Zest.

JavaScript: Promise.all

A short, tested JavaScript example for promise.all. Copy it and adjust the names and paths for your project.

JavaScript
const [users, posts] = await Promise.all([
  fetch("/api/users").then(r => r.json()),
  fetch("/api/posts").then(r => r.json()),
]);

// Promise.allSettled never rejects:
const results = await Promise.allSettled([a(), b()]);

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