src/index.ts

import { Application } from 'probot' // eslint-disable-line no-unused-vars

export = (app: Application) => {
    app.on('issues.opened', async context => {
        const issueComment = context.issue({
            body: 'Thanks for opening this issue!'
        });
        await context.github.issues.createComment(issueComment)
    });
    // For more information on building apps:
    // https://probot.github.io/docs/

    // To get your app running against GitHub, see:
    // https://probot.github.io/docs/development/
}