Update dependencies

test/ethereumjs-testing.d.ts

@@ -0,0 +1,11 @@
+declare module 'ethereumjs-testing' {
+  type Tests = {
+    [index: string]: {
+      in: string,
+      out: string,
+      root: string
+    }
+  };
+
+  export const getSingleFile: (name: string) => Tests;
+}

test/getTests.ts

@@ -0,0 +1,23 @@
+// Copyright 2017-2018 @polkadot/util-rlp authors & contributors
+// This software may be modified and distributed under the terms
+// of the MPL-2.0 license. See the LICENSE file for details.
+
+import BN from 'bn.js';
+import { getSingleFile } from 'ethereumjs-testing';
+
+import bnToU8a from '@polkadot/util/bn/toU8a';
+
+export default function getTests (file: string) {
+  const tests = getSingleFile(file);
+
+  return Object.keys(tests).map((name) => ({
+    name,
+    input: tests[name].in[0] !== '#'
+      ? tests[name].in
+      : bnToU8a(new BN(tests[name].in.slice(1)), -1, true),
+    output: tests[name].out
+      ? `0x${tests[name].out.toLowerCase()}`
+      : undefined,
+    root: tests[name].root
+  }));
+}