diff --git a/index.d.ts b/index.d.ts
index 6e6a1e70..66f6ffd2 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,4 @@
-declare module NpmCheck { 
+declare module "npm-check" {
   interface INpmCheckOptions {
     global?: boolean;
     update?: boolean;
@@ -10,9 +10,22 @@ declare module NpmCheck {
     currentState?: Object;
   }
 
-  type INpmCheckGetSetValues = "packages" | "debug" | "global" | "cwd" | "cwdPackageJson" | "emoji";
+  type INpmCheckGetSetValues =
+    | "packages"
+    | "debug"
+    | "global"
+    | "cwd"
+    | "cwdPackageJson"
+    | "emoji";
 
-  type INpmVersionBumpType = "patch" | "minor" | "major" | "prerelease" | "build" | "nonSemver" | null;
+  type INpmVersionBumpType =
+    | "patch"
+    | "minor"
+    | "major"
+    | "prerelease"
+    | "build"
+    | "nonSemver"
+    | null;
 
   interface INpmCheckCurrentState {
     get: (key: INpmCheckGetSetValues) => INpmCheckPackage[];
@@ -20,32 +33,93 @@ declare module NpmCheck {
   }
 
   interface INpmCheckPackage {
-    moduleName: string;                  // name of the module. 
-    homepage: string;                    // url to the home page. 
-    regError: any;                       // error communicating with the registry 
-    pkgError: any;                       // error reading the package.json 
-    latest: string;                      // latest according to the registry. 
-    installed: string;                   // version installed 
-    isInstalled: boolean;                // Is it installed? 
-    notInstalled: boolean;               // Is it installed? 
-    packageWanted: string;               // Requested version from the package.json. 
-    packageJson: string;                 // Version or range requested in the parent package.json. 
-    devDependency: boolean;              // Is this a devDependency? 
-    usedInScripts: undefined | string[], // Array of `scripts` in package.json that use this module. 
-    mismatch: boolean;                   // Does the version installed not match the range in package.json? 
-    semverValid: string;                 // Is the installed version valid semver? 
-    easyUpgrade: boolean;                // Will running just `npm install` upgrade the module? 
-    bump: INpmVersionBumpType;           // What kind of bump is required to get the latest 
-    unused: boolean;                     // Is this module used in the code? 
+    /**
+     * name of the module.
+     */
+    moduleName: string;
+
+    /**
+     * url to the home page.
+     */
+    homepage: string;
+
+    /**
+     * error communicating with the registry
+     */
+    regError: any;
+
+    /**
+     * error reading the package.json
+     */
+    pkgError: any;
+
+    /**
+     * latest according to the registry.
+     */
+    latest: string;
+
+    /**
+     * version installed
+     */
+    installed: string;
+
+    /**
+     * Is it installed?
+     */
+    isInstalled: boolean;
+    /**
+     * Is it installed?
+     */
+    notInstalled: boolean;
+
+    /**
+     * Requested version from the package.json.
+     */
+    packageWanted: string;
+
+    /**
+     * Version or range requested in the parent package.json.
+     */
+    packageJson: string;
+
+    /**
+     * Is this a devDependency?
+     */
+    devDependency: boolean;
+
+    /**
+     * Array of `scripts` in package.json that use this module.
+     */
+    usedInScripts: undefined | string[];
+
+    /**
+     * Does the version installed not match the range in package.json?
+     */
+    mismatch: boolean;
+
+    /**
+     * Is the installed version valid semver?
+     */
+    semverValid: string;
+
+    /**
+     * Will running just `npm install` upgrade the module?
+     */
+    easyUpgrade: boolean;
+
+    /**
+     * What kind of bump is required to get the latest
+     */
+    bump: INpmVersionBumpType;
+
+    /**
+     * Is this module used in the code?
+     */
+    unused: boolean;
   }
 
   //The default function returns a promise
-  export default function(options: INpmCheckOptions): {
+  export default function (options: INpmCheckOptions): {
     then(stateFn: (state: INpmCheckCurrentState) => void): void;
   };
-  
 }
-
-declare module "npm-check" {
-    export = NpmCheck.default;
-}
\ No newline at end of file
diff --git a/package.json b/package.json
index dd23834b..7ca15f90 100755
--- a/package.json
+++ b/package.json
@@ -62,7 +62,8 @@
   "files": [
     "bin",
     "lib",
-    "lib-es5"
+    "lib-es5",
+    "index.d.ts"
   ],
   "dependencies": {
     "callsite-record": "^4.1.4",