fix: Resolve TypeScript errors

Signed-off-by: Hermes Agent <hermes@nosuchhost>

client/node_modules/levelup/package.json

@@ -0,0 +1,70 @@
+{
+  "name": "levelup",
+  "version": "4.4.0",
+  "description": "Fast & simple storage - a Node.js-style LevelDB wrapper",
+  "license": "MIT",
+  "main": "lib/levelup.js",
+  "scripts": {
+    "test": "standard && hallmark && (nyc -s node test/self.js | faucet) && nyc report",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "test-browsers": "airtap --loopback airtap.local test/self.js > airtap.log",
+    "test-browser-local": "airtap --local test/self.js",
+    "hallmark": "hallmark --fix",
+    "dependency-check": "dependency-check --no-dev .",
+    "prepublishOnly": "npm run dependency-check"
+  },
+  "dependencies": {
+    "deferred-leveldown": "~5.3.0",
+    "level-errors": "~2.0.0",
+    "level-iterator-stream": "~4.0.0",
+    "level-supports": "~1.0.0",
+    "xtend": "~4.0.0"
+  },
+  "devDependencies": {
+    "after": "^0.8.2",
+    "airtap": "^3.0.0",
+    "async-each": "^1.0.3",
+    "browserify": "^16.0.0",
+    "concat-stream": "^2.0.0",
+    "coveralls": "^3.0.2",
+    "delayed": "^2.0.0",
+    "dependency-check": "^4.1.0",
+    "encoding-down": "^6.2.0",
+    "faucet": "^0.0.1",
+    "hallmark": "^2.0.0",
+    "level-community": "^3.0.0",
+    "level-concat-iterator": "^2.0.1",
+    "memdown": "^5.0.0",
+    "nyc": "^14.0.0",
+    "pinkie": "^2.0.4",
+    "run-parallel": "^1.1.9",
+    "run-series": "^1.1.8",
+    "safe-buffer": "^5.1.0",
+    "simple-concat": "^1.0.0",
+    "sinon": "^7.4.2",
+    "standard": "^14.1.0",
+    "tape": "^4.7.0",
+    "trickle": "0.0.2"
+  },
+  "hallmark": {
+    "community": "level-community"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Level/levelup.git"
+  },
+  "homepage": "https://github.com/Level/levelup",
+  "keywords": [
+    "level",
+    "leveldb",
+    "stream",
+    "database",
+    "db",
+    "store",
+    "storage",
+    "json"
+  ],
+  "engines": {
+    "node": ">=6"
+  }
+}