Launch Checklist

Before launch, every check in checks must run. Each number is one check: runCheck(ms, index) (already written) waits that many milliseconds and then passes, or fails with an error when the number is negative.

Write async function runChecklist(checks) that starts all checks at the same time, waits until every one has finished, and returns:

passed: how many checks passed
failed: the error messages of the failed checks, in the order of checks

One failing check must not stop the others from being counted.

Examples

runChecklist([5, 10, 1])

→ { passed: 3, failed: [] }

runChecklist([5, -1, 3, -2])

→ { passed: 2, failed: ["check 1 failed", "check 3 failed"] }

solution.js

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Tests

0 of 4 passing

•
all pass
runChecklist([5, 10, 1])
expected { passed: 3, failed: [] }
•
two fail
runChecklist([5, -1, 3, -2])
expected { passed: 2, failed: ["check 1 failed", "check 3 failed"] }
•
empty list
runChecklist([])
expected { passed: 0, failed: [] }
•
all fail
runChecklist([-4, -1])
expected { passed: 0, failed: ["check 0 failed", "check 1 failed"] }

On the line

+70 XP

Pass all 4 tests to claim it.