Move catalog indexes to Markdown front matter

scripts/fillMetadata.ts

@@ -15,7 +15,8 @@ import {
 } from "node:fs/promises";
 import path from "node:path";
 import process from "node:process";
-import { parseDocument, stringify } from "yaml";
+import { stringify } from "yaml";
+import { readCatalogIndex } from "./catalogIndex.js";
 
 type CatalogFile = {
   path?: unknown;
@@ -91,7 +92,7 @@ async function findIndexes(directory: string, result: string[]): Promise<void> {
   const entries = await readdir(directory, { withFileTypes: true });
   for (const entry of entries) {
     const entryPath = path.join(directory, entry.name);
-    if (entry.isFile() && entry.name === "index.yaml") {
+    if (entry.isFile() && entry.name === "index.md") {
       result.push(entryPath);
     } else if (entry.isDirectory() && !ignoredDirectories.has(entry.name)) {
       await findIndexes(entryPath, result);
@@ -182,12 +183,7 @@ async function writeAtomically(filePath: string, contents: string): Promise<void
 }
 
 async function readProgram(indexPath: string): Promise<ProgramIndex> {
-  const source = await readFile(indexPath, "utf8");
-  const document = parseDocument(source, { prettyErrors: true });
-  if (document.errors.length > 0) {
-    throw new Error(document.errors.map((error) => error.message).join("; "));
-  }
-  return document.toJS() as ProgramIndex;
+  return (await readCatalogIndex<ProgramIndex>(indexPath)).metadata;
 }
 
 async function generateManifest(catalogDirectory: string): Promise<{
@@ -275,7 +271,7 @@ async function main(): Promise<void> {
   const displayPath = path.relative(process.cwd(), manifestPath) || manifestPath;
   if (currentContents === contents) {
     console.log(
-      `Done. ${displayPath} is up to date. Files: ${Object.keys(manifest.files).length}; index.yaml files: ${indexes}`,
+      `Done. ${displayPath} is up to date. Files: ${Object.keys(manifest.files).length}; index.md files: ${indexes}`,
     );
     return;
   }
@@ -288,7 +284,7 @@ async function main(): Promise<void> {
 
   await writeAtomically(manifestPath, contents);
   console.log(
-    `Updated ${displayPath}. Files: ${Object.keys(manifest.files).length}; index.yaml files: ${indexes}`,
+    `Updated ${displayPath}. Files: ${Object.keys(manifest.files).length}; index.md files: ${indexes}`,
   );
 }