async function foo(x) {
    console.log("foo", x)
}

async function bar(x) {
    throw new Error("bar" + x)
}

class DeferredPromiseExecutor {
    constructor() {
        this.calls = []
    }
    
    add(func, ...args) {
        this.calls.push([func, args])
    }
    
    run() {
        return Promise.all(this.calls.map(x => x[0](...x[1])))
    }
}

async function foobar() {
    const dp = new DeferredPromiseExecutor()
    dp.add(foo, 10)
    dp.add(bar, 40)
    try {
        await dp.run()
    } catch (e) {
        console.log("caught exception: " + e)
    }
}

foobar()