/**
 * Nexus DevRadar — introspection sink for the Studio WebSocket (dev only).
 *
 * The CLI registers a sink (`registerDevRadarSink`) that forwards to `broadcast()`.
 * When no sink is registered, all emits are no-ops (production / `nexus start`).
 */
/** v1 wire protocol — keep in sync with `packages/cli/src/studio.ts` `StudioEvent` (incl. security:report). */
export type DevRadarEvent = {
    type: 'action:call';
    payload: ActionCallPayload;
} | {
    type: 'action:result';
    payload: ActionResultPayload;
} | {
    type: 'action:redirect';
    payload: ActionRedirectPayload;
} | {
    type: 'action:error';
    payload: ActionErrorPayload;
} | {
    type: 'devtools:pretext';
    payload: PretextProfilePayload;
} | {
    type: 'security:audit';
    payload: SecurityAuditPayload;
} | {
    type: 'security:report';
    payload: SecurityReportPayload;
} | {
    type: 'rune:telemetry';
    payload: RuneTelemetryPayload;
};
export interface ActionCallPayload {
    id: string;
    name: string;
    islandId?: string;
    input: unknown;
    timestamp: number;
    idempotencyKey?: string;
}
export interface ActionResultPayload {
    id: string;
    name: string;
    output: unknown;
    duration: number;
    cached: boolean;
}
export interface ActionRedirectPayload {
    id: string;
    name: string;
    location: string;
    status: number;
    duration: number;
}
export interface ActionErrorPayload {
    id: string;
    name: string;
    error: string;
    code?: string;
    duration: number;
}
export interface PretextProfilePayload {
    /** Route pattern, e.g. `/news/[slug]` */
    pattern: string;
    durationMs: number;
    /** Layout + page modules that ran nxPretext in parallel */
    parallelCount: number;
}
export interface SecurityAuditPayload {
    kind: 'csrf_blocked' | 'rate_limited' | 'replay' | 'ghost_wall' | 'shield_action' | 'vault_updated' | 'build_mismatch' | 'custom';
    message: string;
    action?: string;
}
/** Studio "Security Report" checklist (snapshot when `nexus dev` connects DevRadar). */
export interface SecurityReportCheck {
    id: string;
    label: string;
    status: 'pass' | 'warn' | 'info';
}
export interface SecurityReportPayload {
    hardened: boolean;
    checks: SecurityReportCheck[];
}
/** Placeholder for client-originated rune stats (future: bridge from runtime). */
export interface RuneTelemetryPayload {
    runeId: string;
    updatesPerSecond: number;
    label?: string;
}
/** Register the Studio broadcast function (called once from `nexus dev`). */
export declare function registerDevRadarSink(fn: (event: DevRadarEvent) => void): () => void;
export declare function emitDevRadar(event: DevRadarEvent): void;
/** Deep-clone-ish sanitizer for telemetry (arguments / results). */
export declare function sanitizeTelemetryValue(value: unknown, depth?: number): unknown;
export declare function newTraceId(): string;
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