add Dankort support

README.md

@@ -41,8 +41,8 @@ console.log(ambiguousCards[2].niceType); // 'Maestro'
 
 | Key        | Type     | Description                                                                                                                                                                                                                                                                                                                                                                  |
 | ---------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `niceType` | `String` | A pretty printed representation of the card brand.<br/>- `Visa`<br />- `Mastercard`<br />- `American Express`<br />- `Diners Club`<br />- `Discover`<br />- `JCB`<br />- `UnionPay`<br />- `Maestro`<br />- `Mir`<br />- `Elo`<br />- `Hiper`<br />- `Hipercard`                                                                                                             |
-| `type`     | `String` | A code-friendly presentation of the card brand (useful to class names in CSS). Please refer to Card Type "Constants" below for the list of possible values.<br/>- `visa`<br />- `mastercard`<br />- `american-express`<br />- `diners-club`<br />- `discover`<br />- `jcb`<br />- `unionpay`<br />- `maestro`<br />- `mir`<br /> - `elo`<br /> - `hiper`<br /> - `hipercard` |
+| `niceType` | `String` | A pretty printed representation of the card brand.<br/>- `Visa`<br />- `Mastercard`<br />- `American Express`<br />- `Diners Club`<br />- `Discover`<br />- `JCB`<br />- `UnionPay`<br />- `Maestro`<br />- `Mir`<br />- `Elo`<br />- `Hiper`<br />- `Hipercard`<br />- `Dankort`                                                                                                             |
+| `type`     | `String` | A code-friendly presentation of the card brand (useful to class names in CSS). Please refer to Card Type "Constants" below for the list of possible values.<br/>- `visa`<br />- `mastercard`<br />- `american-express`<br />- `diners-club`<br />- `discover`<br />- `jcb`<br />- `unionpay`<br />- `maestro`<br />- `mir`<br /> - `elo`<br /> - `hiper`<br /> - `hipercard`<br /> - `dankort` |
 | `gaps`     | `Array`  | The expected indeces of gaps in a string representation of the card number. For example, in a Visa card, `4111 1111 1111 1111`, there are expected spaces in the 4th, 8th, and 12th positions. This is useful in setting your own formatting rules.                                                                                                                          |
 | `lengths`  | `Array`  | The expected lengths of the card number as an array of strings (excluding spaces and `/` characters).                                                                                                                                                                                                                                                                        |
 | `code`     | `Object` | The information regarding the security code for the determined card. Learn more about the [code object](#code) below.                                                                                                                                                                                                                                                        |
@@ -58,6 +58,7 @@ If no card types are found, this returns an empty array.
 Named variables are provided for each of the supported card types:
 
 - `AMERICAN_EXPRESS`
+- `DANKORT`
 - `DINERS_CLUB`
 - `DISCOVER`
 - `ELO`
@@ -88,6 +89,7 @@ Card brands provide different nomenclature for their security codes as well as v
 | `Elo`              | `CVE`  | 3    |
 | `Hiper`            | `CVC`  | 3    |
 | `Hipercard`        | `CVC`  | 4    |
+| `Dankort`          | `CVC`  | 3    |
 
 A full response for a `Visa` card will look like this:
 
@@ -146,6 +148,8 @@ card is _either_ a Visa or an Elo card. Once the card number becomes `401178`,
 the modules sees that an exact match for the ELO bin has been made, and the module reports
 that the card can only be an Elo card.
 
+The above rule is also applied for identifying Dankort cards, which start with `5019`.
+
 #### Adding Card Types
 
 You can add additional card brands not supportted by the the module with `addCard`. Pass in the configuration object.
@@ -195,7 +199,8 @@ Adding new cards puts them at the bottom of the priority for testing. Priority i
   creditCardType.types.ELO,
   creditCardType.types.MIR,
   creditCardType.types.HIPER,
-  creditCardType.types.HIPERCARD
+  creditCardType.types.HIPERCARD,
+  creditCardType.types.DANKORT
 ];
 ```
 

__tests__/index.js

@@ -155,7 +155,9 @@ describe('creditCardType', () => {
     ['637609', 'hiper'],
     ['637599', 'hiper'],
     ['637612', 'hiper'],
-    ['637568', 'hiper']
+    ['637568', 'hiper'],
+
+    ['5019', 'dankort']
   ])('Matches %s to brand %s', (number, type) => {
     const actual = creditCardType(number);
 
@@ -183,13 +185,15 @@ describe('creditCardType', () => {
         'elo',
         'mir',
         'hiper',
-        'hipercard'
+        'hipercard',
+        'dankort'
       ]
     ],
     ['2', ['mastercard', 'jcb', 'mir']],
     ['3', ['american-express', 'diners-club', 'jcb']],
-    ['5', ['mastercard', 'maestro', 'elo']],
-    ['50', ['maestro', 'elo']],
+    ['5', ['mastercard', 'maestro', 'elo', 'dankort']],
+    ['50', ['maestro', 'elo', 'dankort']],
+    ['501', ['maestro', 'dankort']],
     ['6', ['discover', 'unionpay', 'maestro', 'elo', 'hiper', 'hipercard']],
     ['60', ['discover', 'maestro', 'hipercard']],
     ['601', ['discover', 'maestro']],
@@ -262,7 +266,8 @@ describe('creditCardType', () => {
     ['Diners Club', '30569309025904', {size: 3, name: 'CVV'}],
     ['UnionPay', '6220558812340000', {size: 3, name: 'CVN'}],
     ['Maestro', '6304000000000000', {size: 3, name: 'CVC'}],
-    ['Mir', '2200000000000000', {size: 3, name: 'CVP2'}]
+    ['Mir', '2200000000000000', {size: 3, name: 'CVP2'}],
+    ['Dankort', '501912345678', {size: 3, name: 'CVC'}]
   ])('returns security codes for %s', (brand, number, code) => {
     const parsedCode = creditCardType(number)[0].code;
 
@@ -280,7 +285,8 @@ describe('creditCardType', () => {
     ['Visa', '4', {type: 'visa', lengths: [16, 18, 19]}],
     ['Mastercard', '54', {type: 'mastercard', lengths: [16]}],
     ['JCB', '35', {type: 'jcb', lengths: [16, 17, 18, 19]}],
-    ['Mir', '220', {type: 'mir', lengths: [16, 17, 18, 19]}]
+    ['Mir', '220', {type: 'mir', lengths: [16, 17, 18, 19]}],
+    ['Dankort', '5019', {type: 'dankort', lengths: [16]}]
   ])('returns lengths for %s', (brand, number, meta) => {
     const cardType = creditCardType(number)[0];
 

index.js

@@ -21,7 +21,8 @@ var cardNames = {
   ELO: 'elo',
   MIR: 'mir',
   HIPER: 'hiper',
-  HIPERCARD: 'hipercard'
+  HIPERCARD: 'hipercard',
+  DANKORT: 'dankort'
 };
 
 var ORIGINAL_TEST_ORDER = [
@@ -36,7 +37,8 @@ var ORIGINAL_TEST_ORDER = [
   cardNames.ELO,
   cardNames.MIR,
   cardNames.HIPER,
-  cardNames.HIPERCARD
+  cardNames.HIPERCARD,
+  cardNames.DANKORT
 ];
 
 testOrder = clone(ORIGINAL_TEST_ORDER);

lib/card-types.js

@@ -134,7 +134,8 @@ var cardTypes = {
     type: 'maestro',
     patterns: [
       493698,
-      [500000, 506698],
+      [5000, 5018],
+      [502000, 506698],
       [506779, 508999],
       [56, 59],
       63,
@@ -227,6 +228,19 @@ var cardTypes = {
       name: 'CVC',
       size: 3
     }
+  },
+  dankort: {
+    niceType: 'Dankort',
+    type: 'dankort',
+    patterns: [
+      5019
+    ],
+    gaps: [4, 8, 12],
+    lengths: [16],
+    code: {
+      name: 'CVC',
+      size: 3
+    }
   }
 };