copilot first commit

skills.js

@@ -0,0 +1,17 @@
+function calculateNumbers(a, b) {
+    if (typeof a !== 'number' || typeof b !== 'number') {
+      throw new Error('Both arguments must be numbers');
+    }
+
+    if (isNaN(a) || isNaN(b)) {
+      throw new Error('Arguments must not be NaN');
+    }
+
+    if (!isFinite(a) || !isFinite(b)) {
+      throw new Error('Arguments must be finite numbers');
+    }
+
+    return a + b;
+  }
+
+  module.exports = { calculateNumbers };

skills.test.js

@@ -0,0 +1,20 @@
+// Import the function from the module where it's defined
+const { calculateNumbers } = require('./skills');
+
+describe('calculateNumbers', () => {
+  test('adds positive numbers correctly', () => {
+    expect(calculateNumbers(1, 2)).toBe(3);
+  });
+
+  test('adds negative numbers correctly', () => {
+    expect(calculateNumbers(-1, -2)).toBe(-3);
+  });
+
+  test('adds zero correctly', () => {
+    expect(calculateNumbers(0, 2)).toBe(2);
+  });
+
+  test('adds floating point numbers correctly', () => {
+    expect(calculateNumbers(1.2, 3.4)).toBeCloseTo(4.6);
+  });
+});