75 lines
1.6 KiB
JavaScript
75 lines
1.6 KiB
JavaScript
// @ts-check
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import getSrcset from "./getSrcset.js";
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import getConfigOptions from "./getConfigOptions.js";
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import getFallbackImage from "./getFallbackImage.js";
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export default async function getImageSources(
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src,
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base,
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image,
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format,
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imageWidth,
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imagesizes,
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breakpoints,
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placeholder,
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imageFormat,
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formatOptions,
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fallbackFormat,
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includeSourceFormat,
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rest
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) {
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const calculatedConfigs = getConfigOptions(
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imageWidth,
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imagesizes,
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breakpoints,
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format,
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imageFormat,
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fallbackFormat,
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includeSourceFormat
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);
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const { formats, requiredBreakpoints } = calculatedConfigs;
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imagesizes = calculatedConfigs.imagesizes;
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const maxWidth = requiredBreakpoints[requiredBreakpoints.length - 1];
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const sliceLength = -(maxWidth.toString().length + 2);
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const sources = await Promise.all(
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formats.map(async (format) => {
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const srcset = await getSrcset(src, base, requiredBreakpoints, format, {
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...rest,
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...formatOptions[format],
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});
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const srcsets = srcset.split(", ");
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const srcObject =
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format === fallbackFormat
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? { src: srcsets[srcsets.length - 1].slice(0, sliceLength) }
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: {};
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return {
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...srcObject,
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format,
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srcset,
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};
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})
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);
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const sizes = {
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width: maxWidth,
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height: Math.round(maxWidth / rest.aspect),
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};
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const fallback = await getFallbackImage(
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src,
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placeholder,
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image,
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fallbackFormat,
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formatOptions,
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rest
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);
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return { sources, sizes, fallback, imagesizes };
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}
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