v9 switches to ESM

_data/metadata.js

@@ -1,4 +1,4 @@
-module.exports = {
+export default {
 	title: "Eleventy Base Blog v8",
 	url: "https://example.com/",
 	language: "en",

content/blog/blog.11tydata.js

@@ -1,4 +1,4 @@
-module.exports = {
+export default {
 	tags: [
 		"posts"
 	],

content/feed/feed.11tydata.js

@@ -1,3 +1,3 @@
-module.exports = {
+export default {
 	eleventyExcludeFromCollections: true
 }

eleventy.config.drafts.js

@@ -24,10 +24,9 @@ function eleventyComputedExcludeFromCollections() {
 	}
 };
 
-module.exports.eleventyComputedPermalink = eleventyComputedPermalink;
+export { eleventyComputedPermalink, eleventyComputedExcludeFromCollections };
-module.exports.eleventyComputedExcludeFromCollections = eleventyComputedExcludeFromCollections;
 
-module.exports = eleventyConfig => {
+export default function(eleventyConfig) {
 	eleventyConfig.addGlobalData("eleventyComputed.permalink", eleventyComputedPermalink);
 	eleventyConfig.addGlobalData("eleventyComputed.eleventyExcludeFromCollections", eleventyComputedExcludeFromCollections);
 

eleventy.config.images.js

@@ -1,7 +1,7 @@
-const path = require("path");
+import path from "path";
-const eleventyImage = require("@11ty/eleventy-img");
+import eleventyImage from "@11ty/eleventy-img";
 
-module.exports = eleventyConfig => {
+export default function(eleventyConfig) {
 	function relativeToInputPath(inputPath, relativeFilePath) {
 		let split = inputPath.split("/");
 		split.pop();

eleventy.config.js

@@ -1,16 +1,18 @@
-const { DateTime } = require("luxon");
+import { DateTime } from "luxon";
-const markdownItAnchor = require("markdown-it-anchor");
+import markdownItAnchor from "markdown-it-anchor";
 
-const pluginRss = require("@11ty/eleventy-plugin-rss");
+import pluginRss from "@11ty/eleventy-plugin-rss";
-const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
+import pluginSyntaxHighlight from "@11ty/eleventy-plugin-syntaxhighlight";
-const pluginBundle = require("@11ty/eleventy-plugin-bundle");
+import pluginBundle from "@11ty/eleventy-plugin-bundle";
-const pluginNavigation = require("@11ty/eleventy-navigation");
+import pluginNavigation from "@11ty/eleventy-navigation";
-const { EleventyHtmlBasePlugin } = require("@11ty/eleventy");
 
-const pluginDrafts = require("./eleventy.config.drafts.js");
+import pluginDrafts from "./eleventy.config.drafts.js";
-const pluginImages = require("./eleventy.config.images.js");
+import pluginImages from "./eleventy.config.images.js";
+
+/** @param {import("@11ty/eleventy").UserConfig} eleventyConfig */
+export default async function(eleventyConfig) {
+	const { EleventyHtmlBasePlugin } = await import("@11ty/eleventy");
 
-module.exports = function(eleventyConfig) {
 	// Copy the contents of the `public` folder to the output folder
 	// For example, `./public/css/` ends up in `_site/css/`
 	eleventyConfig.addPassthroughCopy({

package.json

@@ -1,7 +1,8 @@
 {
 	"name": "eleventy-base-blog",
-	"version": "8.0.0",
+	"version": "9.0.0",
 	"description": "A starter repository for a blog web site using the Eleventy site generator.",
+	"type": "module",
 	"scripts": {
 		"build": "npx @11ty/eleventy",
 		"build-ghpages": "npx @11ty/eleventy --pathprefix=/eleventy-base-blog/",