Added PAN validator with tests

README.md

@@ -194,7 +194,7 @@ Sanitizer                              | Description
 **trim(input [, chars])**              | trim characters (whitespace by default) from both sides of the input.
 **unescape(input)**                    | replace HTML encoded entities with `<`, `>`, `&`, `'`, `"`, `` ` ``, `\` and `/`.
 **whitelist(input, chars)**            | remove characters that do not appear in the whitelist. The characters are used in a RegExp and so you will need to escape some chars, e.g. `whitelist(input, '\\[\\]')`.
-
+**isPAN(str)** | check if the string is a valid Indian PAN number.
 ### XSS Sanitization
 
 XSS sanitization was removed from the library in [2d5d6999](https://github.com/validatorjs/validator.js/commit/2d5d6999541add350fb396ef02dc42ca3215049e).

build-browser.js

@@ -6,7 +6,7 @@ import babelPresetEnv from "@babel/preset-env";
 import pkg from "./package.json";
 
 rollup({
-  entry: "src/index.js",
+  input: "src/index.js",
   plugins: [
     babel({
       presets: [[babelPresetEnv, { modules: false }]],
@@ -16,15 +16,15 @@ rollup({
 })
   .then((bundle) =>
     bundle.write({
-      dest: "validator.js",
-      format: "umd",
-      moduleName: pkg.name,
-      banner: `/*!\n${String(fs.readFileSync("./LICENSE"))
-        .trim()
-        .split("\n")
-        .map((l) => ` * ${l}`)
-        .join("\n")}\n */`,
-    })
+  file: "validator.js",  
+  format: "umd",
+  name: pkg.name,         
+  banner: `/*!\n${String(fs.readFileSync("./LICENSE"))
+    .trim()
+    .split("\n")
+    .map((l) => ` * ${l}`)
+    .join("\n")}\n */`,
+})
   )
   .catch((e) => {
     process.stderr.write(`${e.message}\n`);

package.json

@@ -49,8 +49,8 @@
     "npm-run-all": "^4.1.5",
     "nyc": "^14.1.0",
     "rimraf": "^3.0.0",
-    "rollup": "^0.47.0",
-    "rollup-plugin-babel": "^4.0.1",
+    "rollup": "^2.80.0",
+    "rollup-plugin-babel": "^4.4.0",
     "timezone-mock": "^1.3.6",
     "uglify-js": "^3.0.19"
   },
@@ -72,5 +72,8 @@
   "engines": {
     "node": ">= 0.10"
   },
-  "license": "MIT"
+  "license": "MIT",
+  "dependencies": {
+    "validator": "^13.15.35"
+  }
 }

src/index.js

@@ -129,6 +129,7 @@ import isLicensePlate from './lib/isLicensePlate';
 import isStrongPassword from './lib/isStrongPassword';
 
 import isVAT from './lib/isVAT';
+import isPAN from './lib/isPAN';
 
 const version = '13.15.35';
 
@@ -244,6 +245,7 @@ const validator = {
   isTime,
   isLicensePlate,
   isVAT,
+  isPAN,
   ibanLocales,
 };
 

src/lib/isPAN.js

@@ -0,0 +1,4 @@
+export default function isPAN(str) {
+  const panRegex = /^[A-Z]{5}[0-9]{4}[A-Z]$/;
+  return panRegex.test(str);
+}

test/validators/isPAN.test.js

@@ -0,0 +1,24 @@
+import validator from '../../src/index';
+import assert from 'assert';
+
+describe('isPAN', () => {
+  it('valid PAN', () => {
+    assert.strictEqual(validator.isPAN('ABCDE1234F'), true);
+  });
+
+  it('invalid length', () => {
+    assert.strictEqual(validator.isPAN('ABCDE123F'), false);
+  });
+
+  it('lowercase should fail', () => {
+    assert.strictEqual(validator.isPAN('abcde1234f'), false);
+  });
+
+  it('wrong format', () => {
+    assert.strictEqual(validator.isPAN('1234ABCDE1'), false);
+  });
+
+  it('empty string', () => {
+    assert.strictEqual(validator.isPAN(''), false);
+  });
+});