/**
 * Largest step level that `blocksByStep` will serve, and the largest frame size used when building
 * block summaries.
 *
 * A block summary stores every `SignedHydratedBlockWithHashMeta` in its frame, so its size grows
 * linearly with the frame's block count. `StepSizes[blocksMaxStep]` is therefore the size of the
 * largest single cached summary object. `blocksByStep` rejects requests for step levels above this
 * cap so that no response can exceed that largest single summary.
 *
 * Tune this as the large-object storage backing the summary map matures.
 */
export declare const blocksMaxStep = 3;
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