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eleventy.config.images.js
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eleventy.config.images.js
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import path from 'node:path'
import eleventyImage from '@11ty/eleventy-img'
export default function imagesConfig(eleventyConfig) {
function relativeToInputPath(inputPath, relativeFilePath) {
let split = inputPath.split('/')
split.pop()
return path.resolve(split.join(path.sep), relativeFilePath)
}
// Eleventy Image shortcode
// https://www.11ty.dev/docs/plugins/image/
eleventyConfig.addAsyncShortcode(
'image',
async function imageShortcode(src, alt, widths, sizes) {
// Full list of formats here: https://www.11ty.dev/docs/plugins/image/#output-formats
// Warning: Avif can be resource-intensive so take care!
let formats = ['avif', 'webp', 'auto']
let file = relativeToInputPath(this.page.inputPath, src)
let metadata = await eleventyImage(file, {
widths: widths || ['auto'],
formats,
outputDir: path.join(eleventyConfig.dir.output, 'img') // Advanced usage note: `eleventyConfig.dir` works here because we’re using addPlugin.
})
// TODO loading=eager and fetchpriority=high
let imageAttributes = {
alt,
sizes,
loading: 'lazy',
decoding: 'async'
}
return eleventyImage.generateHTML(metadata, imageAttributes)
}
)
}