fix: Resolve TypeScript errors

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

client/node_modules/level-iterator-stream/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "level-iterator-stream",
+  "version": "4.0.2",
+  "description": "Turn an abstract-leveldown iterator into a readable stream",
+  "license": "MIT",
+  "scripts": {
+    "test": "standard && hallmark && (nyc -s node test.js | faucet) && nyc report",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "hallmark": "hallmark --fix",
+    "dependency-check": "dependency-check . test.js",
+    "prepublishOnly": "npm run dependency-check"
+  },
+  "dependencies": {
+    "inherits": "^2.0.4",
+    "readable-stream": "^3.4.0",
+    "xtend": "^4.0.2"
+  },
+  "devDependencies": {
+    "coveralls": "^3.0.2",
+    "dependency-check": "^3.3.0",
+    "faucet": "^0.0.1",
+    "hallmark": "^2.0.0",
+    "level-community": "^3.0.0",
+    "leveldown": "^5.0.0",
+    "nyc": "^14.0.0",
+    "secret-event-listener": "^1.0.0",
+    "standard": "^14.0.0",
+    "tape": "^4.4.0",
+    "tempy": "0.2.1",
+    "through2": "^3.0.0"
+  },
+  "hallmark": {
+    "community": "level-community"
+  },
+  "repository": "Level/iterator-stream",
+  "homepage": "https://github.com/Level/iterator-stream",
+  "keywords": [
+    "level"
+  ],
+  "engines": {
+    "node": ">=6"
+  },
+  "greenkeeper": {
+    "ignore": [
+      "tempy"
+    ]
+  }
+}