gatsby-config.js

const info = require("./bookInfo");

module.exports = {
  siteMetadata: {
    title: info.title,
    author: info.author,
    description: info.subject,
    siteUrl: info.siteUrl,
    social: info.social,
  },
  plugins: [
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/book.md`,
        name: `book`,
      },
    },
    `gatsby-plugin-sass`,
    {
      resolve: `gatsby-transformer-remark`,
      options: {
        plugins: [
          `gatsby-remark-prismjs`,
          {
            resolve: `gatsby-remark-images`,
            options: {
              maxWidth: 590,
            },
          },
          {
            resolve: `gatsby-remark-responsive-iframe`,
            options: {
              wrapperStyle: `margin-bottom: 1.0725rem`,
            },
          },
          `gatsby-remark-prismjs`,
          `gatsby-remark-copy-linked-files`,
          `gatsby-remark-smartypants`,
        ],
      },
    },
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-plugin-google-analytics`,
      options: {
        //trackingId: `ADD YOUR TRACKING ID HERE`,
      },
    },
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: info.title,
        start_url: `/`,
        background_color: info.PWA.backgroundColor,
        theme_color: info.PWA.themeColor,
        display: `minimal-ui`,
      },
    },
    `gatsby-plugin-offline`,
    `gatsby-plugin-react-helmet`,
  ],
};