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Junior — Senior

Organization of sequential calls of asynchronous functions

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Task condition

You need to call the functions so that the numbers 1 2 3 are displayed sequentially in the console.


const getRandomArbitrary = (min, max) =>
    Math.floor(Math.random() * (max - min) + min);

const first = () => {
    return new Promise((resolve) => {
        setTimeout(() => console.log("1"), getRandomArbitrary(0, 3) * 1000);
    });
};

const second = () => {
    return new Promise((resolve) => {
        setTimeout(() => console.log("2"), getRandomArbitrary(0, 3) * 1000);
    });
};

const third = () => {
    new Promise((resolve) => {
        setTimeout(() => console.log("3"), getRandomArbitrary(0, 3) * 1000);
    });
};

Consider which approaches (callback chains, async/await, Promise composition) will guarantee the output order regardless of random delays.