A script that will delete your private gists on github gist

delete_private_gists.js

const GitHub = require('github-api');
 
// basic auth
const gh = new GitHub({
   username: __YOUR_USERNAME__,
   password: __YOUR_PASSWORD__
})

// get the required user (you)
const user = gh.getUser(__YOUR_USERNAME__)

// get your gists, filter the neccessary and delete
user.listGists((err) => {
  if (err) throw new Error("An error occured")
})
.then(res => {
  // Get secret gist ids only
  const data = res.data
  .filter((x) => x.public === false)
  .map((y) => y.id)
  
  // Get the gist objects
  gists = data.map((x) => gh.getGist(x))
  gists.forEach((x) => {
    // call the delete method on the gist objects
    x.delete()
      .then(() => console.log("Successfully deleted gist"))
      .catch(err => console.error(err))
  })
})
.catch(err => console.error(err))

Interesting...