Mocha - is there a hook that executes after all test files have been run?

I was looking at: Mocha run after all tests in all classes run and wondering if this was the only solution? It would be great to not have to nest all my tests.

I found this: https://levelup.gitconnected.com/typescript-and-mocha-hooks-c5d9ccffd58f and was able to get it working:

export const mochaHooks = (): Mocha.RootHookObject => {
    return {
        afterAll(this: Mocha.Context) {
            console.log('In afterAll');

            const suite = runnable.parent;
            if (suite?.suites) {
                for (const innerSuite of suite?.suites) {
                    console.log(innerSuite.title);
            
                    for (const test of innerSuite.tests) {
                        console.log(test.title);
                        console.log(test.isPassed());
                    }
                }
            }
        },

    };
};

but it's being triggered after every file instead of after all files. Does anyone know if there is a trick to make this work? Can I somehow aggregate the data in memory over many calls to this hook?