From ec34a04678df80aad99088f94a129649ddef3015 Mon Sep 17 00:00:00 2001
From: SpiderMath <71999854+SpiderMath@users.noreply.github.com>
Date: Sun, 24 Oct 2021 01:58:06 +0530
Subject: [PATCH 1/3] Added LucasSeries

---
 Maths/LucasSeries.js           | 33 +++++++++++++++++++++++++++++++++
 Maths/test/LucasSeries.test.js |  7 +++++++
 2 files changed, 40 insertions(+)
 create mode 100644 Maths/LucasSeries.js
 create mode 100644 Maths/test/LucasSeries.test.js

diff --git a/Maths/LucasSeries.js b/Maths/LucasSeries.js
new file mode 100644
index 0000000000..b6c2099f8a
--- /dev/null
+++ b/Maths/LucasSeries.js
@@ -0,0 +1,33 @@
+/*
+  Program to get the Nth Lucas Number
+  Article on Lucas Number: https://en.wikipedia.org/wiki/Lucas_number
+  Examples:
+    > loopLucas(1)
+    1
+    > loopLucas(20)
+    15127
+    > loopLucas(100)
+    792070839848372100000
+*/
+
+/**
+ * @param {Number} index The position of the number you want to get from the Lucas Series
+ */
+function loopLucas (index) {
+  // index can't be negative
+  if (index < 0) throw new RangeError('Index cannot be Negative')
+
+  // index can't be a decimal
+  if (Math.floor(index) !== index) throw new RangeError('Index cannot be a Decimal')
+
+  let a = 2
+  let b = 1
+  for (let i = 0; i < index; i++) {
+    const temp = a + b
+    a = b
+    b = temp
+  }
+  return a
+}
+
+export { loopLucas }
diff --git a/Maths/test/LucasSeries.test.js b/Maths/test/LucasSeries.test.js
new file mode 100644
index 0000000000..7482b2c56e
--- /dev/null
+++ b/Maths/test/LucasSeries.test.js
@@ -0,0 +1,7 @@
+import { loopLucas } from '../LucasSeries'
+
+describe('Nth Lucas Number', () => {
+  it('should return the 20th Lucas Number', () => {
+    expect(loopLucas(20)).toBe(15127)
+  })
+})

From cc9f0bfd2a2263c853005a47f447a4f9e905d0df Mon Sep 17 00:00:00 2001
From: SpiderMath <71999854+SpiderMath@users.noreply.github.com>
Date: Sun, 24 Oct 2021 23:49:04 +0530
Subject: [PATCH 2/3] Added more tests and renamed function

---
 Maths/LucasSeries.js           |  4 ++--
 Maths/test/LucasSeries.test.js | 12 ++++++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/Maths/LucasSeries.js b/Maths/LucasSeries.js
index b6c2099f8a..e3a57b73a4 100644
--- a/Maths/LucasSeries.js
+++ b/Maths/LucasSeries.js
@@ -13,7 +13,7 @@
 /**
  * @param {Number} index The position of the number you want to get from the Lucas Series
  */
-function loopLucas (index) {
+function lucas (index) {
   // index can't be negative
   if (index < 0) throw new RangeError('Index cannot be Negative')
 
@@ -30,4 +30,4 @@ function loopLucas (index) {
   return a
 }
 
-export { loopLucas }
+export { lucas }
diff --git a/Maths/test/LucasSeries.test.js b/Maths/test/LucasSeries.test.js
index 7482b2c56e..21d6d09042 100644
--- a/Maths/test/LucasSeries.test.js
+++ b/Maths/test/LucasSeries.test.js
@@ -1,7 +1,15 @@
-import { loopLucas } from '../LucasSeries'
+import { lucas } from '../LucasSeries'
 
 describe('Nth Lucas Number', () => {
   it('should return the 20th Lucas Number', () => {
-    expect(loopLucas(20)).toBe(15127)
+    expect(lucas(20)).toBe(15127)
+  })
+
+  it('should return the 20th Lucas Number', () => {
+    expect(lucas(0)).toBe(2)
+  })
+
+  it('should return the 20th Lucas Number', () => {
+    expect(lucas(100)).toBe(792070839848372100000)
   })
 })

From a43a01e856640950563a296f90581d7418334fff Mon Sep 17 00:00:00 2001
From: SpiderMath <71999854+SpiderMath@users.noreply.github.com>
Date: Mon, 25 Oct 2021 09:39:23 +0530
Subject: [PATCH 3/3] Changed RangeError to TypeError

---
 Maths/LucasSeries.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Maths/LucasSeries.js b/Maths/LucasSeries.js
index e3a57b73a4..11156d7210 100644
--- a/Maths/LucasSeries.js
+++ b/Maths/LucasSeries.js
@@ -15,10 +15,10 @@
  */
 function lucas (index) {
   // index can't be negative
-  if (index < 0) throw new RangeError('Index cannot be Negative')
+  if (index < 0) throw new TypeError('Index cannot be Negative')
 
   // index can't be a decimal
-  if (Math.floor(index) !== index) throw new RangeError('Index cannot be a Decimal')
+  if (Math.floor(index) !== index) throw new TypeError('Index cannot be a Decimal')
 
   let a = 2
   let b = 1