Cleanup docusaurus config (#2027)

And ensure linter is actually running on it

## Checklist

- [-] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [-] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [-] I have not broken the cheatsheet

Author: pokey

package.json

@@ -12,7 +12,7 @@
     "fix:syncpack": "pnpm syncpack fix-mismatches",
     "init-vscode-sandbox": "pnpm --filter=@cursorless/cursorless-vscode init-launch-sandbox",
     "lint:meta": "pnpm run meta-updater:base --test",
-    "lint:ts": "eslint packages --ext ts,tsx",
+    "lint:ts": "eslint packages --ext ts,tsx,mts",
     "lint": "pnpm run lint:meta && syncpack list-mismatches && pnpm run lint:ts",
     "meta-updater:base": "pnpm --filter=@cursorless/meta-updater build && meta-updater",
     "preinstall": "npx only-allow pnpm",

packages/cursorless-org-docs/docusaurus.config.mts

@@ -1,9 +1,13 @@
 import type { Config } from "@docusaurus/types";
 import type { Root } from "mdast";
-import { relative, resolve } from "path";
+import { dirname, relative, resolve } from "path";
 import { themes } from "prism-react-renderer";
-import * as unified from "unified";
+import type { Transformer } from "unified";
 import { visit } from "unist-util-visit";
+import { createRequire } from "node:module";
+import { fileURLToPath } from "node:url";
+
+const require = createRequire(import.meta.url);
 
 /**
  * Files within /docs reference repository directories
@@ -17,24 +21,27 @@ import { visit } from "unist-util-visit";
  * - Try resolving it relative to repo root.
  * - If anywhere but /docs - link to GitHub.
  */
-function remarkPluginFixLinksToRepositoryArtifacts() {
-  const transformer: unified.Transformer<Root> = async (ast, file) => {
+function remarkPluginFixLinksToRepositoryArtifacts(): Transformer<Root> {
+  return (ast, file) => {
     visit(ast, "link", (node) => {
-      const link = node.url;
-      if (link.startsWith("http://") || link.startsWith("https://")) {
+      const { url } = node;
+      if (url.startsWith("http://") || url.startsWith("https://")) {
         return;
       }
 
       // Docusaurus runs this plugin on its intermediate
       // markdown representaiton as well as on our original files.
       // These are relative links that docusaurus already figured out
       // based on realative links to .md files
-      if (link.startsWith("/docs/")) {
+      if (url.startsWith("/docs/")) {
         return;
       }
 
-      const repoRoot = resolve(__dirname, "../..");
-      const artifact = resolve(file.dirname!, link);
+      const repoRoot = resolve(
+        dirname(fileURLToPath(import.meta.url)),
+        "../..",
+      );
+      const artifact = resolve(file.dirname!, url);
       const artifactRelative = relative(repoRoot, artifact);
 
       // We host all files under docs, will resolve as a relative link
@@ -49,7 +56,6 @@ function remarkPluginFixLinksToRepositoryArtifacts() {
       node.url = linkToRepositoryArtifact;
     });
   };
-  return transformer;
 }
 
 const config: Config = {