/**
 * ComponentDef -- adaptive component primitive for constraint-based rendering.
 *
 * A component binds a boundary, styles, and named slots into a single
 * content-addressed unit. Content-addressed via FNV-1a.
 *
 * @module
 */
import type { ContentAddress } from './brands.js';
import type { Boundary } from './boundary.js';
import type { Style } from './style.js';
/** Per-slot configuration on a component — whether the slot must be provided, plus optional description. */
export interface SlotConfig {
    /** Default: false. */
    readonly required?: boolean;
    readonly description?: string;
}
interface ComponentDef<B extends Boundary.Shape = Boundary.Shape, SlotNames extends readonly string[] = readonly string[]> {
    readonly _tag: 'ComponentDef';
    readonly _version: 1;
    readonly id: ContentAddress;
    readonly name: string;
    readonly boundary?: B;
    readonly styles: Style.Shape<B>;
    readonly slots: {
        readonly [K in SlotNames[number]]: SlotConfig;
    };
    readonly defaultSlot?: SlotNames[number];
}
interface ComponentFactory {
    make<B extends Boundary.Shape, const SN extends readonly [string, ...string[]] = readonly ['children']>(config: {
        readonly name: string;
        readonly boundary?: B;
        readonly styles: Style.Shape<B>;
        /** Default: an implied single 'children' slot with defaultSlot 'children'. */
        readonly slots?: {
            readonly [K in SN[number]]: SlotConfig;
        };
        readonly defaultSlot?: SN[number];
    }): ComponentDef<B, SN>;
}
/**
 * Component — the content-addressed unit that binds a {@link Boundary}, a
 * {@link Style}, and named slots into a single declaration compilers can
 * target. The optional boundary gates style variants; the slots describe
 * the consumer-facing API.
 */
export declare const Component: ComponentFactory;
export declare namespace Component {
    /** Structural shape of a component definition, parameterized by its boundary and slot names. */
    type Shape<B extends Boundary.Shape = Boundary.Shape, SN extends readonly string[] = readonly string[]> = ComponentDef<B, SN>;
}
export {};
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