gatsby-config.js

const siteConfig = require('./site-config');

module.exports = {
  siteMetadata: {
    ...siteConfig,
  },
  plugins: [
    'gatsby-plugin-react-helmet',
    'gatsby-plugin-offline',
    'gatsby-transformer-json',
    'gatsby-plugin-eslint',
    {
      resolve: 'gatsby-plugin-sitemap',
      output: '/sitemap.xml',
      createLinkInHead: true,
      query: `{
        site{
          siteMetadata{
            siteUrl
          }
        }
        allSitePage{
          edges{
            node{
              path
            }
          }
        }
      }`,
      serialize: ({ site, allSitePage }) => {
        allSitePage.edges.map(edge => {
          return {
            url: site.siteMetadata.siteUrl + edge.node.path,
            changefreq: 'daily',
            priority: 0.7,
          };
        });
      },
    },
    {
      resolve: 'gatsby-source-filesystem',
      options: {
        name: 'content',
        path: `${__dirname}/content`,
      },
    },
    {
      resolve: 'gatsby-transformer-remark',
      options: {
        plugins: ['gatsby-remark-prismjs'],
      },
    },
    'gatsby-remark-copy-linked-files',
    'gatsby-plugin-sharp',
    'gatsby-transformer-sharp',
    'gatsby-plugin-webpack-size',
    {
      resolve: 'gatsby-plugin-react-svg',
      options: {
        rule: {
          include: /images/,
        },
      },
    },
    {
      resolve: 'gatsby-remark-images',
      options: {
        maxWidth: 1080,
      },
    },
    {
      resolve: 'gatsby-plugin-google-analytics',
      options: {
        trackingId: 'UA-145918559-1',
        // Defines where to place the tracking script - `true` in the head and `false` in the body
        head: true,
        // Setting this parameter is optional
        anonymize: true,
        // Setting this parameter is also optional
        respectDNT: false,
        // Delays sending pageview hits on route update (in milliseconds)
        pageTransitionDelay: 100,
      },
    },
  ],
};