Convert hak to TypeScript (#289)

* Convert hak to TypeScript

* Fix linter & remove stray log line

* Fix more linting errors

In one case by switching to import() and hence esnext

* Return type for getNodeModuleBin

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

* More types

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

scripts/hak/fetchDeps.ts

@@ -0,0 +1,26 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import mkdirp from 'mkdirp';
+import { DependencyInfo } from './dep';
+import HakEnv from './hakEnv';
+
+export default async function fetchDeps(hakEnv: HakEnv, moduleInfo: DependencyInfo): Promise<void> {
+    await mkdirp(moduleInfo.moduleDotHakDir);
+    if (moduleInfo.scripts.fetchDeps) {
+        await moduleInfo.scripts.fetchDeps(hakEnv, moduleInfo);
+    }
+}