fix: Resolve TypeScript errors

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

client/node_modules/abstract-leveldown/package.json

@@ -0,0 +1,54 @@
+{
+  "name": "abstract-leveldown",
+  "version": "6.2.3",
+  "description": "An abstract prototype matching the LevelDOWN API",
+  "license": "MIT",
+  "main": "index.js",
+  "browser": {
+    "./next-tick.js": "./next-tick-browser.js"
+  },
+  "scripts": {
+    "test": "standard && hallmark && nyc node test/self.js",
+    "test-browsers": "airtap --coverage --loopback airtap.local test/self.js",
+    "test-browser-local": "airtap --coverage --local test/self.js",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "hallmark": "hallmark --fix",
+    "dependency-check": "dependency-check . test/*.js",
+    "prepublishOnly": "npm run dependency-check"
+  },
+  "dependencies": {
+    "buffer": "^5.5.0",
+    "immediate": "^3.2.3",
+    "level-concat-iterator": "~2.0.0",
+    "level-supports": "~1.0.0",
+    "xtend": "~4.0.0"
+  },
+  "devDependencies": {
+    "airtap": "^3.0.0",
+    "coveralls": "^3.0.2",
+    "dependency-check": "^3.3.0",
+    "hallmark": "^2.0.0",
+    "level-community": "^3.0.0",
+    "nyc": "^14.0.0",
+    "sinon": "^7.2.4",
+    "standard": "^14.0.0",
+    "tape": "^4.10.0"
+  },
+  "hallmark": {
+    "community": "level-community"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Level/abstract-leveldown.git"
+  },
+  "homepage": "https://github.com/Level/abstract-leveldown",
+  "keywords": [
+    "level",
+    "leveldb",
+    "leveldown",
+    "levelup"
+  ],
+  "engines": {
+    "node": ">=6"
+  }
+}