import type { WidgetFrameAppearance } from "../host/widget-frame-appearance.js";
import type { WidgetLayoutTransitionPolicy } from "../host/widget-layout-transition-plan.js";
export declare const VIEW_HOST_BOOTSTRAP_GLOBAL_KEY: "__getuserfeedback_view_host_bootstrap";
export declare const VIEW_HOST_BOOTSTRAP_PROTOCOL_VERSION: "v1";
export declare const VIEW_HOST_BOOTSTRAP_READY_EVENT_NAME: "getuserfeedback:view-host-bootstrap:ready";
export declare const VIEW_HOST_BOOTSTRAP_REQUIRED_FRAGMENT: "getuserfeedback-view-host-bootstrap=v1";
export declare const VIEW_HOST_BOOTSTRAP_CAPABILITIES: {
    readonly RESOLVED_FRAME_BORDER: "gx.view-host.frame-appearance.resolved-border.v1";
    readonly RESOLVED_FRAME_BORDER_RADIUS: "gx.view-host.frame-appearance.resolved-border-radius.v1";
    readonly RESOLVED_FRAME_BOX_SHADOW: "gx.view-host.frame-appearance.resolved-box-shadow.v1";
};
export type ViewHostBootstrapCapability = (typeof VIEW_HOST_BOOTSTRAP_CAPABILITIES)[keyof typeof VIEW_HOST_BOOTSTRAP_CAPABILITIES];
export declare const VIEW_HOST_PLACEMENTS: readonly ["docked-top", "docked-bottom"];
export type ViewHostPlacement = (typeof VIEW_HOST_PLACEMENTS)[number];
export type ViewHostConnectionConfig = {
    viewId: string;
    generation: number;
};
export type ViewHostConnection = {
    connect: () => Promise<void>;
    disconnect: () => Promise<void>;
    requestClose: () => Promise<void>;
    postViewSize: (measurement: ViewSizeReport) => Promise<void>;
    post: (message: unknown) => Promise<void>;
};
export type CreateViewHostConnection = (options: {
    config: ViewHostConnectionConfig;
    onError?: (error: Error) => void;
    onMessage?: (message: unknown) => void;
}) => ViewHostConnection;
/** The full report a view posts on the sizing channel. */
export type ViewSizeReport = {
    width: number;
    height: number;
    intrinsicWidth: number;
    viewportRevision?: string;
    frameAppearance?: WidgetFrameAppearance;
    placement?: ViewHostPlacement;
    transitionPolicy?: WidgetLayoutTransitionPolicy;
    layoutTransactionId?: string;
};
export type ViewHostBootstrapMarker = {
    protocolVersion: typeof VIEW_HOST_BOOTSTRAP_PROTOCOL_VERSION;
    capabilities?: readonly string[];
    createViewHostConnection: CreateViewHostConnection;
};
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