diff --git a/sdks/universal-router-sdk/package.json b/sdks/universal-router-sdk/package.json
index b9370540a..8b7263f7e 100644
--- a/sdks/universal-router-sdk/package.json
+++ b/sdks/universal-router-sdk/package.json
@@ -7,8 +7,9 @@
     "ethereum"
   ],
   "license": "MIT",
-  "main": "dist/index.js",
-  "typings": "dist/index.d.ts",
+  "main": "./dist/cjs/src/index.js",
+  "module": "./dist/esm/src/index.js",
+  "types": "./dist/types/src/index.d.ts",
   "files": [
     "dist"
   ],
@@ -16,7 +17,11 @@
     "node": ">=14"
   },
   "scripts": {
-    "build": "tsdx build",
+    "clean": "rm -rf dist",
+    "build": "yarn clean && yarn build:cjs && yarn build:esm && yarn build:types",
+    "build:cjs": "tsc -p tsconfig.cjs.json",
+    "build:esm": "tsc -p tsconfig.esm.json",
+    "build:types": "tsc -p tsconfig.types.json",
     "docs": "typedoc",
     "forge:fix": "forge fmt",
     "lint": "yarn prettier",
@@ -53,7 +58,6 @@
     "hardhat": "^2.22.15",
     "prettier": "^2.4.1",
     "ts-node": "^10.9.1",
-    "tsdx": "^0.14.1",
     "tslib": "^2.3.0",
     "typedoc": "^0.21.2",
     "typescript": "^4.3.3"
@@ -99,5 +103,13 @@
   },
   "installConfig": {
     "hoistingLimits": "workspaces"
-  }
+  },
+  "exports": {
+    ".": {
+      "types": "./dist/types/src/index.d.ts",
+      "import": "./dist/esm/src/index.js",
+      "require": "./dist/cjs/src/index.js"
+    }
+  },
+  "sideEffects": false
 }
diff --git a/sdks/universal-router-sdk/src/entities/actions/unwrapWETH.ts b/sdks/universal-router-sdk/src/entities/actions/unwrapWETH.ts
index e0a03cbb4..bf3dde2f7 100644
--- a/sdks/universal-router-sdk/src/entities/actions/unwrapWETH.ts
+++ b/sdks/universal-router-sdk/src/entities/actions/unwrapWETH.ts
@@ -7,9 +7,9 @@ import { ROUTER_AS_RECIPIENT, WETH_ADDRESS } from '../../utils/constants'
 
 export class UnwrapWETH implements Command {
   readonly tradeType: RouterActionType = RouterActionType.UnwrapWETH
-  readonly permit2Data: Permit2Permit
   readonly wethAddress: string
   readonly amount: BigNumberish
+  readonly permit2Data?: Permit2Permit
 
   constructor(amount: BigNumberish, chainId: number, permit2?: Permit2Permit) {
     this.wethAddress = WETH_ADDRESS(chainId)
diff --git a/sdks/universal-router-sdk/src/index.ts b/sdks/universal-router-sdk/src/index.ts
index 3144a420f..566671ab9 100644
--- a/sdks/universal-router-sdk/src/index.ts
+++ b/sdks/universal-router-sdk/src/index.ts
@@ -1,15 +1,9 @@
-export { SwapRouter, MigrateV3ToV4Options } from './swapRouter'
+export { SwapRouter } from './swapRouter'
+export type { MigrateV3ToV4Options } from './swapRouter'
 export * from './entities'
 export * from './utils/routerTradeAdapter'
-export {
-  RoutePlanner,
-  CommandType,
-  COMMAND_DEFINITION,
-  CommandDefinition,
-  Parser,
-  Subparser,
-  ParamType,
-} from './utils/routerCommands'
+export { RoutePlanner, CommandType, COMMAND_DEFINITION, Parser, Subparser } from './utils/routerCommands'
+export type { CommandDefinition, ParamType } from './utils/routerCommands'
 export {
   UNIVERSAL_ROUTER_CREATION_BLOCK,
   UNIVERSAL_ROUTER_ADDRESS,
@@ -17,11 +11,5 @@ export {
   WETH_ADDRESS,
   UniversalRouterVersion,
 } from './utils/constants'
-export {
-  CommandParser,
-  GenericCommandParser,
-  UniversalRouterCommand,
-  UniversalRouterCall,
-  Param,
-  CommandsDefinition,
-} from './utils/commandParser'
+export { CommandParser, GenericCommandParser } from './utils/commandParser'
+export type { UniversalRouterCommand, UniversalRouterCall, Param, CommandsDefinition } from './utils/commandParser'
diff --git a/sdks/universal-router-sdk/tsconfig.base.json b/sdks/universal-router-sdk/tsconfig.base.json
new file mode 100644
index 000000000..88aa2dd18
--- /dev/null
+++ b/sdks/universal-router-sdk/tsconfig.base.json
@@ -0,0 +1,18 @@
+{
+  "include": ["src"],
+  "compilerOptions": {
+    "rootDir": ".",
+    "baseUrl": ".",
+    "target": "es6",
+    "module": "esnext",
+    "importHelpers": true,
+    "declaration": true,
+    "sourceMap": true,
+    "strict": true,
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "isolatedModules": true
+  }
+}
diff --git a/sdks/universal-router-sdk/tsconfig.cjs.json b/sdks/universal-router-sdk/tsconfig.cjs.json
new file mode 100644
index 000000000..6dd12e73e
--- /dev/null
+++ b/sdks/universal-router-sdk/tsconfig.cjs.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "commonjs",
+    "outDir": "dist/cjs"
+  }
+}
diff --git a/sdks/universal-router-sdk/tsconfig.esm.json b/sdks/universal-router-sdk/tsconfig.esm.json
new file mode 100644
index 000000000..d714016a5
--- /dev/null
+++ b/sdks/universal-router-sdk/tsconfig.esm.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "module": "esnext",
+    "outDir": "dist/esm"
+  }
+}
diff --git a/sdks/universal-router-sdk/tsconfig.json b/sdks/universal-router-sdk/tsconfig.json
deleted file mode 100644
index 3e5889420..000000000
--- a/sdks/universal-router-sdk/tsconfig.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "es2018",
-    "module": "esnext",
-    "moduleResolution": "node",
-    "strict": true,
-    "esModuleInterop": true,
-    "strictPropertyInitialization": false,
-    "resolveJsonModule": true,
-    "outDir": "dist",
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "lib": ["esnext.string"],
-    "types": ["@types/mocha", "node"]
-  },
-  "include": ["src", "test"]
-}
diff --git a/sdks/universal-router-sdk/tsconfig.types.json b/sdks/universal-router-sdk/tsconfig.types.json
new file mode 100644
index 000000000..71c5d16ed
--- /dev/null
+++ b/sdks/universal-router-sdk/tsconfig.types.json
@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "dist/types"
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index 79df8ce97..1f63328fd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4663,7 +4663,6 @@ __metadata:
     hardhat: ^2.22.15
     prettier: ^2.4.1
     ts-node: ^10.9.1
-    tsdx: ^0.14.1
     tslib: ^2.3.0
     typedoc: ^0.21.2
     typescript: ^4.3.3