/**
 * Strongly-typed identifier for layers.
 */
export type LayerId = string;
/**
 * Blend modes for layer composition
 * Maps to standard Canvas 2D composite operations
 */
export type BlendMode = "source-over" | "multiply" | "screen" | "overlay" | "darken" | "lighten" | "color-dodge" | "color-burn" | "hard-light" | "soft-light" | "difference" | "exclusion" | "hue" | "saturation" | "color" | "luminosity";
/**
 * Immutable Data Transfer Object (DTO) capturing a layer's state at an exact point in time.
 */
export interface LayerSnapshot {
    readonly id: LayerId;
    readonly name: string;
    readonly visible: boolean;
    readonly opacity: number;
    readonly blendMode: BlendMode;
    readonly alphaLock: boolean;
    readonly locked: boolean;
    readonly width: number;
    readonly height: number;
}
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