gatsby-config.js

const {languages, defaultLanguage} = require('./languages');
const siteUrl = process.env.URL || `https://fallback.net`;

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`,
    siteUrl: 'https://kind-lichterman-5edcb4.netlify.app'
  },
  plugins: [
    `gatsby-plugin-image`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: `${__dirname}/src/images`
      }
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/locales`,
        name: `locale`
      }
    },
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: `gatsby-starter-default`,
        short_name: `starter`,
        start_url: `/`,
        background_color: `#663399`,
        theme_color: `#663399`,
        display: `minimal-ui`,
        icon: `src/images/gatsby-icon.png` // This path is relative to the root of the site.
      }
    },
    {
      resolve: `gatsby-plugin-react-i18next`,
      options: {
        languages,
        defaultLanguage,
        siteUrl: 'https://kind-lichterman-5edcb4.netlify.app',
        i18nextOptions: {
          defaultNS: 'common',
          //debug: true,
          lowerCaseLng: true,
          saveMissing: false,
          interpolation: {
            escapeValue: false // not needed for react as it escapes by default
          },
          keySeparator: false,
          nsSeparator: false
        },
        pages: [
          {
            matchPath: '/ignored-page',
            languages: ['en']
          }
        ]
      }
    },
    {
      resolve: 'gatsby-plugin-sitemap',
      options: {
        excludes: ['/**/404', '/**/404.html'],
        query: `
        {
          site {
            siteMetadata {
              siteUrl
            }
          }
          allSitePage(filter: {context: {i18n: {routed: {eq: false}}}}) {
            nodes {
              context {
                i18n {
                  defaultLanguage
                  languages
                  originalPath
                }
              }
              path
            }
          }
        }
        `,
        serialize: (node) => {
          const {languages, originalPath, defaultLanguage} = node.context.i18n;
          const url = siteUrl + originalPath;
          const links = [
            {lang: defaultLanguage, url},
            {lang: 'x-default', url}
          ];
          languages.forEach((lang) => {
            if (lang === defaultLanguage) return;
            links.push({lang, url: `${siteUrl}/${lang}${originalPath}`});
          });
          return {
            url,
            changefreq: 'daily',
            priority: originalPath === '/' ? 1.0 : 0.7,
            links
          };
        }
      }
    }
    // this (optional) plugin enables Progressive Web App + Offline functionality
    // To learn more, visit: https://gatsby.dev/offline
    // `gatsby-plugin-offline`,
  ]
};