@shopify/app-bridge-host/store/reducers/embeddedApp/modal/actions.d.ts

App Bridge Host contains middleware and components that are meant to be consumed by the app's host. The middleware and `Frame` component are responsible for facilitating messages posted between the client and host, and used to act on actions sent from the

export declare const LEGACY_MODAL_SET_HEIGHT = "PRIVATE_APP::LEGACY::MODAL_SET_HEIGHT";
export interface LegacyModalSetHeightAction {
    readonly type: typeof LEGACY_MODAL_SET_HEIGHT;
    payload: number;
}