diff --git a/jest.config.js b/jest.config.ts
similarity index 100%
rename from jest.config.js
rename to jest.config.ts
diff --git a/lib/client.d.ts b/lib/client.d.ts
index 3bf3b69..b35b994 100644
--- a/lib/client.d.ts
+++ b/lib/client.d.ts
@@ -17,5 +17,5 @@ export declare class DgraphClient {
   debug(msg: string): void
   anyClient(): DgraphClientStub
 }
-export declare function isJwtExpired(err: unknown): boolean
+export declare function isJwtExpired(err: any): boolean
 export declare function deleteEdges(mu: types.Mutation, uid: string, ...predicates: string[]): void
diff --git a/lib/txn.d.ts b/lib/txn.d.ts
index 7a88a81..ac45969 100644
--- a/lib/txn.d.ts
+++ b/lib/txn.d.ts
@@ -18,7 +18,7 @@ export declare class Txn {
   queryWithVars(
     q: string,
     vars?: {
-      [k: string]: unknown
+      [k: string]: any
     },
     metadata?: grpc.Metadata,
     options?: grpc.CallOptions,
@@ -27,7 +27,7 @@ export declare class Txn {
   queryRDFWithVars(
     q: string,
     vars?: {
-      [k: string]: unknown
+      [k: string]: any
     },
     metadata?: grpc.Metadata,
     options?: grpc.CallOptions,
diff --git a/lib/txn.js b/lib/txn.js
index 5f4c1ff..a2f72e8 100644
--- a/lib/txn.js
+++ b/lib/txn.js
@@ -248,10 +248,10 @@ var Txn = (function () {
   }
   Txn.prototype.doRequest = function (req, metadata, options) {
     return __awaiter(this, void 0, void 0, function () {
-      var mutationList, resp, c, operation, _a, _b, e_1, _c, _d, e_2
+      var mutationList, resp, c, operation, _a, _b, e_1, _c, _d, _e
       var _this = this
-      return __generator(this, function (_e) {
-        switch (_e.label) {
+      return __generator(this, function (_f) {
+        switch (_f.label) {
           case 0:
             mutationList = req.getMutationsList()
             if (this.finished) {
@@ -289,33 +289,33 @@ var Txn = (function () {
                 })
               })
             }
-            _e.label = 1
+            _f.label = 1
           case 1:
-            _e.trys.push([1, 3, , 11])
+            _f.trys.push([1, 3, , 11])
             _b = (_a = types).createResponse
             return [4, operation()]
           case 2:
-            resp = _b.apply(_a, [_e.sent()])
+            resp = _b.apply(_a, [_f.sent()])
             return [3, 11]
           case 3:
-            e_1 = _e.sent()
+            e_1 = _f.sent()
             if (!((0, client_1.isJwtExpired)(e_1) === true)) return [3, 6]
             return [4, c.retryLogin(metadata, options)]
           case 4:
-            _e.sent()
+            _f.sent()
             _d = (_c = types).createResponse
             return [4, operation()]
           case 5:
-            resp = _d.apply(_c, [_e.sent()])
+            resp = _d.apply(_c, [_f.sent()])
             return [3, 10]
           case 6:
-            _e.trys.push([6, 8, , 9])
+            _f.trys.push([6, 8, , 9])
             return [4, this.discard(metadata, options)]
           case 7:
-            _e.sent()
+            _f.sent()
             return [3, 9]
           case 8:
-            e_2 = _e.sent()
+            _e = _f.sent()
             return [3, 9]
           case 9:
             throw (0, util_1.isAbortedError)(e_1) || (0, util_1.isConflictError)(e_1)
@@ -336,7 +336,7 @@ var Txn = (function () {
   }
   Txn.prototype.commit = function (metadata, options) {
     return __awaiter(this, void 0, void 0, function () {
-      var c, operation, e_3
+      var c, operation, e_2
       var _this = this
       return __generator(this, function (_a) {
         switch (_a.label) {
@@ -364,8 +364,8 @@ var Txn = (function () {
             _a.sent()
             return [3, 8]
           case 3:
-            e_3 = _a.sent()
-            if (!((0, client_1.isJwtExpired)(e_3) === true)) return [3, 6]
+            e_2 = _a.sent()
+            if (!((0, client_1.isJwtExpired)(e_2) === true)) return [3, 6]
             return [4, c.retryLogin(metadata, options)]
           case 4:
             _a.sent()
@@ -374,7 +374,7 @@ var Txn = (function () {
             _a.sent()
             return [3, 7]
           case 6:
-            throw (0, util_1.isAbortedError)(e_3) ? errors_1.ERR_ABORTED : e_3
+            throw (0, util_1.isAbortedError)(e_2) ? errors_1.ERR_ABORTED : e_2
           case 7:
             return [3, 8]
           case 8:
@@ -385,7 +385,7 @@ var Txn = (function () {
   }
   Txn.prototype.discard = function (metadata, options) {
     return __awaiter(this, void 0, void 0, function () {
-      var c, operation, e_4
+      var c, operation, e_3
       var _this = this
       return __generator(this, function (_a) {
         switch (_a.label) {
@@ -414,8 +414,8 @@ var Txn = (function () {
             _a.sent()
             return [3, 8]
           case 3:
-            e_4 = _a.sent()
-            if (!((0, client_1.isJwtExpired)(e_4) === true)) return [3, 6]
+            e_3 = _a.sent()
+            if (!((0, client_1.isJwtExpired)(e_3) === true)) return [3, 6]
             return [4, c.retryLogin(metadata, options)]
           case 4:
             _a.sent()
@@ -424,7 +424,7 @@ var Txn = (function () {
             _a.sent()
             return [3, 7]
           case 6:
-            throw (0, util_1.isAbortedError)(e_4) ? errors_1.ERR_ABORTED : e_4
+            throw (0, util_1.isAbortedError)(e_3) ? errors_1.ERR_ABORTED : e_3
           case 7:
             return [3, 8]
           case 8:
diff --git a/lib/types.d.ts b/lib/types.d.ts
index 577f88a..2c29294 100644
--- a/lib/types.d.ts
+++ b/lib/types.d.ts
@@ -1,27 +1,27 @@
 import * as messages from "../generated/api_pb"
 export declare class Payload extends messages.Payload {
-  getData(): unknown
+  getData(): string | Uint8Array
   getData_asB64(): string
   getData_asU8(): Uint8Array
-  setData(value: unknown): void
+  setData(value: any): void
 }
 export declare function createPayload(oldPayload: messages.Payload): Payload
 export declare class Response extends messages.Response {
-  getJson(): unknown
+  getJson(): string | Uint8Array
   getJson_asB64(): string
   getJson_asU8(): Uint8Array
-  setJson(value: unknown): void
+  setJson(value: any): void
 }
 export declare function createResponse(oldResponse: messages.Response): Response
 export declare class Mutation extends messages.Mutation {
-  getSetJson(): unknown
+  getSetJson(): string | Uint8Array
   getSetJson_asB64(): string
   getSetJson_asU8(): Uint8Array
-  setSetJson(value: unknown): void
-  getDeleteJson(): unknown
+  setSetJson(value: any): void
+  getDeleteJson(): string | Uint8Array
   getDeleteJson_asB64(): string
   getDeleteJson_asU8(): Uint8Array
-  setDeleteJson(value: unknown): void
+  setDeleteJson(value: any): void
   getSetNquads(): Uint8Array | string
   getSetNquads_asB64(): string
   getSetNquads_asU8(): Uint8Array
diff --git a/lib/util.d.ts b/lib/util.d.ts
index ac4b632..21e7a63 100644
--- a/lib/util.d.ts
+++ b/lib/util.d.ts
@@ -1,18 +1,18 @@
 import * as jspb from "google-protobuf"
-export declare function errorCode(err: unknown): {
+export declare function errorCode(err: any): {
   valid: boolean
   code: number
 }
-export declare function isAbortedError(err: unknown): boolean
-export declare function isConflictError(err: unknown): boolean
-export declare function isUnauthenticatedError(err: unknown): boolean
+export declare function isAbortedError(err: any): boolean
+export declare function isConflictError(err: any): boolean
+export declare function isUnauthenticatedError(err: any): boolean
 export declare function promisify1<A, T>(
   f: (arg: A, cb: (err?: Error, res?: T) => void) => void,
-  thisContext?: unknown,
+  thisContext?: any,
 ): (arg: A) => Promise<T>
 export declare function promisify3<A, B, C, T>(
   f: (argA: A, argB: B, argC: C, cb: (err?: Error, res?: T) => void) => void,
-  thisContext?: unknown,
+  thisContext?: any,
 ): (argA: A, argB: B, argC: C) => Promise<T>
 export declare function stringifyMessage(msg: jspb.Message): string
 export { isBase64 } from "is-base64"
@@ -20,4 +20,4 @@ export declare function strToB64(str: string): string
 export declare function strToU8(str: string): Uint8Array
 export declare function b64ToStr(b64Str: string): string
 export declare function u8ToStr(arr: Uint8Array): string
-export declare function strToJson(jsonStr: string): unknown
+export declare function strToJson(jsonStr: string): any
diff --git a/lib/util.js b/lib/util.js
index 793750d..de37863 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -18,7 +18,7 @@ function errorCode(err) {
   if (
     err === undefined ||
     typeof err !== "object" ||
-    !err.hasOwnProperty("code") ||
+    !Object.prototype.hasOwnProperty.call(err, "code") ||
     typeof err.code !== "number"
   ) {
     return {
@@ -92,7 +92,7 @@ function u8ToStr(arr) {
 function strToJson(jsonStr) {
   try {
     return JSON.parse(jsonStr)
-  } catch (e) {
+  } catch (_a) {
     return {}
   }
 }
diff --git a/package-lock.json b/package-lock.json
index be6acc5..359c43e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,10 +18,13 @@
       "devDependencies": {
         "@trunkio/launcher": "^1.3.2",
         "@types/google-protobuf": "^3.15.12",
+        "@types/jest": "^29.5.14",
         "@types/node": "^22.10.5",
         "eslint": "^9.18.0",
         "grpc-tools": "^1.12.4",
         "jest": "^29.7.0",
+        "ts-jest": "^29.2.5",
+        "ts-node": "^10.9.2",
         "typescript": "^5.7.2",
         "typescript-eslint": "^8.20.0"
       }
@@ -91,18 +94,6 @@
         "url": "https://opencollective.com/babel"
       }
     },
-    "node_modules/@babel/core/node_modules/json5": {
-      "version": "2.2.3",
-      "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
-      "integrity": "sha512-XmOWe7eyHYH14cLdVPoyg+GOH3rYX++KpzrylJwSW98t3Nk+U8XOl8FWKOgwtzdb8lXGf6zYwDUzeHMWfxasyg==",
-      "dev": true,
-      "bin": {
-        "json5": "lib/cli.js"
-      },
-      "engines": {
-        "node": ">=6"
-      }
-    },
     "node_modules/@babel/core/node_modules/semver": {
       "version": "6.3.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
@@ -637,6 +628,30 @@
       "integrity": "sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==",
       "dev": true
     },
+    "node_modules/@cspotcode/source-map-support": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/@cspotcode/source-map-support/-/source-map-support-0.8.1.tgz",
+      "integrity": "sha512-IchNf6dN4tHoMFIn/7OE8LWZ19Y6q/67Bmf6vnGREv8RSbBVb9LPJxEcnwrcwX6ixSvaiGoomAUvu4YSxXrVgw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "0.3.9"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@cspotcode/source-map-support/node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.9",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.9.tgz",
+      "integrity": "sha512-3Belt6tdc8bPgAtbcmdtNJlirVoTmEb5e2gC94PnkwEW9jI6CAHUeoG85tjWP5WquqfavoMtMwiG4P926ZKKuQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
     "node_modules/@eslint-community/eslint-utils": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.4.0.tgz",
@@ -1453,6 +1468,34 @@
         "node": ">=18.0.0"
       }
     },
+    "node_modules/@tsconfig/node10": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.11.tgz",
+      "integrity": "sha512-DcRjDCujK/kCk/cUe8Xz8ZSpm8mS3mNNpta+jGCA6USEDfktlNvm1+IuZ9eTcDbNk41BHwpHHeW+N1lKCz4zOw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node12": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node12/-/node12-1.0.11.tgz",
+      "integrity": "sha512-cqefuRsh12pWyGsIoBKJA9luFu3mRxCA+ORZvA4ktLSzIuCUtWVxGIuXigEwO5/ywWFMZ2QEGKWvkZG1zDMTag==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node14": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node14/-/node14-1.0.3.tgz",
+      "integrity": "sha512-ysT8mhdixWK6Hw3i1V2AeRqZ5WfXg1G43mqoYlM2nc6388Fq5jcXyr5mRsqViLx/GJYdoL0bfXD8nmF+Zn/Iow==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node16": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node16/-/node16-1.0.4.tgz",
+      "integrity": "sha512-vxhUy4J8lyeyinH7Azl1pdd43GJhZH/tP2weN8TntQblOY+A0XbT8DJk1/oCPuOOyg/Ja757rG0CgHcWC8OfMA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -1545,6 +1588,17 @@
         "@types/istanbul-lib-report": "*"
       }
     },
+    "node_modules/@types/jest": {
+      "version": "29.5.14",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.14.tgz",
+      "integrity": "sha512-ZN+4sdnLUbo8EVvVc2ao0GFW6oVrQRPn4K2lglySj7APvSrgzxHiNNK99us4WDMi57xxA2yggblIAMNhXOotLQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "expect": "^29.0.0",
+        "pretty-format": "^29.0.0"
+      }
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -1833,6 +1887,19 @@
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
+    "node_modules/acorn-walk": {
+      "version": "8.3.4",
+      "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.3.4.tgz",
+      "integrity": "sha512-ueEepnujpqee2o5aIYnvHU6C0A42MNdsIDeqy5BydrkuC5R1ZuUFnm27EeFJGoEHJQgn3uleRvmTXaJgfXbt4g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "acorn": "^8.11.0"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/agent-base": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
@@ -1945,6 +2012,13 @@
         "node": ">=10"
       }
     },
+    "node_modules/arg": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.3.tgz",
+      "integrity": "sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/argparse": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
@@ -1954,6 +2028,13 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "node_modules/async": {
+      "version": "3.2.6",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.6.tgz",
+      "integrity": "sha512-htCUDlxyyCLMgaM3xXg0C0LW2xqfuQ6p05pCEIsXuyQ+a1koYKTuBMzRNwmybfLgvJDMd0r1LTn4+E0Ti6C2AA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/babel-jest": {
       "version": "29.7.0",
       "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-29.7.0.tgz",
@@ -2130,6 +2211,19 @@
         "node": "^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7"
       }
     },
+    "node_modules/bs-logger": {
+      "version": "0.2.6",
+      "resolved": "https://registry.npmjs.org/bs-logger/-/bs-logger-0.2.6.tgz",
+      "integrity": "sha512-pd8DCoxmbgc7hyPKOvxtqNcjYoOsABPQdcCUjGp3d42VR2CX1ORhk2A87oqqu5R1kk+76nsxZupkmyd+MVtCog==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fast-json-stable-stringify": "2.x"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/bser": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/bser/-/bser-2.1.1.tgz",
@@ -2331,6 +2425,13 @@
         "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
       }
     },
+    "node_modules/create-require": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
+      "integrity": "sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -2415,6 +2516,16 @@
         "node": ">=8"
       }
     },
+    "node_modules/diff": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
+      "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
     "node_modules/diff-sequences": {
       "version": "29.6.3",
       "resolved": "https://registry.npmjs.org/diff-sequences/-/diff-sequences-29.6.3.tgz",
@@ -2424,6 +2535,22 @@
         "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
       }
     },
+    "node_modules/ejs": {
+      "version": "3.1.10",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.10.tgz",
+      "integrity": "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "jake": "^10.8.5"
+      },
+      "bin": {
+        "ejs": "bin/cli.js"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/electron-to-chromium": {
       "version": "1.5.34",
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.34.tgz",
@@ -2803,6 +2930,39 @@
         "node": ">=16.0.0"
       }
     },
+    "node_modules/filelist": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/filelist/-/filelist-1.0.4.tgz",
+      "integrity": "sha512-w1cEuf3S+DrLCQL7ET6kz+gmlJdbq9J7yXCSjK/OZCPA+qEN1WyF4ZAf0YYJa4/shHJra2t/d/r8SV4Ji+x+8Q==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "minimatch": "^5.0.1"
+      }
+    },
+    "node_modules/filelist/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/filelist/node_modules/minimatch": {
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.6.tgz",
+      "integrity": "sha512-lKwV/1brpG6mBUFHtb7NUmtABCb2WZZmm2wNiOA5hAb8VdCS4B3dtMWyvcoViccwAW/COERjXLt0zP1zXUN26g==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/fill-range": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
@@ -3349,6 +3509,25 @@
         "node": ">=8"
       }
     },
+    "node_modules/jake": {
+      "version": "10.9.2",
+      "resolved": "https://registry.npmjs.org/jake/-/jake-10.9.2.tgz",
+      "integrity": "sha512-2P4SQ0HrLQ+fw6llpLnOaGAvN2Zu6778SJMrCUwns4fOoG9ayrTiZk3VV8sCPkVZF8ab0zksVpS8FDY5pRCNBA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "async": "^3.2.3",
+        "chalk": "^4.0.2",
+        "filelist": "^1.0.4",
+        "minimatch": "^3.1.2"
+      },
+      "bin": {
+        "jake": "bin/cli.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/jest": {
       "version": "29.7.0",
       "resolved": "https://registry.npmjs.org/jest/-/jest-29.7.0.tgz",
@@ -3958,6 +4137,19 @@
       "integrity": "sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==",
       "dev": true
     },
+    "node_modules/json5": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
+      "integrity": "sha512-XmOWe7eyHYH14cLdVPoyg+GOH3rYX++KpzrylJwSW98t3Nk+U8XOl8FWKOgwtzdb8lXGf6zYwDUzeHMWfxasyg==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "json5": "lib/cli.js"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/keyv": {
       "version": "4.5.4",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",
@@ -4025,6 +4217,13 @@
       "resolved": "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz",
       "integrity": "sha512-TwuEnCnxbc3rAvhf/LbG7tJUDzhqXyFnv3dtzLOPgCG/hODL7WFnsbwktkD7yUV0RrreP/l1PALq/YSg6VvjlA=="
     },
+    "node_modules/lodash.memoize": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
+      "integrity": "sha512-t7j+NzmgnQzTAYXcsHYLgimltOV1MXHtlOWf6GjL9Kj8GK5FInw5JotxvbOs+IvV1/Dzo04/fCGfLVs7aXb4Ag==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/lodash.merge": {
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
@@ -4069,6 +4268,13 @@
         "semver": "bin/semver.js"
       }
     },
+    "node_modules/make-error": {
+      "version": "1.3.6",
+      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.6.tgz",
+      "integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==",
+      "dev": true,
+      "license": "ISC"
+    },
     "node_modules/makeerror": {
       "version": "1.0.12",
       "resolved": "https://registry.npmjs.org/makeerror/-/makeerror-1.0.12.tgz",
@@ -5065,6 +5271,99 @@
         "typescript": ">=4.8.4"
       }
     },
+    "node_modules/ts-jest": {
+      "version": "29.2.5",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.2.5.tgz",
+      "integrity": "sha512-KD8zB2aAZrcKIdGk4OwpJggeLcH1FgrICqDSROWqlnJXGCXK4Mn6FcdK2B6670Xr73lHMG1kHw8R87A0ecZ+vA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "bs-logger": "^0.2.6",
+        "ejs": "^3.1.10",
+        "fast-json-stable-stringify": "^2.1.0",
+        "jest-util": "^29.0.0",
+        "json5": "^2.2.3",
+        "lodash.memoize": "^4.1.2",
+        "make-error": "^1.3.6",
+        "semver": "^7.6.3",
+        "yargs-parser": "^21.1.1"
+      },
+      "bin": {
+        "ts-jest": "cli.js"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || ^18.0.0 || >=20.0.0"
+      },
+      "peerDependencies": {
+        "@babel/core": ">=7.0.0-beta.0 <8",
+        "@jest/transform": "^29.0.0",
+        "@jest/types": "^29.0.0",
+        "babel-jest": "^29.0.0",
+        "jest": "^29.0.0",
+        "typescript": ">=4.3 <6"
+      },
+      "peerDependenciesMeta": {
+        "@babel/core": {
+          "optional": true
+        },
+        "@jest/transform": {
+          "optional": true
+        },
+        "@jest/types": {
+          "optional": true
+        },
+        "babel-jest": {
+          "optional": true
+        },
+        "esbuild": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/ts-node": {
+      "version": "10.9.2",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-10.9.2.tgz",
+      "integrity": "sha512-f0FFpIdcHgn8zcPSbf1dRevwt047YMnaiJM3u2w2RewrB+fob/zePZcrOyQoLMMO7aBIddLcQIEK5dYjkLnGrQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@cspotcode/source-map-support": "^0.8.0",
+        "@tsconfig/node10": "^1.0.7",
+        "@tsconfig/node12": "^1.0.7",
+        "@tsconfig/node14": "^1.0.0",
+        "@tsconfig/node16": "^1.0.2",
+        "acorn": "^8.4.1",
+        "acorn-walk": "^8.1.1",
+        "arg": "^4.1.0",
+        "create-require": "^1.1.0",
+        "diff": "^4.0.1",
+        "make-error": "^1.1.1",
+        "v8-compile-cache-lib": "^3.0.1",
+        "yn": "3.1.1"
+      },
+      "bin": {
+        "ts-node": "dist/bin.js",
+        "ts-node-cwd": "dist/bin-cwd.js",
+        "ts-node-esm": "dist/bin-esm.js",
+        "ts-node-script": "dist/bin-script.js",
+        "ts-node-transpile-only": "dist/bin-transpile.js",
+        "ts-script": "dist/bin-script-deprecated.js"
+      },
+      "peerDependencies": {
+        "@swc/core": ">=1.2.50",
+        "@swc/wasm": ">=1.2.50",
+        "@types/node": "*",
+        "typescript": ">=2.7"
+      },
+      "peerDependenciesMeta": {
+        "@swc/core": {
+          "optional": true
+        },
+        "@swc/wasm": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -5184,6 +5483,13 @@
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
       "dev": true
     },
+    "node_modules/v8-compile-cache-lib": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz",
+      "integrity": "sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/v8-to-istanbul": {
       "version": "9.3.0",
       "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz",
@@ -5343,6 +5649,16 @@
         "node": ">=12"
       }
     },
+    "node_modules/yn": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
diff --git a/package.json b/package.json
index a9b62b4..b97f0f5 100644
--- a/package.json
+++ b/package.json
@@ -33,14 +33,18 @@
     "coveralls": "cat ./coverage/lcov.info | coveralls"
   },
   "devDependencies": {
+    "@trunkio/launcher": "^1.3.2",
     "@types/google-protobuf": "^3.15.12",
+    "@types/jest": "^29.5.14",
     "@types/node": "^22.10.5",
-    "@trunkio/launcher": "^1.3.2",
     "eslint": "^9.18.0",
-    "typescript-eslint": "^8.20.0",
+    "@eslint/js": "^9.18.0",
     "grpc-tools": "^1.12.4",
     "jest": "^29.7.0",
-    "typescript": "^5.7.2"
+    "ts-jest": "^29.2.5",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.7.2",
+    "typescript-eslint": "^8.20.0"
   },
   "dependencies": {
     "@grpc/grpc-js": "^1.12.5",
diff --git a/src/client.ts b/src/client.ts
index 84f1bb8..47e49c8 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -95,7 +95,7 @@ export class DgraphClient {
 }
 
 // isJwtExpired returns true if the error indicates that the jwt has expired.
-export function isJwtExpired(err: unknown): boolean {
+export function isJwtExpired(err: any): boolean {
   if (!err) {
     return false
   }
diff --git a/src/txn.ts b/src/txn.ts
index 9ae048c..aa46d2f 100644
--- a/src/txn.ts
+++ b/src/txn.ts
@@ -76,7 +76,7 @@ export class Txn {
    */
   public async queryWithVars(
     q: string,
-    vars?: { [k: string]: unknown },
+    vars?: { [k: string]: any },
     metadata?: grpc.Metadata,
     options?: grpc.CallOptions,
   ): Promise<types.Response> {
@@ -123,7 +123,7 @@ export class Txn {
    */
   public async queryRDFWithVars(
     q: string,
-    vars?: { [k: string]: unknown },
+    vars?: { [k: string]: any },
     metadata?: grpc.Metadata,
     options?: grpc.CallOptions,
   ): Promise<types.Response> {
diff --git a/src/types.ts b/src/types.ts
index d1564d2..b99c607 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -10,7 +10,7 @@ import { b64ToStr, isBase64, strToB64, strToJson, strToU8, u8ToStr } from "./uti
  * Payload represents the return value of an alter operation.
  */
 export class Payload extends messages.Payload {
-  public getData(): object {
+  public getData(): any {
     let jsonStr: string
     const value = super.getData()
     if (value instanceof Uint8Array) {
@@ -40,7 +40,7 @@ export class Payload extends messages.Payload {
     return value
   }
 
-  public setData(value: unknown): void {
+  public setData(value: any): void {
     if (value instanceof Uint8Array) {
       super.setData(value)
       return
@@ -68,7 +68,7 @@ export function createPayload(oldPayload: messages.Payload): Payload {
  * Response represents the return value of a mutation or query operations.
  */
 export class Response extends messages.Response {
-  public getJson(): unknown {
+  public getJson(): any {
     let jsonStr: string
     const value = super.getJson()
     if (value instanceof Uint8Array) {
@@ -98,7 +98,7 @@ export class Response extends messages.Response {
     return value
   }
 
-  public setJson(value: unknown): void {
+  public setJson(value: any): void {
     if (value instanceof Uint8Array) {
       super.setJson(value)
       return
@@ -126,7 +126,7 @@ export function createResponse(oldResponse: messages.Response): Response {
  * Mutation represents the request value of a muatate operation.
  */
 export class Mutation extends messages.Mutation {
-  public getSetJson(): unknown {
+  public getSetJson(): any {
     let jsonStr: string
     const value = super.getSetJson()
     if (value instanceof Uint8Array) {
@@ -156,7 +156,7 @@ export class Mutation extends messages.Mutation {
     return value
   }
 
-  public setSetJson(value: unknown): void {
+  public setSetJson(value: any): void {
     if (value instanceof Uint8Array) {
       super.setSetJson(value)
       return
@@ -170,7 +170,7 @@ export class Mutation extends messages.Mutation {
     super.setSetJson(strToU8(jsonStr))
   }
 
-  public getDeleteJson(): unknown {
+  public getDeleteJson(): any {
     let jsonStr: string
     const value = super.getDeleteJson()
     if (value instanceof Uint8Array) {
@@ -200,7 +200,7 @@ export class Mutation extends messages.Mutation {
     return value
   }
 
-  public setDeleteJson(value: unknown): void {
+  public setDeleteJson(value: any): void {
     if (value instanceof Uint8Array) {
       super.setDeleteJson(value)
       return
diff --git a/src/util.ts b/src/util.ts
index c9164f0..ed4c880 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -1,12 +1,12 @@
 import * as grpc from "@grpc/grpc-js"
 import * as jspb from "google-protobuf"
 
-export function errorCode(err: unknown): { valid: boolean; code: number } {
+export function errorCode(err: any): { valid: boolean; code: number } {
   if (
     err === undefined ||
     typeof err !== "object" ||
     !Object.prototype.hasOwnProperty.call(err, "code") ||
-    typeof (err as { code?: unknown }).code !== "number"
+    typeof (err as { code?: any }).code !== "number"
   ) {
     return {
       valid: false,
@@ -20,30 +20,30 @@ export function errorCode(err: unknown): { valid: boolean; code: number } {
   }
 }
 
-export function isAbortedError(err: unknown): boolean {
+export function isAbortedError(err: any): boolean {
   const ec = errorCode(err)
   return ec.valid && ec.code === grpc.status.ABORTED
 }
 
-export function isConflictError(err: unknown): boolean {
+export function isConflictError(err: any): boolean {
   const ec = errorCode(err)
   return (
     ec.valid && (ec.code === grpc.status.ABORTED || ec.code === grpc.status.FAILED_PRECONDITION)
   )
 }
 
-export function isUnauthenticatedError(err: unknown): boolean {
+export function isUnauthenticatedError(err: any): boolean {
   const ec = errorCode(err)
   return ec.valid && ec.code === grpc.status.UNAUTHENTICATED
 }
 
 export function promisify1<A, T>(
   f: (arg: A, cb: (err?: Error, res?: T) => void) => void,
-  thisContext?: unknown,
+  thisContext?: any,
 ): (arg: A) => Promise<T> {
   return (arg: A) => {
     return new Promise(
-      (resolve: (value?: T | PromiseLike<T>) => void, reject: (reason?: unknown) => void): void => {
+      (resolve: (value?: T | PromiseLike<T>) => void, reject: (reason?: any) => void): void => {
         f.call(thisContext, arg, (err?: Error, result?: T): void =>
           err !== undefined && err !== null ? reject(err) : resolve(result),
         )
@@ -54,11 +54,11 @@ export function promisify1<A, T>(
 
 export function promisify3<A, B, C, T>(
   f: (argA: A, argB: B, argC: C, cb: (err?: Error, res?: T) => void) => void,
-  thisContext?: unknown,
+  thisContext?: any,
 ): (argA: A, argB: B, argC: C) => Promise<T> {
   return (argA: A, argB: B, argC: C) => {
     return new Promise(
-      (resolve: (value?: T | PromiseLike<T>) => void, reject: (reason?: unknown) => void): void => {
+      (resolve: (value?: T | PromiseLike<T>) => void, reject: (reason?: any) => void): void => {
         f.call(thisContext, argA, argB, argC, (err?: Error, result?: T): void =>
           err !== undefined && err !== null ? reject(err) : resolve(result),
         )
@@ -95,7 +95,7 @@ export function u8ToStr(arr: Uint8Array): string {
   return buf.toString()
 }
 
-export function strToJson(jsonStr: string): unknown {
+export function strToJson(jsonStr: string): any {
   try {
     return JSON.parse(jsonStr)
   } catch {