Switch to commonmark-test-suite (#18444)

scripts/clean-markdown-legacy-spec.js

@@ -1,19 +1,25 @@
 import fs from "node:fs/promises";
-import { commonmark } from "commonmark.json";
+import commonmarkTestSuite from "commonmark-test-suite";
 
-const existing = new Set(commonmark.map(({ markdown }) => markdown.trim()));
-const DIRECTORY = new URL(
-  "../tests/format/markdown/legacy-spec/",
-  import.meta.url,
+const existing = new Set(
+  Object.values(commonmarkTestSuite).flatMap((release) =>
+    release.testCases.map(({ markdown }) => markdown.trim()),
+  ),
 );
 
-for (const file of await fs.readdir(DIRECTORY, { withFileTypes: true })) {
-  if (!file.isFile()) {
-    continue;
-  }
-  const fileUrl = new URL(file.name, DIRECTORY);
-  const content = await fs.readFile(fileUrl, "utf8");
-  if (existing.has(content.trim())) {
-    await fs.rm(new URL(file.name, DIRECTORY));
+const DIRECTORIES = [
+  new URL("../tests/format/markdown/spec-legacy/", import.meta.url),
+];
+
+for (const directory of DIRECTORIES) {
+  for (const file of await fs.readdir(directory, { withFileTypes: true })) {
+    if (!file.isFile()) {
+      continue;
+    }
+    const fileUrl = new URL(file.name, directory);
+    const content = await fs.readFile(fileUrl, "utf8");
+    if (existing.has(content.trim())) {
+      await fs.rm(new URL(file.name, directory));
+    }
   }
 }