import type { AccessorFactory, ComponentDef, ComponentId, ComponentOptions, Schema } from '@ecsia/schema';
import type { ColumnLayout } from '../memory/index.js';
export declare const UNREGISTERED: ComponentId;
export type DefKind = 'component' | 'relation-presence' | 'relation-overflow';
export interface ComponentRuntime<S extends Schema> extends ComponentDef<S> {
    id: ComponentId;
    accessorFactory: AccessorFactory<S> | null;
    readonly columnLayouts: readonly ColumnLayout[];
    readonly defKind: DefKind;
    readonly restrictedToMainThread: boolean;
    /** True iff the component carries >=1 rich (sidecar-backed) field. */
    readonly hasRichFields: boolean;
}
export declare function defineComponent<const S extends Schema, const B extends string = never, const N extends string = never>(schema: S, options: ComponentOptions & ({
    readonly name: N;
    readonly brand?: B;
} | {
    readonly brand: B;
    readonly name?: N;
})): ComponentDef<S, [B] extends [never] ? N : B>;
export declare function defineTag<const N extends string>(name: N): ComponentDef<Record<never, never>, N>;
export declare function registerComponentId<S extends Schema>(def: ComponentDef<S>, id: ComponentId): void;
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