var arr = []

setTimeout(() => arr.push(6), 0)
arr.push(1)
const p = new Promise(resolve => {
  arr.push(2)
  resolve()
})
arr.push(3)
p.then(() => arr.push(5))
arr.push(4)
setTimeout(() => arr.push(7), 0)

setTimeout(() => {
  // Expected output: [1, 2, 3, 4, 5, 6, 7]
  // In the iOS 15 mini program environment, this will output: [1,2,3,4,6,5,7]
  console.log(arr)
}, 1000)