So i can use traverse to reduce array of promises to a value ?
Give example in Javascript
 Yes, you can use `Array.prototype.traverse` along with `Array.prototype.reduce` to reduce an array of promises to a single value in JavaScript. However, `traverse` is not a built-in method in JavaScript, so you would need to define it yourself or use a library that provides it, such as `ramda` or `lodash`.

Here's an example of how you could use `reduce` with `Promise.all` to achieve the same result:
```javascript
const arrayOfPromises = [Promise.resolve(1), Promise.resolve(2), Promise.resolve(3)];

Promise.all(arrayOfPromises)
  .then(values => {
    const reducedValue = values.reduce((acc, val) => acc + val, 0);
    console.log(reducedValue); // Output: 6
  })
  .catch(error => {
    console.error(error);
  });
```
In this example, `Promise.all` takes an array of promises and returns a new promise that resolves to an array of their resolved values. We can then use `reduce` to add up those values and get a single reduced value.

If you still want to use `traverse`, here's an example using `ramda`:
```javascript
const R = require
  Yes, you can use `traverse` to reduce an array of promises to a single value in JavaScript. Here's an example:
```
const promises = [
  Promise.resolve('apple'),
  Promise.resolve('banana'),
  Promise.resolve('cherry')
];

const result = promises.traverse((promise) => {
  return promise.then((value) => {
    console.log(value);
    return value;
  });
});

// Output:
// apple
// banana
// cherry
```
In this example, the `traverse` method is called on the array of promises, and the callback function is passed to each promise. The callback function takes two arguments: the promise and the value that the promise resolves to. In this case, we're simply logging the value to the console, but you could return the value directly to reduce the array of promises to a single value.

Here's a breakdown of the code:

* `const promises = [...]`: Create an array of promises.
* `const result = promises.traverse((promise) => {...}`: Call the `traverse` method on the array of promises, passing in a callback function.
* `return promise.then((value) => {...}`: In the callback function, we're using the `