/** A provider variant id: numeric on Printful/Printify, a string productUid on Gelato. */
export type VariantId = number | string;
export interface MatrixVariant {
    provider_variant_id: VariantId;
    color?: string;
    size?: string;
    cost?: number;
}
export interface RequestedVariant {
    color: string;
    sizes: string[];
    price?: number;
    /** Explicit ids (zipped with sizes) — overrides name resolution. */
    provider_variant_ids?: VariantId[];
}
export interface ResolvedVariant {
    name: string;
    color: string;
    size: string;
    provider_variant_id: VariantId;
    price?: number;
}
export interface ResolveResult {
    resolved: ResolvedVariant[];
    warnings: string[];
    unresolved: {
        color: string;
        size: string;
    }[];
}
export declare function resolveVariants(matrix: MatrixVariant[], requested: RequestedVariant[], productRefId?: string, defaultPrice?: number): ResolveResult;