/**
 * Dependency Injection System
 */
/**
 * Service container
 */
declare class Container {
    private services;
    private parent;
    constructor(parent?: Container);
    set(key: string, value: any): void;
    get<T = any>(key: string): T;
    has(key: string): boolean;
    createChild(): Container;
}
/**
 * Get or create injector for element
 */
export declare function getInjector(el: HTMLElement): Container;
/**
 * Provide a service globally
 *
 * @example
 * // Provide API service
 * Gyos.provide('api', {
 *   fetchUser: () => fetch('/api/user').then(r => r.json())
 * });
 */
export declare function provide(key: string, value: any): void;
/**
 * Inject a service from global DI container
 *
 * NOTE: This only works with globally provided services via Gyos.provide().
 * To use element-scoped services (g-provide), use this.$inject() inside scopes.
 *
 * @example
 * // Global provide + inject
 * Gyos.provide('api', apiService);
 * const api = Gyos.inject('api'); // Works
 *
 * @example
 * // Element-scoped provide + inject
 * // <div g-provide='{"theme": "dark"}' g-scope="Demo">
 * Gyos.scope('Demo', {
 *   onMount() {
 *     const theme = this.$inject('theme'); // Use this.$inject, not Gyos.inject
 *   }
 * });
 */
export declare function inject<T = any>(key: string, defaultValue?: T): T;
/**
 * Get global container (for internal use)
 */
export declare function getGlobalContainer(): Container;
export {};
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