Fix import style and add strictFunctionTypes

types/blob-to-buffer/blob-to-buffer-tests.ts

@@ -1,4 +1,4 @@
-import * as blobToBuffer from "blob-to-buffer";
+import blobToBuffer = require("blob-to-buffer");
 
 blobToBuffer(new Blob(), (error, buffer) => {
     console.log(error);

types/blob-to-buffer/tsconfig.json

@@ -8,6 +8,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"