different results by different v8 versions

(base) ➜  my_app cat x.js
setTimeout(()=>{
    console.log('timer1')

    Promise.resolve().then(function() {
        console.log('promise1')
    })
})

setTimeout(()=>{
    console.log('timer2')

    Promise.resolve().then(function() {
        console.log('promise2')
    })
})



(base) ➜  my_app nvm use v10.11.0
Now using node v10.11.0 (npm v6.4.1)
(base) ➜  my_app node -e 'console.log(process.versions)'
{ http_parser: '2.8.0',
  node: '10.11.0',
  v8: '6.8.275.32-node.28',
  uv: '1.23.0',
  zlib: '1.2.11',
  ares: '1.14.0',
  modules: '64',
  nghttp2: '1.33.0',
  napi: '3',
  openssl: '1.1.0i',
  icu: '62.1',
  unicode: '11.0',
  cldr: '33.1',
  tz: '2018e' }
(base) ➜  my_app node x.js
timer1
timer2
promise1
promise2



(base) ➜  my_app nvm use v11
Now using node v11.15.0 (npm v6.7.0)
(base) ➜  my_app node -e 'console.log(process.versions)'
{ node: '11.15.0',
  v8: '7.0.276.38-node.19',
  uv: '1.27.0',
  zlib: '1.2.11',
  brotli: '1.0.7',
  ares: '1.15.0',
  modules: '67',
  nghttp2: '1.37.0',
  napi: '4',
  llhttp: '1.1.1',
  http_parser: '2.8.0',
  openssl: '1.1.1b',
  cldr: '34.0',
  icu: '63.1',
  tz: '2018e',
  unicode: '11.0' }
(base) ➜  my_app node x.js
timer1
promise1
timer2
promise2



(base) ➜  my_app nvm use stable
Now using node v12.3.1 (npm v6.9.0)
(base) ➜  my_app node -e 'console.log(process.versions)'
{
  node: '12.3.1',
  v8: '7.4.288.27-node.18',
  uv: '1.29.1',
  zlib: '1.2.11',
  brotli: '1.0.7',
  ares: '1.15.0',
  modules: '72',
  nghttp2: '1.38.0',
  napi: '4',
  llhttp: '1.1.3',
  http_parser: '2.8.0',
  openssl: '1.1.1b',
  cldr: '35.1',
  icu: '64.2',
  tz: '2019a',
  unicode: '12.1'
}
(base) ➜  my_app node x.js
timer1
promise1
timer2
promise2




(base) ➜  my_app ./deno_0.1 --version
deno: 0.1.0
v8: 6.9.297-deno
(base) ➜  my_app ./deno_0.1 x.js
timer2
promise2
timer1
promise1
(base) ➜  my_app ./deno_0.3.11
(base) ➜  my_app ./deno_0.3.11 version
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/libcore/option.rs:345:21
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

(base) ➜  my_app ./deno_0.3.10 version
deno: 0.3.10
v8: 7.4.238
typescript: 3.4.1
(base) ➜  my_app ./deno_0.3.10 x.js
timer1
timer2
promise1
promise2

(base) ➜  my_app ./deno_0.4 version
deno: 0.4.0
v8: 7.6.53
typescript: 3.4.1
(base) ➜  my_app ./deno_0.4 run x.js
timer1
timer2
promise1
promise2

(base) ➜  my_app deno version
deno: 0.6.0
v8: 7.6.53
typescript: 3.4.1

(base) ➜  my_app deno run x.js
timer1
timer2
promise1
promise2

macOS High Sierra Version 10.13.6, but I thinks this doesn't matter.

the outs on my Chrome

Google Chrome	74.0.3729.169 (Official Build) (64-bit)
Revision	78e4f8db3ce38f6c26cf56eed7ae9b331fc67ada-refs/branch-heads/3729@{#1013}
OS	Mac OS X
JavaScript	V8 7.4.288.28

is:

setTimeout(()=>{
    console.log('timer1')

    Promise.resolve().then(function() {
        console.log('promise1')
    })
})

setTimeout(()=>{
    console.log('timer2')

    Promise.resolve().then(function() {
        console.log('promise2')
    })
})
177
timer1
promise1
timer2
promise2

This is a inconsistent behavior in Node.js 10. You can refer to nodejs/node#22842.