debug.js

const fs = require("fs")
const matter = require("gray-matter")
fs.readFileSync("test.md", "utf-8")
/* test.md body
---
author_association: OWNER
created_at: '2022-05-08T09:01:18Z'
html_url: https://github.com/himanoa/times-himanoa/issues/2#issuecomment-1120378582
id: 1120378582
issue_url: https://api.github.com/repos/himanoa/times-himanoa/issues/2
node_id: IC_kwDOHTMZ985Cx57W
performed_via_github_app: 
reactions:
  "+1": 0
  "-1": 0
  confused: 0
  eyes: 0
  heart: 0
  hooray: 0
  laugh: 0
  rocket: 0
  total_count: 0
  url: https://api.github.com/repos/himanoa/times-himanoa/issues/comments/1120378582/reactions
updated_at: '2022-05-08T09:01:25Z'
url: https://api.github.com/repos/himanoa/times-himanoa/issues/comments/1120378582
user:
  avatar_url: https://avatars.githubusercontent.com/u/18651963?v=4
  events_url: https://api.github.com/users/himanoa/events{/privacy}
  followers_url: https://api.github.com/users/himanoa/followers
  following_url: https://api.github.com/users/himanoa/following{/other_user}
  gists_url: https://api.github.com/users/himanoa/gists{/gist_id}
  gravatar_id: ''
  html_url: https://github.com/himanoa
  id: 18651963
  login: himanoa
  node_id: MDQ6VXNlcjE4NjUxOTYz
  organizations_url: https://api.github.com/users/himanoa/orgs
  received_events_url: https://api.github.com/users/himanoa/received_events
  repos_url: https://api.github.com/users/himanoa/repos
  site_admin: false
  starred_url: https://api.github.com/users/himanoa/starred{/owner}{/repo}
  subscriptions_url: https://api.github.com/users/himanoa/subscriptions
  type: User
  url: https://api.github.com/users/himanoa

---
![image](https://user-images.githubusercontent.com/18651963/167289195-6e8b213f-c01a-4a1d-be19-9c87642a6e2b.png)
縦幅が狭くてなんか絶妙に書きにくい気がする。
Vimから書けるようにしてみようかな？

*/
console.dir(matter(fs.readFileSync("test.md", "utf-8")).content)
/* Output
'![image](https://user-images.githubusercontent.com/18651963/167289195-6e8b213f-c01a-4a1d-be19-9c87642a6e2b.png)\n' +
  '縦幅が狭くてなんか絶妙に書きにくい気がする。\n' +
  'Vimから書けるようにしてみようかな？\n'
*/