => { | |
generatedSrcset.push(`${ImageGenerator.generateName(imgPath, size, isWebp)} ${size.width}w`); | |
}); | |
} | |
if (breakpoints) { | |
for (const breakpoint of breakpoints) { | |
if (breakpoint.maxWidth === 0) { | |
generatedSizes.push(`${breakpoint.imgWidth}px`); | |
} else { | |
generatedSizes.push(`(max-width: ${breakpoint.maxWidth}px) ${breakpoint.imgWidth}px`); | |
} | |
} | |
} | |
} | |
--- | |
{import.meta.env.PROD && ( | |
<img | |
src={ImageCompressorIntegration.generateName(imgPath, biggestSize)} | |
alt={alt} | |
srcset={generatedSrcset.join(", ")} | |
sizes={generatedSizes.join(", ")} | |
loading={loading} | |
/> | |
) | |
} | |
{import.meta.env.DEV && <img src={imgPath} alt={alt} loading={loading} />} |
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