diff --git a/abstract-leveldown/abstract-leveldown-tests.ts b/abstract-leveldown/abstract-leveldown-tests.ts
new file mode 100644
index 0000000..e69de29
diff --git a/abstract-leveldown/index.d.ts b/abstract-leveldown/index.d.ts
new file mode 100644
index 0000000..b7ee579
--- /dev/null
+++ b/abstract-leveldown/index.d.ts
@@ -0,0 +1,9 @@
+// Type definitions for abstract-leveldown
+// Project: https://github.com/Level/abstract-leveldown
+// Definitions by: Jaco Greeff <https://github.com/jacogr>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module 'abstract-leveldown' {
+export interface AbstractLevelDown {
+}
+}
diff --git a/abstract-leveldown/tsconfig.json b/abstract-leveldown/tsconfig.json
new file mode 100644
index 0000000..932e246
--- /dev/null
+++ b/abstract-leveldown/tsconfig.json
@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "bn.js-tests.ts"]
+}
diff --git a/abstract-leveldown/tslint.json b/abstract-leveldown/tslint.json
new file mode 100644
index 0000000..3db14f8
--- /dev/null
+++ b/abstract-leveldown/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }
diff --git a/interface-connection/index.d.ts b/interface-connection/index.d.ts
index be846bc..d376feb 100644
--- a/interface-connection/index.d.ts
+++ b/interface-connection/index.d.ts
@@ -7,9 +7,7 @@
 import PeerInfo from 'peer-info';
 
 declare module 'interface-connection' {
-interface Connection {
+export interface Connection {
     getPeerInfo (cb: (error: Error | null, peerInfo?: PeerInfo) => any): void;
 }
-
-export = Connection;
 }
diff --git a/interface-transport/index.d.ts b/interface-transport/index.d.ts
index 86062c0..432adea 100644
--- a/interface-transport/index.d.ts
+++ b/interface-transport/index.d.ts
@@ -4,8 +4,6 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module 'interface-transport' {
-interface Transport {
+export interface Transport {
 }
-
-export = Transport;
 }
diff --git a/leveldown/index.d.ts b/leveldown/index.d.ts
new file mode 100644
index 0000000..6899d23
--- /dev/null
+++ b/leveldown/index.d.ts
@@ -0,0 +1,13 @@
+// Type definitions for LevelDown 3.0.0
+// Project: https://github.com/level/memdown
+// Definitions by: Thiago de Arruda <https://github.com/tarruda>
+//                 Jaco Greeff <https://github.com/jacogr>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { AbstractLevelDown } from 'abstract-leveldown';
+
+declare module 'leveldown' {
+const leveldown: (path: string) => AbstractLevelDown;
+
+export default leveldown;
+}
diff --git a/leveldown/leveldown-tests.ts b/leveldown/leveldown-tests.ts
new file mode 100644
index 0000000..7969ad3
--- /dev/null
+++ b/leveldown/leveldown-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import leveldown from 'leveldown';
+
+leveldown('/tmp/test');
diff --git a/leveldown/tsconfig.json b/leveldown/tsconfig.json
new file mode 100644
index 0000000..932e246
--- /dev/null
+++ b/leveldown/tsconfig.json
@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "bn.js-tests.ts"]
+}
diff --git a/leveldown/tslint.json b/leveldown/tslint.json
new file mode 100644
index 0000000..3db14f8
--- /dev/null
+++ b/leveldown/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }
diff --git a/libp2p-railing/index.d.ts b/libp2p-railing/index.d.ts
index 9056f08..ff202b5 100644
--- a/libp2p-railing/index.d.ts
+++ b/libp2p-railing/index.d.ts
@@ -22,5 +22,5 @@ export class LibP2pRailing {
   on (event: Events, cb: (peerInfo: PeerInfo) => any): void;
 }
 
-export = LibP2pRailing;
+export default LibP2pRailing;
 }
diff --git a/libp2p-tcp/index.d.ts b/libp2p-tcp/index.d.ts
index ca81230..0a235c4 100644
--- a/libp2p-tcp/index.d.ts
+++ b/libp2p-tcp/index.d.ts
@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // @ts-ignore
-import Transport from 'interface-transport';
+import { Transport } from 'interface-transport';
 
 declare module 'libp2p-tcp' {
 export class LibP2pTcp implements Transport {
diff --git a/libp2p-tcp/libp2p-tcp-tests.ts b/libp2p-tcp/libp2p-tcp-tests.ts
index e69de29..ffc1f99 100644
--- a/libp2p-tcp/libp2p-tcp-tests.ts
+++ b/libp2p-tcp/libp2p-tcp-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import TCP from 'libp2p-tcp';
+
+new TCP();
diff --git a/libp2p-webrtc-direct/index.d.ts b/libp2p-webrtc-direct/index.d.ts
index 9735ea2..175bbdd 100644
--- a/libp2p-webrtc-direct/index.d.ts
+++ b/libp2p-webrtc-direct/index.d.ts
@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // @ts-ignore
-import Transport from 'interface-transport';
+import { Transport } from 'interface-transport';
 
 declare module 'libp2p-webrtc-direct' {
 export class LibP2pWebRtcDirect implements Transport {
diff --git a/libp2p-webrtc-direct/libp2p-webrtc-direct-tests.ts b/libp2p-webrtc-direct/libp2p-webrtc-direct-tests.ts
index e69de29..3a598e4 100644
--- a/libp2p-webrtc-direct/libp2p-webrtc-direct-tests.ts
+++ b/libp2p-webrtc-direct/libp2p-webrtc-direct-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import T from 'libp2p-webrtc-direct';
+
+new T();
diff --git a/libp2p-webrtc-star/index.d.ts b/libp2p-webrtc-star/index.d.ts
index 9d795f9..521216b 100644
--- a/libp2p-webrtc-star/index.d.ts
+++ b/libp2p-webrtc-star/index.d.ts
@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // @ts-ignore
-import Transport from 'interface-transport';
+import { Transport } from 'interface-transport';
 
 declare module 'libp2p-webrtc-star' {
 export class LibP2pWebRtcStar implements Transport {
diff --git a/libp2p-webrtc-star/libp2p-webrtc-star-tests.ts b/libp2p-webrtc-star/libp2p-webrtc-star-tests.ts
index e69de29..92070ba 100644
--- a/libp2p-webrtc-star/libp2p-webrtc-star-tests.ts
+++ b/libp2p-webrtc-star/libp2p-webrtc-star-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import T from 'libp2p-webrtc-star';
+
+new T();
diff --git a/libp2p-websockets/index.d.ts b/libp2p-websockets/index.d.ts
index 719fa80..8b89346 100644
--- a/libp2p-websockets/index.d.ts
+++ b/libp2p-websockets/index.d.ts
@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // @ts-ignore
-import Transport from 'interface-transport';
+import { Transport } from 'interface-transport';
 
 declare module 'libp2p-websockets' {
 export class LibP2pWebsockets implements Transport {
diff --git a/libp2p-websockets/libp2p-websockets-tests.ts b/libp2p-websockets/libp2p-websockets-tests.ts
index e69de29..9bac725 100644
--- a/libp2p-websockets/libp2p-websockets-tests.ts
+++ b/libp2p-websockets/libp2p-websockets-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import T from 'libp2p-websockets';
+
+new T();
diff --git a/libp2p/index.d.ts b/libp2p/index.d.ts
index be7778e..a6af667 100644
--- a/libp2p/index.d.ts
+++ b/libp2p/index.d.ts
@@ -4,9 +4,9 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // @ts-ignore
-import Connection from 'interface-connection';
+import { Connection } from 'interface-connection';
 // @ts-ignore
-import Transport from 'interface-transport';
+import { Transport } from 'interface-transport';
 // @ts-ignore
 import { Libp2pKadDHT } from 'libp2p-kad-dht';
 // @ts-ignore
@@ -49,5 +49,7 @@ export class LibP2p {
     stop (cb: (error: Error | null) => any): void;
 }
 
-export default LibP2p;
+const libp2p: LibP2p;
+
+export default libp2p;
 }
diff --git a/memdown/LICENSE b/memdown/LICENSE
deleted file mode 100644
index 4b1ad51..0000000
--- a/memdown/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-    MIT License
-
-    Copyright (c) Microsoft Corporation. All rights reserved.
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE
diff --git a/memdown/README.md b/memdown/README.md
deleted file mode 100644
index d2499a4..0000000
--- a/memdown/README.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# Installation
-> `npm install --save @types/leveldown`
-
-# Summary
-This package contains type definitions for LevelDown (https://github.com/level/leveldown).
-
-# Details
-Files were exported from https://www.github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/leveldown
-
-Additional Details
- * Last updated: Fri, 05 May 2017 04:05:52 GMT
- * Dependencies: node
- * Global values: none
-
-# Credits
-These definitions were written by Thiago de Arruda <https://github.com/tarruda>.
diff --git a/memdown/index.d.ts b/memdown/index.d.ts
index f44e5e9..f574424 100644
--- a/memdown/index.d.ts
+++ b/memdown/index.d.ts
@@ -4,145 +4,10 @@
 //                 Jaco Greeff <https://github.com/jacogr>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-/// <reference types="node" />
+import { AbstractLevelDown } from 'abstract-leveldown';
 
 declare module 'memdown' {
-namespace memdown {
-    type Bytes = string | Buffer;
-    type ErrCallback = (error: any) => void;
-    type ErrNumberCallback = (error: any, value: number) => void;
-    type ErrBufferCallback = (error: any, value: Buffer) => void;
-    type ErrStringCallback = (error: any, value: string) => void;
-    type KeyAsStringCallback = (error: any, key: string, value: Buffer) => void;
-    type ValueAsStringCallback = (error: any, key: Buffer, value: string) => void;
-    type KeyAndValueAsStringCallback = (error: any, key: string, value: string) => void;
-    type KeyAndValueAsBufferCallback = (error: any, key: Buffer, value: Buffer) => void;
+const memdown: () => AbstractLevelDown;
 
-    interface PutBatch {
-        type: "put";
-        key: Bytes;
-        value: Bytes;
-    }
-
-    interface DelBatch {
-        type: "del";
-        key: Bytes;
-    }
-
-    type Batch = PutBatch | DelBatch;
-
-    interface OpenOptions {
-        createIfMissing?: boolean;
-        errorIfExists?: boolean;
-        compression?: boolean;
-        cacheSize?: number;
-    }
-
-    interface OpenAdvancedOptions extends OpenOptions {
-        writeBufferSize?: number;
-        blockSize?: number;
-        maxOpenFiles?: number;
-        blockRestartInterval?: number;
-        maxFileSize?: number;
-    }
-
-    interface WriteOptions {
-        sync?: boolean;
-    }
-
-    interface ReadOptions {
-        fillCache?: boolean;
-    }
-
-    interface BufferReadOptions extends ReadOptions {
-        asBuffer?: true;
-    }
-
-    interface StringReadOptions extends ReadOptions {
-        asBuffer: false;
-    }
-
-    interface IteratorOptions {
-        gt?: Bytes;
-        lt?: Bytes;
-        gte?: Bytes;
-        lte?: Bytes;
-        reverse?: boolean;
-        keys?: boolean;
-        values?: boolean;
-        limit?: number;
-        fillCache?: boolean;
-    }
-
-    interface KeyAsStringIteratorOptions extends IteratorOptions {
-        keyAsBuffer: false;
-        valueAsBuffer?: true;
-    }
-
-    interface ValueAsStringIteratorOptions extends IteratorOptions {
-        keyAsBuffer?: true;
-        valueAsBuffer: false;
-    }
-
-    interface KeyAndValueAsStringIteratorOptions extends IteratorOptions {
-        keyAsBuffer: false;
-        valueAsBuffer: false;
-    }
-
-    interface KeyAndValueAsBufferIteratorOptions extends IteratorOptions {
-        keyAsBuffer?: true;
-        valueAsBuffer?: true;
-    }
-
-    interface Iterator {
-        seek(key: Bytes): void;
-        end(callback: ErrCallback): void;
-    }
-
-    interface KeyAsStringIterator extends Iterator {
-        next(callback: KeyAsStringCallback): void;
-    }
-
-    interface ValueAsStringIterator extends Iterator {
-        next(callback: ValueAsStringCallback): void;
-    }
-
-    interface KeyAndValueAsStringIterator extends Iterator {
-        next(callback: KeyAndValueAsStringCallback): void;
-    }
-
-    interface KeyAndValueAsBufferIterator extends Iterator {
-        next(callback: KeyAndValueAsBufferCallback): void;
-    }
-
-    interface MemDown {
-        open(callback: ErrCallback): void;
-        open(options: OpenOptions, callback: ErrCallback): void;
-        close(callback?: ErrCallback): void;
-        put(key: Bytes, value: Bytes, callback: ErrCallback): void;
-        put(key: Bytes, value: Bytes, options: WriteOptions, callback: ErrCallback): void;
-        get(key: Bytes, callback: ErrBufferCallback): void;
-        get(key: Bytes, options: BufferReadOptions, callback: ErrBufferCallback): void;
-        get(key: Bytes, options: StringReadOptions, callback: ErrStringCallback): void;
-        del(key: Bytes, callback?: ErrCallback): void;
-        del(key: Bytes, options: WriteOptions, callback?: ErrCallback): void;
-        batch(operations: Batch[], callback?: ErrCallback): void;
-        batch(operations: Batch[], options?: WriteOptions, callback?: ErrCallback): void;
-        approximateSize(start: Bytes, end: Bytes, callback: ErrNumberCallback): void;
-        compactRange(start: Bytes, end: Bytes, callback: ErrCallback): void;
-        getProperty(property: string): string;
-        iterator(options?: KeyAsStringIteratorOptions): KeyAsStringIterator;
-        iterator(options?: ValueAsStringIteratorOptions): ValueAsStringIterator;
-        iterator(options?: KeyAndValueAsStringIteratorOptions): KeyAndValueAsStringIterator;
-        iterator(options?: KeyAndValueAsBufferIteratorOptions): KeyAndValueAsBufferIterator;
-        destroy(location: string, callback: ErrCallback): void;
-        repair(location: string, callback: ErrCallback): void;
-    }
-
-    type Constructor = () => MemDown;
-}
-
-const memdownConstrctor: memdown.Constructor;
-
-export = memdownConstrctor;
+export default memdown;
 }
diff --git a/memdown/memdown-tests.ts b/memdown/memdown-tests.ts
new file mode 100644
index 0000000..f4db882
--- /dev/null
+++ b/memdown/memdown-tests.ts
@@ -0,0 +1,4 @@
+// @ts-ignore
+import memdown from 'memdown';
+
+memdown();
diff --git a/memdown/package.json b/memdown/package.json
deleted file mode 100644
index 9a0f748..0000000
--- a/memdown/package.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-    "name": "@types/leveldown",
-    "version": "1.7.0",
-    "description": "TypeScript definitions for LevelDown",
-    "license": "MIT",
-    "contributors": [
-        {
-            "name": "Thiago de Arruda",
-            "url": "https://github.com/tarruda"
-        }
-    ],
-    "main": "",
-    "repository": {
-        "type": "git",
-        "url": "https://www.github.com/DefinitelyTyped/DefinitelyTyped.git"
-    },
-    "scripts": {},
-    "dependencies": {
-        "@types/node": "*"
-    },
-    "peerDependencies": {},
-    "typesPublisherContentHash": "8ad2a943006b3c5296b92869b9a520d84e733c731edabe2e500821f18f35b56f",
-    "typeScriptVersion": "2.0"
-}
\ No newline at end of file
diff --git a/memdown/tsconfig.json b/memdown/tsconfig.json
new file mode 100644
index 0000000..932e246
--- /dev/null
+++ b/memdown/tsconfig.json
@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "bn.js-tests.ts"]
+}
diff --git a/memdown/tslint.json b/memdown/tslint.json
new file mode 100644
index 0000000..3db14f8
--- /dev/null
+++ b/memdown/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }