diff --git a/payment/index.d.ts b/payment/index.d.ts
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index 0000000000..e635a19028
--- /dev/null
+++ b/payment/index.d.ts
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+// Type definitions for payment 2.1
+// Project: https://github.com/jessepollak/payment#readme
+// Definitions by: Alexandre Paré <https://github.com/apare>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+interface Fns {
+    /**
+     * Validates a card number:
+     * * Validates numbers
+     * * Validates Luhn algorithm
+     * * Validates length
+     */
+    validateCardNumber(cardNumber: string): boolean;
+    /**
+     * Validates a card expiry:
+     * * Validates numbers
+     * * Validates in the future
+     * * Supports year shorthand
+     * * Supports formatted as formatCardExpiry input value
+     */
+    validateCardExpiry(monthYear: string, year?: string): boolean;
+    /**
+     * Validates a card CVC:
+     * * Validates number
+     * * Validates length to 4
+     */
+    validateCardCVC(cvc: string, type: string): boolean;
+    /**
+     * Returns a card type. Either:
+     * * visa
+     * * mastercard
+     * * discover
+     * * amex
+     * * jcb
+     * * dinersclub
+     * * maestro
+     * * laser
+     * * unionpay
+     * * elo
+     * 
+     * The function will return null if the card type can't be determined.
+     */
+    cardType(cardNumber: string): string;
+    /**
+     * Parses a credit card expiry in the form of MM/YYYY, returning an object containing the `month` and `year`.
+     * Shorthand years, such as `13` are also supported (and converted into the longhand, e.g. `2013`).
+     */
+    cardExpiryVal(monthYear: string | HTMLInputElement): MonthYear;
+}
+
+interface MonthYear {
+    month: number;
+    year: number;
+}
+
+declare var Payment: {
+    /**
+     * Formats card numbers:
+     * * Includes a space between every 4 digits
+     * * Restricts input to numbers
+     * * Limits to 16 numbers
+     * * Supports American Express formatting
+     * * Adds a class of the card type (e.g. 'visa') to the input
+     */
+    formatCardNumber(elem: HTMLInputElement): HTMLInputElement;
+    /**
+     * Formats card expiry:
+     * * Includes a / between the month and year
+     * * Restricts input to numbers
+     * * Restricts length
+     */
+    formatCardExpiry(elem: HTMLInputElement): HTMLInputElement;
+    /**
+     * Formats card CVC:
+     * * Restricts length to 4 numbers
+     * * Restricts input to numbers
+     */
+    formatCardCVC(elem: HTMLInputElement): HTMLInputElement;
+    /**
+     * General numeric input restriction.
+     */
+    restrictNumeric(elem: HTMLInputElement): HTMLInputElement;
+
+    fns: Fns;
+};
+
+export = Payment;
diff --git a/payment/payment-tests.ts b/payment/payment-tests.ts
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--- /dev/null
+++ b/payment/payment-tests.ts
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+import * as Payment from "payment";
+
+var input = document.getElementById('input') as HTMLInputElement;
+
+Payment.restrictNumeric(input);
+Payment.formatCardNumber(input);
+Payment.formatCardExpiry(input);
+Payment.formatCardCVC(input);
+
+var card = "1234 5678 9012 3456";
+
+var cardType = Payment.fns.cardType(card);
+Payment.fns.validateCardNumber(card);
+Payment.fns.validateCardExpiry("1 / 20");
+Payment.fns.validateCardExpiry("1", "20");
+Payment.fns.validateCardCVC("123", cardType);
\ No newline at end of file
diff --git a/payment/tsconfig.json b/payment/tsconfig.json
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index 0000000000..0b2323bef2
--- /dev/null
+++ b/payment/tsconfig.json
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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "payment-tests.ts"
+    ]
+}
diff --git a/payment/tslint.json b/payment/tslint.json
new file mode 100644
index 0000000000..377cc837d4
--- /dev/null
+++ b/payment/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }