feat: Email validations

Author: Kathuria

src/__tests__/email-validaton.test.ts

@@ -0,0 +1,30 @@
+import { isValid_Email } from '../email-validation';
+
+describe('isValid_Email', () => {
+  it('should return true for valid email addresses', () => {
+    expect(isValid_Email('[email protected]')).toBe(true);
+    expect(isValid_Email('[email protected]')).toBe(true);
+    expect(isValid_Email('[email protected]')).toBe(true);
+  });
+
+  it('should return false for invalid email addresses', () => {
+    expect(isValid_Email('plainaddress')).toBe(false);
+    expect(isValid_Email('@missingusername.com')).toBe(false);
+    expect(isValid_Email('[email protected]')).toBe(false);
+    expect(isValid_Email('username@com')).toBe(false);
+    expect(isValid_Email('username@com.')).toBe(false);
+  });
+
+  it('should return false for emails with spaces', () => {
+    expect(isValid_Email('username@ example.com')).toBe(false);
+  });
+
+  it('should return false for null or undefined inputs', () => {
+    expect(isValid_Email(null as any)).toBe(false);
+    expect(isValid_Email(undefined as any)).toBe(false);
+  });
+
+  it('should return false for empty string', () => {
+    expect(isValid_Email('')).toBe(false);
+  });
+});

src/email-validation.ts

@@ -0,0 +1,4 @@
+export const isValid_Email = (email: string): boolean => {
+        const re = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+        return re.test(email);
+      }

src/index.ts

@@ -1,2 +1,3 @@
 export * from './aadhaar-validation';
+export * from './email-validation'
 export * from './ssn-validation';