GitHub-issue-export.js

const fs = require('fs');
const https = require('https')

const options = {
    hostname: 'api.github.com',
    method: 'https',
    port: 443,
    method: 'GET',
    path: '/repos/<owner>/<repo>/issues?state=all&per_page=100',
    headers: {
        'User-Agent': 'Node',
        'Authorization': 'token <personnal access token>'
    }
}

let data = ''
const req = https.get(options, res => {
    res.on('data', chunk => data += chunk)
    res.on('end', () => parseIssues(JSON.parse(data)));
})

req.on('error', error => console.error(error))

function parseIssues(data) {
    let out = data.map(issue => {
        return {
            title: issue.title,
            number: issue.number,
            labels: issue.labels.map(l => l.name).join(', '),
            state: issue.state,
            milestone: issue.milestone ? issue.milestone.title : '',
            body: issue.body
        }
    })

    fs.writeFileSync('./issues.json', JSON.stringify(out))
    console.log('Completed');
}