/**
 * Options for defining a property.
 */
export interface PropertyOptions {
    type?: NumberConstructor | StringConstructor | BooleanConstructor | ArrayConstructor | ObjectConstructor;
    attribute?: string | false;
    reflect?: boolean;
    default?: any;
}
/**
 * Property declarations for a component.
 */
export interface PropertyDeclarations {
    [key: string]: PropertyOptions;
}
/**
 * Signal key prefix — used to look up a property's backing signal on an instance.
 * e.g.  element.__sig_count   → Signal<number> for property "count"
 */
export declare const SIGNAL_KEY_PREFIX = "__sig_";
export declare const LOCAL_SIGNAL_KEY_PREFIX = "__local_sig_";
/**
 * Creates signal-backed property accessors for `static properties`.
 *
 * - Getter returns the PLAIN VALUE — `this.count` → `5`, not a Signal.
 *   This preserves natural JS idioms: `this.count === 0`, `this.count * 2`, etc.
 * - Setter writes to the backing signal.
 * - The signal can be retrieved via `element.__sig_<name>` for subscriptions.
 * - `requestUpdate()` is wired up in `MiuraElement.connectedCallback()` via
 *   `_subscribePropertySignals()`, so DOM updates are triggered automatically.
 */
export declare function createProperties(instance: any, properties: PropertyDeclarations): void;
/**
 * Creates signal-backed property accessors for `static state()`.
 *
 * Identical to `static properties` in reactivity — setting a state property
 * notifies only the DOM bindings that reference it (fine-grained, no full
 * re-render). The ONLY difference from `static properties` is that state
 * properties are NEVER reflected to HTML attributes and are not added to
 * `observedAttributes` — they are internal to the component.
 */
export declare function createStateProperties(instance: any, properties: PropertyDeclarations): void;
/**
 * Creates signal-backed local field accessors for `@signal`.
 *
 * These fields expose plain property syntax (`this.count = 1`, `this.count`)
 * while keeping a backing Signal available for direct fine-grained bindings.
 *
 * Unlike `static properties` / `static state()`, these are intentionally not
 * auto-subscribed to `requestUpdate()`. Consumers should bind their backing
 * signal directly when they want fine-grained DOM updates.
 */
export declare function createLocalSignalProperties(instance: any, properties: PropertyDeclarations): void;
export declare function convertValue(value: unknown, type: PropertyOptions['type']): unknown;
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