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FilterStorageHelper.localStorageEvictionTiers property

Boost-owned keys eligible for eviction, cheapest-to-lose tier first.

Each entry matches by exact key or regular expression. Override to protect a key a shop depends on, or to add keys written by custom code.

Signature:

protected get localStorageEvictionTiers(): ReadonlyArray<ReadonlyArray<string | RegExp>>;

Example

Keep recently viewed products even under storage pressure:

get localStorageEvictionTiers() {
  return super.localStorageEvictionTiers.map((tier) =>
    tier.filter((entry) => entry !== 'boostSDRecentlyViewedProduct')
  );
}