PromiseRejectionPropagation.js

function test() {

    return new Promise(function(resolveA, rejectA) {
        // return rejectA('rejectA');
        return resolveA('resolveA');
    })
        .then(function(results) {

            return new Promise(function(resolveB, rejectB) {
                return rejectB('rejectB');
                // return resolveB('resolveB');

            });

        })
        .catch(error => {
            console.error('catchA: ' + error);
            throw error;
        });
};

test()
    .then(function(results) {
        return console.log(results);
    })
    .catch(error => {
        console.error('catchTop: ' + error);
    });

Using a .catch within a promise chain will terminate the propagation unless you throw an error in the catch.
So as the code is above, the output will be

catchA: rejectB
catchTop: rejectB

If you comment out line 18, you only get: catchA: rejectB