feat(in-app-help): use preprocessed subtree data

docs/Release Notes/Release Notes/v0.92.8-beta.md

@@ -13,6 +13,9 @@
 *   Markdown export:
     *   Reduce extra whitespace between list items.
     *   Preserve include note.
+*   In-app help:
+    *   Document structure is now precalculated, so start-up time should be slightly increased.
+    *   Optimized the content in order to reduce the size on disk.
 
 ## 🌍 Internationalization
 

electron-docs-main.ts

@@ -12,6 +12,7 @@ import cls from "./src/services/cls.js";
 import type { AdvancedExportOptions } from "./src/services/export/zip.js";
 import TaskContext from "./src/services/task_context.js";
 import { deferred } from "./src/services/utils.js";
+import { parseNoteMetaFile } from "./src/services/in_app_help.js";
 
 const NOTE_ID_USER_GUIDE = "pOsGYCXsbNQG";
 const NOTE_ID_RELEASE_NOTES = "hD3V4hiu2VW4";
@@ -172,8 +173,13 @@ async function cleanUpMeta(outputPath: string, minify: boolean) {
         el.isExpanded = false;
     }
 
-    const json = minify ? JSON.stringify(meta) : JSON.stringify(meta, null, 4);
+    if (minify) {
-    await fs.writeFile(metaPath, json);
+        const subtree = parseNoteMetaFile(meta);
+        await fs.writeFile(metaPath, JSON.stringify(subtree));
+    } else {
+        await fs.writeFile(metaPath, JSON.stringify(meta, null, 4));
+    }
+
 }
 
 async function registerHandlers() {

src/services/in_app_help.ts

@@ -15,15 +15,14 @@ export function getHelpHiddenSubtreeData() {
     const metaFilePath = path.join(helpDir, "!!!meta.json");
 
     try {
-        const metaFileContent = JSON.parse(fs.readFileSync(metaFilePath).toString("utf-8"));
+        return JSON.parse(fs.readFileSync(metaFilePath).toString("utf-8"));
-        return parseNoteMetaFile(metaFileContent as NoteMetaFile);
     } catch (e) {
         console.warn(e);
         return [];
     }
 }
 
-function parseNoteMetaFile(noteMetaFile: NoteMetaFile): HiddenSubtreeItem[] {
+export function parseNoteMetaFile(noteMetaFile: NoteMetaFile): HiddenSubtreeItem[] {
     if (!noteMetaFile.files) {
         console.log("No meta files");
         return [];