vike/dist/utils/catchInfiniteLoop.js

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export { catchInfiniteLoop };
import { assertUsage, assertWarning } from './assert.js';
import { humanizeTime } from './humanizeTime.js';
const trackers = {};
const maxCalls = 99;
const time = 5 * 1000;
function catchInfiniteLoop(functionName) {
    // Init
    const now = new Date().getTime();
    // Clean all outdated trackers
    Object.keys(trackers).forEach((key) => {
        const tracker = trackers[key];
        const elapsedTime = now - tracker.startTime;
        if (elapsedTime > time)
            delete trackers[key];
    });
    const tracker = (trackers[functionName] ?? (trackers[functionName] = { count: 0, startTime: now }));
    // Count
    tracker.count++;
    // Error
    const msg = `${functionName} called ${tracker.count} times within ${humanizeTime(time)} — infinite loop?`;
    if (tracker.count > maxCalls) {
        assertUsage(false, msg);
    }
    // Warning, at 50% threshold
    if (!tracker.warned && tracker.count > maxCalls * 0.5) {
        // Warning is shown upon 10 calls a second, on average during 5 seconds, given the default parameters
        assertWarning(false, msg, { onlyOnce: false, showStackTrace: true });
        tracker.warned = true;
    }
}