gatsby-node.js
const { postsPerPage } = graphqlResult.data.wp.readingSettings
const postsChunkedIntoArchivePages = chunk(posts, postsPerPage)
const totalPages = postsChunkedIntoArchivePages.length
return Promise.all(
postsChunkedIntoArchivePages.map(async (\_posts, index) => {
const pageNumber = index + 1
const getPagePath = page => {
if (page > 0 && page <= totalPages) {
// Since our homepage is our blog page
// we want the first page to be "/" and any additional pages
// to be numbered.
// "/blog/2" for example
return page === 1 ? `/blog/` : `/blog/${page}`
}
return null
}

/hello-world/
/404.html
/404/