/** Browser authentication and optional content-size reporting for Adapt plugins. */
/**
 * Get the authentication token from the URL hash.
 * @param isDevelopment If true, returns a dev token for local development
 */
export declare function getToken(isDevelopment?: boolean): string;
export type AdaptResizeMessage = {
    type: 'adapt-resize';
    resizeId: string;
    viewportWidth: number;
    height: number;
} | {
    type: 'adapt-resize';
    resizeId: string;
    height: null;
};
export interface InitOptions {
    /** Report intrinsic content dimensions to the host. Default: true. */
    resize?: boolean;
}
/**
 * Enable content-size reporting once per document. The host decides whether to
 * apply measurements. Use resize: false for viewport-height layouts.
 * Themes use CSS color-scheme and prefers-color-scheme independently of init.
 */
export declare function init(options?: InitOptions): void;
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