Make Lit copy-spec cross-platform

renderers/lit/package.json

@@ -30,7 +30,7 @@
   },
   "wireit": {
     "copy-spec": {
-      "command": "mkdir -p src/0.8/schemas && cp ../../specification/0.8/json/*.json src/0.8/schemas",
+      "command": "node scripts/copy-spec.mjs",
       "files": [
         "../../specification/0.8/json/*.json"
       ],

renderers/lit/scripts/copy-spec.mjs

@@ -0,0 +1,19 @@
+import { mkdir, readdir, copyFile } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const rootDir = path.resolve(__dirname, "..");
+const sourceDir = path.resolve(rootDir, "..", "..", "specification", "0.8", "json");
+const destDir = path.resolve(rootDir, "src", "0.8", "schemas");
+
+await mkdir(destDir, { recursive: true });
+
+const entries = await readdir(sourceDir, { withFileTypes: true });
+const jsonFiles = entries.filter((entry) => entry.isFile() && entry.name.endsWith(".json"));
+
+for (const file of jsonFiles) {
+  const sourcePath = path.join(sourceDir, file.name);
+  const destPath = path.join(destDir, file.name);
+  await copyFile(sourcePath, destPath);
+}