Function assign

packages/next/src/shared/lib/router/utils/querystring.ts:49–64

(
  target: URLSearchParams,
  ...searchParamsList: URLSearchParams[]
)

}

export function assign(
  target: URLSearchParams,
  ...searchParamsList: URLSearchParams[]
): URLSearchParams {
  for (const searchParams of searchParamsList) {
    for (const key of searchParams.keys()) {
      target.delete(key)
    }

    for (const [key, value] of searchParams.entries()) {
      target.append(key, value)
    }
  }

  return target
}