filesystem-plugin.js

module.exports = {
  siteMetadata: {
    title: 'Gatsby Default Starter',
    description:
      'Kick off your next, great Gatsby project with this default starter. This barebones starter ships with the main Gatsby configuration files you might need.',
    author: '@gatsbyjs',
  },
  plugins: [
    {
      resolve: 'gatsby-source-filesystem',
      options: {
        name: 'posts',
        path: `${__dirname}/posts`,
      },
    },
  ],
};