import { JupyterFrontEndPlugin } from '@jupyterlab/application';
import { Token } from '@lumino/coreutils';
import { ISignal } from '@lumino/signaling';
import { type IEditor } from './editors';
/**
 * A read-only, observable view of the launcher's terminal editors: xtralab's
 * built-ins (Neovim, Vim) merged with the user's `editors` setting, sorted by
 * rank, with disabled entries removed.
 */
export interface IEditorRegistry {
    /**
     * The full merged editor list (disabled entries already removed). The
     * terminals panel uses it to badge a row for any configured editor that is
     * running, and to tell the server which editor commands to detect.
     */
    readonly editors: IEditor[];
    /**
     * The single editor tile the launcher shows: the first editor, by rank, whose
     * command is on `$PATH` (Neovim before Vim by default), or `null` when none
     * qualifies.
     */
    readonly current: IEditor | null;
    /**
     * Emitted whenever {@link editors} or {@link current} changes (the user
     * edited the `editors` setting). Consumers that read on demand can ignore it.
     */
    readonly changed: ISignal<IEditorRegistry, void>;
}
/**
 * DI token for {@link IEditorRegistry}. Provided by `xtralab:editor-registry`
 * and consumed — optionally — by `xtralab:launcher` (for its tile) and
 * `xtralab:terminals` (to badge running editors with their logo).
 */
export declare const IEditorRegistry: Token<IEditorRegistry>;
/**
 * Provides {@link IEditorRegistry}: merges xtralab's built-in editors with the
 * user's `editors` setting, probes the server's `$PATH` to resolve the launcher
 * tile, and re-runs both on a settings change.
 *
 * `activate` awaits the first probe before returning, so a consumer reading
 * {@link IEditorRegistry.current} on activation sees a resolved tile.
 */
export declare const editorRegistryPlugin: JupyterFrontEndPlugin<IEditorRegistry>;