next/dist/esm/lib/metadata/generate/alternate.js

The React Framework

import React from "react";
import { MetaFilter } from "./meta";
function AlternateLink({ descriptor , ...props }) {
    if (!descriptor.url) return null;
    return /*#__PURE__*/ React.createElement("link", {
        ...props,
        ...descriptor.title && {
            title: descriptor.title
        },
        href: descriptor.url.toString()
    });
}
export function AlternatesMetadata({ alternates  }) {
    if (!alternates) return null;
    const { canonical , languages , media , types  } = alternates;
    return MetaFilter([
        canonical ? AlternateLink({
            rel: "canonical",
            descriptor: canonical
        }) : null,
        languages ? Object.entries(languages).flatMap(([locale, descriptors])=>{
            return descriptors == null ? void 0 : descriptors.map((descriptor)=>AlternateLink({
                    rel: "alternate",
                    hrefLang: locale,
                    descriptor
                }));
        }) : null,
        media ? Object.entries(media).flatMap(([mediaName, descriptors])=>{
            return descriptors == null ? void 0 : descriptors.map((descriptor)=>AlternateLink({
                    rel: "alternate",
                    media: mediaName,
                    descriptor
                }));
        }) : null,
        types ? Object.entries(types).flatMap(([type, descriptors])=>{
            return descriptors == null ? void 0 : descriptors.map((descriptor)=>AlternateLink({
                    rel: "alternate",
                    type,
                    descriptor
                }));
        }) : null
    ]);
}

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