Promise.all(), Promise.race(), and Promise.any()

Promise.race([
  new Promise(resolve => setTimeout(resolve, 100, 'first')),
  'second',
  Promise.resolve('third')
]).then(console.log);

first
second
Promise.race() with mixed values demonstrates: 1) Non-promise values are wrapped in Promise.resolve(), 2) 'second' becomes immediately resolved promise, 3) Wins race against delayed and async promises, 4) Promise.resolve('third') queues in microtask, 5) setTimeout callback queues in macrotask, 6) Understanding this helps predict race outcomes.
third
Undefined