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by lhnz
1104 days ago
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Not going to comment about Go here, but the JavaScript code above is confusing for a lot of people. Promises begin to resolve immediately on creation whether or not we've attempted to unwrap their value using `await`. Therefore, it's quite possible that the first call to `promise()` might resolve after 3 seconds, while the next two calls could take 7 seconds and 10 seconds respectively. In this case, the `Promise.all` would produce a result after 10 seconds, and then the next line `const a = await aPromise` would unwrap the value within `aPromise` immediately, since it would already have been fulfilled. |
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