next/dist/esm/lib/metadata/clone-metadata.js

The React Framework

const TYPE_URL = '__METADATA_URL';
function replacer(_key, val) {
    // clone URL as string but recover it as URL
    if (val instanceof URL) {
        return {
            _type: TYPE_URL,
            value: val.href
        };
    }
    return val;
}
function reviver(_key, val) {
    if (typeof val === 'object' && val !== null && val._type === TYPE_URL) {
        return new URL(val.value);
    }
    return val;
}
export function cloneMetadata(metadata) {
    const jsonString = JSON.stringify(metadata, replacer);
    return JSON.parse(jsonString, reviver);
}

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