Migrate to yarn

shared-stuff/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "commonjs",
+    "checkJs": false,
+    "outDir": "dist",
+    "rootDir": ".",
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "strictNullChecks": true,
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+  },
+  "exclude": ["node_modules", "dist"],
+  "include": [
+    "./*",
+  ]
+}