react-apollo-perf-monitoring-link.ts

import { ApolloLink, NextLink, Operation } from 'apollo-link';
import { JasonBourne } from '../../../service/Marketing/JasonBourne';

const PERF_MONITORED_OPERATIONS = [
    'loadChatsList',
    // ...
];

export const perfMonitorLink = new ApolloLink((operation: Operation, forward?: NextLink) => {
    const startTime = new Date().getTime();
    return forward ?
        forward(operation).map(result => {
            const operationName = operation.operationName;
            const ellapsedMs = new Date().getTime() - startTime;

            if (PERF_MONITORED_OPERATIONS.includes(operationName)) {
                JasonBourne.track({
                    name: 'Performance.QueryLoadTime',
                    operationName,
                    ellapsedMs
                });
            }

            return result;
        }) :
        null;
});