chore(node-fs): enhance demo test

Author: alimd

packages/node-fs/demo/node-fs.mjs

@@ -1,8 +1,14 @@
-import {writeJsonFile, WriteFileMode} from '@alwatr/node-fs';
+import {readJson, writeJson} from '@alwatr/node-fs';
 
-for (let i = 10; i > 0; i--) {
-  console.log('request write file %s without waiting...', i);
-  writeJsonFile('./file.json', {i, a: 'b'}, WriteFileMode.Rename);
+for (let i = 0; i < 100; i++) {
+  console.log('writeJson %s without waiting...', i);
+  writeJson('file.json', {i, a: 'b'});
+  if (i===70) {
+    console.log('readJson %s', i);
+    console.dir(await readJson('file.json'));
+  }
 }
 
+console.dir(await readJson('file.json'));
+
 console.log('loop done, wait for queue process')