import type { Registry } from 'prom-client';
export interface IMetricsPluginOptions {
    /**
     * Make the module global.
     * @default false
     */
    isGlobal?: boolean;
    /**
     * Enable metrics collection.
     * @default true
     */
    enabled?: boolean;
    /**
     * Metrics prefix.
     * @default 'redisx_'
     */
    prefix?: string;
    /**
     * Default labels added to all metrics.
     *
     * With an external registry (`registry: 'default'` or a provided
     * instance), labels are only applied when this option is explicitly set —
     * the plugin never overwrites the application's default labels otherwise.
     */
    defaultLabels?: Record<string, string>;
    /**
     * Which prom-client registry to register metrics into.
     *
     * - `'own'` — an isolated registry, exposed via the plugin's `/metrics`
     *   endpoint and `getMetrics()`.
     * - `'default'` — the global `promClient.register`, so RedisX metrics show
     *   up on the application's existing `/metrics` endpoint.
     * - a `Registry` instance — register into the provided registry.
     *
     * With an external registry (`'default'` or an instance) the plugin only
     * removes its OWN metrics on shutdown and `collectDefaultMetrics` becomes
     * opt-in (the application almost certainly collects process metrics
     * already).
     * @default 'own'
     */
    registry?: 'own' | 'default' | Registry;
    /**
     * Histogram buckets for latency (in seconds).
     * @default [0.001, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10]
     */
    histogramBuckets?: number[];
    /**
     * Expose /metrics endpoint.
     * @default true
     */
    exposeEndpoint?: boolean;
    /**
     * Metrics endpoint path.
     * Note: NestJS `@Controller()` path is a compile-time constant.
     * This option is reserved for future use. The endpoint is always `/metrics`.
     * @default '/metrics'
     */
    endpoint?: string;
    /**
     * Collect default Node.js metrics.
     * @default true
     */
    collectDefaultMetrics?: boolean;
    /**
     * Enable detailed command metrics.
     * @default true
     */
    commandMetrics?: boolean;
    /**
     * Enable plugin-specific metrics (cache, locks, etc).
     * @default true
     */
    pluginMetrics?: boolean;
    /**
     * Collection interval for gauges (ms).
     * @default 15000
     */
    collectInterval?: number;
}
export interface IMetricsJson {
    name: string;
    help: string;
    type: string;
    values: Array<{
        labels: Record<string, string>;
        value: number;
    }>;
}
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