market/gatsby-node.js

exports.onCreateWebpackConfig = ({ actions }) => {
  actions.setWebpackConfig({
    node: {
      // 'fs' fix for squid.js
      fs: 'empty'
    }
  })
}

exports.onCreatePage = async ({ page, actions }) => {
  const { createPage } = actions
  // page.matchPath is a special key that's used for matching pages
  // only on the client.
  const handleClientSideOnly = page.path.match(/^\/asset/)

  if (handleClientSideOnly) {
    page.matchPath = '/asset/*'

    // Update the page.
    createPage(page)
  }
}