diff --git a/tldjs/index.d.ts b/tldjs/index.d.ts
new file mode 100644
index 0000000000..6917c8f067
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+++ b/tldjs/index.d.ts
@@ -0,0 +1,48 @@
+// Type definitions for tldjs v1.7
+// Project: https://github.com/oncletom/tld.js
+// Definitions by: Joshua DeVinney <https://github.com/geoffreak>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * tld.js methods getDomain and getSubdomain are designed to work only with valid TLDs.
+ * This way, you can trust what a domain is. Unfortunately, localhost is a valid hostname but it is not a TLD.
+ * Optionally use validHosts to add it. `tld.validHosts = ['localhost'];`
+ */
+export declare var validHosts: string[];
+
+/**
+ * Checks if the TLD is valid for a given host.
+ * @param host The TLD/host/url to check
+ * @return {boolean}
+ */
+export declare function tldExists(host: string): boolean;
+
+/**
+ * Returns the fully qualified domain from a host string.
+ * @param host The host/url to check
+ * @return {string|null} a domain string if any, otherwise null
+ */
+export declare function getDomain(host: string): string | null;
+
+/**
+ * Returns the complete subdomain for a given host.
+ * @param host The host/url to check
+ * @return {string|null} a subdomain string if any, blank string if subdomain is empty, otherwise null
+ */
+export declare function getSubdomain(host: string): string | null;
+
+/**
+ * Returns the public suffix (including exact matches)
+ * @param host The host/url to check
+ * @return {string|null} a public suffix string if any, otherwise null
+ */
+export declare function getPublicSuffix(host: string): string | null;
+
+/**
+ * Checking if a host string is valid
+ * It's usually a preliminary check before trying to use getDomain or anything else
+ * Beware: it does not check if the TLD exists.
+ * @param host The host/url to check
+ * @return {boolean}
+ */
+export declare function isValid(host: string): string | null;
diff --git a/tldjs/tldjs-tests.ts b/tldjs/tldjs-tests.ts
new file mode 100644
index 0000000000..d405563853
--- /dev/null
+++ b/tldjs/tldjs-tests.ts
@@ -0,0 +1,49 @@
+import * as tld from 'tldjs';
+
+tld.tldExists('google.com'); // returns `true`
+tld.tldExists('google.local'); // returns `false` (not an explicit registered TLD)
+tld.tldExists('com'); // returns `true`
+tld.tldExists('uk'); // returns `true`
+tld.tldExists('co.uk'); // returns `true` (because `uk` is a valid TLD)
+tld.tldExists('amazon.fancy.uk'); // returns `true` (still because `uk` is a valid TLD)
+tld.tldExists('amazon.co.uk'); // returns `true` (still because `uk` is a valid TLD)
+tld.tldExists('https://user:password@example.co.uk:8080/some/path?and&query#hash'); // returns `true`
+
+tld.getDomain('google.com'); // returns `google.com`
+tld.getDomain('fr.google.com'); // returns `google.com`
+tld.getDomain('fr.google.google'); // returns `google.google`
+tld.getDomain('foo.google.co.uk'); // returns `google.co.uk`
+tld.getDomain('t.co'); // returns `t.co`
+tld.getDomain('fr.t.co'); // returns `t.co`
+tld.getDomain('https://user:password@example.co.uk:8080/some/path?and&query#hash'); // returns `example.co.uk`
+
+tld.getSubdomain('google.com'); // returns ``
+tld.getSubdomain('fr.google.com'); // returns `fr`
+tld.getSubdomain('google.co.uk'); // returns ``
+tld.getSubdomain('foo.google.co.uk'); // returns `foo`
+tld.getSubdomain('moar.foo.google.co.uk'); // returns `moar.foo`
+tld.getSubdomain('t.co'); // returns ``
+tld.getSubdomain('fr.t.co'); // returns `fr`
+tld.getSubdomain('https://user:password@example.co.uk:8080/some/path?and&query#hash'); // returns ``
+
+tld.getPublicSuffix('google.com'); // returns `com`
+tld.getPublicSuffix('fr.google.com'); // returns `com`
+tld.getPublicSuffix('google.co.uk'); // returns `co.uk`
+tld.getPublicSuffix('s3.amazonaws.com'); // returns `s3.amazonaws.com`
+
+tld.isValid('google.com'); // returns `true`
+tld.isValid('.google.com'); // returns `false`
+tld.isValid('my.fake.domain'); // returns `true`
+tld.isValid('localhost'); // returns `false`
+tld.isValid('https://user:password@example.co.uk:8080/some/path?and&query#hash'); // returns `true`
+
+// You'll need to use this import syntax to set valid hosts
+import tld2 = require('tldjs');
+
+tld2.getDomain('localhost');           // returns null
+tld2.getSubdomain('vhost.localhost');  // returns null
+
+tld2.validHosts = ['localhost'];
+
+tld2.getDomain('localhost');           // returns 'localhost'
+tld2.getSubdomain('vhost.localhost');  // returns 'vhost'
diff --git a/tldjs/tsconfig.json b/tldjs/tsconfig.json
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index 0000000000..97866b9ac4
--- /dev/null
+++ b/tldjs/tsconfig.json
@@ -0,0 +1,19 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "strictNullChecks": false,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "tldjs-tests.ts"
+    ]
+}
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