Solution

src/app.js

@@ -1 +1,63 @@
-// write code here
+/* eslint-disable no-console */
+
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+
+function moveFile() {
+  const args = process.argv.slice(2);
+  const [source, destination] = args;
+
+  if (!source || !destination) {
+    console.error('Both source and destination are required');
+
+    return;
+  }
+
+  if (!fs.existsSync(source)) {
+    console.error('Source file does not exist');
+
+    return;
+  }
+
+  const sourceStat = fs.statSync(source);
+
+  if (!sourceStat.isFile()) {
+    console.error('Source is not a file');
+
+    return;
+  }
+
+  let targetDestination = destination;
+
+  if (fs.existsSync(destination)) {
+    const destinationStat = fs.statSync(destination);
+
+    if (destinationStat.isDirectory()) {
+      targetDestination = path.join(destination, path.basename(source));
+    }
+  } else {
+    if (destination.endsWith(path.sep)) {
+      console.error('Destination directory does not exist');
+
+      return;
+    }
+
+    const parentDir = path.dirname(destination);
+
+    if (!fs.existsSync(parentDir)) {
+      console.error('Parent directory does not exist');
+
+      return;
+    }
+  }
+
+  try {
+    fs.renameSync(source, targetDestination);
+  } catch (e) {
+    console.error(e.message);
+  }
+}
+
+moveFile();