All challenges

JavaScript challenge · Frontend

Promise.all

Difficulty

medium

Time

~20m

Format

Single

Grading

Auto-graded

#frontend#javascript#typescript#async#promises
Mission file // read carefullymedium

Implement promiseAll(promises) mirroring Promise.all: resolve to an array of results in the same order as the input (regardless of settle order), or reject as soon as any input rejects. Resolve to [] for an empty input.

Build with

TypeScriptJavaScript
Hidden test suite
Auto-graded on submit
Start challenge

Sign in to save your progress.