solution

.eslintrc.js

@@ -4,7 +4,8 @@ module.exports = {
     jest: true
   },
   rules: {
-    'no-proto': 0
+    'no-proto': 0,
+    "no-console": "off"
   },
   plugins: ['jest']
 };

.github/workflows/test.yml-template

@@ -0,0 +1,23 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test

package.json

@@ -18,7 +18,7 @@
   "devDependencies": {
     "@faker-js/faker": "^8.4.1",
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^1.9.10",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-node": "^11.1.0",

src/app.js

@@ -1 +1,40 @@
 'use strict';
+
+/* eslint-disable no-console */
+const fs = require('fs');
+const path = require('path');
+
+const paths = process.argv.slice(2);
+const [filePathOrig, filePathDest] = paths;
+
+if (paths.length !== 2) {
+  console.error('Not valid argument(s) is provided');
+} else {
+  copyFile(filePathOrig, filePathDest);
+}
+
+function copyFile(source, dest) {
+  const pathOrig = path.resolve(source);
+  const pathDest = path.resolve(dest);
+
+  if (pathOrig === pathDest) {
+    console.error('File in this directory already exist');
+
+    return;
+  }
+
+  if (!fs.existsSync(pathOrig)) {
+    console.error('This file does not exist', pathOrig);
+
+    return;
+  }
+
+  fs.copyFile(pathOrig, pathDest, (err) => {
+    if (err) {
+      console.error(`err`);
+
+      return;
+    }
+    console.log('File copied successfully.');
+  });
+}

src/files/orig1.txt

@@ -0,0 +1 @@
+Original text;

src/files/subDir/copy.txt

@@ -0,0 +1 @@
+Original text;

src/files/subDir/copy2.txt

@@ -0,0 +1 @@
+Original text;

src/files/subDir/copy3.txt

@@ -0,0 +1 @@
+Original text;

src/files/subDir/copy4.txt

@@ -0,0 +1 @@
+Original text;