/**
 * SeverityPolicy — the one home for severity mapping + the gate's error/warning
 * predicate (north-star §5.9, release 2.13.0).
 *
 * Severity lives at two levels: AUTHOR severity (`error | warning`, what a fitness
 * check or graph rule declares) and WIRE severity (the 4-level
 * {@link SignalSeverity} on the `Signal`). Before 2.13.0 the author→wire map was
 * duplicated (fitness's `mapFindingSeverity` + `liftSeverity`) and the graph
 * override (`applySeverityOverride`) lived apart, while the gate's error/warning
 * counting was inlined in `buildSignalEnvelope`. This consolidates them so a
 * change to severity semantics is one edit and every consumer agrees.
 *
 * The mappings are byte-identical to what they replace: `error → high`,
 * `warning → medium` (UP, never collapsing, so the error-rung / warning-rung
 * bucketing reproduces the historical counts), and the override clamps only when
 * explicitly set (ADR-0005 / baseline-neutral).
 */
import { type SignalSeverity } from '../types/signal.js';
/** The 2-level severity a check/rule author declares (mapped UP to the wire level). */
export type AuthorSeverity = 'error' | 'warning';
/**
 * The central severity policy. A frozen namespace (not per-run state) — pure
 * functions over the severity types, the single source of truth for author→wire
 * mapping, the override clamp, and the error/warning predicate.
 */
export declare const SeverityPolicy: Readonly<{
    /** Author `error|warning` → wire severity: `error → high`, `warning → medium`. */
    readonly liftAuthorSeverity: (severity: AuthorSeverity) => SignalSeverity;
    /**
     * Clamp a base wire severity by an opt-in override (`error → high`,
     * `warning → medium`); returns `base` unchanged when no override is set
     * (baseline-neutral, ADR-0005).
     */
    readonly applyOverride: (base: SignalSeverity, override: AuthorSeverity | undefined) => SignalSeverity;
    /** True when a severity is on the error rung (`critical`/`high`) — the gate predicate. */
    readonly isError: (severity: SignalSeverity) => boolean;
}>;
//# sourceMappingURL=severity-policy.d.ts.map