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gatsby-node.ts
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gatsby-node.ts
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import type { GatsbyNode } from "gatsby"
import { createFilePath } from "gatsby-source-filesystem"
import path from "path"
export const onCreateWebpackConfig: GatsbyNode["onCreateWebpackConfig"] = ({
actions,
}) => {
actions.setWebpackConfig({
resolve: {
modules: [path.resolve(__dirname, "src"), "node_modules"],
alias: { "@": path.resolve(__dirname, "src") },
},
})
}
export const createSchemaCustomization: GatsbyNode["createSchemaCustomization"] =
async ({ actions: { createTypes } }) => {
createTypes(`
type MarkdownRemark implements Node {
slug: File @link(from: "fields.slug")
}
`)
}
export const onCreateNode: GatsbyNode["onCreateNode"] = async ({
node,
getNode,
actions: { createNodeField },
}) => {
if (node.internal.type === `MarkdownRemark`) {
const slug = createFilePath({ node, getNode, trailingSlash: false })
createNodeField({
node,
name: `slug`,
value: `/articles${slug.toLowerCase()}`,
})
}
}
export const createPages: GatsbyNode["createPages"] = async ({
graphql,
actions,
reporter,
}) => {
const { createPage } = actions
const getArticlesByGroup = async (groupField: string) => {
const { data, errors } = await graphql<Queries.Query>(`
query {
allMarkdownRemark(
filter: { frontmatter: { draft: { ne: true } } }
sort: { frontmatter: { date: DESC } }
) {
totalCount
group(field: { frontmatter: { ${groupField}: SELECT } }) {
fieldValue
totalCount
nodes {
fields {
slug
}
frontmatter {
date(formatString: "MMMM DD, YYYY")
title
description
slug
draft
author
}
id
excerpt(truncate: true, pruneLength: 150)
}
}
}
}
`)
return { data, errors }
}
const { data: categoryNodes, errors: categoryErrors } =
await getArticlesByGroup("categories")
const { data: tagNodes, errors: tagErrors } = await getArticlesByGroup("tags")
const { data: seriesNodes, errors: seriesErrors } =
await getArticlesByGroup("series")
const { data: articleList, errors: articleErrors } =
await graphql<Queries.Query>(`
query {
allMarkdownRemark(
filter: { frontmatter: { draft: { ne: true } } }
sort: { frontmatter: { date: DESC } }
) {
totalCount
edges {
node {
...MarkdownRemarkFragment
}
next {
...MarkdownRemarkFragment
}
previous {
...MarkdownRemarkFragment
}
}
}
}
fragment MarkdownRemarkFragment on MarkdownRemark {
id
tableOfContents
timeToRead
excerpt(pruneLength: 150, truncate: true)
fields {
slug
}
frontmatter {
title
author
date(formatString: "MMMM DD, YYYY")
original
description
draft
slug
categories
series
tags
}
headings {
id
value
depth
}
wordCount {
words
sentences
paragraphs
}
html
}
`)
if (categoryErrors || tagErrors || seriesErrors || articleErrors) {
reporter.panicOnBuild(`Error while running GraphQL query.`)
return
}
createPage({
path: `/articles`,
component: path.resolve(`src/templates/articles.tsx`),
context: {
articles: {
list: articleList?.allMarkdownRemark,
groupBy: {
categories: categoryNodes?.allMarkdownRemark.group,
tags: tagNodes?.allMarkdownRemark.group,
series: seriesNodes?.allMarkdownRemark.group,
},
},
},
})
articleList?.allMarkdownRemark.edges.forEach(({ node, next, previous }) => {
createPage({
path: `${node.fields?.slug}`,
component: path.resolve(`src/templates/article.tsx`),
context: {
node,
next,
previous,
},
})
})
}