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import type {
ResolvedMetadata,
ResolvedViewport,
} from './types/metadata-interface'
const TYPE_URL = '__METADATA_URL'
function replacer(_key: string, val: any) {
// 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: string, val: any) {
if (typeof val === 'object' && val !== null && val._type === TYPE_URL) {
return new URL(val.value)
}
return val
}
export function cloneMetadata<T extends ResolvedMetadata | ResolvedViewport>(
metadata: T
): T {
const jsonString = JSON.stringify(metadata, replacer)
return JSON.parse(jsonString, reviver)
}
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