fix(build): modernize package configuration and remove smartfile dependency from filesystem operations

ts/smartssr.classes.smartssr.ts

@@ -29,7 +29,7 @@ export class SmartSSR {
     const browser = new plugins.smartpuppeteer.IncognitoBrowser();
     const renderTimeMeasurement = new plugins.smarttime.HrtMeasurement();
     let renderedPageString: string;
-    let screenshotBuffer: Buffer;
+    let screenshotBuffer: Buffer | undefined;
     await browser.start();
     try {
       const context = await browser.getNewIncognitoContext();
@@ -84,12 +84,11 @@ export class SmartSSR {
 
     // debug
     if (this.options.debug) {
-      plugins.smartfile.memory.toFsSync(
-        renderedPageString,
-        plugins.path.join(paths.noGitDir, 'test.html')
-      );
       const fs = await import('fs');
-      fs.writeFileSync(plugins.path.join(paths.noGitDir, 'test.png'), screenshotBuffer);
+      fs.writeFileSync(plugins.path.join(paths.noGitDir, 'test.html'), renderedPageString);
+      if (screenshotBuffer) {
+        fs.writeFileSync(plugins.path.join(paths.noGitDir, 'test.png'), screenshotBuffer);
+      }
     }
 
     return resultDeferred.promise;