diff --git a/packages/baby-jubjub/rollup.config.ts b/packages/baby-jubjub/rollup.config.ts
index 1af20a2..d8d0a7c 100644
--- a/packages/baby-jubjub/rollup.config.ts
+++ b/packages/baby-jubjub/rollup.config.ts
@@ -1,7 +1,9 @@
+import { nodeResolve } from "@rollup/plugin-node-resolve"
+import terser from "@rollup/plugin-terser"
 import typescript from "@rollup/plugin-typescript"
 import fs from "fs"
 import cleanup from "rollup-plugin-cleanup"
-import terser from "@rollup/plugin-terser"
+import nodePolyfills from "rollup-plugin-polyfill-node"
 
 const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
 const banner = `/**
@@ -15,24 +17,45 @@ const banner = `/**
 
 const name = pkg.name.split("/")[1].replace(/[-/]./g, (x: string) => x.toUpperCase()[1])
 
-export default {
-    input: "src/index.ts",
-    output: [
-        { file: pkg.exports["."].require, format: "cjs", banner },
-        { file: pkg.exports["."].default, format: "es", banner },
-        {
-            file: pkg.iife,
-            name,
-            format: "iife",
-            banner
-        },
-        {
-            file: pkg.unpkg,
-            name,
-            format: "iife",
-            plugins: [terser({ output: { preamble: banner } })]
-        }
-    ],
-    external: Object.keys(pkg.dependencies),
-    plugins: [typescript({ tsconfig: "./build.tsconfig.json" }), cleanup({ comments: "jsdoc" })]
-}
+export default [
+    {
+        input: "src/index.ts",
+        output: [
+            { file: pkg.exports["."].require, format: "cjs", banner },
+            { file: pkg.exports["."].default, format: "es", banner }
+        ],
+        external: [
+            ...Object.keys(pkg.dependencies),
+            "@zk-kit/utils/conversions",
+            "@zk-kit/utils/f1-field",
+            "@zk-kit/utils/scalar"
+        ],
+        plugins: [typescript({ tsconfig: "./build.tsconfig.json" }), cleanup({ comments: "jsdoc" })]
+    },
+    {
+        input: "src/index.ts",
+        output: [
+            {
+                file: pkg.iife,
+                name,
+                format: "iife",
+                banner
+            },
+            {
+                file: pkg.unpkg,
+                name,
+                format: "iife",
+                plugins: [terser({ output: { preamble: banner } })]
+            }
+        ],
+        external: [],
+        plugins: [
+            typescript({
+                tsconfig: "./build.tsconfig.json"
+            }),
+            nodeResolve({ preferBuiltins: false, browser: true }),
+            nodePolyfills(),
+            cleanup({ comments: "jsdoc" })
+        ]
+    }
+]
diff --git a/packages/baby-jubjub/src/baby-jubjub.ts b/packages/baby-jubjub/src/baby-jubjub.ts
index 6e36995..7f523d7 100644
--- a/packages/baby-jubjub/src/baby-jubjub.ts
+++ b/packages/baby-jubjub/src/baby-jubjub.ts
@@ -1,4 +1,6 @@
-import { F1Field, leBigIntToBuffer, leBufferToBigInt, scalar } from "@zk-kit/utils"
+import { leBigIntToBuffer, leBufferToBigInt } from "@zk-kit/utils/conversions"
+import F1Field from "@zk-kit/utils/f1-field"
+import * as scalar from "@zk-kit/utils/scalar"
 import * as sqrt from "./sqrt"
 import { Point } from "./types"
 
diff --git a/packages/baby-jubjub/src/sqrt.ts b/packages/baby-jubjub/src/sqrt.ts
index 0ad6bc1..fe4362d 100644
--- a/packages/baby-jubjub/src/sqrt.ts
+++ b/packages/baby-jubjub/src/sqrt.ts
@@ -1,4 +1,4 @@
-import { F1Field } from "@zk-kit/utils"
+import F1Field from "@zk-kit/utils/f1-field"
 
 /**
  * The following is a sqrt function (i.e. tonelliShanks) with some pre-computed
diff --git a/packages/baby-jubjub/src/types/index.ts b/packages/baby-jubjub/src/types/index.ts
index b4ce0aa..4d5a72c 100644
--- a/packages/baby-jubjub/src/types/index.ts
+++ b/packages/baby-jubjub/src/types/index.ts
@@ -1,3 +1,3 @@
-import { BigNumber } from "@zk-kit/utils"
+import type { BigNumber } from "@zk-kit/utils"
 
 export type Point<N = BigNumber> = [N, N]
diff --git a/packages/eddsa-poseidon/package.json b/packages/eddsa-poseidon/package.json
index c60d77e..f713a0c 100644
--- a/packages/eddsa-poseidon/package.json
+++ b/packages/eddsa-poseidon/package.json
@@ -28,8 +28,7 @@
         "url": "https://github.com/privacy-scaling-explorations/zk-kit.git/issues"
     },
     "scripts": {
-        "build": "rimraf dist && rollup -c rollup.config.ts --configPlugin typescript && yarn build:iife",
-        "build:iife": "rollup -c rollup.iife.config.ts --configPlugin typescript",
+        "build": "rimraf dist && rollup -c rollup.config.ts --configPlugin typescript",
         "prepublishOnly": "yarn build"
     },
     "publishConfig": {
diff --git a/packages/eddsa-poseidon/rollup.config.ts b/packages/eddsa-poseidon/rollup.config.ts
index 8ddcd49..0525c38 100644
--- a/packages/eddsa-poseidon/rollup.config.ts
+++ b/packages/eddsa-poseidon/rollup.config.ts
@@ -1,8 +1,10 @@
 import commonjs from "@rollup/plugin-commonjs"
 import { nodeResolve } from "@rollup/plugin-node-resolve"
+import terser from "@rollup/plugin-terser"
+import typescript from "@rollup/plugin-typescript"
 import fs from "fs"
 import cleanup from "rollup-plugin-cleanup"
-import typescript from "@rollup/plugin-typescript"
+import nodePolyfills from "rollup-plugin-polyfill-node"
 
 const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
 const banner = `/**
@@ -14,19 +16,53 @@ const banner = `/**
  * @see [Github]{@link ${pkg.homepage}}
 */`
 
-export default {
-    input: "src/index.ts",
-    output: [
-        { file: pkg.exports["."].require, format: "cjs", banner },
-        { file: pkg.exports["."].default, format: "es", banner }
-    ],
-    external: Object.keys(pkg.dependencies),
-    plugins: [
-        typescript({ tsconfig: "./build.tsconfig.json" }),
-        commonjs(),
-        nodeResolve({
-            preferBuiltins: true
-        }),
-        cleanup({ comments: "jsdoc" })
-    ]
-}
+const name = pkg.name.split("/")[1].replace(/[-/]./g, (x: string) => x.toUpperCase()[1])
+
+export default [
+    {
+        input: "src/index.ts",
+        output: [
+            { file: pkg.exports["."].require, format: "cjs", banner },
+            { file: pkg.exports["."].default, format: "es", banner }
+        ],
+        external: [
+            ...Object.keys(pkg.dependencies),
+            "@zk-kit/utils/conversions",
+            "@zk-kit/utils/f1-field",
+            "@zk-kit/utils/scalar",
+            "@zk-kit/utils/error-handlers",
+            "@zk-kit/utils/type-checks"
+        ],
+        plugins: [
+            typescript({ tsconfig: "./build.tsconfig.json" }),
+            nodeResolve(),
+            commonjs(),
+            cleanup({ comments: "jsdoc" })
+        ]
+    },
+    {
+        input: "src/index.ts",
+        output: [
+            {
+                file: pkg.iife,
+                name,
+                format: "iife",
+                banner
+            },
+            {
+                file: pkg.unpkg,
+                name,
+                format: "iife",
+                plugins: [terser({ output: { preamble: banner } })]
+            }
+        ],
+        external: [],
+        plugins: [
+            typescript({ tsconfig: "./build.tsconfig.json" }),
+            nodeResolve({ preferBuiltins: false, browser: true }),
+            commonjs(),
+            nodePolyfills(),
+            cleanup({ comments: "jsdoc" })
+        ]
+    }
+]
diff --git a/packages/eddsa-poseidon/rollup.iife.config.ts b/packages/eddsa-poseidon/rollup.iife.config.ts
deleted file mode 100644
index a0b7398..0000000
--- a/packages/eddsa-poseidon/rollup.iife.config.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-import commonjs from "@rollup/plugin-commonjs"
-import terser from "@rollup/plugin-terser"
-import typescript from "@rollup/plugin-typescript"
-import fs from "fs"
-import cleanup from "rollup-plugin-cleanup"
-
-const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
-const banner = `/**
- * @module ${pkg.name}
- * @version ${pkg.version}
- * @file ${pkg.description}
- * @copyright Ethereum Foundation ${new Date().getFullYear()}
- * @license ${pkg.license}
- * @see [Github]{@link ${pkg.homepage}}
-*/`
-
-const name = pkg.name.split("/")[1].replace(/[-/]./g, (x: string) => x.toUpperCase()[1])
-
-export default {
-    input: "src/index.ts",
-    output: [
-        {
-            file: pkg.iife,
-            name,
-            format: "iife",
-            banner
-        },
-        {
-            file: pkg.unpkg,
-            name,
-            format: "iife",
-            plugins: [terser({ output: { preamble: banner } })]
-        }
-    ],
-    external: [],
-    plugins: [typescript({ tsconfig: "./build.tsconfig.json" }), commonjs(), cleanup({ comments: "jsdoc" })]
-}
diff --git a/packages/eddsa-poseidon/src/types/index.ts b/packages/eddsa-poseidon/src/types/index.ts
index 1cbbf41..c47da79 100644
--- a/packages/eddsa-poseidon/src/types/index.ts
+++ b/packages/eddsa-poseidon/src/types/index.ts
@@ -1,5 +1,5 @@
-import { Point } from "@zk-kit/baby-jubjub"
-import { BigNumber } from "@zk-kit/utils"
+import type { Point } from "@zk-kit/baby-jubjub"
+import type { BigNumber } from "@zk-kit/utils"
 
 export type Signature<N = BigNumber> = {
     R8: Point<N>
diff --git a/packages/eddsa-poseidon/src/utils.ts b/packages/eddsa-poseidon/src/utils.ts
index f3c6f59..c1f069d 100644
--- a/packages/eddsa-poseidon/src/utils.ts
+++ b/packages/eddsa-poseidon/src/utils.ts
@@ -1,10 +1,11 @@
 import { Point } from "@zk-kit/baby-jubjub"
-import { isBigNumberish, requireTypes, type BigNumberish } from "@zk-kit/utils"
+import type { BigNumberish } from "@zk-kit/utils"
 import { bigNumberishToBigInt, bigNumberishToBuffer, bufferToBigInt } from "@zk-kit/utils/conversions"
-import { isArray, isObject, isStringifiedBigInt } from "@zk-kit/utils/type-checks"
+import { requireTypes } from "@zk-kit/utils/error-handlers"
+import { isArray, isBigNumberish, isObject, isStringifiedBigInt } from "@zk-kit/utils/type-checks"
 import { Buffer } from "buffer"
-import { Signature } from "./types"
 import { Blake512 } from "./blake"
+import { Signature } from "./types"
 
 /**
  * Prunes a buffer to meet the specific requirements for using it as a private key
diff --git a/packages/utils/package.json b/packages/utils/package.json
index f533d3b..97c64f1 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -48,16 +48,6 @@
             "types": "./dist/types/f1-field.d.ts",
             "require": "./dist/lib.commonjs/f1-field.cjs",
             "default": "./dist/lib.esm/f1-field.js"
-        },
-        "./crypto": {
-            "types": "./dist/types/crypto.browser.d.ts",
-            "node": {
-                "types": "./dist/types/crypto.node.d.ts",
-                "require": "./dist/lib.commonjs/crypto.node.cjs",
-                "default": "./dist/lib.esm/crypto.node.js"
-            },
-            "browser": "./dist/lib.esm/crypto.browser.js",
-            "default": "./dist/lib.esm/crypto.browser.js"
         }
     },
     "files": [
@@ -72,9 +62,7 @@
         "url": "https://github.com/privacy-scaling-explorations/zk-kit.git/issues"
     },
     "scripts": {
-        "build": "rimraf dist && yarn build:browser && yarn build:node",
-        "build:browser": "rollup -c rollup.browser.config.ts --configPlugin typescript",
-        "build:node": "rollup -c rollup.node.config.ts --configPlugin typescript",
+        "build": "rimraf dist && rollup -c rollup.config.ts --configPlugin typescript",
         "prepublishOnly": "yarn build"
     },
     "publishConfig": {
@@ -82,13 +70,13 @@
     },
     "devDependencies": {
         "@rollup/plugin-alias": "^5.1.0",
-        "@rollup/plugin-json": "^6.1.0",
         "@rollup/plugin-terser": "^0.4.4",
         "@rollup/plugin-typescript": "^11.1.6",
         "@types/snarkjs": "^0",
         "rimraf": "^5.0.5",
         "rollup": "^4.12.0",
-        "rollup-plugin-cleanup": "^3.2.1"
+        "rollup-plugin-cleanup": "^3.2.1",
+        "rollup-plugin-polyfill-node": "^0.13.0"
     },
     "dependencies": {
         "buffer": "^6.0.3"
diff --git a/packages/utils/rollup.browser.config.ts b/packages/utils/rollup.browser.config.ts
deleted file mode 100644
index 0465501..0000000
--- a/packages/utils/rollup.browser.config.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-import terser from "@rollup/plugin-terser"
-import typescript from "@rollup/plugin-typescript"
-import fs from "fs"
-import cleanup from "rollup-plugin-cleanup"
-import alias from "@rollup/plugin-alias"
-import json from "@rollup/plugin-json"
-
-const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
-const banner = `/**
- * @module ${pkg.name}
- * @version ${pkg.version}
- * @file ${pkg.description}
- * @copyright Ethereum Foundation ${new Date().getFullYear()}
- * @license ${pkg.license}
- * @see [Github]{@link ${pkg.homepage}}
-*/`
-
-const name = pkg.name.substr(1).replace(/[-/]./g, (x: any) => x.toUpperCase()[1])
-
-export default {
-    input: "src/index.ts",
-    output: [
-        {
-            file: pkg.iife,
-            name,
-            format: "iife",
-            banner
-        },
-        {
-            file: pkg.unpkg,
-            name,
-            format: "iife",
-            plugins: [terser({ output: { preamble: banner } })]
-        },
-        {
-            file: pkg.exports["."].browser,
-            format: "es",
-            banner
-        }
-    ],
-    external: Object.keys(pkg.dependencies),
-    plugins: [
-        alias({
-            entries: [{ find: "./crypto.node", replacement: "./crypto.browser" }]
-        }),
-        typescript({
-            tsconfig: "./build.tsconfig.json"
-        }),
-        cleanup({ comments: "jsdoc" }),
-        json()
-    ]
-}
diff --git a/packages/utils/rollup.config.ts b/packages/utils/rollup.config.ts
new file mode 100644
index 0000000..bfee0f2
--- /dev/null
+++ b/packages/utils/rollup.config.ts
@@ -0,0 +1,101 @@
+import alias from "@rollup/plugin-alias"
+import terser from "@rollup/plugin-terser"
+import typescript from "@rollup/plugin-typescript"
+import fs from "fs"
+import cleanup from "rollup-plugin-cleanup"
+import nodePolyfills from "rollup-plugin-polyfill-node"
+
+const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
+const banner = `/**
+ * @module ${pkg.name}
+ * @version ${pkg.version}
+ * @file ${pkg.description}
+ * @copyright Ethereum Foundation ${new Date().getFullYear()}
+ * @license ${pkg.license}
+ * @see [Github]{@link ${pkg.homepage}}
+*/`
+
+const name = pkg.name.substr(1).replace(/[-/]./g, (x: any) => x.toUpperCase()[1])
+
+export default [
+    {
+        input: "src/index.ts",
+        output: [
+            { file: pkg.exports["."].node.require, format: "cjs", banner, exports: "auto" },
+            { file: pkg.exports["."].node.default, format: "es", banner }
+        ],
+        external: [...Object.keys(pkg.dependencies), "crypto"],
+        plugins: [
+            typescript({
+                tsconfig: "./build.tsconfig.json"
+            }),
+            cleanup({ comments: "jsdoc" })
+        ]
+    },
+    {
+        input: "src/index.ts",
+        output: [
+            {
+                file: pkg.exports["."].browser,
+                format: "es",
+                banner
+            }
+        ],
+        external: Object.keys(pkg.dependencies),
+        plugins: [
+            alias({
+                entries: [{ find: "./crypto/crypto.node", replacement: "./crypto/crypto.browser" }]
+            }),
+            typescript({
+                tsconfig: "./build.tsconfig.json"
+            }),
+            cleanup({ comments: "jsdoc" })
+        ]
+    },
+    {
+        input: "src/index.ts",
+        output: [
+            {
+                file: pkg.iife,
+                name,
+                format: "iife",
+                banner
+            },
+            {
+                file: pkg.unpkg,
+                name,
+                format: "iife",
+                plugins: [terser({ output: { preamble: banner } })]
+            }
+        ],
+        external: [],
+        plugins: [
+            alias({
+                entries: [{ find: "./crypto/crypto.node", replacement: "./crypto/crypto.browser" }]
+            }),
+            typescript({
+                tsconfig: "./build.tsconfig.json"
+            }),
+            nodePolyfills(),
+            cleanup({ comments: "jsdoc" })
+        ]
+    },
+    {
+        input: "src/index.ts",
+        output: [
+            {
+                dir: "./dist/lib.commonjs",
+                format: "cjs",
+                banner,
+                preserveModules: true,
+                entryFileNames: "[name].cjs"
+            },
+            { dir: "./dist/lib.esm", format: "es", banner, preserveModules: true }
+        ],
+        external: [...Object.keys(pkg.dependencies), "crypto"],
+        plugins: [
+            typescript({ tsconfig: "./build.tsconfig.json", declaration: false, declarationDir: undefined }),
+            cleanup({ comments: "jsdoc" })
+        ]
+    }
+]
diff --git a/packages/utils/rollup.node.config.ts b/packages/utils/rollup.node.config.ts
deleted file mode 100644
index 1037645..0000000
--- a/packages/utils/rollup.node.config.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-import typescript from "@rollup/plugin-typescript"
-import fs from "fs"
-import cleanup from "rollup-plugin-cleanup"
-
-const pkg = JSON.parse(fs.readFileSync("./package.json", "utf8"))
-const banner = `/**
- * @module ${pkg.name}
- * @version ${pkg.version}
- * @file ${pkg.description}
- * @copyright Ethereum Foundation ${new Date().getFullYear()}
- * @license ${pkg.license}
- * @see [Github]{@link ${pkg.homepage}}
-*/`
-
-export default [
-    {
-        input: "src/index.ts",
-        output: [
-            { file: pkg.exports["."].node.require, format: "cjs", banner, exports: "auto" },
-            { file: pkg.exports["."].node.default, format: "es", banner }
-        ],
-        external: Object.keys(pkg.dependencies),
-        plugins: [
-            typescript({
-                tsconfig: "./build.tsconfig.json"
-            }),
-            cleanup({ comments: "jsdoc" })
-        ]
-    },
-    {
-        input: "src/index.ts",
-        output: [
-            {
-                dir: "./dist/lib.commonjs",
-                format: "cjs",
-                banner,
-                preserveModules: true,
-                entryFileNames: "[name].cjs"
-            },
-            { dir: "./dist/lib.esm", format: "es", banner, preserveModules: true }
-        ],
-        plugins: [
-            typescript({ tsconfig: "./build.tsconfig.json", declaration: false, declarationDir: undefined }),
-            cleanup({ comments: "jsdoc" })
-        ]
-    }
-]
diff --git a/packages/utils/tsconfig.json b/packages/utils/tsconfig.json
index 8c95393..71510a0 100644
--- a/packages/utils/tsconfig.json
+++ b/packages/utils/tsconfig.json
@@ -1,4 +1,4 @@
 {
     "extends": "../../tsconfig.json",
-    "include": ["src", "tests", "rollup.node.config.ts", "rollup.browser.config.ts"]
+    "include": ["src", "tests", "rollup.config.ts"]
 }
diff --git a/yarn.lock b/yarn.lock
index 592312a..16f6c40 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3823,7 +3823,6 @@ __metadata:
   resolution: "@zk-kit/utils@workspace:packages/utils"
   dependencies:
     "@rollup/plugin-alias": "npm:^5.1.0"
-    "@rollup/plugin-json": "npm:^6.1.0"
     "@rollup/plugin-terser": "npm:^0.4.4"
     "@rollup/plugin-typescript": "npm:^11.1.6"
     "@types/snarkjs": "npm:^0"
@@ -3831,6 +3830,7 @@ __metadata:
     rimraf: "npm:^5.0.5"
     rollup: "npm:^4.12.0"
     rollup-plugin-cleanup: "npm:^3.2.1"
+    rollup-plugin-polyfill-node: "npm:^0.13.0"
   languageName: unknown
   linkType: soft