Function validateCacheKey

lib/models/per-bundle-addon-cache/addon-proxy.js:21–40

* Validates that a new cache key for a given tree type matches the previous * cache key for the same tree type. To opt-in to bundle addon caching for * a given addon it's assumed that it returns stable cache keys; specifically * this is because the interplay between bundle addon caching and `embe

(realAddonInstance, treeType, newCacheKey)

 * @throws {Error} If the new cache key doesn't match the previous cache key
 */
function validateCacheKey(realAddonInstance, treeType, newCacheKey) {
  let cacheKeyTracker = realAddonInstance[CACHE_KEY_FOR_TREE_TRACKER];

  if (!cacheKeyTracker) {
    cacheKeyTracker = {};
    realAddonInstance[CACHE_KEY_FOR_TREE_TRACKER] = cacheKeyTracker;
  }

  cacheKeyTracker[treeType] = treeType in cacheKeyTracker ? cacheKeyTracker[treeType] : newCacheKey;

  if (cacheKeyTracker[treeType] !== newCacheKey) {
    throw new Error(
      `[ember-cli] addon bundle caching can only be used on addons that have stable cache keys (previously \`${
        cacheKeyTracker[treeType]
      }\`, now \`${newCacheKey}\`; for addon \`${realAddonInstance.name}\` located at \`${
        realAddonInstance.packageRoot || realAddonInstance.root
      }\`)`
    );
  }
}

/**
 * Returns a proxy to a target with specific handling for the