diff --git a/src/test/assert.d.ts b/src/test/assert.d.ts
deleted file mode 100644
index 59fc4358..00000000
--- a/src/test/assert.d.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-declare module "assert" {
-    function internal (value: any, message?: string): void;
-    namespace internal {
-        export class AssertionError implements Error {
-            name: string;
-            message: string;
-            actual: any;
-            expected: any;
-            operator: string;
-            generatedMessage: boolean;
-
-            constructor(options?: {message?: string; actual?: any; expected?: any;
-                                  operator?: string; stackStartFunction?: Function});
-        }
-
-        export function fail(actual?: any, expected?: any, message?: string, operator?: string): void;
-        export function ok(value: any, message?: string): void;
-        export function equal(actual: any, expected: any, message?: string): void;
-        export function notEqual(actual: any, expected: any, message?: string): void;
-        export function deepEqual(actual: any, expected: any, message?: string): void;
-        export function notDeepEqual(acutal: any, expected: any, message?: string): void;
-        export function strictEqual(actual: any, expected: any, message?: string): void;
-        export function notStrictEqual(actual: any, expected: any, message?: string): void;
-        export function deepStrictEqual(actual: any, expected: any, message?: string): void;
-        export function notDeepStrictEqual(actual: any, expected: any, message?: string): void;
-        export var throws: {
-            (block: Function, message?: string): void;
-            (block: Function, error: Function, message?: string): void;
-            (block: Function, error: RegExp, message?: string): void;
-            (block: Function, error: (err: any) => boolean, message?: string): void;
-        };
-
-        export var doesNotThrow: {
-            (block: Function, message?: string): void;
-            (block: Function, error: Function, message?: string): void;
-            (block: Function, error: RegExp, message?: string): void;
-            (block: Function, error: (err: any) => boolean, message?: string): void;
-        };
-
-        export function ifError(value: any): void;
-    }
-
-    export = internal;
-}
\ No newline at end of file