import type { PropTransform } from '../interfaces/document';
export interface PropOptions {
    /** Whether the field is required. Defaults to `true`; set `false` for optional fields. */
    required?: boolean;
    /** A literal default, or a zero-arg factory invoked per write when the field is missing. */
    default?: unknown;
    /** Enum object the value is drawn from (passed through to hydration/metadata). */
    enum?: object;
    /** Shorthand for a unique single-field index on this property. */
    unique?: boolean;
    /** Shorthand for a single-field index (`true`/`1` ascending, `-1` descending). */
    index?: boolean | 1 | -1;
    /** Value transforms applied on write (`to`) and read (`from`). */
    transform?: PropTransform;
    /** Explicit design type, when `emitDecoratorMetadata` cannot infer it. */
    type?: unknown;
}
/**
 * Declare a persisted field. Captures reflected type + options into the owning
 * document's `DocumentMetadata.props`, which drives hydration (6a), validation
 * (6b), and derived indexes.
 */
export declare const Prop: (options?: PropOptions) => PropertyDecorator;
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