test2.js

require('./magic');

function a() {
    console.log(global.env.test)
}

Promise.resolve()
    .then(async function () {
        global.env.test = 'baz';
        console.log('in async 1', global.env.test);
        await new Promise(res => process.nextTick(res));
        // console.log('in async 2', global.env.test);
        await new Promise(res => process.nextTick(res));
        // console.log('in async 3', global.env.test);
        await new Promise(res => process.nextTick(res));
        a();
    });

Promise.resolve()
    .then(() => {
        process.nextTick(() => {
            global.env.test = 'foo';
            console.log('in nextTick 1', global.env.test);

            process.nextTick(() => {
                global.env.test = 'bar';
                // Reflect.getPrototypeOf(global.env.test).test2 = 'baz';
                console.log('in nextTick 1-1', global.env.test);
            });
            process.nextTick(() => {
                console.log('in nextTick 1-2', global.env.test);
            });
        });

        process.nextTick(() => {
            console.log('in nextTick 2', global.env.test);

            process.nextTick(() => {
                console.log('in nextTick 2-2', global.env.test);
            })
        });
    });