/**
 * The memo comparator for one tab's content cell (TabContent in Sidebar.tsx).
 *
 * Kept as a pure module so the "what re-renders a tab cell" contract is unit
 * testable: geometry/store re-renders of the Sidebar shell must NOT reconcile
 * every mounted tab (xterm/CodeMirror/FileTree subtrees — issue #315), while
 * locale switches (localeRevision), tab-registry updates (tabsVersion), and
 * a tab MOVING BETWEEN PANES (paneId — onOpenDiff closes over the pane id,
 * and moveTab reuses the SAME tab object, so only the pane id identifies the
 * move) must re-render the cell.
 */
import type { SidebarTab } from './state.ts';
/** The fields whose change invalidates a tab cell's memo. Anything a cell's
 *  render (or its callbacks) depends on must be listed here. */
export interface TabContentMemoKey {
    tab: SidebarTab;
    /** The pane this tab currently lives in. onOpenDiff closes over it, and
     *  moveTab reuses the same tab object when the tab moves panes — without
     *  comparing paneId the cell would keep the source pane's callback. */
    paneId: string;
    sessionId: string;
    cwd: string | undefined;
    visible: boolean;
    expanded: string[];
    /** Files highlighted in the file tree (the "Show in folder" reveal). */
    revealed: string[];
    localeRevision: string;
    tabsVersion: number;
    /** When the tab is a pinned virtual tab (injected from another session),
     *  this overrides `tab.id` passed to the tab descriptor's component so
     *  TerminalView connects to the home session's PTY by the original id.
     *  Undefined for regular tabs (no override). */
    effectiveTabId: string | undefined;
}
/** True when the cell may skip a re-render (all render-affecting fields
 *  unchanged). Callback/context identities are deliberately ignored: their
 *  captured dependencies are stable or covered by the compared fields
 *  (onReferenceFile → sessionId/cwd, onSubagentJump/onToggleDir → stable
 *  refs/closures, onOpenDiff → paneId). */
export declare function tabContentCompare(prev: TabContentMemoKey, next: TabContentMemoKey): boolean;