Interview Frontend - Bloomberg

Interview Experience
1

1: Use promise to implement promise.all(), promise.allSettle(), promise.race().
2. Implement a class named Flow{} that fulfills the following:

const flow = new Flow();

flow
    .step((next) => {
        setTimeout(() => {
            next("foo");
        }, 1000);
    })
    .step((next, value) => {
        setTimeout(() => {
            next(`${value}-bar`);
        }, 500);
    })
    .execute((value) => {
        console.log(value); // Expected Output: "foo-bar"
    });

The basic idea is to use a promise chain, where step creates a new promise stored in an array, and execute calls this promise chain.

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