import { type Component, type ViewportAnchorProvider, type ViewportAnchorRender } from "@gajae-code/tui";
import type { IrcObservationLedger } from "../irc-observation-ledger";
export declare const IRC_SIDEBAR_WIDTH_RATIO = 0.3;
export declare const IRC_SIDEBAR_MAX_RENDER_ROWS = 2048;
export declare const __ircSidebarPerfCounters: {
    enabled: boolean;
    projectionMemoHits: number;
    projectionMemoMisses: number;
    recordsVisited: number;
    sourceBytes: number;
    rows: number;
    styledCacheHits: number;
    styledCacheMisses: number;
    wrapCalls: number;
    snapshot(): {
        projectionMemoHits: number;
        projectionMemoMisses: number;
        recordsVisited: number;
        sourceBytes: number;
        rows: number;
        styledCacheHits: number;
        styledCacheMisses: number;
        wrapCalls: number;
    };
    enable(): void;
    disable(): void;
    reset(): void;
};
/** Computes transcript/sidebar widths while preserving at least half the terminal for the transcript. */
export declare function computeIrcSplitWidths(width: number): {
    leftWidth: number;
    separatorWidth: number;
    rightWidth: number;
};
/**
 * Resolves the single shared work-lane geometry. The left lane is used by both
 * transcript and todo content whenever the IRC lane is effective.
 */
export declare function computeIrcWorkLaneWidths(width: number, sidebarVisible: boolean): {
    leftWidth: number;
    separatorWidth: number;
    rightWidth: number;
};
export declare class IrcLeftLaneComponent implements Component {
    private readonly content;
    private readonly isSidebarVisible;
    constructor(content: Component, isSidebarVisible: (width: number) => boolean);
    render(width: number): string[];
    invalidate(): void;
}
type SemanticLine = Readonly<{
    kind: "header" | "body" | "elision" | "blank";
    text: string;
    sender?: string;
    recipient?: string;
    time?: string;
}>;
export type IrcSidebarSemanticProjection = Readonly<{
    token: string;
    lines: readonly SemanticLine[];
}>;
/** The authoritative bounded, display-neutral IRC sidebar projection. */
export declare function getIrcSidebarSemanticProjection(ledger: IrcObservationLedger, width: number): IrcSidebarSemanticProjection;
export declare function getIrcSidebarSemanticToken(ledger: IrcObservationLedger, width: number): string;
export interface IrcSidebarTheme {
    fg(color: "dim" | "accent", text: string): string;
    bold(text: string): string;
    readonly boxSharp: {
        readonly vertical: string;
    };
}
export type IrcSidebarThemeSource = IrcSidebarTheme | (() => IrcSidebarTheme);
/** Read-only IRC history alongside the active transcript. */
export declare class IrcSplitViewComponent implements ViewportAnchorProvider {
    #private;
    private readonly leftPane;
    private readonly ledger;
    private readonly componentTheme;
    constructor(leftPane: Component, ledger: IrcObservationLedger, componentTheme: IrcSidebarThemeSource);
    getRenderRevision(): bigint;
    get visible(): boolean;
    effectiveSidebarVisible(width?: number): boolean;
    setVisible(visible: boolean): void;
    invalidateTheme(): void;
    resetSource(): void;
    render(width: number): string[];
    renderWithViewportAnchors(width: number): ViewportAnchorRender;
    invalidate(): void;
}
export {};