gatsby-config.js

module.exports = {
  siteMetadata: {
    title: `Xceno.io`,
    siteUrl: "https://www.xceno.io",
    description: "Adventures in software and how to survive them.",
    language: "en"
  },
  plugins: [
    `gatsby-plugin-react-helmet`,
    {
      resolve: `gatsby-transformer-remark`,
      options: {
        plugins: [
          {
            resolve: `gatsby-remark-prismjs`,
            options: {
              classPrefix: "language-"
            }
          }
        ]
      }
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `src`,
        path: `${__dirname}/src/`
      }
    },
    `gatsby-plugin-sass`,
    `gatsby-plugin-typescript`,
    `gatsby-plugin-netlify`,
    `gatsby-plugin-remove-trailing-slashes`,
    {
      resolve: `gatsby-plugin-sitemap`,
      options: {
        output: `/sitemap.xml`,
        query: `
          {
            site {
              siteMetadata {
                siteUrl
              }
            }

            allSitePage(filter: {path: {glob: "/**?[!scripts]**" }}) {
              edges {
                node {
                  path
                }
              }
            }
        }`
      }
    },
    {
      resolve: `gatsby-plugin-feed`,
      options: {
        query: `
          {
            site {
              siteMetadata {
                title
                description
                siteUrl
                site_url: siteUrl
                language
              }
            }
          }
        `,
        feeds: [
          {
            serialize: ({ query: { site, allMarkdownRemark } }) => {
              return allMarkdownRemark.edges.map(edge => {
                return Object.assign({}, edge.node.frontmatter, {
                  description: edge.node.excerpt,
                  date: edge.node.frontmatter.date,
                  url: site.siteMetadata.siteUrl + edge.node.fields.slug,
                  guid: site.siteMetadata.siteUrl + edge.node.fields.slug,
                  categories: edge.node.frontmatter.tags,
                  custom_elements: [
                    {
                      "content:encoded": edge.node.html
                    }
                  ]
                });
              });
            },
            query: `
              {
                allMarkdownRemark(
                  sort: { order: DESC, fields: [frontmatter___date] },
                ) {
                  edges {
                    node {
                      excerpt
                      html
                      fields { slug }
                      frontmatter {
                        title
                        date
                        tags
                      }
                    }
                  }
                }
              }
            `,
            output: "/rss.xml",
            feed_url: "https://www.xceno.io/rss.xml",
            // optional configuration to insert feed reference in pages:
            // if `string` is used, it will be used to create RegExp and then test if pathname of
            // current page satisfied this regular expression;
            // if not provided or `undefined`, all pages will have feed reference inserted
            match: "^/posts/"
          }
        ]
      }
    }
  ]
};