.env.example

INSTALLATION_TOKEN= # Your installation access token

checks.js

require('dotenv').config()

const octokit = require('@octokit/rest')()
const logResponse = resp => console.log('%j', resp)

octokit.authenticate({
  type: 'integration',
  token: process.env.INSTALLATION_TOKEN
})

octokit.checks.create({
  owner: 'swinton',
  repo: 'example',
  name: 'feedback',
  head_branch: 'helloworld',
  head_sha: '2e3d00a6f14a667d50ad9ccd6f3dcfded52121e2',
  status: 'in_progress',
  started_at: (new Date()).toISOString(),  // The time that the check run began in ISO 8601 format: `YYYY-MM-DDTHH:MM:SSZ`
  completed_at: (new Date()).toISOString(),
  conclusion: 'status',
  headers: {
    'Accept': 'application/vnd.github.antiope-preview+json,application/vnd.github.machine-man-preview+json'
  }
}).then(logResponse, logResponse)