import type { Plugin } from "vite";
/** A function that triggers the load of an island module. */
export type ClientDirectiveLoader = () => Promise<void>;
/** Options passed to a custom client directive function. */
export interface ClientDirectiveOptions {
    /** The matched attribute name, e.g. `'client:on-click'` */
    name: string;
    /** The attribute value; empty string if no value was set */
    value: string;
}
/**
 * A custom client directive function.
 *
 * Called by the runtime when a matching attribute is found on an island element.
 * The function is responsible for calling `load()` when the desired condition is met.
 *
 * @example
 * ```ts
 * // src/directives/hash.ts
 * import type { ClientDirective } from 'vite-plugin-shopify-theme-islands';
 *
 * const hashDirective: ClientDirective = (load, opts) => {
 *   const target = opts.value;
 *   if (location.hash === target) { load(); return; }
 *   window.addEventListener('hashchange', () => {
 *     if (location.hash === target) load();
 *   });
 * };
 *
 * export default hashDirective;
 * ```
 *
 * Register it in `vite.config.ts`:
 * ```ts
 * shopifyThemeIslands({
 *   directives: {
 *     custom: [{ name: 'client:hash', entrypoint: './src/directives/hash.ts' }],
 *   },
 * })
 * ```
 */
export type ClientDirective = (load: ClientDirectiveLoader, options: ClientDirectiveOptions, el: HTMLElement) => void | Promise<void>;
/** Plugin option entry for registering a custom client directive. */
export interface ClientDirectiveDefinition {
    /** HTML attribute name, e.g. `'client:on-click'` */
    name: string;
    /** Path to the directive module (supports Vite aliases) */
    entrypoint: string;
}
/** Shared directive configuration shape used by both the plugin and the runtime. */
export interface DirectivesConfig {
    /** Configuration for the `client:visible` directive (IntersectionObserver). */
    visible?: {
        /** HTML attribute name. Default: `'client:visible'` */
        attribute?: string;
        /** Passed to IntersectionObserver — loads islands before they scroll into view. Default: `'200px'` */
        rootMargin?: string;
        /** Passed to IntersectionObserver — ratio of element that must be visible. Default: `0` */
        threshold?: number;
    };
    /** Configuration for the `client:idle` directive (requestIdleCallback). */
    idle?: {
        /** HTML attribute name. Default: `'client:idle'` */
        attribute?: string;
        /** Deadline (ms) passed to requestIdleCallback; also used as the setTimeout fallback delay. Default: `500` */
        timeout?: number;
    };
    /** Configuration for the `client:media` directive (matchMedia). */
    media?: {
        /** HTML attribute name. Default: `'client:media'` */
        attribute?: string;
    };
    /** Configuration for the `client:defer` directive (fixed setTimeout delay). */
    defer?: {
        /** HTML attribute name. Default: `'client:defer'` */
        attribute?: string;
        /** Fallback delay (ms) when the attribute has no value. Default: `3000` */
        delay?: number;
    };
    /** Configuration for the `client:interaction` directive (mouseenter/touchstart/focusin). */
    interaction?: {
        /** HTML attribute name. Default: `'client:interaction'` */
        attribute?: string;
        /** DOM event names to listen for. Default: `['mouseenter', 'touchstart', 'focusin']` */
        events?: string[];
    };
    /** Custom client directives to register. Each entry maps an attribute name to a module entrypoint. */
    custom?: ClientDirectiveDefinition[];
}
/** Runtime-facing directive configuration — omits plugin-only `custom` directives. */
export type RuntimeDirectivesConfig = Omit<DirectivesConfig, "custom">;
/** Retry configuration for failed island loads. */
export interface RetryConfig {
    /** Number of times to retry after the initial failure. Default: `0` (no auto-retry) */
    retries?: number;
    /** Base delay in ms between retries; doubles each attempt. Default: `1000` */
    delay?: number;
}
/** Event detail for the `islands:load` DOM event. */
export interface IslandLoadDetail {
    /** The custom element tag name, e.g. `'product-form'` */
    tag: string;
    /** Milliseconds from directive resolution to successful module load (chunk fetch time). */
    duration: number;
    /** Which attempt succeeded. 1 = first try, 2 = first retry, etc. */
    attempt: number;
}
/** Event detail for the `islands:error` DOM event. */
export interface IslandErrorDetail {
    /** The custom element tag name, e.g. `'product-form'` */
    tag: string;
    /** The error thrown by the loader or custom directive */
    error: unknown;
    /** Which attempt failed. 1 = initial attempt, 2 = first retry, etc. */
    attempt: number;
}
declare global {
    interface DocumentEventMap {
        /** Fired after an island module resolves successfully. */
        "islands:load": CustomEvent<IslandLoadDetail>;
        /** Fired when an island load or custom directive fails. Fired on each retry attempt. */
        "islands:error": CustomEvent<IslandErrorDetail>;
    }
}
export interface ShopifyThemeIslandsOptions {
    /** Directories to scan for island files. Accepts paths or Vite aliases. Default: `['/frontend/js/islands/']` */
    directories?: string | string[];
    /** Log discovered islands and generated virtual module. Default: `false` */
    debug?: boolean;
    /** Per-directive configuration. */
    directives?: DirectivesConfig;
    /** Automatic retry behaviour for failed island loads. */
    retry?: RetryConfig;
}
export interface ReviveOptions {
    directives?: RuntimeDirectivesConfig;
    /** Log island activation and directive events to the console. Default: `false` */
    debug?: boolean;
    /** Automatic retry behaviour for failed island loads. */
    retry?: RetryConfig;
}
export default function shopifyThemeIslands(options?: ShopifyThemeIslandsOptions): Plugin;