Publish Forma Engine 0.3.0 source with documentation and CI

editor/persistence.ts

@@ -0,0 +1,39 @@
+import { type Project, validateProject } from "../engine/schema.ts";
+function db(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    const req = indexedDB.open("forma-projects", 1);
+    req.onupgradeneeded = () => req.result.createObjectStore("projects");
+    req.onsuccess = () => resolve(req.result);
+    req.onerror = () => reject(req.error);
+  });
+}
+export async function loadDraft() {
+  const d = await db();
+  return new Promise<Project | null>((resolve, reject) => {
+    const r = d.transaction("projects").objectStore("projects").get("active");
+    r.onsuccess = () => {
+      d.close();
+      if (r.result) {
+        try {
+          validateProject(r.result);
+          resolve(r.result);
+        } catch {
+          resolve(null);
+        }
+      } else resolve(null);
+    };
+    r.onerror = () => reject(r.error);
+  });
+}
+export async function saveDraft(p: Project) {
+  const d = await db();
+  return new Promise<void>((resolve, reject) => {
+    const tx = d.transaction("projects", "readwrite");
+    tx.objectStore("projects").put(p, "active");
+    tx.oncomplete = () => {
+      d.close();
+      resolve();
+    };
+    tx.onerror = () => reject(tx.error);
+  });
+}