Function: createMetricsMiddleware()

createMetricsMiddleware(options: { metricsCallback?: (metric: { name: string; type: "counter" | "timing"; value: number; }) => void; trackCounts?: boolean; trackTiming?: boolean; }): EventMiddleware

Defined in: electron/events/middleware.ts:569

Metrics middleware that tracks event counts and timing.

Parameters

options

Configuration options for metrics collection

metricsCallback?

(metric: { name: string; type: "counter" | "timing"; value: number; }) => void

trackCounts?

boolean

trackTiming?

boolean

Returns

EventMiddleware

EventMiddleware function that collects event metrics

Remarks

Options include:

• trackCounts: Whether to track event occurrence counts (default: true)
• trackTiming: Whether to track event processing duration (default: true)
• metricsCallback: Optional callback to receive metric data for external systems

Example

import { logger } from "../utils/logger";

const metricsMiddleware = createMetricsMiddleware({
    trackCounts: true,
    trackTiming: true,
    metricsCallback: (metric) => {
        logger.debug("Metric update", metric);
    },
});
eventBus.use(metricsMiddleware);