import type { StreamId } from './registry.js';
/**
 * Versioning. A single integer top-level format version plus per-stream schema versions. Readers
 * skip unknown streams/fields, so bumping one stream's schema never breaks an older reader, and
 * adding a browser signal is "add a stream", not "break the file".
 *
 * Pre-1.0 the wire format is a DRAFT: it may change without migration shims while we iterate on
 * the schema against real captures. The first frozen version will document migrations here.
 *
 * v2 (draft) added capture-level `metadata` (a skippable section) and the `customEvents` stream.
 * v3 (draft) added structured element attribution (ElementRef tag/id/classes/name), the long-task
 * container `name`, and the element-timing spec completion (`name`/`id`/`intersectionRect` + the
 * PaintTimingMixin pair) — bumping the lcp/cls/interactions/longTasks/elementTiming stream schemas.
 */
export declare const FORMAT_VERSION = 3;
/**
 * Per-stream schema versions. Typed as a total Record<StreamId, number> so that adding a StreamId
 * without versioning it is a compile error — the registry and the schema can't silently drift.
 */
export declare const STREAM_SCHEMA_VERSIONS: Record<StreamId, number>;
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