nuxt-multi-cache/dist/runtime/helpers/cacheItem.js

SSR route, component and data cache for Nuxt.js

const DELIMITER = "<CACHE_ITEM>";
function encodeCacheItem(data, metadata) {
  return JSON.stringify(metadata) + DELIMITER + data;
}
function decodeCacheItem(cacheItem) {
  const delimiterPos = cacheItem.indexOf(DELIMITER);
  if (delimiterPos >= 0) {
    const metadata = JSON.parse(cacheItem.substring(0, delimiterPos));
    const data = cacheItem.substring(delimiterPos + DELIMITER.length);
    return { metadata, data };
  }
}
export function encodeRouteCacheItem(data, headers, statusCode, expires, staleIfErrorExpires, staleWhileRevalidate, cacheTags) {
  return encodeCacheItem(data, {
    headers,
    statusCode,
    expires,
    cacheTags,
    staleIfErrorExpires,
    staleWhileRevalidate
  });
}
export function decodeRouteCacheItem(cacheItem) {
  try {
    const decoded = decodeCacheItem(cacheItem);
    if (decoded) {
      return {
        ...decoded.metadata,
        data: decoded.data
      };
    }
  } catch (e) {
  }
}
export function encodeComponentCacheItem(data, payload, expires, cacheTags) {
  return encodeCacheItem(data, { payload, expires, cacheTags });
}
export function decodeComponentCacheItem(cacheItem) {
  try {
    const decoded = decodeCacheItem(cacheItem);
    if (decoded) {
      return {
        ...decoded.metadata,
        data: decoded.data
      };
    }
  } catch (e) {
  }
}
export function handleRawCacheData(data) {
  if (typeof data === "string") {
    return data;
  } else if (data instanceof Buffer) {
    return data.toString();
  }
}