internal: incomplete vault systems behind feature flag (#2340)

packages/snjs/lib/tsconfig.json

@@ -8,6 +8,8 @@
     "emitDeclarationOnly": true,
     "esModuleInterop": true,
     "isolatedModules": true,
+    "lib": ["es6", "dom", "es2016", "es2017"],
+    "module": "esnext",
     "moduleResolution": "node",
     "newLine": "lf",
     "noFallthroughCasesInSwitch": true,
@@ -17,11 +19,11 @@
     "noImplicitThis": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
-    "skipLibCheck": true,
     "outDir": "../dist/@types",
+    "skipLibCheck": true,
     "strict": true,
     "strictNullChecks": true,
-    "target": "esnext",
+    "target": "es6",
     "paths": {
       "@Lib/*": ["*"],
       "@Services/*": ["Services/*"]