Initial commit with translated description

scripts/shared/storage/identities.js

@@ -0,0 +1,44 @@
+const { FileStorage } = require("./base");
+
+/**
+ * IdentitiesFileStorage implements IDataSource<Type> interface from js-sdk
+ */
+class IdentitiesFileStorage extends FileStorage {
+  async load() {
+    return await this.readFile();
+  }
+
+  async save(key, value, keyName = "id") {
+    const data = await this.readFile();
+    const index = data.findIndex((item) => item[keyName] === key);
+
+    if (index >= 0) {
+      // Update existing item
+      data[index] = value;
+    } else {
+      // Add new item
+      data.push(value);
+    }
+
+    await this.writeFile(data);
+  }
+
+  async get(key, keyName = "id") {
+    const data = await this.readFile();
+    return data.find((item) => item[keyName] === key);
+  }
+
+  async delete(key, keyName = "id") {
+    const data = await this.readFile();
+    const filtered = data.filter((item) => item[keyName] !== key);
+
+    if (filtered.length === data.length) {
+      // Item not found, throw error to match expected behavior
+      throw new Error(`Item with ${keyName}=${key} not found`);
+    }
+
+    await this.writeFile(filtered);
+  }
+}
+
+module.exports = { IdentitiesFileStorage };