/**
 * Statistical analysis of color palettes to extract transformation patterns
 */
import { Effect } from "effect";
import type { OKLCHColor } from "../color/color.schema.js";
import type { StopPosition } from "../palette/palette.schema.js";
import type { StopTransformMap } from "../types/collections.js";
/** Transformation for a single stop relative to a reference stop */
export interface StopTransform {
    readonly lightnessMultiplier: number;
    readonly chromaMultiplier: number;
    readonly hueShiftDegrees: number;
}
/** Complete transformation pattern learned from example palettes */
export interface TransformationPattern {
    readonly name: string;
    readonly referenceStop: StopPosition;
    readonly transforms: StopTransformMap;
    readonly metadata: {
        readonly sourceCount: number;
        readonly confidence: number;
    };
}
/** An analyzed palette with OKLCH colors */
export interface AnalyzedPalette {
    readonly name: string;
    readonly stops: ReadonlyArray<{
        readonly position: StopPosition;
        readonly color: OKLCHColor;
    }>;
}
declare const PatternExtractionError_base: new <A extends Record<string, any> = {}>(args: import("effect/Types").Equals<A, {}> extends true ? void : { readonly [P in keyof A as P extends "_tag" ? never : P]: A[P]; }) => import("effect/Cause").YieldableError & {
    readonly _tag: "PatternExtractionError";
} & Readonly<A>;
/** Error when pattern extraction fails */
export declare class PatternExtractionError extends PatternExtractionError_base<{
    readonly message: string;
    readonly cause?: unknown;
}> {
}
/**
 * Extract transformation patterns from analyzed palettes
 *
 * Calculates ratios for each stop relative to the reference stop (500).
 * Returns Either.left if pattern extraction fails, Either.right with pattern otherwise.
 */
export declare const extractPatterns: (palettes: ReadonlyArray<AnalyzedPalette>, referenceStop?: StopPosition) => Effect.Effect<TransformationPattern, PatternExtractionError>;
export {};
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