.eslintrc.js in addon.md

Assuming your .eslintrc.js is like: https://docs.voltocms.com/upgrade-guide/#update-your-eslint-config

Add a file called .eslintrc.js in your src/addons/volto-something addon

const path = require('path');
const root = __dirname


function getPackageBasePath(base) {
  while (!fs.existsSync(`${base}/package.json`)) {
    base = path.join(base, '../');
  }
  return path.resolve(base);
}


module.exports = require(`${getPackageBasePath(path.join(__dirname, '..'))}/.eslintrc`)