@perceptr/web-sdk/dist/esm/PerformanceMonitor.js

Perceptr Web SDK for recording and monitoring user sessions

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { logger } from "./utils/logger";
export class PerformanceMonitor {
    constructor(memoryLimit = PerformanceMonitor.DEFAULT_MEMORY_LIMIT, onLimitExceeded) {
        if (!this.isMemoryAPIAvailable()) {
            logger.warn("Memory API is not available");
        }
        this.memoryLimit = memoryLimit;
        this.onLimitExceeded = onLimitExceeded;
    }
    getMemoryLimit() {
        return this.memoryLimit;
    }
    setMemoryLimit(memoryLimit) {
        this.memoryLimit = memoryLimit;
    }
    start() {
        if (!this.isMemoryAPIAvailable())
            return;
        this.checkInterval = window.setInterval(() => {
            this.checkMemoryUsage();
        }, PerformanceMonitor.CHECK_INTERVAL);
    }
    stop() {
        if (this.checkInterval) {
            clearInterval(this.checkInterval);
        }
    }
    checkMemoryUsage() {
        return __awaiter(this, void 0, void 0, function* () {
            try {
                const memory = yield this.getMemoryInfo();
                if (memory && typeof memory === "object" && "usedJSHeapSize" in memory) {
                    if (memory.usedJSHeapSize > memory.jsHeapSizeLimit) {
                        this.onLimitExceeded();
                    }
                }
                else if (memory && typeof memory === "object" && "bytes" in memory) {
                    if (memory.bytes > this.memoryLimit) {
                        this.onLimitExceeded();
                    }
                }
            }
            catch (error) {
                logger.warn("Memory measurement failed:", error);
            }
        });
    }
    getMemoryInfo() {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.isMemoryAPIAvailable())
                return null;
            if (typeof window.performance.measureUserAgentSpecificMemory === "function") {
                return window.performance.measureUserAgentSpecificMemory();
            }
            return window.performance.memory;
        });
    }
    isMemoryAPIAvailable() {
        if (typeof window.performance.measureUserAgentSpecificMemory === "function" ||
            window.performance.memory) {
            return true;
        }
        return false;
    }
}
PerformanceMonitor.MB = 1024 * 1024;
PerformanceMonitor.DEFAULT_MEMORY_LIMIT = 50 * PerformanceMonitor.MB;
PerformanceMonitor.CHECK_INTERVAL = 5000;