performance improvements... cache the 'project' ts-morph object, adjust chokidar settings to not reload for every file upon initialization, reload only once

Author: michaelgoeke

src/pageObjectModel.ts

@@ -19,6 +19,7 @@ export module pageObjectModel {
     } = <any>{};
     let currentPageFilePath!: string;
     let currentPageFilePathWatcher!: chokidar.FSWatcher;
+    let _project: Project;
 
     const lock = new AsyncLock();
     export async function init(testFileDir: string, config: PlaywrightLiveRecorderConfig_pageObjectModel, evalScope: (s: string) => any, page: Page) {
@@ -39,10 +40,10 @@ export module pageObjectModel {
 
         await currentPageFilePathWatcher?.close();
         const cwd = nodePath.join(process.cwd(), _state.config.path);
-        currentPageFilePathWatcher = chokidar.watch(currentPageFilePath, { cwd })
+        currentPageFilePathWatcher = chokidar.watch(currentPageFilePath, { cwd, ignoreInitial: true })
             .on(   'add', /*path*/() => reload(_state.page))
             .on('change', /*path*/() => reload(_state.page));
-
+        await reload(_state.page);
         return currentPageFilePath;
     }
 
@@ -59,14 +60,17 @@ export module pageObjectModel {
         console.time('pageObjectModel.reload');
         await lock.acquire('reload', async (release) => {
             try {
-                const filePathsToWatch = await _reload(page, [_state.config.globalPageFilePath, currentPageFilePath]);
+                
+                _project = _project ?? new Project({ tsConfigFilePath: await fs.access(nodePath.join(process.cwd(), 'tsconfig.json')).then(() => true).catch(() => false) ? 'tsconfig.json' : undefined });
+                const filePathsToWatch = await _reload(page, [_state.config.globalPageFilePath, currentPageFilePath], _project);
 
                 await currentPageFilePathWatcher?.close();
                 const cwd = nodePath.join(process.cwd(), _state.config.path);
-                currentPageFilePathWatcher = chokidar.watch(filePathsToWatch, { cwd })
+                currentPageFilePathWatcher = chokidar.watch(filePathsToWatch, { cwd, ignoreInitial: true })
                     .on(   'add', /*path*/() => reload(_state.page))
                     .on('change', /*path*/() => reload(_state.page));
 
+                await reload(_state.page);
                 await page.evaluate('if (reload_page_object_model_elements) reload_page_object_model_elements()');
             } catch (e) {
                 console.error(`error calling page.addScriptTag for page object model ${currentPageFilePath}`);