Questions
1 of 4
1Create a polyfill for Promise.all().
2Write a polyfill for Promise.race().
3Write a polyfill to implement Array.map()
4Write a polyfill for Array.flat(depth).
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Polyfills
01 / 04

Create a polyfill for Promise.all().

Promise.all() settles when all promises are fullfilled and rejects as soon as first promise rejects.

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