gatsby-config.js

module.exports = {
  siteMetadata: {
    title: "React Native v2",
    subtitle: "Building mobile applications",
    description:
      "All you need to know when starting a new React Native project",
    keywords: ["React Native", "iOS", "Android", "hooks"]
  },
  pathPrefix: "/react-native-v2",
  plugins: [
    `gatsby-plugin-layout`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/lessons`,
        name: "markdown-pages"
      }
    },
    `gatsby-plugin-react-helmet`,
    {
      resolve: `gatsby-transformer-remark`,
      options: {
        plugins: [
          `gatsby-remark-autolink-headers`,
          `gatsby-remark-copy-linked-files`,
          `gatsby-remark-prismjs`,
          {
            resolve: `gatsby-remark-images`,
            options: {
              maxWidth: 800,
              linkImagesToOriginal: true,
              sizeByPixelDensity: false
            }
          }
        ]
      }
    },
    {
      resolve: `gatsby-plugin-sharp`,
      options: {
        useMozJpeg: false,
        stripMetadata: true,
        defaultQuality: 75
      }
    }
  ]
};