import type { ElementModel } from './base.js';
export declare function setCreateState(creating: boolean, skipFieldInit: boolean): void;
export declare function yfield(fallback?: unknown): PropertyDecorator;
export declare function local(): PropertyDecorator;
export declare function getDeriveProperties(prototype: unknown, prop: string | symbol, propValue: unknown, receiver: unknown): Record<string, unknown> | null;
export declare function updateDerivedProp(derivedProps: Record<string, unknown> | null, receiver: ElementModel): void;
/**
 * The derive decorator is used to derive other properties' update when the
 * decorated property is updated.
 * The decorator function will be called before the decorated property is updated.
 * The decorator function will not execute in model creation.
 * @param fn
 * @returns
 */
export declare function derive<T extends ElementModel>(fn: (propValue: any, instance: T) => Record<string, unknown>): PropertyDecorator;
/**
 * The convert decorator is used to convert the property value before it's
 * set to the Y map.
 * This decorator function will not execute in model creation.
 * @param fn
 * @returns
 */
export declare function convert<T extends ElementModel>(fn: (propValue: any, instance: T) => unknown): (target: unknown, prop: string | symbol) => void;
export declare function getConvertMeta(target: unknown, prop: string | symbol): null | ((propValue: unknown, instance: unknown) => unknown);
export declare function convertProps(target: unknown, propKey: string | symbol, newProp: unknown, receiver: unknown): unknown;
export declare function observe<T extends ElementModel>(fn: (event: any, instance: T, type: 'modified' | 'altered') => void): (prototype: unknown, prop: string | symbol) => void;
export declare function initFieldObservers(prototype: unknown, receiver: ElementModel): void;
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