From 69439ef859e3cb1ad172f9eb3ab18c02e8775682 Mon Sep 17 00:00:00 2001
From: "pranav.date" <pranavdate@epps-erp.in>
Date: Sun, 12 Oct 2025 13:51:31 +0530
Subject: [PATCH 1/2] lcm.js file added

---
 Maths/LCM.js           | 36 ++++++++++++++++++++++++++++++++++++
 Maths/test/LCM.test.js | 28 ++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 Maths/LCM.js
 create mode 100644 Maths/test/LCM.test.js

diff --git a/Maths/LCM.js b/Maths/LCM.js
new file mode 100644
index 0000000000..d976371735
--- /dev/null
+++ b/Maths/LCM.js
@@ -0,0 +1,36 @@
+/**
+ * @function lcm
+ * @description Compute the least common multiple (LCM) of two integers.
+ * @param {number} a - first integer
+ * @param {number} b - second integer
+ * @return {number} LCM of a and b
+ * @example lcm(4,6) -> 12
+ * @example lcm(7,3) -> 21
+ */
+const gcd = (x, y) => {
+  let a = Math.abs(x)
+  let b = Math.abs(y)
+  if (Number.isNaN(a) || Number.isNaN(b)) throw new TypeError('Argument is NaN - Not a Number')
+  while (b !== 0) {
+    const t = a % b
+    a = b
+    b = t
+  }
+  return a
+}
+
+const lcm = (a, b) => {
+  const na = Number(a)
+  const nb = Number(b)
+
+  if (Number.isNaN(na) || Number.isNaN(nb) || typeof a === 'object' || typeof b === 'object') {
+    throw new TypeError('Argument is NaN - Not a Number')
+  }
+
+  if (na === 0 || nb === 0) return 0
+
+  // lcm(a,b) = |a * b| / gcd(a,b)
+  return Math.abs((na / gcd(na, nb)) * nb)
+}
+
+export { lcm }
diff --git a/Maths/test/LCM.test.js b/Maths/test/LCM.test.js
new file mode 100644
index 0000000000..d673464a71
--- /dev/null
+++ b/Maths/test/LCM.test.js
@@ -0,0 +1,28 @@
+import { describe, it, expect } from 'vitest'
+import { lcm } from '../LCM'
+
+describe('lcm()', () => {
+  it('returns 0 when either argument is 0', () => {
+    expect(lcm(0, 5)).toBe(0)
+    expect(lcm(7, 0)).toBe(0)
+  })
+
+  it('computes LCM for positive integers', () => {
+    expect(lcm(4, 6)).toBe(12)
+    expect(lcm(7, 3)).toBe(21)
+    expect(lcm(21, 6)).toBe(42)
+  })
+
+  it('computes LCM when inputs are negative', () => {
+    expect(lcm(-4, 6)).toBe(12)
+    expect(lcm(4, -6)).toBe(12)
+    expect(lcm(-4, -6)).toBe(12)
+  })
+
+  it('throws for non-numeric inputs', () => {
+    // @ts-ignore
+    expect(() => lcm('a', 5)).toThrow()
+    // @ts-ignore
+    expect(() => lcm(4, {})).toThrow()
+  })
+})

From 0390653b688b06fe4d49864b719aeb78558ec466 Mon Sep 17 00:00:00 2001
From: "pranav.date" <pranavdate@epps-erp.in>
Date: Mon, 13 Oct 2025 10:40:54 +0530
Subject: [PATCH 2/2] change sin package json

---
 package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index e667e1eea2..ec4d5c84c7 100644
--- a/package.json
+++ b/package.json
@@ -13,11 +13,11 @@
   "author": "TheAlgorithms",
   "license": "GPL-3.0",
   "devDependencies": {
+    "@vitest/coverage-v8": "^1.2.1",
     "globby": "^13.2.2",
     "husky": "^8.0.3",
     "prettier": "^3.0.3",
-    "vitest": "^1.2.1",
-    "@vitest/coverage-v8": "^1.2.1"
+    "vitest": "^3.2.4"
   },
   "engines": {
     "node": ">=20.6.0"