import type { FrameContext, LoaderszOrbOptions, OrbFrame } from './types.js';
/** Builds a complete frame from the current timeline context and resolved options. */
export type FrameBuilder = (context: FrameContext, options: Required<LoaderszOrbOptions>) => OrbFrame;
/** Shared Canvas lifecycle for the full loader and tree-shakeable single-mode loaders. */
export declare class CanvasLoader {
    private readonly frameBuilder;
    /** Canvas owned and resized by this instance. */
    readonly canvas: HTMLCanvasElement;
    /** The retained 2D context used to paint each generated frame. */
    readonly context: CanvasRenderingContext2D;
    /** Fully resolved current options. Prefer {@link setOptions} to changing this object directly. */
    options: Required<LoaderszOrbOptions>;
    private reducedMotion;
    private readonly motionQuery;
    private animationFrame;
    private colorOverride;
    private elapsed;
    private clockAnchor;
    private usesLegacyMotionListener;
    /** Creates, draws and (unless paused) starts one animation. */
    constructor(canvas: HTMLCanvasElement, options: LoaderszOrbOptions, frameBuilder: FrameBuilder);
    /** Applies a partial update, preserves the current timeline phase and redraws immediately. */
    setOptions(options: LoaderszOrbOptions): void;
    /** Permanently releases browser listeners and cancels a pending animation frame. */
    destroy(): void;
    private configureCanvas;
    private bindLifecycle;
    private draw;
    private canAnimate;
    private readonly syncAnimation;
    private readonly render;
    private readonly onDocumentVisibility;
    private readonly onMotionPreference;
    /** Resolves CSS colours, including inherited custom properties, once per option update. */
    private refreshColorOverride;
    private currentTime;
}
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