gatsby-config.js

if (process.env.ENVIROMENT !== 'production') {
  require('dotenv').config();
}

const config = require('./src/config');

module.exports = {
  pathPrefix: process.env.PATH_PREFIX,
  siteMetadata: {
    title: config.title,
    description: config.description,
    featuredImage: config.featuredImage,
    siteUrl: config.siteUrl,
    siteUrlNoSlash: config.siteUrlNoSlash,
  },
  plugins: [
    'gatsby-plugin-catch-links',
    'gatsby-plugin-react-helmet',
    {
      resolve: `gatsby-plugin-canonical-urls`,
      options: {
        siteUrl: config.siteUrl,
      },
    },
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `learn`,
        path: `${__dirname}/src/documentation/`,
        include: [`**/*.md`], // ignore files starting with a dot
      },
    },
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: config.title,
        short_name: config.title,
        start_url: '/',
        background_color: config.color,
        theme_color: config.color,
        display: config.display,
        icon: config.icon,
      },
    },
    'gatsby-plugin-offline',
    `gatsby-plugin-typescript`,
    {
      resolve: 'gatsby-transformer-remark',
      options: {
        plugins: [
          {
            resolve: `gatsby-remark-autolink-headers`,
            options: {
              offsetY: `125`,
              icon: `<svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg>`,
              className: `autolink-headers`,
              maintainCase: false,
              removeAccents: true,
            },
          },
          {
            resolve: `gatsby-remark-prismjs`,
            options: {
              classPrefix: 'language-',
              inlineCodeMarker: null,
              aliases: { js: 'javascript' },
              showLineNumbers: false,
              noInlineHighlight: false,
            },
          },
          {
            resolve: `gatsby-remark-images`,
            options: {
              maxWidth: 590,
            },
          },
        ],
      },
    },
    {
      resolve: `gatsby-plugin-sitemap`,
      options: {
        query: `{
          site {
            siteMetadata {
              siteUrl,
              siteUrlNoSlash
            }
          }
          allSitePage {
            edges {
              node {
                path
              }
            }
          }
          allMarkdownRemark {
            edges {
              node {
                fields {
                  slug
                }
              }
            }
          }
        }`,
        serialize: ({ site, allSitePage, allMarkdownRemark }) => {
          let pages = [];
          allSitePage.edges.map(edge => {
            pages.push({
              url: site.siteMetadata.siteUrlNoSlash + edge.node.path,
              changefreq: `daily`,
              priority: 0.7,
            });
          });
          allMarkdownRemark.edges.map(edge => {
            pages.push({
              url: `${site.siteMetadata.siteUrlNoSlash}/${edge.node.fields.slug}`,
              changefreq: `daily`,
              priority: 0.7,
            });
          });

          return pages;
        },
      },
    },
    {
      resolve: `gatsby-plugin-emotion`,
    },
  ],
};