import type { LogRecord, MutableLogSinkCounters } from './types.js';
export declare const MAX_ATTRIBUTES = 64;
export declare const MAX_VALUE_BYTES: number;
export declare const MAX_RECORD_BYTES: number;
/**
 * At most 64 attributes. Excess keys are dropped in ascending key order —
 * the same deterministic rule `capTotalSize` uses below, so a reader who has
 * learned one learns both.
 */
export declare function capAttributeCount(record: LogRecord, counters: MutableLogSinkCounters): LogRecord;
/**
 * Each string attribute value truncated at 8 KiB, tail replaced by
 * `…[truncated N bytes]` inside the value — self-describing, so no extra
 * flag field is minted for something the value already says about itself.
 */
export declare function truncateValues(record: LogRecord, counters: MutableLogSinkCounters): LogRecord;
/**
 * Total serialized record ≤ 16 KiB. Per-value and per-count caps are
 * independently satisfiable by a record with many small attributes, so this
 * is the last line and measures the whole record, not one dimension of it.
 * Attributes are dropped in ascending key order until it fits, and
 * `namzu.log.truncated = true` is set on what remains — the marker a
 * downstream reader needs to tell "this record is smaller than what was
 * logged" from "this is genuinely all there was".
 */
export declare function capTotalSize(record: LogRecord, counters: MutableLogSinkCounters): LogRecord;
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