init commit,

002_source/ionic_mobile/src/ionic_fs.ts

@@ -0,0 +1,41 @@
+import { Directory, Encoding, Filesystem } from '@capacitor/filesystem';
+
+const writeSecretFile = async () => {
+  await Filesystem.writeFile({
+    path: 'secrets/text.txt',
+    data: 'This is a test',
+    directory: Directory.Documents,
+    encoding: Encoding.UTF8,
+  });
+};
+
+const readSecretFile = async (): Promise<string> => {
+  const contents = await Filesystem.readFile({
+    path: 'secrets/text.txt',
+    directory: Directory.Documents,
+    encoding: Encoding.UTF8,
+  });
+
+  console.log('secrets:', contents);
+  return JSON.stringify(contents.data);
+};
+
+const deleteSecretFile = async () => {
+  await Filesystem.deleteFile({
+    path: 'secrets/text.txt',
+    directory: Directory.Documents,
+  });
+};
+
+const readFilePath = async () => {
+  // Here's an example of reading a file with a full file path. Use this to
+  // read binary data (base64 encoded) from plugins that return File URIs, such as
+  // the Camera.
+  const contents = await Filesystem.readFile({
+    path: 'file:///var/mobile/Containers/Data/Application/22A433FD-D82D-4989-8BE6-9FC49DEA20BB/Documents/text.txt',
+  });
+
+  console.log('data:', contents);
+};
+
+export { deleteSecretFile, readFilePath, readSecretFile, writeSecretFile };