gatsby-config.js

const urljoin = require("url-join");
const config = require("./data/SiteConfig");

module.exports = {
  pathPrefix: config.pathPrefix === "" ? "/" : config.pathPrefix,
  siteMetadata: {
    siteUrl: urljoin(config.siteUrl, config.pathPrefix),
  },
  plugins: [
    "gatsby-plugin-react-helmet",
    "gatsby-plugin-lodash",
    {
      resolve: "gatsby-source-filesystem",
      options: {
        name: "assets",
        path: `${__dirname}/static/`
      }
    },
    {
      resolve: "gatsby-source-filesystem",
      options: {
        name: "posts",
        path: `${__dirname}/content/`
      }
    },
    {
      resolve: "gatsby-transformer-remark",
      options: {
        plugins: [
          {
            resolve: "gatsby-remark-images",
            options: {
              maxWidth: 690
            }
          },
          {
            resolve: "gatsby-remark-responsive-iframe"
          },
          {
            resolve: 'gatsby-remark-video',
            options: {
              width: "100%",
              height: 'auto',
              preload: 'auto',
              muted: true,
              autoplay: true,
              playsinline: true,
              controls: false,
              loop: true
            }
          },
          "gatsby-remark-copy-linked-files",
          "gatsby-remark-autolink-headers",
          "gatsby-remark-prismjs"
        ]
      }
    },
    {
      resolve: "gatsby-plugin-google-analytics",
      options: {
        trackingId: config.googleAnalyticsID
      }
    },
    {
      resolve: "gatsby-plugin-nprogress",
      options: {
        color: config.themeColor
      }
    },
    "gatsby-plugin-sharp",
    "gatsby-transformer-sharp",
    "gatsby-plugin-catch-links",
    "gatsby-plugin-twitter",
    "gatsby-plugin-sitemap",
    "gatsby-plugin-styled-components",
    {
      resolve: "gatsby-plugin-manifest",
      options: {
        name: config.siteTitle,
        short_name: config.siteTitleShort,
        description: config.siteDescription,
        start_url: config.pathPrefix,
        background_color: config.backgroundColor,
        theme_color: config.themeColor,
        display: "minimal-ui",
        icon: "static/logos/icon.png"
      }
    },
    "gatsby-plugin-offline"
  ]
};