diff --git a/.eslintrc.json b/.eslintrc.json
index d324999ce..6153f20bc 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -13,19 +13,23 @@
   ],
   "globals": { "BigInt": true, "console": true, "WebAssembly": true },
   "rules": {
-    "@typescript-eslint/explicit-function-return-type": [
-      "error",
-      { "allowExpressions": true }
-    ],
+    "@typescript-eslint/explicit-function-return-type": "off",
     "@typescript-eslint/explicit-module-boundary-types": "off",
     "eslint-comments/disable-enable-pair": [
       "error",
-      { "allowWholeFile": true }
+      {
+        "allowWholeFile": true
+      }
     ],
     "eslint-comments/no-unused-disable": "error",
     "import/order": [
       "error",
-      { "newlines-between": "always", "alphabetize": { "order": "asc" } }
+      {
+        "newlines-between": "always",
+        "alphabetize": {
+          "order": "asc"
+        }
+      }
     ],
     "no-constant-condition": ["error", { "checkLoops": false }],
     "import/no-extraneous-dependencies": [
@@ -54,6 +58,17 @@
         "@typescript-eslint/no-non-null-assertion": "off",
         "no-console": "off"
       }
+    },
+    {
+      "files": ["*.ts", "*.mts", "*.cts", "*.tsx"],
+      "rules": {
+        "@typescript-eslint/explicit-function-return-type": [
+          "error",
+          {
+            "allowExpressions": true
+          }
+        ]
+      }
     }
   ]
 }
diff --git a/package-lock.json b/package-lock.json
index f1a99c0fd..5b0b243da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,8 @@
         "packages/dns-discovery",
         "packages/message-encryption",
         "packages/create",
-        "packages/tests"
+        "packages/tests",
+        "packages/build-utils"
       ],
       "devDependencies": {
         "@size-limit/preset-big-lib": "^8.2.4",
@@ -7118,6 +7119,10 @@
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
       "dev": true
     },
+    "node_modules/build-utils": {
+      "resolved": "packages/build-utils",
+      "link": true
+    },
     "node_modules/builtin-modules": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.3.0.tgz",
@@ -27970,6 +27975,13 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "packages/build-utils": {
+      "version": "1.0.0",
+      "license": "MIT OR Apache-2.0",
+      "devDependencies": {
+        "prettier": "^2.8.4"
+      }
+    },
     "packages/core": {
       "name": "@waku/core",
       "version": "0.0.10",
@@ -28005,6 +28017,7 @@
         "@types/uuid": "^9.0.0",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
@@ -28084,6 +28097,7 @@
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
         "@waku/interfaces": "*",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
         "eslint-config-prettier": "^8.6.0",
@@ -28158,6 +28172,7 @@
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
         "@waku/interfaces": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
@@ -28202,6 +28217,7 @@
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
         "@waku/interfaces": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
@@ -28285,6 +28301,7 @@
         "@types/mocha": "^10.0.1",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
@@ -28337,6 +28354,7 @@
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
         "@waku/interfaces": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
@@ -28369,6 +28387,7 @@
         "@rollup/plugin-node-resolve": "^15.0.1",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
         "eslint-config-prettier": "^8.6.0",
@@ -28496,6 +28515,7 @@
         "@rollup/plugin-node-resolve": "^15.0.1",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
         "eslint-config-prettier": "^8.6.0",
@@ -32704,6 +32724,7 @@
         "@waku/interfaces": "*",
         "@waku/proto": "*",
         "@waku/utils": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
@@ -32771,6 +32792,7 @@
         "@waku/dns-discovery": "*",
         "@waku/interfaces": "*",
         "@waku/peer-exchange": "*",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
         "eslint-config-prettier": "^8.6.0",
@@ -32827,6 +32849,7 @@
         "@waku/enr": "*",
         "@waku/interfaces": "*",
         "@waku/utils": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
@@ -32866,6 +32889,7 @@
         "@typescript-eslint/parser": "^5.51.0",
         "@waku/interfaces": "*",
         "@waku/utils": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
@@ -32937,6 +32961,7 @@
         "@waku/interfaces": "*",
         "@waku/proto": "*",
         "@waku/utils": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
@@ -32980,6 +33005,7 @@
         "@waku/enr": "*",
         "@waku/interfaces": "*",
         "@waku/proto": "*",
+        "build-utils": "*",
         "chai": "^4.3.7",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
@@ -33008,6 +33034,7 @@
         "@rollup/plugin-node-resolve": "^15.0.1",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "eslint": "^8.35.0",
         "eslint-config-prettier": "^8.6.0",
@@ -33107,6 +33134,7 @@
         "@rollup/plugin-node-resolve": "^15.0.1",
         "@typescript-eslint/eslint-plugin": "^5.53.0",
         "@typescript-eslint/parser": "^5.51.0",
+        "build-utils": "*",
         "cspell": "^6.26.3",
         "debug": "^4.3.4",
         "eslint": "^8.35.0",
@@ -34257,6 +34285,12 @@
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
       "dev": true
     },
+    "build-utils": {
+      "version": "file:packages/build-utils",
+      "requires": {
+        "prettier": "^2.8.4"
+      }
+    },
     "builtin-modules": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.3.0.tgz",
diff --git a/package.json b/package.json
index 96950d9be..c896b9c5f 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,8 @@
     "packages/dns-discovery",
     "packages/message-encryption",
     "packages/create",
-    "packages/tests"
+    "packages/tests",
+    "packages/build-utils"
   ],
   "scripts": {
     "prepare": "husky install",
@@ -20,6 +21,7 @@
     "build:esm": "npm run build:esm --workspaces --if-present",
     "size": "npm run build && size-limit",
     "fix": "npm run fix --workspaces --if-present",
+    "fix:lint": "npm run fix:lint --workspaces --if-present",
     "check": "npm run check --workspaces --if-present",
     "check:ws": "[ $(ls -1 ./packages|wc -l) -eq $(cat package.json | jq '.workspaces | length') ] || exit 1 # check no packages left behind",
     "test": "npm run test --workspaces --if-present",
@@ -41,7 +43,7 @@
     "typedoc-plugin-resolve-crossmodule-references": "^0.3.3"
   },
   "lint-staged": {
-    "*.ts": [
+    "*.{ts,js}": [
       "eslint --fix"
     ],
     "*.{ts,json,js,md,cjs}": [
diff --git a/packages/build-utils/index.js b/packages/build-utils/index.js
new file mode 100644
index 000000000..5ee75e1ab
--- /dev/null
+++ b/packages/build-utils/index.js
@@ -0,0 +1,21 @@
+export function extractExports(packageJson) {
+  const exportsMap = packageJson.default.exports;
+
+  let input = {};
+  for (const exportPath in exportsMap) {
+    const filePath = exportsMap[exportPath].import;
+
+    let entry;
+    if (exportPath === ".") {
+      entry = "index";
+    } else {
+      if (!exportPath.startsWith("./")) {
+        throw `export path should start with \`./\` but starts with ${exportPath}`;
+      }
+      entry = exportPath.substring(2);
+    }
+    input[entry] = filePath;
+  }
+
+  return input;
+}
diff --git a/packages/build-utils/package.json b/packages/build-utils/package.json
new file mode 100644
index 000000000..304f111c7
--- /dev/null
+++ b/packages/build-utils/package.json
@@ -0,0 +1,30 @@
+{
+  "name": "build-utils",
+  "version": "1.0.0",
+  "description": "Build utilities for js-waku",
+  "main": "index.js",
+  "module": "index.js",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "fix": "run-s fix:*",
+    "fix:lint": "eslint . --fix",
+    "fix:prettier": "prettier . --write",
+    "check": "run-s check:*",
+    "check:lint": "eslint .",
+    "check:prettier": "prettier . --list-different"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/waku-org/js-waku.git"
+  },
+  "author": "Waku Team",
+  "license": "MIT OR Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/waku-org/js-waku/issues"
+  },
+  "homepage": "https://github.com/waku-org/js-waku#readme",
+  "devDependencies": {
+    "prettier": "^2.8.4"
+  }
+}
diff --git a/packages/core/package.json b/packages/core/package.json
index f4c3b332e..97bb0583d 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -57,7 +57,7 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "pretest": "run-s pretest:*",
     "pretest:1-init-git-submodules": "[ -f '../../nwaku/build/wakunode2' ] || git submodule update --init --recursive",
     "pretest:2-build-nwaku": "[ -f '../../nwaku/build/wakunode2' ] || run-s nwaku:build",
@@ -65,7 +65,7 @@
     "nwaku:force-build": "(cd ../../nwaku && rm -rf ./build/ ./vendor) && run-s nwaku:build",
     "check": "run-s check:*",
     "check:tsc": "tsc -p tsconfig.dev.json",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src *.js",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "test": "run-s test:*",
@@ -110,6 +110,7 @@
     "@types/uuid": "^9.0.0",
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
+    "build-utils": "*",
     "chai": "^4.3.7",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
diff --git a/packages/core/rollup.config.js b/packages/core/rollup.config.js
index c1f979319..22e75b907 100644
--- a/packages/core/rollup.config.js
+++ b/packages/core/rollup.config.js
@@ -1,15 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-    "lib/predefined_bootstrap_nodes": "dist/lib/predefined_bootstrap_nodes.js",
-    "lib/message/version_0": "dist/lib/message/version_0.js",
-    "lib/message/topic_only_message": "dist/lib/message/topic_only_message.js",
-    "lib/base_protocol": "dist/lib/base_protocol.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/create/package.json b/packages/create/package.json
index 39392d034..17d8f7e27 100644
--- a/packages/create/package.json
+++ b/packages/create/package.json
@@ -37,9 +37,9 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src *.js",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
@@ -79,6 +79,7 @@
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
     "@waku/interfaces": "*",
+    "build-utils": "*",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
     "eslint-config-prettier": "^8.6.0",
diff --git a/packages/create/rollup.config.js b/packages/create/rollup.config.js
index a03dc334f..22e75b907 100644
--- a/packages/create/rollup.config.js
+++ b/packages/create/rollup.config.js
@@ -1,11 +1,14 @@
-import { nodeResolve } from "@rollup/plugin-node-resolve";
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
+import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/dns-discovery/package.json b/packages/dns-discovery/package.json
index c31960221..2f8e33f0d 100644
--- a/packages/dns-discovery/package.json
+++ b/packages/dns-discovery/package.json
@@ -44,7 +44,7 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
     "check:lint": "eslint src --ext .ts",
     "check:prettier": "prettier . --list-different",
@@ -81,6 +81,7 @@
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
     "@waku/interfaces": "*",
+    "build-utils": "*",
     "chai": "^4.3.7",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
diff --git a/packages/dns-discovery/rollup.config.js b/packages/dns-discovery/rollup.config.js
index d22d3d231..22e75b907 100644
--- a/packages/dns-discovery/rollup.config.js
+++ b/packages/dns-discovery/rollup.config.js
@@ -1,11 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/enr/package.json b/packages/enr/package.json
index 3bed9feb0..80aedb2cd 100644
--- a/packages/enr/package.json
+++ b/packages/enr/package.json
@@ -37,7 +37,7 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
     "check:lint": "eslint src --ext .ts",
     "check:prettier": "prettier . --list-different",
@@ -73,6 +73,7 @@
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
     "@waku/interfaces": "*",
+    "build-utils": "*",
     "chai": "^4.3.7",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
diff --git a/packages/enr/rollup.config.js b/packages/enr/rollup.config.js
index d22d3d231..22e75b907 100644
--- a/packages/enr/rollup.config.js
+++ b/packages/enr/rollup.config.js
@@ -1,11 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/interfaces/package.json b/packages/interfaces/package.json
index e7871b3b4..813f47d60 100644
--- a/packages/interfaces/package.json
+++ b/packages/interfaces/package.json
@@ -36,9 +36,9 @@
     "build:esm": "tsc",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src --fix",
     "check": "run-s check:*",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
diff --git a/packages/message-encryption/package.json b/packages/message-encryption/package.json
index 2b28e51b9..be3c5643f 100644
--- a/packages/message-encryption/package.json
+++ b/packages/message-encryption/package.json
@@ -54,9 +54,9 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src *.js",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
@@ -95,6 +95,7 @@
     "@types/mocha": "^10.0.1",
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
+    "build-utils": "*",
     "chai": "^4.3.7",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
diff --git a/packages/message-encryption/rollup.config.js b/packages/message-encryption/rollup.config.js
index f11e6b9c4..22e75b907 100644
--- a/packages/message-encryption/rollup.config.js
+++ b/packages/message-encryption/rollup.config.js
@@ -1,13 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-    ecies: "dist/ecies.js",
-    symmetric: "dist/symmetric.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/peer-exchange/.eslintignore b/packages/peer-exchange/.eslintignore
deleted file mode 100644
index e69de29bb..000000000
diff --git a/packages/peer-exchange/package.json b/packages/peer-exchange/package.json
index c8eb2f472..aa1ddc384 100644
--- a/packages/peer-exchange/package.json
+++ b/packages/peer-exchange/package.json
@@ -37,9 +37,9 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src *.js",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
@@ -71,6 +71,7 @@
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
     "@waku/interfaces": "*",
+    "build-utils": "*",
     "chai": "^4.3.7",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
diff --git a/packages/peer-exchange/rollup.config.js b/packages/peer-exchange/rollup.config.js
index d22d3d231..22e75b907 100644
--- a/packages/peer-exchange/rollup.config.js
+++ b/packages/peer-exchange/rollup.config.js
@@ -1,11 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/peer-exchange/tsconfig.dev.json b/packages/peer-exchange/tsconfig.dev.json
index ffc27ef6b..4f7c34af3 100644
--- a/packages/peer-exchange/tsconfig.dev.json
+++ b/packages/peer-exchange/tsconfig.dev.json
@@ -1,8 +1,3 @@
 {
-  "extends": "./tsconfig",
-  "compilerOptions": {
-    "module": "esnext",
-    "noEmit": true
-  },
-  "exclude": []
+  "extends": "../../tsconfig.dev"
 }
diff --git a/packages/proto/.eslintrc.cjs b/packages/proto/.eslintrc.cjs
deleted file mode 100644
index 324f1f526..000000000
--- a/packages/proto/.eslintrc.cjs
+++ /dev/null
@@ -1,6 +0,0 @@
-module.exports = {
-  parserOptions: {
-    tsconfigRootDir: __dirname,
-    project: "./tsconfig.dev.json",
-  },
-};
diff --git a/packages/proto/package.json b/packages/proto/package.json
index cc1a68993..51b25510f 100644
--- a/packages/proto/package.json
+++ b/packages/proto/package.json
@@ -40,8 +40,7 @@
     "prepublish": "npm run build",
     "reset-hard": "git clean -dfx -e .idea && git reset --hard && npm i && npm run build",
     "fix": "run-s fix:*",
-    "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src/*.ts --fix"
+    "fix:prettier": "prettier . --write"
   },
   "engines": {
     "node": ">=16"
@@ -55,6 +54,7 @@
     "@rollup/plugin-node-resolve": "^15.0.1",
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
+    "build-utils": "*",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
     "eslint-config-prettier": "^8.6.0",
diff --git a/packages/proto/rollup.config.js b/packages/proto/rollup.config.js
index d22d3d231..22e75b907 100644
--- a/packages/proto/rollup.config.js
+++ b/packages/proto/rollup.config.js
@@ -1,11 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",
diff --git a/packages/tests/package.json b/packages/tests/package.json
index 931fa5047..4dec4bdd4 100644
--- a/packages/tests/package.json
+++ b/packages/tests/package.json
@@ -37,7 +37,7 @@
     "build:esm": "tsc",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src tests --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src tests --fix",
     "pretest": "run-s pretest:*",
     "pretest:1-init-git-submodules": "[ -f '../../nwaku/build/wakunode2' ] || git submodule update --init --recursive",
     "pretest:2-build-nwaku": "[ -f '../../nwaku/build/wakunode2' ] || run-s nwaku:build",
@@ -45,7 +45,7 @@
     "nwaku:force-build": "(cd ../../nwaku && rm -rf ./build/ ./vendor) && run-s nwaku:build",
     "check": "run-s check:*",
     "check:prettier": "prettier . --list-different",
-    "check:lint": "eslint src tests --ext .ts",
+    "check:lint": "eslint src tests",
     "check:spelling": "cspell \"{README.md,{tests,src}/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
     "test": "run-s test:*",
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 5fbf9178c..e799b0f21 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -37,9 +37,9 @@
     "build:bundle": "rollup --config rollup.config.js",
     "fix": "run-s fix:*",
     "fix:prettier": "prettier . --write",
-    "fix:lint": "eslint src --ext .ts --ext .cjs --fix",
+    "fix:lint": "eslint src *.js --fix",
     "check": "run-s check:*",
-    "check:lint": "eslint src --ext .ts",
+    "check:lint": "eslint src *.js",
     "check:prettier": "prettier . --list-different",
     "check:spelling": "cspell \"{README.md,src/**/*.ts}\"",
     "check:tsc": "tsc -p tsconfig.dev.json",
@@ -65,6 +65,7 @@
     "@rollup/plugin-node-resolve": "^15.0.1",
     "@typescript-eslint/eslint-plugin": "^5.53.0",
     "@typescript-eslint/parser": "^5.51.0",
+    "build-utils": "*",
     "cspell": "^6.26.3",
     "eslint": "^8.35.0",
     "eslint-config-prettier": "^8.6.0",
diff --git a/packages/utils/rollup.config.js b/packages/utils/rollup.config.js
index d22d3d231..22e75b907 100644
--- a/packages/utils/rollup.config.js
+++ b/packages/utils/rollup.config.js
@@ -1,11 +1,14 @@
 import commonjs from "@rollup/plugin-commonjs";
 import json from "@rollup/plugin-json";
 import { nodeResolve } from "@rollup/plugin-node-resolve";
+import { extractExports } from "build-utils";
+
+import * as packageJson from "./package.json" assert { type: "json" };
+
+const input = extractExports(packageJson);
 
 export default {
-  input: {
-    index: "dist/index.js",
-  },
+  input,
   output: {
     dir: "bundle",
     format: "esm",