diff --git a/deno.lock b/deno.lock
index 910c8ee4d..e58285b97 100644
--- a/deno.lock
+++ b/deno.lock
@@ -57,7 +57,7 @@
     "npm:@coderspirit/nominal@^4.1.1": "4.1.1_typescript@5.6.3",
     "npm:@dcspark/carp-client@^3.3.0": "3.3.0",
     "npm:@dcspark/cip34-js@3.0.1": "3.0.1",
-    "npm:@deno/vite-plugin@^1.0.4": "1.0.6_vite@7.1.3__picomatch@4.0.3",
+    "npm:@deno/vite-plugin@^1.0.4": "1.0.6_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
     "npm:@docusaurus/core@3.8.1": "3.8.1_@mdx-js+react@3.1.1__@types+react@18.3.1__react@18.3.1_react@18.3.1_react-dom@18.3.1__react@18.3.1_@types+react@18.3.1_webpack@5.104.1__acorn@8.15.0_react-router@5.3.4__react@18.3.1_typescript@5.6.3",
     "npm:@docusaurus/module-type-aliases@3.8.1": "3.8.1_react@18.3.1_react-dom@18.3.1__react@18.3.1",
     "npm:@docusaurus/plugin-client-redirects@3.8.1": "3.8.1_react@18.3.1_react-dom@18.3.1__react@18.3.1_@mdx-js+react@3.1.1__@types+react@18.3.1__react@18.3.1_@types+react@18.3.1_typescript@5.6.3",
@@ -134,13 +134,14 @@
     "npm:@sinclair/typebox@0.34.41": "0.34.41",
     "npm:@subsquid/ss58-codec@^1.2.3": "1.2.3",
     "npm:@txpipe/dolos@0.19.1": "0.19.1",
+    "npm:@types/node@*": "24.2.0",
     "npm:@types/react@18.3.1": "18.3.1",
     "npm:@types/react@19.1.0": "19.1.0",
     "npm:@types/react@19.1.2": "19.1.2",
     "npm:@types/semver@7.7.1": "7.7.1",
     "npm:@utxorpc/sdk@0.8": "0.8.0_@connectrpc+connect@1.4.0__@bufbuild+protobuf@1.10.1",
     "npm:@utxorpc/spec@~0.18.1": "0.18.1",
-    "npm:@vitejs/plugin-react@^4.4.1": "4.7.0_vite@7.1.3__picomatch@4.0.3_@babel+core@7.29.0",
+    "npm:@vitejs/plugin-react@^4.4.1": "4.7.0_vite@7.1.3__picomatch@4.0.3_@babel+core@7.29.0_@types+node@24.2.0",
     "npm:@wagmi/cli@2.3.1": "2.3.1_typescript@5.6.3_zod@3.25.76_esbuild@0.25.12_picomatch@3.0.1",
     "npm:@xhmikosr/bin-wrapper@5": "5.0.1",
     "npm:@xhmikosr/bin-wrapper@^13.2.0": "13.2.0",
@@ -229,13 +230,13 @@
     "npm:viem@2.23.10": "2.23.10_typescript@5.6.3_ws@8.18.1",
     "npm:viem@2.37.3": "2.37.3_typescript@5.6.3_ws@8.18.3__bufferutil@4.1.0__utf-8-validate@5.0.10",
     "npm:viem@^2.21.3": "2.45.2_typescript@5.6.3_ws@8.18.3__bufferutil@4.1.0__utf-8-validate@5.0.10",
-    "npm:vite-plugin-node-stdlib-browser@*": "0.2.1_node-stdlib-browser@1.3.1_vite@7.1.3__picomatch@4.0.3",
-    "npm:vite-plugin-static-copy@^3.1.1": "3.2.0_vite@7.1.3__picomatch@4.0.3",
-    "npm:vite-plugin-top-level-await@^1.6.0": "1.6.0_vite@7.1.3__picomatch@4.0.3",
-    "npm:vite-plugin-wasm@^3.5.0": "3.5.0_vite@7.1.3__picomatch@4.0.3",
-    "npm:vite@*": "7.1.3_picomatch@4.0.3",
-    "npm:vite@7.1.3": "7.1.3_picomatch@4.0.3",
-    "npm:vitest@^3.2.4": "3.2.4_vite@7.1.3__picomatch@4.0.3",
+    "npm:vite-plugin-node-stdlib-browser@*": "0.2.1_node-stdlib-browser@1.3.1_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vite-plugin-static-copy@^3.1.1": "3.2.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vite-plugin-top-level-await@^1.6.0": "1.6.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vite-plugin-wasm@^3.5.0": "3.5.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vite@*": "7.1.3_picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vite@7.1.3": "7.1.3_picomatch@4.0.3_@types+node@24.2.0",
+    "npm:vitest@^3.2.4": "3.2.4_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
     "npm:wagmi@^2.16.9": "2.19.5_@tanstack+react-query@5.90.20__react@18.3.1_react@18.3.1_typescript@5.6.3_viem@2.23.10__typescript@5.6.3__ws@8.18.1_@wagmi+core@2.22.1__typescript@5.6.3__viem@2.23.10___typescript@5.6.3___ws@8.18.1__@types+react@18.3.1__react@18.3.1__use-sync-external-store@1.4.0___react@18.3.1_@types+react@18.3.1_use-sync-external-store@1.4.0__react@18.3.1",
     "npm:wait-on@8.0.3": "8.0.3",
     "npm:web3-utils@^4.3.3": "4.3.3",
@@ -2187,7 +2188,13 @@
     "@deno/vite-plugin@1.0.6_vite@7.1.3__picomatch@4.0.3": {
       "integrity": "sha512-Sh5XqvFuKAwjARTesi0n6xRpEXm1V0UeqKh+SxIrexCofxOaieNDMqXZD02RiZCg0mrJ43V8eCMuVrDfq6mLmg==",
       "dependencies": [
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "@deno/vite-plugin@1.0.6_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-Sh5XqvFuKAwjARTesi0n6xRpEXm1V0UeqKh+SxIrexCofxOaieNDMqXZD02RiZCg0mrJ43V8eCMuVrDfq6mLmg==",
+      "dependencies": [
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "@discoveryjs/json-ext@0.5.7": {
@@ -8091,6 +8098,12 @@
         "undici-types@6.19.8"
       ]
     },
+    "@types/node@24.2.0": {
+      "integrity": "sha512-3xyG3pMCq3oYCNg7/ZP+E1ooTaGB4cG8JWRsqqOYQdbWNY4zbaV0Ennrd7stjiJEFZCaybcIgpTjJWHRfBSIDw==",
+      "dependencies": [
+        "undici-types@7.10.0"
+      ]
+    },
     "@types/object-inspect@1.13.0": {
       "integrity": "sha512-lwGTVESDDV+XsQ1pH4UifpJ1f7OtXzQ6QBOX2Afq2bM/T3oOt8hF6exJMjjIjtEWeAN2YAo25J7HxWh97CCz9w=="
     },
@@ -8308,7 +8321,19 @@
         "@rolldown/pluginutils",
         "@types/babel__core",
         "react-refresh",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "@vitejs/plugin-react@4.7.0_vite@7.1.3__picomatch@4.0.3_@babel+core@7.29.0_@types+node@24.2.0": {
+      "integrity": "sha512-gUu9hwfWvvEDBBmgtAowQCojwZmJ5mcLn3aufeCsitijs3+f2NsrPtlAWIR6OPiqljl96GVCUbLe0HyqIpVaoA==",
+      "dependencies": [
+        "@babel/core",
+        "@babel/plugin-transform-react-jsx-self",
+        "@babel/plugin-transform-react-jsx-source",
+        "@rolldown/pluginutils",
+        "@types/babel__core",
+        "react-refresh",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "@vitest/expect@3.2.4": {
@@ -8327,10 +8352,22 @@
         "@vitest/spy",
         "estree-walker@3.0.3",
         "magic-string",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ],
+      "optionalPeers": [
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "@vitest/mocker@3.2.4_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-46ryTE9RZO/rfDd7pEqFl7etuyzekzEhUbTW3BvmeO/BcCMEgq59BKhek3dXDWgAj4oMK6OZi+vRr1wPW6qjEQ==",
+      "dependencies": [
+        "@vitest/spy",
+        "estree-walker@3.0.3",
+        "magic-string",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ],
       "optionalPeers": [
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "@vitest/pretty-format@3.2.4": {
@@ -18750,7 +18787,8 @@
         "minipass@7.1.2",
         "minizlib@3.1.0",
         "yallist@5.0.0"
-      ]
+      ],
+      "deprecated": true
     },
     "terser-webpack-plugin@5.3.16_webpack@5.104.1__acorn@8.15.0": {
       "integrity": "sha512-h9oBFCWrq78NyWWVcSwZarJkZ01c2AyGrzs1crmHZO3QUg9D61Wu4NPjBy69n7JqylFF5y+CsUZYmYEIZ3mR+Q==",
@@ -19107,6 +19145,9 @@
     "undici-types@6.19.8": {
       "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw=="
     },
+    "undici-types@7.10.0": {
+      "integrity": "sha512-t5Fy/nfn+14LuOc2KNYg75vZqClpAiqscVvMygNnlsHBFpSXdJaYtXMcdNLpl/Qvc3P2cB3s6lOV51nqsFq4ag=="
+    },
     "undici-types@7.21.0": {
       "integrity": "sha512-w9IMgQrz4O0YN1LtB7K5P63vhlIOvC7opSmouCJ+ZywlPAlO9gIkJ+otk6LvGpAs2wg4econaCz3TvQ9xPoyuQ=="
     },
@@ -19558,7 +19599,18 @@
         "debug@4.4.3",
         "es-module-lexer@1.7.0",
         "pathe@2.0.3",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ],
+      "bin": true
+    },
+    "vite-node@3.2.4_@types+node@24.2.0": {
+      "integrity": "sha512-EbKSKh+bh1E1IFxeO0pg1n4dvoOTt0UDiXMd/qn++r98+jPO1xtJilvXldeuQ8giIB5IkpjCgMleHMNEsGH6pg==",
+      "dependencies": [
+        "cac",
+        "debug@4.4.3",
+        "es-module-lexer@1.7.0",
+        "pathe@2.0.3",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ],
       "bin": true
     },
@@ -19567,7 +19619,15 @@
       "dependencies": [
         "@rollup/plugin-inject",
         "node-stdlib-browser",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "vite-plugin-node-stdlib-browser@0.2.1_node-stdlib-browser@1.3.1_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-6u2i613Dkqj5KaTNIrnZvE6y3/awWAp0S5TjucTvGxdhetftB1Mgvblc+nwYzlw6sntPlac8UOC7ttXNh+LZKA==",
+      "dependencies": [
+        "@rollup/plugin-inject",
+        "node-stdlib-browser",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "vite-plugin-static-copy@3.2.0_vite@7.1.3__picomatch@4.0.3": {
@@ -19577,7 +19637,17 @@
         "p-map@7.0.4",
         "picocolors",
         "tinyglobby",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "vite-plugin-static-copy@3.2.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
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+      "dependencies": [
+        "chokidar@3.6.0",
+        "p-map@7.0.4",
+        "picocolors",
+        "tinyglobby",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "vite-plugin-top-level-await@1.6.0_vite@7.1.3__picomatch@4.0.3": {
@@ -19587,13 +19657,29 @@
         "@swc/core",
         "@swc/wasm",
         "uuid@10.0.0",
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "vite-plugin-top-level-await@1.6.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
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+      "dependencies": [
+        "@rollup/plugin-virtual",
+        "@swc/core",
+        "@swc/wasm",
+        "uuid@10.0.0",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "vite-plugin-wasm@3.5.0_vite@7.1.3__picomatch@4.0.3": {
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       "dependencies": [
-        "vite"
+        "vite@7.1.3_picomatch@4.0.3"
+      ]
+    },
+    "vite-plugin-wasm@3.5.0_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-X5VWgCnqiQEGb+omhlBVsvTfxikKtoOgAzQ95+BZ8gQ+VfMHIjSHr0wyvXFQCa0eKQ0fKyaL0kWcEnYqBac4lQ==",
+      "dependencies": [
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0"
       ]
     },
     "vite@7.1.3_picomatch@4.0.3": {
@@ -19611,12 +19697,61 @@
       ],
       "bin": true
     },
+    "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-OOUi5zjkDxYrKhTV3V7iKsoS37VUM7v40+HuwEmcrsf11Cdx9y3DIr2Px6liIcZFwt3XSRpQvFpL3WVy7ApkGw==",
+      "dependencies": [
+        "@types/node@24.2.0",
+        "esbuild@0.25.12",
+        "fdir@6.5.0_picomatch@4.0.3",
+        "picomatch@4.0.3",
+        "postcss",
+        "rollup",
+        "tinyglobby"
+      ],
+      "optionalDependencies": [
+        "fsevents"
+      ],
+      "optionalPeers": [
+        "@types/node@24.2.0"
+      ],
+      "bin": true
+    },
     "vitest@3.2.4_vite@7.1.3__picomatch@4.0.3": {
       "integrity": "sha512-LUCP5ev3GURDysTWiP47wRRUpLKMOfPh+yKTx3kVIEiu5KOMeqzpnYNsKyOoVrULivR8tLcks4+lga33Whn90A==",
       "dependencies": [
         "@types/chai",
         "@vitest/expect",
-        "@vitest/mocker",
+        "@vitest/mocker@3.2.4_vite@7.1.3__picomatch@4.0.3",
+        "@vitest/pretty-format",
+        "@vitest/runner",
+        "@vitest/snapshot",
+        "@vitest/spy",
+        "@vitest/utils",
+        "chai",
+        "debug@4.4.3",
+        "expect-type",
+        "magic-string",
+        "pathe@2.0.3",
+        "picomatch@4.0.3",
+        "std-env",
+        "tinybench",
+        "tinyexec@0.3.2",
+        "tinyglobby",
+        "tinypool",
+        "tinyrainbow",
+        "vite@7.1.3_picomatch@4.0.3",
+        "vite-node@3.2.4",
+        "why-is-node-running"
+      ],
+      "bin": true
+    },
+    "vitest@3.2.4_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0": {
+      "integrity": "sha512-LUCP5ev3GURDysTWiP47wRRUpLKMOfPh+yKTx3kVIEiu5KOMeqzpnYNsKyOoVrULivR8tLcks4+lga33Whn90A==",
+      "dependencies": [
+        "@types/chai",
+        "@types/node@24.2.0",
+        "@vitest/expect",
+        "@vitest/mocker@3.2.4_vite@7.1.3__picomatch@4.0.3_@types+node@24.2.0",
         "@vitest/pretty-format",
         "@vitest/runner",
         "@vitest/snapshot",
@@ -19634,10 +19769,13 @@
         "tinyglobby",
         "tinypool",
         "tinyrainbow",
-        "vite",
-        "vite-node",
+        "vite@7.1.3_picomatch@4.0.3_@types+node@24.2.0",
+        "vite-node@3.2.4_@types+node@24.2.0",
         "why-is-node-running"
       ],
+      "optionalPeers": [
+        "@types/node@24.2.0"
+      ],
       "bin": true
     },
     "vlq@2.0.4": {
@@ -20582,32 +20720,6 @@
           "npm:viem@2.37.3"
         ]
       },
-      "e2e/e2e-offer-files/packages/midnight": {
-        "dependencies": [
-          "jsr:@std/fs@*",
-          "jsr:@std/path@*",
-          "npm:@midnight-ntwrk/compact-js@2.4.0",
-          "npm:@midnight-ntwrk/compact-runtime@0.14.0",
-          "npm:@midnight-ntwrk/ledger-v7@7.0.0",
-          "npm:@midnight-ntwrk/midnight-js-contracts@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-http-client-proof-provider@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-indexer-public-data-provider@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-level-private-state-provider@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-network-id@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-node-zk-config-provider@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-types@3.0.0",
-          "npm:@midnight-ntwrk/midnight-js-utils@3.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-abstractions@1.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-address-format@3.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-dust-wallet@1.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-facade@1.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-hd@3.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-shielded@1.0.0",
-          "npm:@midnight-ntwrk/wallet-sdk-unshielded-wallet@1.0.0",
-          "npm:rxjs@^7.8.2",
-          "npm:ws@*"
-        ]
-      },
       "e2e/e2e-wallets": {
         "dependencies": [
           "jsr:@oak/oak@^17.1.4",
@@ -20802,6 +20914,13 @@
           ]
         }
       },
+      "packages/binaries/compactc": {
+        "packageJson": {
+          "dependencies": [
+            "npm:@xhmikosr/bin-wrapper@5"
+          ]
+        }
+      },
       "packages/binaries/grafana-alloy": {
         "packageJson": {
           "dependencies": [
@@ -21101,6 +21220,7 @@
             "npm:@coderspirit/nominal@^4.1.1",
             "npm:@foxglove/crc@^1.0.1",
             "npm:@metamask/providers@^22.1.0",
+            "npm:@midnight-ntwrk/dapp-connector-api@4.0.0",
             "npm:@perawallet/connect@^1.4.2",
             "npm:@polkadot/extension-dapp@~0.58.10",
             "npm:@polkadot/extension-inject@~0.58.10",
@@ -21124,25 +21244,13 @@
             "npm:mina-signer@^3.0.7",
             "npm:mqtt-pattern@^2.1.0",
             "npm:mqtt@^5.14.0",
+            "npm:semver@^7.7.3",
             "npm:viem@2.37.3",
             "npm:web3-utils@^4.3.3",
             "npm:web3@^4.16.0"
           ]
         }
       },
-      "packages/node-sdk/batcher": {
-        "dependencies": [
-          "jsr:@std/cli@^1.0.24",
-          "npm:@fastify/cors@^11.0.1",
-          "npm:@fastify/swagger-ui@^5.2.3",
-          "npm:@fastify/swagger@^9.5.1",
-          "npm:@sinclair/typebox@0.34.41",
-          "npm:assert-never@^1.4.0",
-          "npm:effection@^3.5.0",
-          "npm:fastify@^5.4.0",
-          "npm:viem@2.37.3"
-        ]
-      },
       "packages/node-sdk/db": {
         "dependencies": [
           "npm:@pgtyped/parser@2.4.2",
diff --git a/e2e/client/batcher/adapter-bitcoin.ts b/e2e/client/batcher/adapter-bitcoin.ts
index 889b1992d..095e9942d 100644
--- a/e2e/client/batcher/adapter-bitcoin.ts
+++ b/e2e/client/batcher/adapter-bitcoin.ts
@@ -4,8 +4,9 @@ import { buildBitcoinSignatureMessage, BitcoinAdapter } from "@effectstream/batc
 import * as bitcoin from "bitcoinjs-lib";
 import * as ecpair from "ecpair";
 import * as tinysecp from "tiny-secp256k1";
+import { getEnv } from "@effectstream/utils/runtime";
 
-const isEnvTrue = (key: string) => ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase());
+const isEnvTrue = (key: string) => ["true", "1", "yes", "y"].includes((getEnv(key) || "").toLowerCase());
 
 const bitcoin_enabled = !isEnvTrue("DISABLE_BITCOIN");
 
diff --git a/e2e/client/batcher/adapter-counter.ts b/e2e/client/batcher/adapter-counter.ts
index 02e39ea3b..680d0dd24 100644
--- a/e2e/client/batcher/adapter-counter.ts
+++ b/e2e/client/batcher/adapter-counter.ts
@@ -10,8 +10,9 @@ const COUNTER_SYNC_PROTOCOL = "parallelEvmRPC_fast";
 const COUNTER_ADDRESS = contractAddressesEvmMain()["chain31337"][
   "CounterModule#Counter"
 ] as `0x${string}`;
+import { getEnv } from "@effectstream/utils/runtime";
 const COUNTER_PRIVATE_KEY =
-  (Deno.env.get("COUNTER_BATCHER_PRIVATE_KEY") ??
+  (getEnv("COUNTER_BATCHER_PRIVATE_KEY") ??
     "0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d") as `0x${string}`;
 
 const counterConfig: EvmContractAdapterConfig = {
diff --git a/e2e/client/batcher/adapter-midnight-balancing.ts b/e2e/client/batcher/adapter-midnight-balancing.ts
index 0ca0e0a6f..1cf34a759 100644
--- a/e2e/client/batcher/adapter-midnight-balancing.ts
+++ b/e2e/client/batcher/adapter-midnight-balancing.ts
@@ -1,5 +1,6 @@
 import { MidnightBalancingAdapter } from "@effectstream/batcher";
 import { dirname, resolve } from "@std/path";
+import { ENV } from "@effectstream/utils/node-env";
 
 const currentDir = dirname(new URL(import.meta.url).pathname);
 
@@ -12,10 +13,9 @@ import { midnightNetworkConfig } from "@effectstream/midnight-contracts/midnight
 
 const DEFAULT_WALLET_SEED = midnightNetworkConfig.walletSeed!;
 
-const isEnvTrue = (key: string) =>
-  ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase());
+// TODO We should disable this adapter if midnight is disabled.
+const midnight_enabled = !ENV.getBoolean("DISABLE_MIDNIGHT");
 
-const midnight_enabled = !isEnvTrue("DISABLE_MIDNIGHT");
 
 
 const midnightNetworkUrls = {
diff --git a/e2e/client/batcher/adapter-midnight.ts b/e2e/client/batcher/adapter-midnight.ts
index b6c3088b0..9d3cfbec5 100644
--- a/e2e/client/batcher/adapter-midnight.ts
+++ b/e2e/client/batcher/adapter-midnight.ts
@@ -3,18 +3,15 @@ import { SimpleToken, witnesses } from "@e2e/midnight-contracts/eip-20";
 import { MidnightAdapter } from "@effectstream/batcher";
 import { midnightNetworkConfig } from "@effectstream/midnight-contracts/midnight-env";
 import { buildWalletFacade } from "@effectstream/midnight-contracts/wallet-info";
-
 import { dirname, resolve } from "@std/path";
+import { ENV } from "@effectstream/utils/node-env";
 
 // Resolve the base directory for midnight contracts
 const currentDir = dirname(new URL(import.meta.url).pathname);
 const midnightContractsDir = resolve(currentDir, "..", "..", "shared", "contracts", "midnight");
 
-
-const isEnvTrue = (key: string) =>
-  ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase());
-
-const midnight_enabled = !isEnvTrue("DISABLE_MIDNIGHT");
+// TODO if midnight disabled we should skip the adapter construction, as it will fail.
+const midnight_enabled = !ENV.getBoolean("DISABLE_MIDNIGHT");
 
 const { contractInfo, contractAddress, zkConfigPath } = readMidnightContract(
   "contract-eip-20",
diff --git a/e2e/client/batcher/config.ts b/e2e/client/batcher/config.ts
index 54806c97b..d58bec809 100644
--- a/e2e/client/batcher/config.ts
+++ b/e2e/client/batcher/config.ts
@@ -3,10 +3,11 @@ import {
   type BatcherConfig,
   type DefaultBatcherInput,
 } from "@effectstream/batcher";
+import { ENV } from "@effectstream/utils/node-env";
 
 // Config values mirroring e2e/client/node/scripts/start.ts
 const batchIntervalMs = 1000;
-const port = Number(Deno.env.get("BATCHER_PORT") ?? "3334");
+const port = ENV.getNumber("BATCHER_PORT", 3334);
 
 // Batcher config matching old behavior
 export const config: BatcherConfig<DefaultBatcherInput> = {
diff --git a/e2e/client/batcher/main.ts b/e2e/client/batcher/main.ts
index 3156306ee..432817889 100644
--- a/e2e/client/batcher/main.ts
+++ b/e2e/client/batcher/main.ts
@@ -1,32 +1,7 @@
 // Cleanup stale LevelDB BEFORE importing adapters (adapters initialize on import)
-import * as path from "@std/path";
+import { ENV } from "@effectstream/utils/node-env";
 
-const isEnvTrue = (key: string) => ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase());
-const midnight_enabled = !isEnvTrue("DISABLE_MIDNIGHT");
-
-// if (midnight_enabled) {
-//   const baseDir = path.dirname(path.fromFileUrl(import.meta.url));
-  
-//   // Clean up all midnight LevelDB directories (including process-specific ones from previous runs)
-//   try {
-//     for await (const entry of Deno.readDir(baseDir)) {
-//       if (entry.isDirectory && entry.name.startsWith("midnight-level-db")) {
-//         const dbPath = path.join(baseDir, entry.name);
-//         try {
-//           await Deno.remove(dbPath, { recursive: true });
-//           console.log(`🧹 Cleaned up stale Midnight LevelDB directory: ${entry.name}`);
-//         } catch (error) {
-//           console.warn(`⚠️ Could not clean up ${entry.name}:`, error);
-//         }
-//       }
-//     }
-//   } catch (error) {
-//     // Ignore if baseDir doesn't exist or can't be read
-//     if (!(error instanceof Deno.errors.NotFound)) {
-//       console.warn("⚠️ Error cleaning up LevelDB directories:", error);
-//     }
-//   }
-// }
+const midnight_enabled = !ENV.getBoolean("DISABLE_MIDNIGHT");
 
 // Now import adapters after cleanup
 import { main, suspend } from "effection";
@@ -45,7 +20,7 @@ import {
 const batcher = createNewBatcher(config, storage);
 const batchIntervalMs = 1000;
 
-const bitcoin_enabled = !isEnvTrue("DISABLE_BITCOIN");
+const bitcoin_enabled = !ENV.getBoolean("DISABLE_BITCOIN");
 
 batcher
   .addBlockchainAdapter("paimal2", effectstreaml2Adapter, { criteriaType: "time", timeWindowMs: batchIntervalMs })
diff --git a/e2e/client/database/sql-to-ts.ts b/e2e/client/database/sql-to-ts.ts
index d972dbe00..75b03a8f1 100644
--- a/e2e/client/database/sql-to-ts.ts
+++ b/e2e/client/database/sql-to-ts.ts
@@ -1,14 +1,15 @@
 import { getConnection } from "@effectstream/db";
 import { standAloneApplyMigrations } from "@effectstream/db-emulator";
 import { migrationTable } from "./src/migration-order.ts";
-import { localhostConfig } from "@e2e/data-types";
+import { config } from "@e2e/data-types/config-localhost";
 import { EvmCounterPrimitive } from "@e2e/node/custom-primitive";
+import { exit } from "@effectstream/utils/runtime";
 
 // This helper applies Effectstream Migrations to the database, so you can use it to generate the pgtyped files.
 const db = await getConnection();
-await standAloneApplyMigrations(db, migrationTable, localhostConfig as any, {
+await standAloneApplyMigrations(db as any, migrationTable, config as any, {
   "EVM:CUSTOM-COUNTER": EvmCounterPrimitive,
 });
 console.log("✅ System & User migrations applied");
 
-Deno.exit(0);
+exit(0);
diff --git a/e2e/client/node/deno.json b/e2e/client/node/deno.json
index 9e333ed75..f4af36362 100644
--- a/e2e/client/node/deno.json
+++ b/e2e/client/node/deno.json
@@ -16,7 +16,7 @@
     "node:start:e2e": "deno run -A --inspect --unstable-raw-imports src/main.ts",
     "node:start:testnet": "deno run -A --inspect --unstable-raw-imports src/main.testnet.ts",
     "clean_binaries": "cd ../../../packages/binaries/midnight-node && npm run clean && cd ../midnight-indexer && npm run clean && cd ../midnight-proof-server && npm run clean",
-    "quickstart": "deno task -f @effectstream/tui clean && EFFECTSTREAM_ENV=quickstart NODE_ENV=development deno run -A --check --unstable-raw-imports scripts/start.quickstart.ts",
+    "quickstart": "deno task -f @effectstream/tui clean && EFFECTSTREAM_ENV=quickstart NODE_ENV=development MIDNIGHT_STORAGE_PASSWORD=yourpasswordmypassword deno run -A --check --unstable-raw-imports scripts/start.quickstart.ts",
     "e2e": "EFFECTSTREAM_ENV=e2e deno run -A --unstable-raw-imports --check scripts/start.e2e.ts",
     "testnet": "EFFECTSTREAM_ENV=testnet deno run -A --unstable-raw-imports --check scripts/start.testnet.ts"
   },
diff --git a/e2e/client/node/e2e-tests/e2e.avail.test.ts b/e2e/client/node/e2e-tests/e2e.avail.test.ts
index c27a736f8..adad13d2f 100644
--- a/e2e/client/node/e2e-tests/e2e.avail.test.ts
+++ b/e2e/client/node/e2e-tests/e2e.avail.test.ts
@@ -13,7 +13,8 @@ const AVAIL_NODE_URL = "ws://localhost:9955/ws";
 const AVAIL_SEED: string = "//Alice";
 const account = Account.new(AVAIL_SEED);
 
-const isEnvTrue = (key: string) => ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase());
+import { getEnv } from "@effectstream/utils/runtime";
+const isEnvTrue = (key: string) => ["true", "1", "yes", "y"].includes((getEnv(key) || "").toLowerCase());
 
 const avail_enabled = !isEnvTrue("DISABLE_AVAIL");
 
diff --git a/e2e/client/node/e2e-tests/e2e.midnight.test.ts b/e2e/client/node/e2e-tests/e2e.midnight.test.ts
index 222175147..3f89f1d81 100644
--- a/e2e/client/node/e2e-tests/e2e.midnight.test.ts
+++ b/e2e/client/node/e2e-tests/e2e.midnight.test.ts
@@ -275,9 +275,11 @@ const configureProviders = (
 /**
  * Get contract address from command line arguments or from a file
  */
+import { args, exit } from "@effectstream/utils/runtime";
+
 const getContractAddress = (): string => {
   // First try to get from command line arguments
-  const contractAddressFromArgs = Deno.args[0];
+  const contractAddressFromArgs = args()[0];
 
   if (contractAddressFromArgs) {
     console.log(
@@ -314,7 +316,7 @@ const getContractAddress = (): string => {
     console.error(
       "Example: deno run --allow-all increment.ts 0x1234567890abcdef1234567890abcdef12345678",
     );
-    Deno.exit(1);
+    exit(1);
   }
 };
 
@@ -446,7 +448,6 @@ async function joinAndIncrementTest(
   } catch (error) {
     console.error("❌ Error during join and increment process:", error);
     console.error("❌ Error:", error instanceof Error ? error.message : error);
-    // Deno.exit(1);
   } finally {
     // Clean up wallet
     if (walletResult) {
diff --git a/e2e/client/node/scripts/midnight-eip20-submit.ts b/e2e/client/node/scripts/midnight-eip20-submit.ts
index c3983fc35..2d4ced5bb 100644
--- a/e2e/client/node/scripts/midnight-eip20-submit.ts
+++ b/e2e/client/node/scripts/midnight-eip20-submit.ts
@@ -1,4 +1,5 @@
 import { setNetworkId } from "@midnight-ntwrk/midnight-js-network-id";
+import { args, getEnv, exit } from "@effectstream/utils/runtime";
 import { findDeployedContract } from "@midnight-ntwrk/midnight-js-contracts";
 import {
   httpClientProofProvider,
@@ -81,10 +82,10 @@ function createWalletProvider(
 }
 
 async function main() {
-  const payloadArg = Deno.args[0];
+  const payloadArg = args()[0];
   const payload = payloadArg ? JSON.parse(payloadArg) : DEFAULT_PAYLOAD;
 
-  const seed = Deno.env.get("MIDNIGHT_WALLET_SEED") ?? GENESIS_SEED;
+  const seed = getEnv("MIDNIGHT_WALLET_SEED") ?? GENESIS_SEED;
 
   const { contractAddress, contractInfo, zkConfigPath } = readMidnightContract(
     "contract-eip-20",
@@ -154,6 +155,6 @@ async function main() {
 if (import.meta.main) {
   main().catch((err) => {
     console.error("Mint submission failed:", err);
-    Deno.exit(1);
+    exit(1);
   });
 }
diff --git a/e2e/client/node/scripts/start.e2e.ts b/e2e/client/node/scripts/start.e2e.ts
index 91f66160c..264780af5 100644
--- a/e2e/client/node/scripts/start.e2e.ts
+++ b/e2e/client/node/scripts/start.e2e.ts
@@ -22,6 +22,7 @@ import { RPCTest } from "../e2e-tests/e2e.rpc.test.ts";
 import { tokenTests } from "../e2e-tests/e2e.tokens.ts";
 import { bitcoinTest, bitcoinBatcherTest } from "../e2e-tests/e2e.bitcoin.test.ts";
 import { getEffectstreamEVMPublicClient } from "@e2e/engine";
+import { getEnv, exit } from "@effectstream/utils/runtime";
 import type { Client, PoolConfig } from "pg";
 import pg from "pg";
 
@@ -328,7 +329,7 @@ export async function getDBConnection(): Promise<Client> {
       
       // Optional pause to allow the user to inspect the DB,
       // check the logs, send more requests, etc.
-      const pauseTime = Deno.env.get("EFFECTSTREAM_E2E_PAUSE_TIME");
+      const pauseTime = getEnv("EFFECTSTREAM_E2E_PAUSE_TIME");
       if (pauseTime) {
         console.log("⏳ Pausing for", pauseTime, "seconds");
         await delay(parseInt(pauseTime, 10) * 1000);
@@ -345,7 +346,7 @@ export async function getDBConnection(): Promise<Client> {
       shutdown();
     } finally {
       if (anyError()) {
-        Deno.exit(1);
+        exit(1);
       }
     }
   }
@@ -353,10 +354,10 @@ export async function getDBConnection(): Promise<Client> {
   test()
   .then(() => {
     console.log("🎉 Test completed");
-    Deno.exit(0);
+    exit(0);
   }).catch((e) => {
     console.log("❌ Test failed");
     console.error(e);
-    Deno.exit(1);
+    exit(1);
   });
   
\ No newline at end of file
diff --git a/e2e/client/node/scripts/start.testnet.ts b/e2e/client/node/scripts/start.testnet.ts
index 1a14ee676..83758856f 100644
--- a/e2e/client/node/scripts/start.testnet.ts
+++ b/e2e/client/node/scripts/start.testnet.ts
@@ -14,15 +14,15 @@ import {
   const disableStderr = logs !== "stdout";
   const external_db_enabled = ENV.getBoolean("EXTERNAL_DB_ENABLED");
 
-  const midnightWalletSeed = Deno.env.get("MIDNIGHT_WALLET_SEED");
+  const midnightWalletSeed = ENV.getString("MIDNIGHT_WALLET_SEED");
   if (!midnightWalletSeed) {
     throw new Error("MIDNIGHT_WALLET_SEED is not set");
   }
 
   const shouldLaunchProofServer = !isExternalProofServerConfigured;
   const shouldInjectProofServerEnv =
-    !Deno.env.get("MIDNIGHT_PROOF_SERVER_URL") &&
-    !Deno.env.get("MIDNIGHT_PROOF_SERVER");
+    !ENV.getString("MIDNIGHT_PROOF_SERVER_URL") &&
+    !ENV.getString("MIDNIGHT_PROOF_SERVER");
   const proofServerEnv = shouldInjectProofServerEnv
     ? { MIDNIGHT_PROOF_SERVER_URL: midnightNetworkConfig.proofServer }
     : undefined;
diff --git a/e2e/e2e-engine/e2e-assert.ts b/e2e/e2e-engine/e2e-assert.ts
index f62e2b5c6..d91ed1bf8 100644
--- a/e2e/e2e-engine/e2e-assert.ts
+++ b/e2e/e2e-engine/e2e-assert.ts
@@ -1,14 +1,10 @@
 import type { Pool } from "pg";
 import { type QueryResult, safeQuery } from "./e2e-db.ts";
+import { ENV } from "@effectstream/utils/node-env";
 
 const delay = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
 
-const getMaxTimeout = (): number => {
-  if (Deno.env.get("E2E_MAX_TIMEOUT")) {
-    return parseInt(Deno.env.get("E2E_MAX_TIMEOUT")!, 10);
-  }
-  return 20000;
-};
+const getMaxTimeout = (): number => ENV.getNumber("E2E_MAX_TIMEOUT", 20000);
 
 const testResults = {
   count: 0,
diff --git a/e2e/e2e-wallets/server/main.ts b/e2e/e2e-wallets/server/main.ts
index 67e0aea92..310343c83 100644
--- a/e2e/e2e-wallets/server/main.ts
+++ b/e2e/e2e-wallets/server/main.ts
@@ -1,14 +1,15 @@
 import { Application } from "@oak/oak/application";
 import { Router } from "@oak/oak/router";
 import routeStaticFilesFrom from "./util/routeStaticFilesFrom.ts";
+import { cwd } from "@effectstream/utils/runtime";
 
 export const app = new Application();
 const router = new Router();
 
 app.use(router.routes());
 app.use(routeStaticFilesFrom([
-  `${Deno.cwd()}/client/dist`,
-  `${Deno.cwd()}/client/public`,
+  `${cwd()}/client/dist`,
+  `${cwd()}/client/public`,
 ]));
 
 // Default Wallets E2E
diff --git a/e2e/e2e-wallets/vite.config.ts b/e2e/e2e-wallets/vite.config.ts
index 2596603b4..3be76fa35 100644
--- a/e2e/e2e-wallets/vite.config.ts
+++ b/e2e/e2e-wallets/vite.config.ts
@@ -28,12 +28,15 @@ const dbEmptyPath = join(dirname(fromFileUrl(import.meta.url)), "effectstream-db
 export default defineConfig({
   define: {
     "process.env.EFFECTSTREAM_ENV": JSON.stringify("local"),
+    Deno: undefined,
+    Bun: undefined,
   },
   sourcemap: true,
   resolve: {
     alias: {
       "@e2e/midnight-contract-eip-20/contract": midnightContractEip20Path + "index.js",
       "@e2e/midnight-contract-counter-basic/contract": midnightContractCounterBasicPath + "index.js",
+      "@effectstream/utils/runtime": utilsPath + "src/runtime.ts",
       "@effectstream/utils": utilsPath + "src/mod.ts",
       "@effectstream/config": configPath + "src/mod.ts",
       "@effectstream/concise": concisePath + "src/mod.ts",
diff --git a/e2e/shared/contracts/avail/deploy.ts b/e2e/shared/contracts/avail/deploy.ts
index 401a72ea0..5f723095e 100644
--- a/e2e/shared/contracts/avail/deploy.ts
+++ b/e2e/shared/contracts/avail/deploy.ts
@@ -1,7 +1,9 @@
 import { Account, Pallets, SDK } from "avail-js-sdk";
+import { getEnv, cwd, spawn } from "@effectstream/utils/runtime";
+import { writeFile } from "node:fs/promises";
 
 const sdk = await SDK.New("ws://localhost:9955/ws");
-const seed: string = Deno.env.get("SEED") ?? "//Alice";
+const seed: string = getEnv("SEED") ?? "//Alice";
 if (!seed) {
   throw new Error("SEED environment variable is not set");
 }
@@ -50,16 +52,18 @@ export async function createApplicationKey() {
 const { appId, txHash } = await createApplicationKey();
 console.log("Transaction Hash: ", txHash.toString());
 const data = JSON.stringify({ appId, txHash, ApplicationKey, genesisHash });
-const fileName = Deno.cwd() + "/avail_app.json";
+const fileName = cwd() + "/avail_app.json";
 console.log("Writing to file: ", fileName);
-await Deno.writeTextFile(fileName, data);
+await writeFile(fileName, data, "utf-8");
 
-const child = new Deno.Command("deno", {
+const child = spawn("deno", {
   args: ["task", "-f", "@e2e/avail-contracts", "avail-light-client:start"],
   env: {
     AVAIL_APP_ID: appId.toString(),
   },
-}).spawn();
+  stdout: "inherit",
+  stderr: "inherit",
+});
 
 console.log("Light Client Started");
 
diff --git a/e2e/shared/contracts/avail/read-app.ts b/e2e/shared/contracts/avail/read-app.ts
index 8e42c2419..c3c04ea91 100644
--- a/e2e/shared/contracts/avail/read-app.ts
+++ b/e2e/shared/contracts/avail/read-app.ts
@@ -1,3 +1,4 @@
+import fs from "node:fs";
 export type AvailApplicationInfo = {
   appId: number;
   txHash: { // The txHash of the apps creation transaction
@@ -15,7 +16,7 @@ export function readAvailApplication(): AvailApplicationInfo {
     const dir = new URL(".", import.meta.url);
     // Construct the full path to avail_app.json
     const appInfoPath = new URL("avail_app.json", dir);
-    const appInfoJson = Deno.readTextFileSync(appInfoPath);
+    const appInfoJson = fs.readFileSync(appInfoPath, "utf-8");
     const appInfo = JSON.parse(appInfoJson) as AvailApplicationInfo;
     cachedAppInfo = appInfo;
     return appInfo;
diff --git a/e2e/shared/contracts/bitcoin/generate-blocks.ts b/e2e/shared/contracts/bitcoin/generate-blocks.ts
index 220191a53..3a057dd92 100644
--- a/e2e/shared/contracts/bitcoin/generate-blocks.ts
+++ b/e2e/shared/contracts/bitcoin/generate-blocks.ts
@@ -2,6 +2,7 @@ import * as bitcoin from 'bitcoinjs-lib';
 import * as ecpair from 'ecpair';
 import * as ecc from 'tiny-secp256k1';
 import { createHash } from "node:crypto";
+import { args, exit } from "@effectstream/utils/runtime";
 
 /**
  * 
@@ -20,7 +21,10 @@ const delay = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
 const ECPair = ecpair.ECPairFactory(ecc);
 const SATS_PER_BTC = 100_000_000;
 
-const DEFAULT_BLOCK_INTERVAL = Deno.args.includes('--block-interval') ? parseInt(Deno.args[Deno.args.indexOf('--block-interval') + 1]) : 5000;
+const argv = args();
+const DEFAULT_BLOCK_INTERVAL = argv.includes('--block-interval')
+  ? parseInt(argv[argv.indexOf('--block-interval') + 1])
+  : 5000;
 const NETWORK = bitcoin.networks.regtest;
 console.log(`Using block interval: ${DEFAULT_BLOCK_INTERVAL}ms`);
 
@@ -88,20 +92,18 @@ const bitcoinRpcCall = async (method: string, params: any[] = [], walletName?: s
 
 let running = true;
 
-// Handle process signals
-if (typeof Deno !== 'undefined') {
-  Deno.addSignalListener('SIGINT', () => {
-    console.log('\nReceived SIGINT, stopping block generation...');
-    running = false;
-    Deno.exit(130);
-  });
+// Handle process signals (Node-style; Deno 2 has node compat for process)
+process.on("SIGINT", () => {
+  console.log('\nReceived SIGINT, stopping block generation...');
+  running = false;
+  exit(130);
+});
 
-  Deno.addSignalListener('SIGTERM', () => {
-    console.log('\nReceived SIGTERM, stopping block generation...');
-    running = false;
-    Deno.exit(143);
-  });
-}
+process.on("SIGTERM", () => {
+  console.log('\nReceived SIGTERM, stopping block generation...');
+  running = false;
+  exit(143);
+});
 
 async function generateTXHex(address: string, amountSats: number, inputUTXO: { txid: string, vout: number }) {
   const keyPair = ECPair.fromWIF(target.privateKey, NETWORK);
@@ -179,8 +181,8 @@ async function main() {
     }
     console.log(`Using mining wallet address: ${address}`);
   } catch (error) {
-    console.error('Failed to get address. Make sure Bitcoin Core is running and accessible.');
-    Deno.exit(1);
+      console.error('Failed to get address. Make sure Bitcoin Core is running and accessible.');
+      exit(1);
   }
 
   // Import batcher address so we can track its funds
@@ -337,6 +339,6 @@ async function main() {
 
 main().catch((error) => {
   console.error('Fatal error:', error);
-  Deno.exit(1);
+  exit(1);
 });
 
diff --git a/e2e/shared/contracts/cardano/fill-template.ts b/e2e/shared/contracts/cardano/fill-template.ts
index 2369f2c44..7333e084e 100644
--- a/e2e/shared/contracts/cardano/fill-template.ts
+++ b/e2e/shared/contracts/cardano/fill-template.ts
@@ -25,7 +25,7 @@ async function fetchAndSaveGenesis(
   const filePath = `${TEMP_DIR}/${type}-genesis.json`;
 
   await fs.mkdir(TEMP_DIR, { recursive: true });
-  await Deno.writeTextFile(filePath, JSON.stringify(json, null, 2));
+  await fs.writeFile(filePath, JSON.stringify(json, null, 2), "utf-8");
 
   return filePath;
 }
@@ -39,7 +39,7 @@ async function updateDolosConfig() {
   );
 
   // Read the template file
-  const templateContent = await Deno.readTextFile(TEMPLATE_FILE);
+  const templateContent = await fs.readFile(TEMPLATE_FILE, "utf-8");
   const config = parseToml(templateContent);
 
   // Update genesis paths
@@ -51,7 +51,7 @@ async function updateDolosConfig() {
   };
 
   // Write updated config back to file
-  await Deno.writeTextFile(FINAL_TOML, stringifyToml(config));
+  await fs.writeFile(FINAL_TOML, stringifyToml(config), "utf-8");
 }
 
 // Execute the update
diff --git a/e2e/shared/contracts/midnight/contract-counter-deploy.ts b/e2e/shared/contracts/midnight/contract-counter-deploy.ts
index 58c893902..d732e7793 100644
--- a/e2e/shared/contracts/midnight/contract-counter-deploy.ts
+++ b/e2e/shared/contracts/midnight/contract-counter-deploy.ts
@@ -5,6 +5,7 @@ import {
   type CounterPrivateState,
   witnesses,
 } from "./contract-counter/src/index.ts";
+import { exit } from "@effectstream/utils/runtime";
 
 const config: DeployConfig = {
   contractName: "contract-counter",
@@ -22,9 +23,9 @@ console.log("Deploying contract with network config:", midnightNetworkConfig);
 deployMidnightContract(config, midnightNetworkConfig)
   .then(() => {
     console.log("Deployment successful");
-    Deno.exit(0);
+    exit(0);
   })
   .catch((e) => {
     console.error("Unhandled error:", e);
-    Deno.exit(1);
+    exit(1);
   });
diff --git a/e2e/shared/contracts/midnight/contract-counter-interact.ts b/e2e/shared/contracts/midnight/contract-counter-interact.ts
index 520a37405..0067ebdd2 100644
--- a/e2e/shared/contracts/midnight/contract-counter-interact.ts
+++ b/e2e/shared/contracts/midnight/contract-counter-interact.ts
@@ -49,6 +49,8 @@ import {
 import { dirname, resolve } from "@std/path";
 import { exists } from "@std/fs";
 import { CompiledContract } from '@midnight-ntwrk/compact-js';
+import { getEnv, args, exit } from "@effectstream/utils/runtime";
+import { readFile, readTextFile } from "node:fs/promises";
 
 // @ts-expect-error: It's needed to enable WebSocket usage through apollo
 globalThis.WebSocket = WebSocket;
@@ -253,7 +255,7 @@ const buildWalletAndWaitForFunds = async (
   seed: string,
   filename: string,
 ): Promise<Wallet & Resource> => {
-  const directoryPath = Deno.env.get("SYNC_CACHE");
+  const directoryPath = getEnv("SYNC_CACHE");
   let wallet: Wallet & Resource;
   if (directoryPath !== undefined) {
     const fullPath = `${directoryPath}/${filename}`;
@@ -262,7 +264,7 @@ const buildWalletAndWaitForFunds = async (
         `Attempting to restore state from ${fullPath}`,
       );
       try {
-        const serialized = await Deno.readFile(fullPath);
+        const serialized = await readFile(fullPath);
         wallet = await WalletBuilder.restore(
           indexer,
           indexerWS,
@@ -365,7 +367,7 @@ const configureProviders = async (
  */
 const getContractAddress = async (): Promise<string> => {
   // First try to get from command line arguments
-  const contractAddressFromArgs = Deno.args[0];
+  const contractAddressFromArgs = args()[0];
 
   if (contractAddressFromArgs) {
     console.log(
@@ -380,7 +382,7 @@ const getContractAddress = async (): Promise<string> => {
   try {
     if (await exists(contractAddressFile)) {
       const contractAddressFromFile = JSON.parse(
-        await Deno.readTextFile(contractAddressFile),
+        await readTextFile(contractAddressFile, "utf-8"),
       ).contractAddress;
 
       if (contractAddressFromFile) {
@@ -408,7 +410,7 @@ const getContractAddress = async (): Promise<string> => {
     console.error(
       "Example: deno run --allow-all increment.ts 0x1234567890abcdef1234567890abcdef12345678",
     );
-    Deno.exit(1);
+    exit(1);
   }
 };
 
@@ -484,13 +486,13 @@ async function joinAndIncrement(): Promise<void> {
   } catch (error) {
     console.error("❌ Error during join and increment process:", error);
     console.error("❌ Error:", error instanceof Error ? error.message : error);
-    Deno.exit(1);
+    exit(1);
   } finally {
     // Clean up wallet
     if (wallet) {
       try {
         console.log("🧹 Wallet closed successfully");
-        Deno.exit(0);
+        exit(0);
       } catch (error) {
         console.error("❌ Error closing wallet:", error);
       }
@@ -502,7 +504,7 @@ async function joinAndIncrement(): Promise<void> {
 if (import.meta.main) {
   joinAndIncrement().catch((error) => {
     console.error("❌ Unhandled error:", error);
-    Deno.exit(1);
+    exit(1);
   });
 }
 
diff --git a/e2e/shared/contracts/midnight/contract-counter/convert-js.ts b/e2e/shared/contracts/midnight/contract-counter/convert-js.ts
deleted file mode 100644
index 6382510a5..000000000
--- a/e2e/shared/contracts/midnight/contract-counter/convert-js.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-// Convert js files to ts files.
-//
-// This is a temporal solution for converting the .cjs file to .ts
-// This is a partial conversion and might fail for some cases.
-// The goal is doing the minimal conversion to make it a valid ts file.
-// We expect the compiler to generate the .mjs or .ts eventually.
-export async function convertJS(jsPath: string, tsPath: string) {
-  const jsFile = await Deno.readTextFile(jsPath);
-  const output = jsFile
-    // 1. Remove 'use strict'.
-    .replace(/^["']use strict["'];?/, "")
-    // 2. Replace const r = require('lib') with import * as r from 'lib'.
-    .replace(
-      /(const|let|var) (\w+) = require\(['"](.*)["']\);?/g,
-      "import * as $2 from '$3';",
-    )
-    // replace exports.foo = foo; with export { foo };
-    .replace(/exports\.(\w+) = (\w+);?/g, "export { $1 };");
-
-  await Deno.writeTextFile(tsPath, output);
-  console.log(`Converted ${jsPath} to ${tsPath}`);
-}
-
-if (import.meta.main) {
-  const args = Deno.args;
-  if (args.length !== 2) {
-    console.error(
-      "Usage: deno run -A convert-js.ts <path-to-js-file> <path-to-ts-file>",
-    );
-    Deno.exit(1);
-  }
-  await convertJS(args[0], args[1]);
-}
diff --git a/e2e/shared/contracts/midnight/contract-eip-20-deploy.ts b/e2e/shared/contracts/midnight/contract-eip-20-deploy.ts
index 2bdfb429f..2b8d2c1e3 100644
--- a/e2e/shared/contracts/midnight/contract-eip-20-deploy.ts
+++ b/e2e/shared/contracts/midnight/contract-eip-20-deploy.ts
@@ -4,6 +4,7 @@ import {
   SimpleToken,
   witnesses,
 } from "./contract-eip-20/src/index.original.ts";
+import { exit } from "@effectstream/utils/runtime";
 
 const config: DeployConfig = {
   contractName: "contract-eip-20",
@@ -30,9 +31,9 @@ console.log("Deploying contract with network config:", midnightNetworkConfig);
 deployMidnightContract(config, midnightNetworkConfig)
   .then(() => {
     console.log("Deployment successful");
-    Deno.exit(0);
+    exit(0);
   })
   .catch((e) => {
     console.error("Unhandled error:", e);
-    Deno.exit(1);
+    exit(1);
   });
diff --git a/e2e/shared/contracts/midnight/contract-eip-20-interact.ts b/e2e/shared/contracts/midnight/contract-eip-20-interact.ts
index 8d68610ed..90a271c78 100644
--- a/e2e/shared/contracts/midnight/contract-eip-20-interact.ts
+++ b/e2e/shared/contracts/midnight/contract-eip-20-interact.ts
@@ -47,6 +47,8 @@ import {
 } from "npm:@midnight-ntwrk/midnight-js-network-id";
 import { dirname, resolve } from "@std/path";
 import { exists } from "@std/fs";
+import { getEnv, args, exit } from "@effectstream/utils/runtime";
+import { readFile, readTextFile } from "node:fs/promises";
 
 globalThis.WebSocket = WebSocket;
 
@@ -262,7 +264,7 @@ const buildWalletAndWaitForFunds = async (
   seed: string,
   filename: string,
 ): Promise<Wallet & Resource> => {
-  const directoryPath = Deno.env.get("SYNC_CACHE");
+  const directoryPath = getEnv("SYNC_CACHE");
   let wallet: Wallet & Resource;
   if (directoryPath !== undefined) {
     const fullPath = `${directoryPath}/${filename}`;
@@ -271,7 +273,7 @@ const buildWalletAndWaitForFunds = async (
         `Attempting to restore state from ${fullPath}`,
       );
       try {
-        const serialized = await Deno.readFile(fullPath);
+        const serialized = await readFile(fullPath);
         wallet = await WalletBuilder.restore(
           indexer,
           indexerWS,
@@ -369,7 +371,7 @@ const configureProviders = async (
 
 const getContractAddress = async (): Promise<string> => {
   // First try to get from command line arguments
-  // const contractAddressFromArgs = Deno.args[0];
+  // const contractAddressFromArgs = args()[0];
 
   // if (contractAddressFromArgs) {
   //   console.log(
@@ -384,7 +386,7 @@ const getContractAddress = async (): Promise<string> => {
   try {
     if (await exists(contractAddressFile)) {
       const contractAddressFromFile = JSON.parse(
-        await Deno.readTextFile(contractAddressFile),
+        await readTextFile(contractAddressFile, "utf-8"),
       ).contractAddress;
 
       if (contractAddressFromFile) {
@@ -412,7 +414,7 @@ const getContractAddress = async (): Promise<string> => {
     console.error(
       "Example: deno run --allow-all increment.ts 0x1234567890abcdef1234567890abcdef12345678",
     );
-    Deno.exit(1);
+    exit(1);
   }
 };
 
@@ -477,13 +479,13 @@ async function joinAndMint(account: string, amount: bigint): Promise<void> {
   } catch (error) {
     console.error("❌ Error during join and mint process:", error);
     console.error("❌ Error:", error instanceof Error ? error.message : error);
-    Deno.exit(1);
+    exit(1);
   } finally {
     // Clean up wallet
     if (wallet) {
       try {
         console.log("🧹 Wallet closed successfully");
-        Deno.exit(0);
+        exit(0);
       } catch (error) {
         console.error("❌ Error closing wallet:", error);
       }
@@ -504,7 +506,7 @@ if (import.meta.main) {
   const address = (await Rx.firstValueFrom(wallet.state())).address;
   joinAndMint(address, 20000n).catch((error) => {
     console.error("❌ Unhandled error:", error);
-    Deno.exit(1);
+    exit(1);
   });
 }
 
diff --git a/e2e/shared/contracts/midnight/contract-eip-20/convert-js.ts b/e2e/shared/contracts/midnight/contract-eip-20/convert-js.ts
deleted file mode 100644
index 6382510a5..000000000
--- a/e2e/shared/contracts/midnight/contract-eip-20/convert-js.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-// Convert js files to ts files.
-//
-// This is a temporal solution for converting the .cjs file to .ts
-// This is a partial conversion and might fail for some cases.
-// The goal is doing the minimal conversion to make it a valid ts file.
-// We expect the compiler to generate the .mjs or .ts eventually.
-export async function convertJS(jsPath: string, tsPath: string) {
-  const jsFile = await Deno.readTextFile(jsPath);
-  const output = jsFile
-    // 1. Remove 'use strict'.
-    .replace(/^["']use strict["'];?/, "")
-    // 2. Replace const r = require('lib') with import * as r from 'lib'.
-    .replace(
-      /(const|let|var) (\w+) = require\(['"](.*)["']\);?/g,
-      "import * as $2 from '$3';",
-    )
-    // replace exports.foo = foo; with export { foo };
-    .replace(/exports\.(\w+) = (\w+);?/g, "export { $1 };");
-
-  await Deno.writeTextFile(tsPath, output);
-  console.log(`Converted ${jsPath} to ${tsPath}`);
-}
-
-if (import.meta.main) {
-  const args = Deno.args;
-  if (args.length !== 2) {
-    console.error(
-      "Usage: deno run -A convert-js.ts <path-to-js-file> <path-to-ts-file>",
-    );
-    Deno.exit(1);
-  }
-  await convertJS(args[0], args[1]);
-}
diff --git a/e2e/shared/contracts/midnight/faucet.ts b/e2e/shared/contracts/midnight/faucet.ts
index c29876522..467681f9f 100644
--- a/e2e/shared/contracts/midnight/faucet.ts
+++ b/e2e/shared/contracts/midnight/faucet.ts
@@ -22,6 +22,7 @@ import {
 } from "@midnight-ntwrk/ledger-v7";
 import { NetworkId } from "@midnight-ntwrk/wallet-sdk-abstractions";
 import type { DefaultV1Configuration } from "@midnight-ntwrk/wallet-sdk-shielded/v1";
+import { getEnv, exit } from "@effectstream/utils/runtime";
 
 /**
  * This script transfers 10.0 dust from the default midnight wallet to a given address.
@@ -254,7 +255,7 @@ export function getInitialShieldedState(
  * Resolve sync timeout from env or default.
  */
 export function resolveWalletSyncTimeoutMs(): number {
-  const envValue = Deno.env.get("MIDNIGHT_WALLET_SYNC_TIMEOUT_MS");
+  const envValue = getEnv("MIDNIGHT_WALLET_SYNC_TIMEOUT_MS");
   if (!envValue) return WALLET_SYNC_TIMEOUT_MS;
   const parsed = Number(envValue);
   if (Number.isFinite(parsed) && parsed > 0) return parsed;
@@ -265,7 +266,7 @@ export function resolveWalletSyncTimeoutMs(): number {
 }
 
 const resolveDustFeeBlocksMargin = (): number => {
-  const envValue = Deno.env.get("MIDNIGHT_DUST_FEE_BLOCKS_MARGIN");
+  const envValue = getEnv("MIDNIGHT_DUST_FEE_BLOCKS_MARGIN");
   if (!envValue) return DUST_FEE_BLOCKS_MARGIN;
   const parsed = Number(envValue);
   if (Number.isFinite(parsed) && parsed >= 0) return Math.floor(parsed);
@@ -276,7 +277,7 @@ const resolveDustFeeBlocksMargin = (): number => {
 };
 
 const resolveDustFeeOverhead = (): bigint => {
-  const envValue = Deno.env.get("MIDNIGHT_DUST_FEE_OVERHEAD");
+  const envValue = getEnv("MIDNIGHT_DUST_FEE_OVERHEAD");
   if (!envValue) return DUST_FEE_OVERHEAD;
   try {
     return BigInt(envValue);
@@ -662,16 +663,16 @@ export async function registerNightForDust(
 }
 
 const resolveNetworkUrls = (): Required<Config> => ({
-  indexer: Deno.env.get("MIDNIGHT_INDEXER_URL") || DEFAULT_NETWORK_URLS.indexer,
-  indexerWS: Deno.env.get("MIDNIGHT_INDEXER_WS_URL") ||
+  indexer: getEnv("MIDNIGHT_INDEXER_URL") || DEFAULT_NETWORK_URLS.indexer,
+  indexerWS: getEnv("MIDNIGHT_INDEXER_WS_URL") ||
     DEFAULT_NETWORK_URLS.indexerWS,
-  node: Deno.env.get("MIDNIGHT_NODE_URL") || DEFAULT_NETWORK_URLS.node,
-  proofServer: Deno.env.get("MIDNIGHT_PROOF_SERVER_URL") ||
+  node: getEnv("MIDNIGHT_NODE_URL") || DEFAULT_NETWORK_URLS.node,
+  proofServer: getEnv("MIDNIGHT_PROOF_SERVER_URL") ||
     DEFAULT_NETWORK_URLS.proofServer,
 });
 
 const resolveNetworkId = (): NetworkId.NetworkId => {
-  const networkIdRaw = Deno.env.get("MIDNIGHT_NETWORK_ID") || "undeployed";
+  const networkIdRaw = getEnv("MIDNIGHT_NETWORK_ID") || "undeployed";
   switch (networkIdRaw.toLowerCase()) {
     case "undeployed":
       return NetworkId.NetworkId.Undeployed;
@@ -876,19 +877,19 @@ export const faucet = async (
 };
 
 if (import.meta.main) {
-  const midnightAddress = Deno.env.get("MIDNIGHT_ADDRESS");
+  const midnightAddress = getEnv("MIDNIGHT_ADDRESS");
   if (!midnightAddress) {
     console.error("❌ MIDNIGHT_ADDRESS environment variable is not set");
     console.error(
       "Example: MIDNIGHT_ADDRESS=mn_addr_undeployed1k7dst6qphntqmypwa4mhyltk794wx4lt07kherlc9y6clu5swssxqr9xe4z7txy8rscldhec7nmm47ujccf7syky0wz86jwahhkfd3mvq9wu8qx deno run -A faucet.ts",
     );
-    Deno.exit(1);
+    exit(1);
   }
   try {
     await faucet(midnightAddress);
-    Deno.exit(0);
+    exit(0);
   } catch (error) {
     console.error("❌ Error during faucet process:", error);
-    Deno.exit(1);
+    exit(1);
   }
 }
diff --git a/e2e/shared/data-types/src/config.testnet.ts b/e2e/shared/data-types/src/config.testnet.ts
index ecc49ce6f..cc15b1dc5 100644
--- a/e2e/shared/data-types/src/config.testnet.ts
+++ b/e2e/shared/data-types/src/config.testnet.ts
@@ -14,6 +14,7 @@ import {
   PrimitiveTypeMidnightGeneric,
 } from "@effectstream/sm/builtin";
 import { arbitrumSepolia } from "viem/chains";
+import { getEnv } from "@effectstream/utils/runtime";
 
 import { paimaL2Grammar } from "./grammar.ts";
 
@@ -38,9 +39,7 @@ let midnightTip: number = 1111111;
 // IMPORTANT: For testing purposes. Setting it to true, will
 // use a new tip on each restart, making the db inconsistent.
 const USE_TESTING_TIP = true;
-const arbitrumSepoliaRpc = Deno
-  ? Deno.env.get("ARBITRUM_SEPOLIA_RPC")
-  : undefined;
+const arbitrumSepoliaRpc = getEnv("ARBITRUM_SEPOLIA_RPC");
 
 type ContractAddressBook = Record<string, Record<string, `0x${string}`>>;
 const contractAddressBook = contractAddressesEvmMain() as ContractAddressBook;
diff --git a/e2e/shared/data-types/src/config.ts b/e2e/shared/data-types/src/config.ts
index 627ace515..377b15514 100644
--- a/e2e/shared/data-types/src/config.ts
+++ b/e2e/shared/data-types/src/config.ts
@@ -26,10 +26,17 @@ import {
 } from "@effectstream/sm/builtin";
 import * as SimpleTokenContract from "@e2e/midnight-contract-eip-20/contract";
 import * as CounterContract from "@e2e/midnight-contract-counter-basic/contract";
+import { getEnv } from "@effectstream/utils/runtime";
+
+const isBackendEnvironment = typeof process !== "undefined" && process.env;
+
+const isEnvTrue = (key: string) => {
+  const val = isBackendEnvironment
+    ? getEnv(key)
+    : (import.meta as any).env["VITE_" + key];
+  return ["true", "1", "yes", "y"].includes((val || "").toLowerCase());
+};
 
-const isEnvTrue = (typeof Deno !== 'undefined' && Deno) ? 
-  ((key: string) => ["true", "1", "yes", "y"].includes((Deno.env.get(key) || "").toLowerCase()))
-  : ((key: string) => ["true", "1", "yes", "y"].includes(((import.meta as any).env['VITE_' + key] || "").toLowerCase()));
 
 // TODO: This is a workaround to disable yaci-devkit in linux for testing.
 //       There is a unknown error when launching this process.
diff --git a/packages/batcher/adapters/evm-contract-adapter.test.ts b/packages/batcher/adapters/evm-contract-adapter.test.ts
index 637a09dca..9ada9e22a 100644
--- a/packages/batcher/adapters/evm-contract-adapter.test.ts
+++ b/packages/batcher/adapters/evm-contract-adapter.test.ts
@@ -1,4 +1,5 @@
 import { AddressType } from "@effectstream/utils";
+import { test } from "@effectstream/utils/runtime";
 import { assertEquals } from "jsr:@std/assert";
 import { EvmContractAdapter } from "./evm-contract-adapter.ts";
 import type { HardhatArtifact } from "./evm-contract-adapter.ts";
@@ -49,14 +50,14 @@ function makeInput(payload: unknown): DefaultBatcherInput {
   };
 }
 
-Deno.test("EvmContractAdapter.validateInput accepts known method", async () => {
+test("EvmContractAdapter.validateInput accepts known method", async () => {
   const adapter = new EvmContractAdapter(TEST_CONFIG);
   const input = makeInput({ method: "incrementCounter", args: [] });
   const result = await adapter.validateInput(input);
   assertEquals(result.valid, true);
 });
 
-Deno.test("EvmContractAdapter.validateInput rejects unknown method", async () => {
+test("EvmContractAdapter.validateInput rejects unknown method", async () => {
   const adapter = new EvmContractAdapter(TEST_CONFIG);
   const input = makeInput({ method: "doesNotExist", args: [] });
   const result = await adapter.validateInput(input);
@@ -67,7 +68,7 @@ Deno.test("EvmContractAdapter.validateInput rejects unknown method", async () =>
   );
 });
 
-Deno.test("EvmContractAdapter.validateInput enforces nonpayable value", async () => {
+test("EvmContractAdapter.validateInput enforces nonpayable value", async () => {
   const adapter = new EvmContractAdapter(TEST_CONFIG);
   const input = makeInput({
     method: "incrementCounter",
diff --git a/packages/batcher/batch-data-builder/default-builder-logic.test.ts b/packages/batcher/batch-data-builder/default-builder-logic.test.ts
index a89b51274..71d5ec011 100644
--- a/packages/batcher/batch-data-builder/default-builder-logic.test.ts
+++ b/packages/batcher/batch-data-builder/default-builder-logic.test.ts
@@ -1,4 +1,5 @@
 import { assertEquals, assertThrows } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import { DefaultBatchBuilderLogic } from "./default-builder-logic.ts";
 import { AddressType } from "@effectstream/utils";
 
@@ -10,13 +11,13 @@ const MOCK_INPUT = {
   timestamp: "1234567890",
 };
 
-Deno.test("DefaultBatchBuilderLogic - returns null for empty inputs", () => {
+test("DefaultBatchBuilderLogic - returns null for empty inputs", () => {
   const builder = new DefaultBatchBuilderLogic();
   const result = builder.buildBatchData([], { maxSize: 1000 });
   assertEquals(result, null);
 });
 
-Deno.test("DefaultBatchBuilderLogic - builds batch with single input", () => {
+test("DefaultBatchBuilderLogic - builds batch with single input", () => {
   const builder = new DefaultBatchBuilderLogic();
   const result = builder.buildBatchData([MOCK_INPUT], { maxSize: 1000 });
   
@@ -35,7 +36,7 @@ Deno.test("DefaultBatchBuilderLogic - builds batch with single input", () => {
   assertEquals(inner[4], MOCK_INPUT.timestamp);
 });
 
-Deno.test("DefaultBatchBuilderLogic - respects maxSize", () => {
+test("DefaultBatchBuilderLogic - respects maxSize", () => {
   const builder = new DefaultBatchBuilderLogic();
   // Provide a very small max size that shouldn't fit even one input
   const result = builder.buildBatchData([MOCK_INPUT], { maxSize: 10 });
@@ -45,7 +46,7 @@ Deno.test("DefaultBatchBuilderLogic - respects maxSize", () => {
   assertEquals(result, null);
 });
 
-Deno.test("DefaultBatchBuilderLogic - batches multiple inputs if they fit", () => {
+test("DefaultBatchBuilderLogic - batches multiple inputs if they fit", () => {
     const builder = new DefaultBatchBuilderLogic();
     const result = builder.buildBatchData([MOCK_INPUT, MOCK_INPUT], { maxSize: 1000 });
     
diff --git a/packages/batcher/batch-data-builder/evm-builder-logic.test.ts b/packages/batcher/batch-data-builder/evm-builder-logic.test.ts
index 3d0dc7bb8..03d7e69ae 100644
--- a/packages/batcher/batch-data-builder/evm-builder-logic.test.ts
+++ b/packages/batcher/batch-data-builder/evm-builder-logic.test.ts
@@ -1,4 +1,5 @@
 import { AddressType } from "@effectstream/utils";
+import { test } from "@effectstream/utils/runtime";
 import { assertEquals } from "jsr:@std/assert";
 import { EvmBatchBuilderLogic } from "./evm-builder-logic.ts";
 
@@ -16,13 +17,13 @@ function makeInput(overrides: Partial<Record<string, unknown>> = {}) {
   };
 }
 
-Deno.test("EvmBatchBuilderLogic - returns null for empty inputs", () => {
+test("EvmBatchBuilderLogic - returns null for empty inputs", () => {
   const builder = new EvmBatchBuilderLogic();
   const result = builder.buildBatchData([], { maxSize: 1000 });
   assertEquals(result, null);
 });
 
-Deno.test("EvmBatchBuilderLogic - batches valid input", () => {
+test("EvmBatchBuilderLogic - batches valid input", () => {
   const builder = new EvmBatchBuilderLogic();
   const input = makeInput();
   const result = builder.buildBatchData([input], { maxSize: 1000 });
@@ -35,7 +36,7 @@ Deno.test("EvmBatchBuilderLogic - batches valid input", () => {
   assertEquals(result?.data?.payloads[0].address, input.address);
 });
 
-Deno.test("EvmBatchBuilderLogic - skips malformed payloads", () => {
+test("EvmBatchBuilderLogic - skips malformed payloads", () => {
   const builder = new EvmBatchBuilderLogic();
   const badInput = makeInput({ input: "not-json" });
   const goodInput = makeInput({
@@ -49,14 +50,14 @@ Deno.test("EvmBatchBuilderLogic - skips malformed payloads", () => {
   assertEquals(result?.data?.payloads[0].method, "setValue");
 });
 
-Deno.test("EvmBatchBuilderLogic - enforces max size", () => {
+test("EvmBatchBuilderLogic - enforces max size", () => {
   const builder = new EvmBatchBuilderLogic();
   const input = makeInput();
   const result = builder.buildBatchData([input], { maxSize: 10 });
   assertEquals(result, { selectedInputs: [], data: null });
 });
 
-Deno.test("EvmBatchBuilderLogic - supports hex encoded payloads", () => {
+test("EvmBatchBuilderLogic - supports hex encoded payloads", () => {
   const builder = new EvmBatchBuilderLogic();
   const json = JSON.stringify({ method: "hexCall", args: ["0x1"] });
   const hexInput = makeInput({
diff --git a/packages/batcher/core/batcher.ts b/packages/batcher/core/batcher.ts
index 0d8607831..440de0ecb 100644
--- a/packages/batcher/core/batcher.ts
+++ b/packages/batcher/core/batcher.ts
@@ -1346,11 +1346,11 @@ class SignalHandler {
         } catch (error) {
           console.error(`❌ Error during shutdown on ${signal}:`, error);
         } finally {
-          Deno.exit(config.exitCode || 0);
+          process.exit(config.exitCode || 0);
         }
       };
 
-      Deno.addSignalListener(signal as Deno.Signal, listener);
+      process.on(signal, listener);
       this.listeners.push(listener);
     }
   }
diff --git a/packages/batcher/core/config.test.ts b/packages/batcher/core/config.test.ts
index cb9208e6b..7064364c6 100644
--- a/packages/batcher/core/config.test.ts
+++ b/packages/batcher/core/config.test.ts
@@ -1,10 +1,11 @@
 import { assertEquals, assertThrows } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import {
   validateBatchingCriteria,
   type BatchingCriteriaConfig,
 } from "./config.ts";
 
-Deno.test("validateBatchingCriteria - valid time criteria", () => {
+test("validateBatchingCriteria - valid time criteria", () => {
   const criteria: BatchingCriteriaConfig = {
     criteriaType: "time",
     timeWindowMs: 1000,
@@ -12,7 +13,7 @@ Deno.test("validateBatchingCriteria - valid time criteria", () => {
   validateBatchingCriteria(criteria); // Should not throw
 });
 
-Deno.test("validateBatchingCriteria - invalid time criteria", () => {
+test("validateBatchingCriteria - invalid time criteria", () => {
   const criteria: BatchingCriteriaConfig = {
     criteriaType: "time",
   };
@@ -23,7 +24,7 @@ Deno.test("validateBatchingCriteria - invalid time criteria", () => {
   );
 });
 
-Deno.test("validateBatchingCriteria - valid size criteria", () => {
+test("validateBatchingCriteria - valid size criteria", () => {
   const criteria: BatchingCriteriaConfig = {
     criteriaType: "size",
     maxBatchSize: 10,
@@ -31,7 +32,7 @@ Deno.test("validateBatchingCriteria - valid size criteria", () => {
   validateBatchingCriteria(criteria);
 });
 
-Deno.test("validateBatchingCriteria - invalid size criteria", () => {
+test("validateBatchingCriteria - invalid size criteria", () => {
     const criteria: BatchingCriteriaConfig = {
       criteriaType: "size",
     };
@@ -42,7 +43,7 @@ Deno.test("validateBatchingCriteria - invalid size criteria", () => {
     );
 });
 
-Deno.test("validateBatchingCriteria - valid hybrid criteria", () => {
+test("validateBatchingCriteria - valid hybrid criteria", () => {
     const criteria: BatchingCriteriaConfig = {
       criteriaType: "hybrid",
       timeWindowMs: 1000,
@@ -51,7 +52,7 @@ Deno.test("validateBatchingCriteria - valid hybrid criteria", () => {
     validateBatchingCriteria(criteria);
 });
 
-Deno.test("validateBatchingCriteria - invalid hybrid criteria", () => {
+test("validateBatchingCriteria - invalid hybrid criteria", () => {
     const criteria: BatchingCriteriaConfig = {
         criteriaType: "hybrid",
         timeWindowMs: 1000,
diff --git a/packages/batcher/core/storage.ts b/packages/batcher/core/storage.ts
index 96b6b8559..f20633a15 100644
--- a/packages/batcher/core/storage.ts
+++ b/packages/batcher/core/storage.ts
@@ -1,4 +1,7 @@
 import type { DefaultBatcherInput } from "./types.ts";
+import { mkdirSync } from "node:fs";
+import { mkdir, readFile, writeFile, rm } from "node:fs/promises";
+import { isNotFoundError } from "@effectstream/utils/runtime";
 
 /**
  * Interface for batcher storage operations
@@ -54,14 +57,14 @@ export class FileStorage<T extends DefaultBatcherInput = DefaultBatcherInput>
   private readonly dataDirectory: string;
 
   constructor(dataDirectory: string = "./batcher-data") {
-    Deno.mkdirSync(dataDirectory, { recursive: true });
+    mkdirSync(dataDirectory, { recursive: true });
     this.dataDirectory = dataDirectory;
     this.filePath = `${dataDirectory}/pending-inputs.jsonl`;
   }
 
   async init(): Promise<void> {
     try {
-      await Deno.mkdir(this.dataDirectory, { recursive: true });
+      await mkdir(this.dataDirectory, { recursive: true });
     } catch (error) {
       console.error("Error creating data directory:", error);
       throw new Error(`Failed to initialize storage: ${error}`);
@@ -70,11 +73,7 @@ export class FileStorage<T extends DefaultBatcherInput = DefaultBatcherInput>
 
   async addInput(input: T): Promise<void> {
     try {
-      await Deno.writeFile(
-        this.filePath,
-        new TextEncoder().encode(JSON.stringify(input) + "\n"),
-        { append: true },
-      );
+      await writeFile(this.filePath, JSON.stringify(input) + "\n", { flag: "a" });
     } catch (error) {
       console.error("Error adding input to storage:", error);
       throw new Error(`Failed to add input: ${error}`);
@@ -83,13 +82,11 @@ export class FileStorage<T extends DefaultBatcherInput = DefaultBatcherInput>
 
   async getAllInputs(): Promise<T[]> {
     try {
-      const content = new TextDecoder().decode(
-        await Deno.readFile(this.filePath),
-      );
+      const content = await readFile(this.filePath, "utf-8");
       const lines = content.trim().split("\n").filter((line) => line.trim());
       return lines.map((line) => JSON.parse(line));
     } catch (error) {
-      if ((error as any).name === "NotFound") {
+      if (isNotFoundError(error)) {
         // File doesn't exist yet, return empty array
         return [];
       }
@@ -117,11 +114,9 @@ export class FileStorage<T extends DefaultBatcherInput = DefaultBatcherInput>
       // Write the remaining inputs back to the file
       const content = remainingInputs.map((input) => JSON.stringify(input))
         .join("\n");
-      await Deno.writeFile(
+      await writeFile(
         this.filePath,
-        new TextEncoder().encode(
-          content + (remainingInputs.length > 0 ? "\n" : ""),
-        ),
+        content + (remainingInputs.length > 0 ? "\n" : ""),
       );
 
       const removedCount = allInputs.length - remainingInputs.length;
@@ -171,9 +166,9 @@ export class FileStorage<T extends DefaultBatcherInput = DefaultBatcherInput>
 
   async clearAllInputs(): Promise<void> {
     try {
-      await Deno.remove(this.filePath);
+      await rm(this.filePath);
     } catch (error) {
-      if ((error as any).name !== "NotFound") {
+      if (!isNotFoundError(error)) {
         console.error("Error clearing inputs:", error);
         throw new Error(`Failed to clear inputs: ${error}`);
       }
diff --git a/packages/build-tools/explorer/server/main.ts b/packages/build-tools/explorer/server/main.ts
index f67edac05..f6debbc47 100644
--- a/packages/build-tools/explorer/server/main.ts
+++ b/packages/build-tools/explorer/server/main.ts
@@ -8,8 +8,8 @@ const router = new Router();
 
 app.use(router.routes());
 app.use(routeStaticFilesFrom([
-  `${Deno.cwd()}/client/dist`,
-  `${Deno.cwd()}/client/public`,
+  `${process.cwd()}/client/dist`,
+  `${process.cwd()}/client/public`,
 ]));
 
 // If this is the entry point, start the server
diff --git a/packages/build-tools/orchestrator/scripts/launch-avail.ts b/packages/build-tools/orchestrator/scripts/launch-avail.ts
index 34f90e98f..9643511f0 100644
--- a/packages/build-tools/orchestrator/scripts/launch-avail.ts
+++ b/packages/build-tools/orchestrator/scripts/launch-avail.ts
@@ -1,4 +1,5 @@
 import { ComponentNames } from "@effectstream/log";
+import { getEnv } from "@effectstream/utils/runtime";
 
 // Substrate nodes (and many forks like Avail and Midnight) use the Rust tracing/log
 // stack wired through sc-cli/sc-service, which by default writes formatted log output to stderr.
@@ -7,7 +8,9 @@ import { ComponentNames } from "@effectstream/log";
 // unless the user explicitly wants to see the logs, so if EFFECTSTREAM_STDOUT is true,
 // we enable stderr for this as well.
 
-const disableStderr = Deno.env.get("EFFECTSTREAM_STDOUT") === "true" ? false : true;
+const isTrue = (value: string | undefined) => value != null && ["true", "1", "yes", "y"].includes(value.toLowerCase());
+const disableStderr = !isTrue(getEnv("EFFECTSTREAM_STDOUT"));
+
 
 // Start Avail Node and Light Client.
 //
diff --git a/packages/build-tools/orchestrator/scripts/launch-cardano.ts b/packages/build-tools/orchestrator/scripts/launch-cardano.ts
index 5b52ce565..298c81b22 100644
--- a/packages/build-tools/orchestrator/scripts/launch-cardano.ts
+++ b/packages/build-tools/orchestrator/scripts/launch-cardano.ts
@@ -1,4 +1,7 @@
 import { ComponentNames } from "@effectstream/log";
+import { statSync } from "node:fs";
+import { spawnSync } from "node:child_process";
+import { getEnv } from "@effectstream/utils/runtime";
 
 // Start Cardano Node and Indexer.
 //
@@ -28,13 +31,14 @@ export const launchCardano = (packageName: string): {
   cwd?: string;
   command?: string;
 }[] => {
-  const yaciDir = `${Deno.env.get("HOME")}/.yaci-cli`;
+  const home = getEnv("HOME");
+  const yaciDir = `${home}/.yaci-cli`;
   const yaciCliPath = `${yaciDir}/yaci-cli`;
 
   // TODO $HOME/.yaci-cli/yaci-cli must be installed to allow this to work.
   // At the time the npm packages is incompatible with deno.
   try {
-    Deno.statSync(yaciCliPath);
+    statSync(yaciCliPath);
   } catch (_error) {
     throw new Error(
       `Cardano launcher skipped: missing ${yaciCliPath}. Run yaci-cli setup.`,
@@ -43,10 +47,8 @@ export const launchCardano = (packageName: string): {
   // TODO We require the latest dolos binary built from source.
   // At the time there is not npm package for the latest dolos binary.
   try {
-    const dolosExists = new Deno.Command("deno", {
-      args: ["task", "-f", packageName, "dolos:exists"],
-    }).outputSync();
-    if (!dolosExists.success) throw new Error();
+    const dolosExists = spawnSync("deno", ["task", "-f", packageName, "dolos:exists"], { encoding: "utf-8" });
+    if (dolosExists.status !== 0) throw new Error();
   } catch (_error) {
     throw new Error(
       "Cardano launcher skipped: dolos binary is missing.",
diff --git a/packages/build-tools/orchestrator/scripts/launch-midnight.ts b/packages/build-tools/orchestrator/scripts/launch-midnight.ts
index b008ac76d..78bc816ec 100644
--- a/packages/build-tools/orchestrator/scripts/launch-midnight.ts
+++ b/packages/build-tools/orchestrator/scripts/launch-midnight.ts
@@ -1,7 +1,7 @@
 import { ComponentNames } from "@effectstream/log";
+import { getEnv } from "@effectstream/utils/runtime";
 import { ENV } from "@effectstream/utils/node-env";
 
-
 // Substrate nodes (and many forks like Avail and Midnight) use the Rust tracing/log
 // stack wired through sc-cli/sc-service, which by default writes formatted log output to stderr.
 // This is intentional so stdout can remain a clean data channel (e.g., for RPC JSON),
@@ -9,7 +9,8 @@ import { ENV } from "@effectstream/utils/node-env";
 // unless the user explicitly wants to see the logs, so if EFFECTSTREAM_STDOUT is true,
 // we enable stderr for this as well.
 
-const disableStderr = Deno.env.get("EFFECTSTREAM_STDOUT") === "true" ? false : true;
+const isTrue = (value: string | undefined) => value != null && ["true", "1", "yes", "y"].includes(value.toLowerCase());
+const disableStderr = !isTrue(getEnv("EFFECTSTREAM_STDOUT"));
 
 // Start Midnight Node and Indexer.
 //
@@ -125,7 +126,7 @@ export const launchMidnight = (packageName: string): {
         "midnight-contract:deploy",
       ],
       env: {
-        MIDNIGHT_STORAGE_PASSWORD: ENV.MIDNIGHT_STORAGE_PASSWORD,
+        MIDNIGHT_STORAGE_PASSWORD: ENV.MIDNIGHT_STORAGE_PASSWORD
       },
       dependsOn: [
         ComponentNames.MIDNIGHT_NODE_WAIT,
diff --git a/packages/build-tools/orchestrator/src/http-server.ts b/packages/build-tools/orchestrator/src/http-server.ts
index 9bb0c30e3..5c9404909 100644
--- a/packages/build-tools/orchestrator/src/http-server.ts
+++ b/packages/build-tools/orchestrator/src/http-server.ts
@@ -80,5 +80,5 @@ try {
   }
 } catch (err) {
   server.log.error(err);
-  Deno.exit(1);
+  process.exit(1);
 }
diff --git a/packages/build-tools/orchestrator/src/process.ts b/packages/build-tools/orchestrator/src/process.ts
index 51e75c8ee..0b7ff32ae 100644
--- a/packages/build-tools/orchestrator/src/process.ts
+++ b/packages/build-tools/orchestrator/src/process.ts
@@ -2,11 +2,13 @@ import { type LogHandler, streamTo, systemLog } from "./logging.ts";
 import type { Namespace } from "@effectstream/log";
 import { ComponentNames } from "@effectstream/log";
 import type { ValueOf } from "@effectstream/utils";
+import type { SpawnChild } from "@effectstream/utils/runtime";
+import { setExitCode, spawn } from "@effectstream/utils/runtime";
 import { abortControllers } from "./start.ts";
 
 export type ProcessComponent = {
   abortController: AbortController;
-  process: Deno.ChildProcess;
+  process: SpawnChild;
   is_piped: { stderr: boolean; stdout: boolean };
   component: ValueOf<typeof ComponentNames>;
   args: string[];
@@ -26,8 +28,8 @@ export class AbortProcessStart extends Error {
   }
 }
 
-let foregroundProcess: Deno.ChildProcess | null = null;
-export function setForegroundProcess(proc: Deno.ChildProcess) {
+let foregroundProcess: SpawnChild | null = null;
+export function setForegroundProcess(proc: SpawnChild) {
   foregroundProcess = proc;
 }
 
@@ -68,7 +70,7 @@ export async function shutdown(
     "Orchestrator has shut down. Press ^C again to kill background processes that we don't currently kill automatically.",
   );
   if (exitCode) {
-    Deno.exitCode = exitCode;
+    setExitCode(exitCode);
   }
 }
 
@@ -119,7 +121,7 @@ export const terminateProcess = (processIndex: number) => {
 };
 
 /** Send SIGTERM first, then SIGKILL after one second. */
-async function kill(proc: Deno.ChildProcess): Promise<void> {
+async function kill(proc: SpawnChild): Promise<void> {
   try {
     proc.kill("SIGTERM");
     const hardKillTimer = setTimeout(
@@ -152,7 +154,7 @@ export const $ = (params: {
     throw new AbortProcessStart("Shutdown already called");
   }
   const command = params.command ?? "deno";
-  const process = new Deno.Command(command, {
+  const child = spawn(command, {
     args: params.args,
     signal: params.abortController.signal,
     stderr: params.stderr ?? "piped",
@@ -160,11 +162,11 @@ export const $ = (params: {
     stdin: params.stdin ?? "inherit",
     env: { ...params.env, FORCE_COLOR: "true" },
     cwd: params.cwd,
-  }).spawn();
-  process.ref(); // wait until all child processes die before killing parent
+  });
+  child.ref();
 
   const processComponent: ProcessComponent = {
-    process,
+    process: child,
     abortController: params.abortController,
     args: [command, ...params.args],
     alive: true,
@@ -180,7 +182,7 @@ export const $ = (params: {
   processes.push(processComponent);
 
   if (params.log != null) {
-    process.stdout.pipeTo(
+    child.stdout.pipeTo(
       streamTo(
         params.log,
         "stdout",
@@ -188,7 +190,7 @@ export const $ = (params: {
         params.namespace ?? [],
       ),
     );
-    process.stderr.pipeTo(
+    child.stderr.pipeTo(
       streamTo(
         params.log,
         "stderr",
@@ -199,7 +201,7 @@ export const $ = (params: {
   }
 
   // note: don't block on this
-  void process.status.then((status) => {
+  void child.status.then((status) => {
     systemLog(
       `Process ${processComponent.component} (${processComponent.process.pid}) finished.\n`,
     );
@@ -216,9 +218,7 @@ export const $ = (params: {
     if (!status.success) {
       if (!processComponent.critical) {
         systemLog(
-          `Non-critical process ${processComponent.component} (${
-            processComponent.process.pid
-          }) exited with status ${status.signal ?? status.code}; keeping orchestrator alive.`,
+          `Non-critical process ${processComponent.component} (${processComponent.process.pid}) exited with status ${status.signal ?? status.code}; keeping orchestrator alive.`,
         );
         return;
       }
diff --git a/packages/build-tools/orchestrator/src/start.ts b/packages/build-tools/orchestrator/src/start.ts
index 45432ba32..0bee88acc 100644
--- a/packages/build-tools/orchestrator/src/start.ts
+++ b/packages/build-tools/orchestrator/src/start.ts
@@ -13,6 +13,7 @@ import {
   setStderrOutput,
   tsLogOrchestratorAdapter,
 } from "./logging.ts";
+import { spawn, setEnv, getEnv } from "@effectstream/utils/runtime";
 import {
   $,
   AbortProcessStart,
@@ -193,7 +194,7 @@ export async function start(
 ): Promise<void> {
   // This is to redirect all logs.remote to the orchestrator, 
   // where they will be redirected to the collector.
-  Deno.env.set("EFFECTSTREAM_ORCHESTRATOR", "true");
+  setEnv("EFFECTSTREAM_ORCHESTRATOR", "true");
   appConfig = config;
   pFactory = processFactory(config);
   setupLogging(config);
@@ -499,9 +500,7 @@ export const processFactory = (config: OrchestratorConfigType): Record<
     });
     void otlpCollector.process.status;
 
-    await (new Deno.Command("wait-on", {
-      args: [`tcp:${ENV.OTEL_COLLECTOR_PORT}`],
-    })).spawn().status;
+    await spawn("wait-on", { args: [`tcp:${ENV.OTEL_COLLECTOR_PORT}`] }).status;
 
     setCollectorStarted(ENV.OTEL_COLLECTOR_PORT);
     return otlpCollector;
@@ -549,7 +548,7 @@ export const processFactory = (config: OrchestratorConfigType): Record<
     }
 
     // if EFFECTSTREAM_ENV is set, then launch the node:start:{EFFECTSTREAM_ENV}
-    const effectstreamEnv = Deno.env.get("EFFECTSTREAM_ENV");
+    const effectstreamEnv = getEnv("EFFECTSTREAM_ENV");
     const node = $({
       args: ["task", effectstreamEnv ? `node:start:${effectstreamEnv}` : "node:start"],
       log: logHandler({}, tsLogOrchestratorAdapter),
@@ -584,9 +583,7 @@ export const processFactory = (config: OrchestratorConfigType): Record<
     });
     void paimaDb.process.status; // need to await sub-service start below
 
-    await (new Deno.Command("wait-on", {
-      args: [`tcp:${ENV.DB_PORT}`],
-    })).spawn().status;
+    await spawn("wait-on", { args: [`tcp:${ENV.DB_PORT}`] }).status;
 
     return paimaDb;
   },
diff --git a/packages/build-tools/orchestrator/src/tmux/tmux.ts b/packages/build-tools/orchestrator/src/tmux/tmux.ts
index 80d46934f..ad106180b 100644
--- a/packages/build-tools/orchestrator/src/tmux/tmux.ts
+++ b/packages/build-tools/orchestrator/src/tmux/tmux.ts
@@ -27,6 +27,7 @@
 // https://github.com/denoland/deno/issues/29904
 import install_sh from "./install.sh.ts";
 import session_tmux from "./session.tmux.ts";
+import { spawnOutput, type SpawnOutputResult } from "@effectstream/utils/runtime";
 
 export interface TmuxOptions {
   /**
@@ -45,17 +46,11 @@ export interface TmuxOptions {
  */
 export class Tmux {
   static async install() {
-    // Pipe the built-in `install.sh` to `sh` directly.
-    const cmd = new Deno.Command("sh", {
-      stdin: "piped",
+    const output = await spawnOutput("sh", {
+      stdinInput: new TextEncoder().encode(install_sh),
       stdout: "piped",
       stderr: "piped",
     });
-    const child = cmd.spawn();
-    const writer = child.stdin.getWriter();
-    await writer.write(new TextEncoder().encode(install_sh));
-    await writer.close();
-    const output = await child.output();
 
     if (output.stdout.length > 0) {
       console.log(new TextDecoder().decode(output.stdout));
@@ -81,7 +76,7 @@ export class Tmux {
 
   /** Tell the server to start our session. */
   public async startSession() {
-    const cmd = new Deno.Command(this.options.command, {
+    const output = await spawnOutput(this.options.command, {
       args: [
         "-L",
         this.options.socket,
@@ -90,16 +85,11 @@ export class Tmux {
         "source-file",
         "-",
       ],
-      stdin: "piped",
+      stdinInput: new TextEncoder().encode(session_tmux),
       stdout: "piped",
       stderr: "piped",
     });
-
-    const child = cmd.spawn();
-    const writer = child.stdin.getWriter();
-    await writer.write(new TextEncoder().encode(session_tmux));
-    await writer.close();
-    this._checkExit(await child.output());
+    this._checkExit(output);
   }
 
   /** Attach to the session in the foreground and wait for it to be detached. */
@@ -121,17 +111,16 @@ export class Tmux {
 
   /** Kill the server, if it hasn't already exited. */
   public async killServer() {
-    const cmd = new Deno.Command(this.options.command, {
+    await spawnOutput(this.options.command, {
       args: ["-L", this.options.socket, "-N", "kill-server"],
       stdin: "null",
       stdout: "piped",
       stderr: "piped",
     });
     // Ignore exit status. We're okay with failing to kill something that isn't there.
-    await cmd.output();
   }
 
-  private _checkExit(output: Deno.CommandOutput) {
+  private _checkExit(output: SpawnOutputResult) {
     if (!output.success) {
       const errorText = new TextDecoder().decode(output.stderr);
       throw new Error(
diff --git a/packages/build-tools/tui/src/logs-standalone.ts b/packages/build-tools/tui/src/logs-standalone.ts
index 8ffc4507e..a1ebeade3 100755
--- a/packages/build-tools/tui/src/logs-standalone.ts
+++ b/packages/build-tools/tui/src/logs-standalone.ts
@@ -3,6 +3,8 @@ import { LogServer, type OTelLog } from "./logs-server.ts";
 import { createStream, type RotatingFileStream } from "rotating-file-stream";
 import type { ILogObj } from "tslog";
 import { ENV } from "@effectstream/utils/node-env";
+import { getEnv, spawn, exit } from "@effectstream/utils/runtime";
+import { lstatSync, mkdirSync } from "node:fs";
 
 // This is a standalone script that can be used to view logs from the collector.
 // Its purpose is to be used in a tmux session, and not as a part of the TUI.
@@ -14,8 +16,8 @@ class LogsViewer {
 
   constructor() {
     this.logServer = new LogServer();
-    const calledFrom = Deno.env.get("INIT_CWD") ?? ".";
-    const envLogsPath = Deno.env.get("LOGS_PATH");
+    const calledFrom = getEnv("INIT_CWD") ?? process.cwd();
+    const envLogsPath = getEnv("LOGS_PATH");
     this.logDirectory = envLogsPath ?? `${calledFrom}/logs`;
   }
 
@@ -76,9 +78,9 @@ class LogsViewer {
     console.log("🔍 Starting log server...");
 
     try {
-      Deno.lstatSync(this.logDirectory);
+      lstatSync(this.logDirectory);
     } catch (error) {
-      Deno.mkdirSync(this.logDirectory, { recursive: true });
+      mkdirSync(this.logDirectory, { recursive: true });
     }
 
     // Set up displayLogs's destination
@@ -110,17 +112,16 @@ const viewer = new LogsViewer();
 // so that ctrl+c terminates the entire effectstream-engine process`
 const killTmux = () => {
   if (ENV.TMUX) {
-    const cmd = new Deno.Command("tmux", { args: ["kill-session"] });
-    cmd.spawn();
+    spawn("tmux", { args: ["kill-session"], stdout: "inherit", stderr: "inherit" });
   }
 };
 
-// Handle graceful shutdown
-Deno.addSignalListener("SIGINT", () => {
+// Handle graceful shutdown (Node-style; Deno 2 has node compat for process)
+process.on("SIGINT", () => {
   console.log("\n👋 Stopping log viewer...");
   viewer.isRunning = false;
   killTmux();
-  Deno.exit(0);
+  exit(0);
 });
 
 try {
@@ -128,5 +129,5 @@ try {
 } catch (error) {
   console.error(error);
   killTmux();
-  Deno.exit(1);
+  exit(1);
 }
diff --git a/packages/build-tools/tui/src/main.tsx b/packages/build-tools/tui/src/main.tsx
index 122b74b45..c97198821 100644
--- a/packages/build-tools/tui/src/main.tsx
+++ b/packages/build-tools/tui/src/main.tsx
@@ -9,6 +9,8 @@ import {
   SECTION_ORDER,
   SECTIONS,
 } from "./tab/BottomBar.tsx";
+import { spawn, exit } from "@effectstream/utils/runtime";
+import { ENV } from "@effectstream/utils/node-env";
 
 // Main App Component
 const App = () => {
@@ -21,22 +23,23 @@ const App = () => {
   setRawMode(true);
   useEffect(() => {
     const handleTerminalResize = () => {
-      const { columns, rows } = Deno.consoleSize();
-      setWidth(() => columns);
-      setHeight(() => rows);
+      setWidth(stdout.columns);
+      setHeight(stdout.rows);
     };
-    Deno.addSignalListener("SIGWINCH", handleTerminalResize);
+    // Ink's stdout is a TTY in Node; listen for resize events where supported.
+    // deno-lint-ignore no-explicit-any
+    (stdout as any).on?.("resize", handleTerminalResize);
     return () => {
-      Deno.removeSignalListener("SIGWINCH", handleTerminalResize);
+      // deno-lint-ignore no-explicit-any
+      (stdout as any).off?.("resize", handleTerminalResize);
     };
-  }, []);
+  }, [stdout]);
   useInput((input, key) => {
     if (input === "c" && key.ctrl) {
-      if (Deno.env.get("TMUX")) {
-        const cmd = new Deno.Command("tmux", { args: ["kill-session"] });
-        cmd.spawn();
+      if (ENV.TMUX) {
+        spawn("tmux", { args: ["kill-session"], stdout: "inherit", stderr: "inherit" });
       }
-      Deno.exit(0);
+      exit(0);
       return;
     }
     // Handle left/right arrow keys for tab navigation
diff --git a/packages/chains/bitcoin-contracts/src/generate-blocks.ts b/packages/chains/bitcoin-contracts/src/generate-blocks.ts
index bd938d545..7e3df9ed9 100644
--- a/packages/chains/bitcoin-contracts/src/generate-blocks.ts
+++ b/packages/chains/bitcoin-contracts/src/generate-blocks.ts
@@ -1,13 +1,17 @@
 import * as bitcoin from 'bitcoinjs-lib';
 import * as ecpair from 'ecpair';
 import * as ecc from 'tiny-secp256k1';
+import { args, exit } from "@effectstream/utils/runtime";
 
 const delay = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
 
 const ECPair = ecpair.ECPairFactory(ecc);
 const SATS_PER_BTC = 100_000_000;
 
-const DEFAULT_BLOCK_INTERVAL = Deno.args.includes('--block-interval') ? parseInt(Deno.args[Deno.args.indexOf('--block-interval') + 1]) : 5000;
+const argv = args();
+const DEFAULT_BLOCK_INTERVAL = argv.includes('--block-interval') ? 
+  parseInt(argv[argv.indexOf('--block-interval') + 1]) :
+  5000;
 const NETWORK = bitcoin.networks.regtest;
 console.log(`Using block interval: ${DEFAULT_BLOCK_INTERVAL}ms`);
 
@@ -65,18 +69,17 @@ const bitcoinRpcCall = async (method: string, params: any[] = [], walletName?: s
 let running = true;
 
 // Handle process signals
-if (typeof Deno !== 'undefined') {
-  Deno.addSignalListener('SIGINT', () => {
-    console.log('\nReceived SIGINT, stopping block generation...');
-    running = false;
-    Deno.exit(130);
-  });
-
-  Deno.addSignalListener('SIGTERM', () => {
-    console.log('\nReceived SIGTERM, stopping block generation...');
-    running = false;
-    Deno.exit(143);
-  });
+const onSignal = (sig: string, code: number) => () => {
+  console.log(`\nReceived ${sig}, stopping block generation...`);
+  running = false; 
+  exit(code);
+};
+if (typeof process !== "undefined") {
+  process.on("SIGINT", onSignal("SIGINT", 130));
+  process.on("SIGTERM", onSignal("SIGTERM", 143));
+} else if (typeof Deno !== "undefined") {
+  (Deno as any).addSignalListener("SIGINT", onSignal("SIGINT", 130));
+  (Deno as any).addSignalListener("SIGTERM", onSignal("SIGTERM", 143));
 }
 
 async function main() {
@@ -121,7 +124,7 @@ async function main() {
       address = await bitcoinRpcCall('getnewaddress', []);
     } catch (e) {
       console.error('Failed to get address. Make sure Bitcoin Core is running and accessible.');
-      Deno.exit(1);
+      exit(1);
     }
   }
   
@@ -160,6 +163,6 @@ async function main() {
 
 main().catch((error) => {
   console.error('Fatal error:', error);
-  Deno.exit(1);
+  exit(1);
 });
 
diff --git a/packages/chains/bitcoin-contracts/src/wait-for-block.ts b/packages/chains/bitcoin-contracts/src/wait-for-block.ts
index edeac9cf5..6e830d3b1 100644
--- a/packages/chains/bitcoin-contracts/src/wait-for-block.ts
+++ b/packages/chains/bitcoin-contracts/src/wait-for-block.ts
@@ -60,5 +60,5 @@ export async function waitForBlock(targetBlock: number) {
 
 if (import.meta.main) {
   await waitForBlock(100);
-  Deno.exit(0);
+  process.exit(0);
 }
\ No newline at end of file
diff --git a/packages/chains/evm-hardhat/src/builder/build.mod.ts b/packages/chains/evm-hardhat/src/builder/build.mod.ts
index de3bc8eca..a78503539 100755
--- a/packages/chains/evm-hardhat/src/builder/build.mod.ts
+++ b/packages/chains/evm-hardhat/src/builder/build.mod.ts
@@ -190,24 +190,25 @@ async function buildModFile(): Promise<void> {
 
   // Copy mod.ts to root and update paths to include ./build/ prefix
   const rootModContent = `// this is a auto-generated file.
-
+import fs from "node:fs";
 export * from "./build/mod.ts";
 export { contracts } from "./build/contracts.ts";
 const __dirname = import.meta.dirname ?? "";
 export const contractAddressesEvmMain: () => Record<
-  ${chainIds.map((chainId) => `"chain${chainId}"`).join(" | ")}, 
+${chainIds.map((chainId) => `"chain${chainId}"`).join(" | ")}, 
   Record<string, \`0x\${string}\`>> = () => {
 
-  ${chainFiles.join("\n")}
+  ${chainFiles.join("\n  ")}
 
-  ${chainLets.join("\n")}
+  ${chainLets.join("\n  ")}
 
-  ${chainIds.map((chainId) => `if (typeof Deno !== 'undefined' && Deno && Deno.statSync(file${chainToIndex[`chain${chainId}`]}).isFile) {
-    chain${chainId} = JSON.parse(Deno.readTextFileSync(file${chainToIndex[`chain${chainId}`]}));
+  ${chainIds.map((chainId) => `
+  if (fs.statSync(file${chainToIndex[`chain${chainId}`]}).isFile()) {
+    chain${chainId} = JSON.parse(fs.readFileSync(file${chainToIndex[`chain${chainId}`]}, 'utf-8'));
   }`).join("\n")}
 
   return {
-    ${chainIds.map((chainId) => `chain${chainId}`).join(",\n")}
+    ${chainIds.map((chainId) => `chain${chainId}`).join(",\n    ")}
   };
 }
 `;
diff --git a/packages/chains/evm-hardhat/src/remappings/remappings-forge.ts b/packages/chains/evm-hardhat/src/remappings/remappings-forge.ts
index 6e53cb452..94c191ba7 100644
--- a/packages/chains/evm-hardhat/src/remappings/remappings-forge.ts
+++ b/packages/chains/evm-hardhat/src/remappings/remappings-forge.ts
@@ -1,7 +1,9 @@
 import { parseArgs } from "@std/cli/parse-args";
+import { writeFileSync } from "node:fs";
+import { args } from "@effectstream/utils/runtime";
 
 // The depth is the number of directories where the node_modules are located.
-const flags = parseArgs(Deno.args, {
+const flags = parseArgs(args(), {
   string: ['depth', "package"],
   default: { depth: '4', package: '@effectstream' },
 });
@@ -11,7 +13,7 @@ const packageName = flags.package;
 
 if (isNaN(depth) || depth < 0) {
   console.error('Error: --depth must be a non-negative number.');
-  Deno.exit(1);
+  process.exit(1);
 }
 
 const prefix = '../'.repeat(depth);
@@ -22,6 +24,6 @@ const remappings =
     `${packageName}/=${prefix}node_modules/${packageName}/`,
   ].join('\n') + '\n';
 
-Deno.writeTextFileSync("./remappings.txt", remappings);
+writeFileSync("./remappings.txt", remappings);
 
 console.log(`Wrote forge remappings to remappings.txt`);
diff --git a/packages/chains/evm-hardhat/src/remappings/remappings-hardhat.ts b/packages/chains/evm-hardhat/src/remappings/remappings-hardhat.ts
index bc1b743fa..8d783a48e 100644
--- a/packages/chains/evm-hardhat/src/remappings/remappings-hardhat.ts
+++ b/packages/chains/evm-hardhat/src/remappings/remappings-hardhat.ts
@@ -1,9 +1,11 @@
 // Remappings for hardhat / forge are not compatible.
 // So we need to create them depending on the tool we are using.
 import { parseArgs } from "@std/cli/parse-args";
+import { writeFileSync } from "node:fs";
+import { args } from "@effectstream/utils/runtime";
 
 // The depth is the number of directories where the node_modules are located.
-const flags = parseArgs(Deno.args, {
+const flags = parseArgs(args(), {
   string: ["package"],
   default: { package: '@paima' },
 });
@@ -14,4 +16,4 @@ import * as remappings from "./assets.ts";
 const hardhatRemappings = new TextDecoder().decode(remappings.default.files["remappings.hardhat"].content)
   .replace(/@effectstream/g, packageName);
 
-Deno.writeTextFileSync("./remappings.txt", hardhatRemappings);
\ No newline at end of file
+writeFileSync("./remappings.txt", hardhatRemappings);
\ No newline at end of file
diff --git a/packages/chains/midnight-contracts/src/build-wallet.ts b/packages/chains/midnight-contracts/src/build-wallet.ts
index 5649aa2fe..fa9d84a00 100644
--- a/packages/chains/midnight-contracts/src/build-wallet.ts
+++ b/packages/chains/midnight-contracts/src/build-wallet.ts
@@ -15,6 +15,7 @@ import {
 
 import type { WalletResult, NetworkUrls } from "./types.ts";
 import type { InitialOwner } from "./types.ts";
+import { getEnv } from "@effectstream/utils/runtime";
 
 // ============================================================================
 // Wallet Facade  
@@ -42,7 +43,7 @@ export async function buildWalletAndWaitForFunds(
     const syncTimeoutMs = resolveWalletSyncTimeoutMs();
     if (balance === 0n) {
       const skipWait =
-        Deno.env.get("MIDNIGHT_SKIP_WAIT_FOR_FUNDS")?.toLowerCase() === "true";
+        getEnv("MIDNIGHT_SKIP_WAIT_FOR_FUNDS")?.toLowerCase() === "true";
       log.info("Wallet shielded balance: 0");
       log.info(
         `Waiting to receive tokens... (timeout ${syncTimeoutMs}ms${skipWait ? ", skip on timeout enabled" : ""})`
diff --git a/packages/chains/midnight-contracts/src/deploy.ts b/packages/chains/midnight-contracts/src/deploy.ts
index b002cea31..6b42bad0a 100644
--- a/packages/chains/midnight-contracts/src/deploy.ts
+++ b/packages/chains/midnight-contracts/src/deploy.ts
@@ -17,12 +17,15 @@ import type{  NetworkUrls, DeployConfig, WalletResult } from "./types.ts";
 import { buildWalletAndWaitForFunds, extractInitialOwnerFromWallet } from "./build-wallet.ts";
 import { configureMidnightNodeProviders } from "./providers.ts";
 import { midnightNetworkConfig } from "./midnight-env.ts";
+import { getEnv, cwd } from "@effectstream/utils/runtime";
+import { readdirSync, statSync } from "node:fs";
+import { writeFile } from "node:fs/promises";
 
 // Declare Deno global for type-checking when not executed under Deno tooling.
 declare const Deno: typeof globalThis.Deno;
 
 function checkEnvVariables(): void {
-  if (!Deno.env.get("MIDNIGHT_STORAGE_PASSWORD")) {
+  if (!getEnv("MIDNIGHT_STORAGE_PASSWORD")) {
     throw new Error("MIDNIGHT_STORAGE_PASSWORD is not set (Use a 16 char string)");
   }
 }
@@ -34,8 +37,8 @@ function hasManagedArtifacts(dir: string): boolean {
   const requiredDirs = ["contract", "compiler"];
   try {
     return requiredDirs.every((name) => {
-      const stats = Deno.statSync(path.join(dir, name));
-      return stats.isDirectory;
+      const stats = statSync(path.join(dir, name));
+      return stats.isDirectory();
     });
   } catch {
     return false;
@@ -44,8 +47,8 @@ function hasManagedArtifacts(dir: string): boolean {
 
 function findCompilerSubdirectory(managedDir: string): string {
   try {
-    for (const entry of Deno.readDirSync(managedDir)) {
-      if (!entry.isDirectory) continue;
+    for (const entry of readdirSync(managedDir, { withFileTypes: true })) {
+      if (!entry.isDirectory()) continue;
       const candidate = path.join(managedDir, entry.name);
       if (hasManagedArtifacts(candidate)) {
         return entry.name;
@@ -107,7 +110,7 @@ export async function deployMidnightContract(
   if (!contractDir) {
     throw new Error(
       `Could not find Midnight contract directory for "${config.contractName}". ` +
-        `Searched starting from ${config.baseDir || Deno.cwd()}. ` +
+        `Searched starting from ${config.baseDir || cwd()}. ` +
         `Please ensure you're running from a directory that contains or is a parent of the Midnight contract directory, ` +
         `or provide an explicit baseDir parameter.`
     );
@@ -180,7 +183,7 @@ export async function deployMidnightContract(
       unshieldedKeystore,
     } = walletResult;
     const resolvedDustReceiverAddress =
-      Deno.env.get("MIDNIGHT_DUST_RECEIVER_ADDRESS") ?? dustAddress;
+      getEnv("MIDNIGHT_DUST_RECEIVER_ADDRESS") ?? dustAddress;
     if (resolvedDustReceiverAddress === dustAddress) {
       log.info(`Using derived dust address: ${resolvedDustReceiverAddress}`);
     } else {
@@ -271,7 +274,7 @@ export async function deployMidnightContract(
       outputFileName,
     );
 
-    await Deno.writeTextFile(
+    await writeFile(
       outputPath,
       JSON.stringify({ contractAddress }, null, 2),
     );
diff --git a/packages/chains/midnight-contracts/src/get-wallet-info.ts b/packages/chains/midnight-contracts/src/get-wallet-info.ts
index 3d98b3e4f..c7a8c7770 100644
--- a/packages/chains/midnight-contracts/src/get-wallet-info.ts
+++ b/packages/chains/midnight-contracts/src/get-wallet-info.ts
@@ -26,6 +26,8 @@ import type { DefaultV1Configuration } from "@midnight-ntwrk/wallet-sdk-shielded
 import { CONSTANTS } from "./constants.ts";
 import type { NetworkUrls, WalletResult } from "./types.ts";
 import { midnightNetworkConfig } from "./midnight-env.ts";
+import { exit } from "node:process";
+import { getEnv, args, isNotFoundError } from "@effectstream/utils/runtime";
 
 // ============================================================================
 // Key Derivation
@@ -61,7 +63,7 @@ function deriveSeedForRole(seed: string, role: DerivationRole): Uint8Array {
  * Resolve sync timeout from env or default.
  */
 export function resolveWalletSyncTimeoutMs(): number {
-  const envValue = Deno.env.get("MIDNIGHT_WALLET_SYNC_TIMEOUT_MS");
+  const envValue = getEnv("MIDNIGHT_WALLET_SYNC_TIMEOUT_MS");
   if (!envValue) return CONSTANTS.WALLET_SYNC_TIMEOUT_MS;
   const parsed = Number(envValue);
   if (Number.isFinite(parsed) && parsed > 0) return parsed;
@@ -519,7 +521,7 @@ async function main() {
   });
 
   // Parse command-line arguments
-  const args = parseArgs(Deno.args, {
+  const parsedArgs = parseArgs(args(), {
     string: ["seed"],
     boolean: ["balance"],
     default: {
@@ -531,13 +533,13 @@ async function main() {
   try {
     await load({ envPath: ".env.testnet", export: true });
   } catch (error) {
-    if (!(error instanceof Deno.errors.NotFound)) {
+    if (!isNotFoundError(error)) {
         log.warn(`Failed to load .env.testnet: ${error}`);
     }
   }
 
-  const envSeed = Deno.env.get("MIDNIGHT_WALLET_SEED");
-  const argSeed = args.seed;
+  const envSeed = getEnv("MIDNIGHT_WALLET_SEED");
+  const argSeed = parsedArgs.seed;
   let seed = argSeed || envSeed;
 
   if (!seed) {
@@ -564,11 +566,11 @@ async function main() {
   }
 
   // Network Configuration
-  const indexer = Deno.env.get("MIDNIGHT_INDEXER_URL") || midnightNetworkConfig.indexer;
-  const indexerWS = Deno.env.get("MIDNIGHT_INDEXER_WS_URL") || midnightNetworkConfig.indexerWS;
-  const node = Deno.env.get("MIDNIGHT_NODE_URL") || midnightNetworkConfig.node;
-  const proofServer = Deno.env.get("MIDNIGHT_PROOF_SERVER_URL") || midnightNetworkConfig.proofServer;
-  
+  const indexer = getEnv("MIDNIGHT_INDEXER_URL") || midnightNetworkConfig.indexer;
+  const indexerWS = getEnv("MIDNIGHT_INDEXER_WS_URL") || midnightNetworkConfig.indexerWS;
+  const node = getEnv("MIDNIGHT_NODE_URL") || midnightNetworkConfig.node;
+  const proofServer = getEnv("MIDNIGHT_PROOF_SERVER_URL") || midnightNetworkConfig.proofServer;
+
   const networkUrls: Required<NetworkUrls> = { 
     id: "placeholder-value",
     indexer, 
@@ -577,7 +579,7 @@ async function main() {
     proofServer
   };
   
-  const networkIdRaw = Deno.env.get("MIDNIGHT_NETWORK_ID") || "undeployed";
+  const networkIdRaw = getEnv("MIDNIGHT_NETWORK_ID") || "undeployed";
   
   // Map common network names to NetworkId enum values
   // Based on midnight-js testkit examples and Lace wallet compatibility
@@ -627,7 +629,7 @@ async function main() {
     log.info("==========================================");
 
     // Only fetch balances if --balance flag is provided
-    if (args.balance) {
+    if (parsedArgs.balance) {
       log.info("==========================================");
       log.info("Fetching Balances...");
       log.info("==========================================");
@@ -721,7 +723,7 @@ async function main() {
     await walletResult.wallet.stop();
   } catch (error) {
     log.error(`Error: ${error instanceof Error ? error.message : String(error)}`);
-    Deno.exit(1);
+    exit(1);
   }
 }
 
diff --git a/packages/chains/midnight-contracts/src/midnight-env.ts b/packages/chains/midnight-contracts/src/midnight-env.ts
index 0a6fd0069..e9d01293a 100644
--- a/packages/chains/midnight-contracts/src/midnight-env.ts
+++ b/packages/chains/midnight-contracts/src/midnight-env.ts
@@ -1,28 +1,11 @@
 import type { NetworkId } from "@midnight-ntwrk/wallet-sdk-abstractions";
 import { mnemonicToSeed } from "@scure/bip39";
 import { Buffer } from "node:buffer";
+import { getEnv } from "@effectstream/utils/runtime";
 
 const getEnvValue = (key: string): string | undefined => {
-  try {
-    // @ts-ignore: Deno global check
-    if (typeof Deno !== "undefined" && Deno?.env?.get) {
-      // @ts-ignore: Deno global access
-      return Deno.env.get(key);
-    }
-  } catch (_e) { /* ignore */ }
-
-  try {
-    // @ts-ignore: Node/Process global check
-    if (typeof process !== "undefined" && process?.env) {
-      // @ts-ignore: Node/Process global access
-      return process.env[key];
-    }
-  } catch (_e) { /* ignore */ }
-
-  // Fallback for some Vite setups if process.env isn't shimmed but replace is used
-  // Note: Direct import.meta.env usage is avoided to prevent TS/Build errors in non-ESM targets
-  return undefined;
-}
+  return getEnv(key);
+};
 
 const env = (key: string | string[], fallback?: string): string => {
   if (typeof key === 'string') {
diff --git a/packages/chains/midnight-contracts/src/read-contract.ts b/packages/chains/midnight-contracts/src/read-contract.ts
index 7d346a874..197a8cf47 100644
--- a/packages/chains/midnight-contracts/src/read-contract.ts
+++ b/packages/chains/midnight-contracts/src/read-contract.ts
@@ -1,6 +1,8 @@
 // TODO Remove references to "src/managed" as this is not standard.
 
 import * as path from "@std/path";
+import { readdirSync, statSync, readFileSync } from "node:fs";
+import { getEnv, cwd, isNotFoundError, getRuntime } from "@effectstream/utils/runtime";
 
 /**
 * Information about a compiled Midnight contract
@@ -59,11 +61,11 @@ function findAllFilesRecursive(
   }
   
   try {
-    const entries = Array.from(Deno.readDirSync(dir));
+    const entries = readdirSync(dir, { withFileTypes: true });
     
     // First check if the file exists in the current directory
-    const hasFile = entries.some(entry => 
-      entry.isFile && entry.name === fileName
+    const hasFile = entries.some(entry =>
+      entry.isFile() && entry.name === fileName
     );
     
     if (hasFile) {
@@ -72,7 +74,7 @@ function findAllFilesRecursive(
     
     // Then recursively search subdirectories
     for (const entry of entries) {
-      if (entry.isDirectory) {
+      if (entry.isDirectory()) {
         // Skip common directories that are unlikely to contain contracts
         const skipDirs = ["node_modules", ".git", "dist", "build", ".deno"];
         if (skipDirs.includes(entry.name)) {
@@ -98,8 +100,8 @@ function findAllFilesRecursive(
 function isValidMidnightContractDir(dir: string, contractName: string): boolean {
   const managedDir = path.join(dir, contractName, "src/managed");
   try {
-    const stats = Deno.statSync(managedDir);
-    return stats.isDirectory;
+    const stats = statSync(managedDir);
+    return stats.isDirectory();
   } catch {
     return false;
   }
@@ -112,8 +114,8 @@ function hasManagedArtifacts(dir: string): boolean {
   const requiredDirs = ["compiler", "contract"];
   try {
     return requiredDirs.every((entry) => {
-      const stats = Deno.statSync(path.join(dir, entry));
-      return stats.isDirectory;
+      const stats = statSync(path.join(dir, entry));
+      return stats.isDirectory();
     });
   } catch {
     return false;
@@ -127,8 +129,8 @@ function hasManagedArtifacts(dir: string): boolean {
  */
 function resolveManagedArtifactsDir(managedDir: string): string {
   try {
-    for (const entry of Deno.readDirSync(managedDir)) {
-      if (!entry.isDirectory) continue;
+    for (const entry of readdirSync(managedDir, { withFileTypes: true })) {
+      if (!entry.isDirectory()) continue;
       const candidate = path.join(managedDir, entry.name);
       if (hasManagedArtifacts(candidate)) {
         return candidate;
@@ -163,7 +165,7 @@ export function findContractDirectoryForDeploy(
   if (baseDir) {
     startDir = path.resolve(baseDir);
   } else {
-    startDir = Deno.cwd();
+    startDir = cwd();
   }
   
   let currentDir = path.resolve(startDir);
@@ -171,11 +173,11 @@ export function findContractDirectoryForDeploy(
   
   while (currentDir !== root) {
     try {
-      const entries = Array.from(Deno.readDirSync(currentDir));
+      const entries = readdirSync(currentDir, { withFileTypes: true });
       
       // Check if contract directory exists here
       for (const entry of entries) {
-        if (entry.isDirectory && entry.name === contractName) {
+        if (entry.isDirectory() && entry.name === contractName) {
           // Validate it's a Midnight contract by checking for src/managed/
           if (isValidMidnightContractDir(currentDir, contractName)) {
             return currentDir;
@@ -185,7 +187,7 @@ export function findContractDirectoryForDeploy(
       
       // Also search recursively in subdirectories (up to 3 levels deep)
       for (const entry of entries) {
-        if (entry.isDirectory) {
+        if (entry.isDirectory()) {
           const skipDirs = ["node_modules", ".git", "dist", "build", ".deno"];
           if (skipDirs.includes(entry.name)) {
             continue;
@@ -193,11 +195,11 @@ export function findContractDirectoryForDeploy(
           
           try {
             const subDir = path.join(currentDir, entry.name);
-            const subEntries = Array.from(Deno.readDirSync(subDir));
+            const subEntries = readdirSync(subDir, { withFileTypes: true });
             
             // Check direct subdirectory
             for (const subEntry of subEntries) {
-              if (subEntry.isDirectory && subEntry.name === contractName) {
+              if (subEntry.isDirectory() && subEntry.name === contractName) {
                 if (isValidMidnightContractDir(subDir, contractName)) {
                   return subDir;
                 }
@@ -206,12 +208,12 @@ export function findContractDirectoryForDeploy(
             
             // Check one more level deep
             for (const subEntry of subEntries) {
-              if (subEntry.isDirectory && !skipDirs.includes(subEntry.name)) {
+              if (subEntry.isDirectory() && !skipDirs.includes(subEntry.name)) {
                 const subSubDir = path.join(subDir, subEntry.name);
                 try {
-                  const subSubEntries = Array.from(Deno.readDirSync(subSubDir));
+                  const subSubEntries = readdirSync(subSubDir, { withFileTypes: true });
                   for (const subSubEntry of subSubEntries) {
-                    if (subSubEntry.isDirectory && subSubEntry.name === contractName) {
+                    if (subSubEntry.isDirectory() && subSubEntry.name === contractName) {
                       if (isValidMidnightContractDir(subSubDir, contractName)) {
                         return subSubDir;
                       }
@@ -301,11 +303,11 @@ export function readMidnightContract(
 
   if (baseDir) {
     moduleDir = path.resolve(baseDir);
-  } else if (typeof Deno !== "undefined") {
+  } else if (getRuntime().environment === 'backend') {
     let foundDir: string | null = null;
 
     for (const candidate of candidateFileNames) {
-      const dir = findContractDirectory(Deno.cwd(), candidate, contractName);
+      const dir = findContractDirectory(cwd(), candidate, contractName);
       if (dir) {
         foundDir = dir;
         break;
@@ -315,7 +317,7 @@ export function readMidnightContract(
     if (!foundDir) {
       throw new Error(
         `Could not find Midnight contract directory for "${contractName}". ` +
-          `Searched for ${candidateFileNames.join(", ")} starting from ${path.resolve(Deno.cwd())}. ` +
+          `Searched for ${candidateFileNames.join(", ")} starting from ${path.resolve(cwd())}. ` +
           `Please ensure you're running from a directory that contains or is a parent of the Midnight contract files, ` +
           `or provide an explicit baseDir parameter. ` +
           `Note: This function only finds Midnight contracts (with src/managed/ structure), not EVM contracts.`
@@ -324,16 +326,13 @@ export function readMidnightContract(
 
     moduleDir = foundDir;
   } else {
-    const envContractAddress =
-      typeof Deno !== "undefined"
-        ? Deno.env.get("MIDNIGHT_CONTRACT_ADDRESS")
-        : undefined;
+    const envContractAddress = getEnv("MIDNIGHT_CONTRACT_ADDRESS");
     return {
       contractAddress: envContractAddress || "",
       contractInfo: { circuits: [], witnesses: [], contracts: [] },
       zkConfigPath: "",
       contractDir: "",
-    };
+    }; 
   }
 
   const normalizedModuleDir = path.resolve(moduleDir);
@@ -348,11 +347,11 @@ export function readMidnightContract(
   for (const candidate of candidateFileNames) {
     const candidatePath = path.join(moduleDir, candidate);
     try {
-      contractAddressJson = Deno.readTextFileSync(candidatePath);
+      contractAddressJson = readFileSync(candidatePath, "utf-8");
       actualContractFileName = candidate;
       break;
     } catch (err) {
-      if (err instanceof Deno.errors.NotFound) {
+      if (isNotFoundError(err)) {
         continue;
       }
       throw err;
@@ -385,7 +384,7 @@ export function readMidnightContract(
       "compiler/contract-info.json"
     );
     const zkConfigPath = path.resolve(managedArtifactsDir);
-    const contractInfoJson = Deno.readTextFileSync(contractInfoPath);
+    const contractInfoJson = readFileSync(contractInfoPath, "utf-8");
     const contractAddressInfo = JSON.parse(contractAddressJson) as MidnightContractAddressInfo;
     const contractInfo = JSON.parse(contractInfoJson) as MidnightContractCompilerInfo;
     
@@ -410,7 +409,7 @@ export function readMidnightContract(
     }
     
     // Override contract address if MIDNIGHT_CONTRACT_ADDRESS env var is set
-    const envContractAddress = Deno.env.get("MIDNIGHT_CONTRACT_ADDRESS");
+    const envContractAddress = getEnv("MIDNIGHT_CONTRACT_ADDRESS");
     if (envContractAddress) {
       contractAddress = envContractAddress;
       contractAddresses[resolvedNetworkId] = envContractAddress;
@@ -426,7 +425,7 @@ export function readMidnightContract(
 
     return cachedContractInfo[cacheKey];
   } catch (err) {
-    if (err instanceof Deno.errors.NotFound) {
+    if (isNotFoundError(err)) {
       const fileList = candidateFileNames
         .map((name) => path.join(moduleDir, name))
         .join(", ");
diff --git a/packages/effectstream-sdk/concise/src/batcher.test.ts b/packages/effectstream-sdk/concise/src/batcher.test.ts
index 9e6d72ba2..00f5ddcea 100644
--- a/packages/effectstream-sdk/concise/src/batcher.test.ts
+++ b/packages/effectstream-sdk/concise/src/batcher.test.ts
@@ -1,4 +1,5 @@
 import { assertEquals, assertThrows } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import {
   AddressType,
   type TimestampMsStr,
@@ -15,7 +16,7 @@ const MOCK_TIMESTAMP = "1234567890000" as TimestampMsStr;
 const MOCK_SIGNATURE = "0xsignature";
 const MOCK_INPUT = "some-input";
 
-Deno.test("createBatcherSubunit - creates valid subunit for EVM", () => {
+test("createBatcherSubunit - creates valid subunit for EVM", () => {
   const subunit = createBatcherSubunit(
     MOCK_TIMESTAMP,
     MOCK_ADDRESS,
@@ -31,7 +32,7 @@ Deno.test("createBatcherSubunit - creates valid subunit for EVM", () => {
   assertEquals(subunit.timestamp, MOCK_TIMESTAMP);
 });
 
-Deno.test("createBatcherSubunit - throws for unsupported address type", () => {
+test("createBatcherSubunit - throws for unsupported address type", () => {
   assertThrows(
     () => {
       createBatcherSubunit(
@@ -47,7 +48,7 @@ Deno.test("createBatcherSubunit - throws for unsupported address type", () => {
   );
 });
 
-Deno.test("createMessageForBatcher - creates valid message", () => {
+test("createMessageForBatcher - creates valid message", () => {
   const msg = createMessageForBatcher(
     "namespace",
     MOCK_TIMESTAMP,
@@ -72,7 +73,7 @@ Deno.test("createMessageForBatcher - creates valid message", () => {
   assertEquals(msg.includes(MOCK_INPUT.toLowerCase()), true);
 });
 
-Deno.test("hashBatchSubunit - returns hash starting with 0x", () => {
+test("hashBatchSubunit - returns hash starting with 0x", () => {
    const subunit = createBatcherSubunit(
     MOCK_TIMESTAMP,
     MOCK_ADDRESS,
@@ -86,7 +87,7 @@ Deno.test("hashBatchSubunit - returns hash starting with 0x", () => {
   assertEquals(hash.length > 10, true);
 });
 
-Deno.test("hashBatchSubunit - throws for unsupported address type", () => {
+test("hashBatchSubunit - throws for unsupported address type", () => {
     const subunit = {
         addressType: 999 as AddressType,
         address: MOCK_ADDRESS,
diff --git a/packages/effectstream-sdk/concise/src/delegate.test.ts b/packages/effectstream-sdk/concise/src/delegate.test.ts
index 0ca87cf84..2573eee23 100644
--- a/packages/effectstream-sdk/concise/src/delegate.test.ts
+++ b/packages/effectstream-sdk/concise/src/delegate.test.ts
@@ -1,26 +1,27 @@
 import { assertEquals } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import { accountMessages } from "./delegate.ts";
 import type { WalletAddress } from "@effectstream/utils";
 
 const MOCK_ADDRESS = "0x1234567890123456789012345678901234567890" as WalletAddress;
 const MOCK_ADDRESS_2 = "0x0987654321098765432109876543210987654321" as WalletAddress;
 
-Deno.test("accountMessages.linkAccount - formats correctly", () => {
+test("accountMessages.linkAccount - formats correctly", () => {
   const msg = accountMessages.linkAccount(1, MOCK_ADDRESS, true);
   assertEquals(msg, `link:1:${MOCK_ADDRESS}:true`);
 });
 
-Deno.test("accountMessages.linkAccount - formats correctly with false", () => {
+test("accountMessages.linkAccount - formats correctly with false", () => {
     const msg = accountMessages.linkAccount(1, MOCK_ADDRESS, false);
     assertEquals(msg, `link:1:${MOCK_ADDRESS}:false`);
 });
 
-Deno.test("accountMessages.unlinkAccountWithPrimary - formats correctly without new primary", () => {
+test("accountMessages.unlinkAccountWithPrimary - formats correctly without new primary", () => {
     const msg = accountMessages.unlinkAccountWithPrimary(1, MOCK_ADDRESS);
     assertEquals(msg, `unlink:1:${MOCK_ADDRESS}:`);
 });
 
-Deno.test("accountMessages.unlinkAccountWithPrimary - formats correctly with new primary", () => {
+test("accountMessages.unlinkAccountWithPrimary - formats correctly with new primary", () => {
     const msg = accountMessages.unlinkAccountWithPrimary(1, MOCK_ADDRESS, MOCK_ADDRESS_2);
     assertEquals(msg, `unlink:1:${MOCK_ADDRESS}:${MOCK_ADDRESS_2}`);
 });
diff --git a/packages/effectstream-sdk/config/src/config/utils.test.ts b/packages/effectstream-sdk/config/src/config/utils.test.ts
index 3055a874b..de4f25050 100644
--- a/packages/effectstream-sdk/config/src/config/utils.test.ts
+++ b/packages/effectstream-sdk/config/src/config/utils.test.ts
@@ -1,4 +1,5 @@
 import { assertEquals } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import {
   getPrimitivesForSyncProtocol,
   onlyOnce,
@@ -9,7 +10,7 @@ import type {
   ConfigSyncProtocolType,
 } from "../schema/sync-protocols/types.ts";
 
-Deno.test("onlyOnce - returns built value", () => {
+test("onlyOnce - returns built value", () => {
   const expected = { some: "value" };
   const result = onlyOnce({
     key: () => undefined,
@@ -18,7 +19,7 @@ Deno.test("onlyOnce - returns built value", () => {
   assertEquals(result, expected);
 });
 
-Deno.test("onlyNotError - returns built value", () => {
+test("onlyNotError - returns built value", () => {
   const expected = { some: "value" };
   const result = onlyNotError({
     key: () => undefined,
@@ -27,7 +28,7 @@ Deno.test("onlyNotError - returns built value", () => {
   assertEquals(result, expected);
 });
 
-Deno.test("onlyValue - returns built value when targets match", () => {
+test("onlyValue - returns built value when targets match", () => {
   const expected = { some: "value" };
   const result = onlyValue({
     value: () => "test",
@@ -37,7 +38,7 @@ Deno.test("onlyValue - returns built value when targets match", () => {
   assertEquals(result, expected);
 });
 
-Deno.test("getPrimitivesForSyncProtocol - filters primitives correctly", () => {
+test("getPrimitivesForSyncProtocol - filters primitives correctly", () => {
   const primitives = {
     "prim1": { syncProtocol: "evm", primitive: {} },
     "prim2": { syncProtocol: "cardano", primitive: {} },
@@ -53,7 +54,7 @@ Deno.test("getPrimitivesForSyncProtocol - filters primitives correctly", () => {
   assertEquals(result[0].syncProtocol, "evm");
 });
 
-Deno.test("getPrimitivesForSyncProtocol - returns empty array for no matches", () => {
+test("getPrimitivesForSyncProtocol - returns empty array for no matches", () => {
   const primitives = {
     "prim1": { syncProtocol: "evm", primitive: {} },
   };
@@ -64,7 +65,7 @@ Deno.test("getPrimitivesForSyncProtocol - returns empty array for no matches", (
   assertEquals(result.length, 0);
 });
 
-Deno.test("getPrimitivesForSyncProtocol - handles empty primitives", () => {
+test("getPrimitivesForSyncProtocol - handles empty primitives", () => {
     // @ts-ignore: Testing internal logic
     const result = getPrimitivesForSyncProtocol({}, "evm");
     assertEquals(result.length, 0);
diff --git a/packages/effectstream-sdk/crypto/src/Prando.test.ts b/packages/effectstream-sdk/crypto/src/Prando.test.ts
index 22d67762e..cc9f369f9 100644
--- a/packages/effectstream-sdk/crypto/src/Prando.test.ts
+++ b/packages/effectstream-sdk/crypto/src/Prando.test.ts
@@ -1,7 +1,8 @@
 import { assertEquals } from "jsr:@std/assert";
 import { Prando } from "./Prando.ts";
+import { test } from "@effectstream/utils/runtime";
 
-Deno.test("Prando - Deterministic sequence", () => {
+test("Prando - Deterministic sequence", () => {
   const seed = 12345;
   const rng1 = new Prando(seed);
   const rng2 = new Prando(seed);
@@ -11,7 +12,7 @@ Deno.test("Prando - Deterministic sequence", () => {
   assertEquals(rng1.nextString(5), rng2.nextString(5));
 });
 
-Deno.test("Prando - Different seeds produce different sequences", () => {
+test("Prando - Different seeds produce different sequences", () => {
   const rng1 = new Prando(12345);
   const rng2 = new Prando(67890);
 
@@ -25,7 +26,7 @@ Deno.test("Prando - Different seeds produce different sequences", () => {
   }
 });
 
-Deno.test("Prando - Reset works", () => {
+test("Prando - Reset works", () => {
     const seed = 98765;
     const rng = new Prando(seed);
     const val1 = rng.next();
diff --git a/packages/effectstream-sdk/crypto/src/paima-hash.test.ts b/packages/effectstream-sdk/crypto/src/paima-hash.test.ts
index 68e4e99e3..78175eeeb 100644
--- a/packages/effectstream-sdk/crypto/src/paima-hash.test.ts
+++ b/packages/effectstream-sdk/crypto/src/paima-hash.test.ts
@@ -1,8 +1,9 @@
 import { assertEquals } from "jsr:@std/assert";
 import { generatePaimaBlockHash } from "./paima-hash.ts";
 import type { BlockHash, PaimaBlockHash } from "@effectstream/utils";
+import { test } from "@effectstream/utils/runtime";
 
-Deno.test("generatePaimaBlockHash - generates hash correctly", () => {
+test("generatePaimaBlockHash - generates hash correctly", () => {
   const mockBlock = {
     blockInfo: [
       { blockHash: "0x123" as BlockHash },
@@ -17,7 +18,7 @@ Deno.test("generatePaimaBlockHash - generates hash correctly", () => {
   assertEquals(result.startsWith("0x"), true);
 });
 
-Deno.test("generatePaimaBlockHash - handles null previous hash", () => {
+test("generatePaimaBlockHash - handles null previous hash", () => {
     const mockBlock = {
         blockInfo: [
           { blockHash: "0x123" as BlockHash }
diff --git a/packages/effectstream-sdk/log/src/mod.ts b/packages/effectstream-sdk/log/src/mod.ts
index 3a69be197..34a88d38e 100644
--- a/packages/effectstream-sdk/log/src/mod.ts
+++ b/packages/effectstream-sdk/log/src/mod.ts
@@ -2,6 +2,7 @@ import { SeverityNumber } from "@opentelemetry/api-logs";
 import { tsLogFormatted, tsLogGetFormattedMessage, tsLogOrchestrator, type TslogLogFunc } from "./tslog.ts";
 import { otelLog, type OtelLogFunc } from "./otel/logger.ts";
 import "./brands.ts"; // register material-chalk brands
+import { getEnv } from "@effectstream/utils/runtime";
 export * from "./otel/setup.ts";
 export {
   ComponentNames,
@@ -15,8 +16,9 @@ export { DefaultLogLevels } from "./tslog.ts";
 // so that we don't need to re-import opentelemetry in every component
 export { SeverityNumber };
 
-const localLogger = Deno && Deno.env.get("EFFECTSTREAM_ORCHESTRATOR") ? tsLogOrchestrator : tsLogFormatted;
-const remoteLogger = Deno && Deno.env.get("EFFECTSTREAM_ORCHESTRATOR") ? tsLogOrchestrator : otelLog;
+const orchestratorEnv = getEnv("EFFECTSTREAM_ORCHESTRATOR");
+const localLogger = orchestratorEnv ? tsLogOrchestrator : tsLogFormatted;
+const remoteLogger = orchestratorEnv ? tsLogOrchestrator : otelLog;
 
 export const log: {
   local: TslogLogFunc;
diff --git a/packages/effectstream-sdk/utils/deno.json b/packages/effectstream-sdk/utils/deno.json
index 6ed2db0b3..dbe5a9319 100644
--- a/packages/effectstream-sdk/utils/deno.json
+++ b/packages/effectstream-sdk/utils/deno.json
@@ -4,7 +4,8 @@
   "license": "MIT",
   "exports": {
     ".": "./src/mod.ts",
-    "./node-env": "./src/config.ts"
+    "./node-env": "./src/config.ts",
+    "./runtime": "./src/runtime.ts"
   },
   "imports": {
     "@coderspirit/nominal": "npm:@coderspirit/nominal@^4.1.1",
@@ -23,4 +24,4 @@
     "js-base64": "npm:js-base64@^3.7.7",
     "js-sha512": "npm:js-sha512@^0.9.0"
   }
-}
\ No newline at end of file
+}
diff --git a/packages/effectstream-sdk/utils/src/binary-search.test.ts b/packages/effectstream-sdk/utils/src/binary-search.test.ts
index 55a08ebcf..340ddab42 100644
--- a/packages/effectstream-sdk/utils/src/binary-search.test.ts
+++ b/packages/effectstream-sdk/utils/src/binary-search.test.ts
@@ -1,37 +1,38 @@
 import { assertEquals } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import { binarySearch } from "./binary-search.ts";
 
-Deno.test("binarySearch - finds exact match", () => {
+test("binarySearch - finds exact match", () => {
   const arr = [1, 3, 5, 7, 9];
   const result = binarySearch(arr, 5, (val) => val);
   assertEquals(result, 2);
 });
 
-Deno.test("binarySearch - finds closest value >= target", () => {
+test("binarySearch - finds closest value >= target", () => {
   const arr = [1, 3, 5, 7, 9];
   const result = binarySearch(arr, 6, (val) => val);
   assertEquals(result, 3);
 });
 
-Deno.test("binarySearch - returns 0 if target is smaller than all elements", () => {
+test("binarySearch - returns 0 if target is smaller than all elements", () => {
   const arr = [1, 3, 5, 7, 9];
   const result = binarySearch(arr, 0, (val) => val);
   assertEquals(result, 0);
 });
 
-Deno.test("binarySearch - returns undefined if target is larger than all elements", () => {
+test("binarySearch - returns undefined if target is larger than all elements", () => {
   const arr = [1, 3, 5, 7, 9];
   const result = binarySearch(arr, 10, (val) => val);
   assertEquals(result, undefined);
 });
 
-Deno.test("binarySearch - returns undefined for empty array", () => {
+test("binarySearch - returns undefined for empty array", () => {
   const arr: number[] = [];
   const result = binarySearch(arr, 5, (val) => val);
   assertEquals(result, undefined);
 });
 
-Deno.test("binarySearch - works with custom projection function", () => {
+test("binarySearch - works with custom projection function", () => {
   const arr = [{ id: 10 }, { id: 20 }, { id: 30 }];
   const result = binarySearch(arr, 20, (val) => val.id);
   assertEquals(result, 1);
diff --git a/packages/effectstream-sdk/utils/src/concurrency/latch.test.ts b/packages/effectstream-sdk/utils/src/concurrency/latch.test.ts
index 9fad1b3b9..467377ef9 100644
--- a/packages/effectstream-sdk/utils/src/concurrency/latch.test.ts
+++ b/packages/effectstream-sdk/utils/src/concurrency/latch.test.ts
@@ -1,8 +1,9 @@
 import { assertEquals, assertRejects } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import { countdownLatch } from "./latch.ts";
 import { run, sleep, spawn } from "effection";
 
-Deno.test("countdownLatch - waits for countdown", async () => {
+test("countdownLatch - waits for countdown", async () => {
   await run(function* () {
     const { wait, countDown } = countdownLatch(2);
     let done = false;
@@ -25,7 +26,7 @@ Deno.test("countdownLatch - waits for countdown", async () => {
   });
 });
 
-Deno.test("countdownLatch - respects timeout", async () => {
+test("countdownLatch - respects timeout", async () => {
     await assertRejects(async () => {
         await run(function* () {
             const { wait } = countdownLatch(1);
@@ -34,7 +35,7 @@ Deno.test("countdownLatch - respects timeout", async () => {
     }, Error, "timeout");
 });
 
-Deno.test("countdownLatch - no-op if already zero", async () => {
+test("countdownLatch - no-op if already zero", async () => {
     await run(function* () {
         const { wait, countDown } = countdownLatch(1);
         countDown();
diff --git a/packages/effectstream-sdk/utils/src/concurrency/retry.test.ts b/packages/effectstream-sdk/utils/src/concurrency/retry.test.ts
index 9532f1e10..d2825f2cd 100644
--- a/packages/effectstream-sdk/utils/src/concurrency/retry.test.ts
+++ b/packages/effectstream-sdk/utils/src/concurrency/retry.test.ts
@@ -1,8 +1,9 @@
 import { assertEquals, assertRejects } from "jsr:@std/assert";
+import { test } from "@effectstream/utils/runtime";
 import { retry, tryYield } from "./retry.ts";
 import { run, sleep } from "effection";
 
-Deno.test("retry - succeeds immediately", async () => {
+test("retry - succeeds immediately", async () => {
   await run(function* () {
     const result = yield* retry(
       function* () { return "success"; },
@@ -12,7 +13,7 @@ Deno.test("retry - succeeds immediately", async () => {
   });
 });
 
-Deno.test("retry - retries until success", async () => {
+test("retry - retries until success", async () => {
   await run(function* () {
     let attempts = 0;
     const result = yield* retry(
@@ -27,7 +28,7 @@ Deno.test("retry - retries until success", async () => {
   });
 });
 
-Deno.test("retry - fails after max attempts", async () => {
+test("retry - fails after max attempts", async () => {
   await assertRejects(async () => {
     await run(function* () {
       yield* retry(
@@ -40,7 +41,7 @@ Deno.test("retry - fails after max attempts", async () => {
   }, Error, "Max attempts reached");
 });
 
-Deno.test("tryYield - success case", async () => {
+test("tryYield - success case", async () => {
     await run(function* () {
         const op = function* () { return 42; };
         const result = yield* tryYield(op());
@@ -49,7 +50,7 @@ Deno.test("tryYield - success case", async () => {
     });
 });
 
-Deno.test("tryYield - failure case", async () => {
+test("tryYield - failure case", async () => {
     await run(function* () {
         const op = function* () { throw new Error("fail"); };
         const result = yield* tryYield(op());
diff --git a/packages/effectstream-sdk/utils/src/config.ts b/packages/effectstream-sdk/utils/src/config.ts
index fbc1bda1f..d19a393c0 100644
--- a/packages/effectstream-sdk/utils/src/config.ts
+++ b/packages/effectstream-sdk/utils/src/config.ts
@@ -10,17 +10,11 @@
 // NOTE: To register a new config, we need to add it in the definitions, and then add the getter in the ENV class.
 // TODO: Is it possible to do this automatically, or just once?
 import { load } from "@std/dotenv";
+import { getEnv, setEnv } from "./runtime.ts";
 
-// Generate a random 16-character hex string for Midnight storage password
-function generateRandomHex(length: number): string {
-  const bytes = new Uint8Array(length / 2);
-  crypto.getRandomValues(bytes);
-  return Array.from(bytes, (byte) => byte.toString(16).padStart(2, "0")).join("");
-}
-
-const MIDNIGHT_STORAGE_PASSWORD_DEFAULT = generateRandomHex(16);
+const MIDNIGHT_STORAGE_PASSWORD_DEFAULT = 'yourpasswordmypassword';
 
-const EFFECTSTREAM_ENV = Deno.env.get("EFFECTSTREAM_ENV");
+const EFFECTSTREAM_ENV = getEnv("EFFECTSTREAM_ENV");
 if (EFFECTSTREAM_ENV) {
   await load({
     envPath: `.env.${EFFECTSTREAM_ENV}`, // Uses .env_<EFFECTSTREAM_ENV>
@@ -281,7 +275,7 @@ export class ENV {
     return ENV.getConfig(definitions.ORCHESTRATOR_PORT);
   }
   static set ORCHESTRATOR_PORT(port: number) {
-    Deno.env.set(definitions.ORCHESTRATOR_PORT.key, String(port));
+    setEnv(definitions.ORCHESTRATOR_PORT.key, String(port));
   }
   static get TUI_LOG_URL(): string {
     return ENV.getConfig(definitions.TUI_LOG_URL);
@@ -399,6 +393,6 @@ export class ENV {
   private static getEnv(
     key: string,
   ): string | undefined {
-    return Deno.env.get(key);
+    return getEnv(key);
   }
 }
diff --git a/packages/effectstream-sdk/utils/src/mod.ts b/packages/effectstream-sdk/utils/src/mod.ts
index 4d50bc15a..e80ce387f 100644
--- a/packages/effectstream-sdk/utils/src/mod.ts
+++ b/packages/effectstream-sdk/utils/src/mod.ts
@@ -5,3 +5,4 @@ export * from "./captcha.ts";
 export * from "./binary-search.ts";
 export * from "./concurrency/mod.ts";
 export * from "./decorators/mod.ts";
+export * from "./runtime.ts";
diff --git a/packages/effectstream-sdk/utils/src/runtime-spawn.ts b/packages/effectstream-sdk/utils/src/runtime-spawn.ts
new file mode 100644
index 000000000..c7c541e96
--- /dev/null
+++ b/packages/effectstream-sdk/utils/src/runtime-spawn.ts
@@ -0,0 +1,229 @@
+/**
+ * Cross-runtime process spawn abstraction.
+ * Use this instead of Deno.Command or node:child_process.spawn when you need
+ * code to run on Node, Bun, or Deno.
+ * 
+ * This will be refactored to only use standard packages compatible with all runtimes.
+ */
+
+/** Result of a spawned process. stdout/stderr are Web ReadableStreams so they can be pipeTo()'d. */
+export interface SpawnChild {
+  readonly pid: number;
+  /** Present when options.stdin === "piped". */
+  readonly stdin?: WritableStream<Uint8Array>;
+  readonly stdout: ReadableStream<Uint8Array>;
+  readonly stderr: ReadableStream<Uint8Array>;
+  readonly status: Promise<{ success: boolean; code?: number; signal?: string }>;
+  kill(signal?: string): void;
+  ref(): void;
+}
+
+export interface SpawnOptions {
+  args?: string[];
+  cwd?: string;
+  env?: Record<string, string>;
+  signal?: AbortSignal;
+  stdin?: "inherit" | "piped" | "null";
+  stdout?: "inherit" | "piped" | "null";
+  stderr?: "inherit" | "piped" | "null";
+}
+
+/** Output from a completed process (for spawnOutput). */
+export interface SpawnOutputResult {
+  stdout: Uint8Array;
+  stderr: Uint8Array;
+  success: boolean;
+  code?: number;
+  signal?: string;
+}
+
+/** Empty stream used when stdio is "inherit" so callers can always use pipeTo. */
+function emptyReadableStream(): ReadableStream<Uint8Array> {
+  return new ReadableStream({
+    start(controller) {
+      controller.close();
+    },
+  });
+}
+
+function spawnDeno(command: string, options: SpawnOptions = {}): SpawnChild {
+  const args = options.args ?? [];
+  const child = new (Deno as any).Command(command, {
+    args,
+    signal: options.signal,
+    cwd: options.cwd,
+    env: options.env,
+    stdin: options.stdin ?? "inherit",
+    stdout: options.stdout ?? "piped",
+    stderr: options.stderr ?? "piped",
+  }).spawn();
+
+  const stdout =
+    options.stdout === "piped"
+      ? (child.stdout as ReadableStream<Uint8Array>)
+      : emptyReadableStream();
+  const stderr =
+    options.stderr === "piped"
+      ? (child.stderr as ReadableStream<Uint8Array>)
+      : emptyReadableStream();
+
+  const status = (child.status as Promise<{ success: boolean; code?: number; signal?: string }>).then(
+    (s) => ({ success: s.success, code: s.code, signal: s.signal })
+  );
+
+  const stdin =
+    options.stdin === "piped" && (child as any).stdin
+      ? ((child as any).stdin as WritableStream<Uint8Array>)
+      : undefined;
+
+  return {
+    get pid() {
+      return child.pid;
+    },
+    stdin,
+    stdout,
+    stderr,
+    status,
+    kill(signal?: string) {
+      child.kill(signal ?? "SIGTERM");
+    },
+    ref() {
+      if (typeof child.ref === "function") child.ref();
+    },
+  };
+}
+
+function spawnNode(command: string, options: SpawnOptions = {}): SpawnChild {
+  const { spawn } = require("node:child_process");
+  const { Readable } = require("node:stream");
+
+  const args = options.args ?? [];
+  const stdio: ("inherit" | "pipe" | "ignore")[] = [
+    options.stdin === "piped" ? "pipe" : options.stdin === "null" ? "ignore" : "inherit",
+    options.stdout === "piped" ? "pipe" : options.stdout === "null" ? "ignore" : "inherit",
+    options.stderr === "piped" ? "pipe" : options.stderr === "null" ? "ignore" : "inherit",
+  ];
+
+  const cp = spawn(command, args, {
+    cwd: options.cwd,
+    env: { ...options.env, FORCE_COLOR: "true" },
+    stdio,
+    signal: options.signal,
+  });
+
+  const stdout: ReadableStream<Uint8Array> =
+    options.stdout === "piped" && cp.stdout
+      ? (Readable.toWeb(cp.stdout) as ReadableStream<Uint8Array>)
+      : emptyReadableStream();
+  const stderr: ReadableStream<Uint8Array> =
+    options.stderr === "piped" && cp.stderr
+      ? (Readable.toWeb(cp.stderr) as ReadableStream<Uint8Array>)
+      : emptyReadableStream();
+
+  const status = new Promise<{ success: boolean; code?: number; signal?: string }>(
+    (resolve) => {
+      cp.on("close", (code: number | null, signal: string | null) => {
+        resolve({
+          success: code === 0,
+          code: code ?? undefined,
+          signal: signal ?? undefined,
+        });
+      });
+    }
+  );
+
+  let stdinStream: WritableStream<Uint8Array> | undefined;
+  if (options.stdin === "piped" && cp.stdin) {
+    stdinStream = require("node:stream").Writable.toWeb(cp.stdin) as WritableStream<Uint8Array>;
+  }
+
+  return {
+    get pid() {
+      return cp.pid ?? 0;
+    },
+    stdin: stdinStream,
+    stdout,
+    stderr,
+    status,
+    kill(signal?: string) {
+      cp.kill(signal ?? "SIGTERM");
+    },
+    ref() {
+      if (typeof cp.ref === "function") cp.ref();
+    },
+  };
+}
+
+/**
+ * Spawn a child process. Returns a handle with Web ReadableStreams for stdout/stderr
+ * so they can be used with pipeTo() in any runtime.
+ */
+export function spawn(command: string, options: SpawnOptions = {}): SpawnChild {
+  if (typeof Deno !== "undefined" && (Deno as any).Command) {
+    return spawnDeno(command, options);
+  }
+  if (typeof process !== "undefined" && process.versions?.node) {
+    return spawnNode(command, options);
+  }
+  throw new Error("No process spawn implementation (Deno.Command or node:child_process) available");
+}
+
+/**
+ * Run a command and wait for it to complete, returning collected stdout/stderr.
+ * Use for short-lived commands (e.g. tmux install, kill-server).
+ */
+export async function spawnOutput(
+  command: string,
+  options: SpawnOptions & { stdinInput?: Uint8Array } = {}
+): Promise<SpawnOutputResult> {
+  const { stdinInput, ...spawnOpts } = options;
+  const useStdin = stdinInput != null;
+  const child = spawn(command, {
+    ...spawnOpts,
+    stdin: useStdin ? "piped" : spawnOpts.stdin,
+    stdout: "piped",
+    stderr: "piped",
+  });
+
+  if (useStdin && child.stdin) {
+    const writer = child.stdin.getWriter();
+    await writer.write(stdinInput);
+    await writer.close();
+  }
+
+  const [stdout, stderr, status] = await Promise.all([
+    streamToUint8Array(child.stdout),
+    streamToUint8Array(child.stderr),
+    child.status,
+  ]);
+
+  return {
+    stdout,
+    stderr,
+    success: status.success,
+    code: status.code,
+    signal: status.signal,
+  };
+}
+
+async function streamToUint8Array(stream: ReadableStream<Uint8Array>): Promise<Uint8Array> {
+  const chunks: Uint8Array[] = [];
+  const reader = stream.getReader();
+  try {
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      if (value) chunks.push(value);
+    }
+  } finally {
+    reader.releaseLock();
+  }
+  const total = chunks.reduce((n, c) => n + c.length, 0);
+  const out = new Uint8Array(total);
+  let offset = 0;
+  for (const c of chunks) {
+    out.set(c, offset);
+    offset += c.length;
+  }
+  return out;
+}
diff --git a/packages/effectstream-sdk/utils/src/runtime.ts b/packages/effectstream-sdk/utils/src/runtime.ts
new file mode 100644
index 000000000..061a15c4f
--- /dev/null
+++ b/packages/effectstream-sdk/utils/src/runtime.ts
@@ -0,0 +1,137 @@
+declare const process: {
+  env: Record<string, string | undefined>;
+  argv: string[];
+  exit(code?: number): never;
+  cwd(): string;
+  stdout: { columns?: number; rows?: number };
+  on(sig: string, fn: () => void): void;
+  off(sig: string, fn: () => void): void;
+  kill?(pid: number, sig?: string): void;
+};
+
+type RuntimeEnvironment = 'backend' | 'frontend' | 'unknown';
+type Runtime = 'node' | 'deno' | 'bun' | 'browser' | 'unknown';
+
+export function getRuntime(): {runtime: Runtime, environment: RuntimeEnvironment} {
+  // Check for Deno
+  // @ts-ignore: Deno is added to global scope in Deno environments
+  if (typeof Deno !== 'undefined') {
+    return { runtime: 'deno', environment: 'backend' };
+  }
+
+  // Check for Bun
+  // @ts-ignore: Bun is added to global scope in Bun environments
+  if (typeof Bun !== 'undefined') {
+    return { runtime: 'bun', environment: 'backend' };
+  }
+
+  // Check for Node.js
+  // Node environments have a `process` object with versions
+  if (
+    typeof process !== 'undefined' &&
+    (process as any).versions &&
+    (process as any).versions.node
+  ) {
+    return { runtime: 'node', environment: 'backend' };
+  }
+
+  // Check for Browser
+  // Browsers typically have `window` and `document`
+  if (
+    typeof window !== 'undefined' &&
+    // @ts-ignore: document is added to global scope in browser environments
+    typeof document !== 'undefined'
+  ) {
+    return { runtime: 'browser', environment: 'frontend' };
+  }
+
+  return { runtime: 'unknown', environment: 'unknown' };
+}
+
+/** Get environment variable. */
+export function getEnv(key: string): string | undefined {
+  if (typeof process !== "undefined" && process.env) return process.env[key];
+  return undefined;
+}
+
+/** Set environment variable. */
+export function setEnv(key: string, value: string): void {
+  if (typeof process !== "undefined" && process.env) {
+    process.env[key] = value;
+  }
+}
+
+/** CLI arguments (argv without script path). */
+export function args(): string[] {
+  return process.argv.slice(2);
+}
+
+/** Exit process with code. */
+export function exit(code: number | undefined): never {
+  if (code === undefined && (process as any).exitCode !== undefined) {
+    process.exit((process as any).exitCode);
+    } else {
+    process.exit(code);
+  }
+}
+
+/** Current working directory. */
+export function cwd(): string {
+  if (typeof process !== "undefined" && process.cwd) return process.cwd();
+  return ".";
+}
+
+/** Terminal size when available. */
+export function consoleSize(): { columns: number; rows: number } {
+  if (typeof process !== "undefined" && process.stdout?.columns != null) {
+    return { columns: process.stdout.columns ?? 80, rows: (process.stdout as any).rows ?? 24 };
+  }
+  return { columns: 80, rows: 24 };
+}
+
+/** Set process exit code (for graceful shutdown). */
+export function setExitCode(code: number): void {
+  (process as any).exitCode = code;
+}
+
+/**
+ * Register a test.
+ * Use: import { test } from "@effectstream/utils/runtime";
+ */
+export function test(
+  name: string,
+  fn: () => void | Promise<void>,
+): void {
+  if (typeof process !== "undefined") {
+    try {
+      // dynamic import for ESM; require for CJS
+      const mod = typeof require !== "undefined"
+        ? require("node:test")
+        : null;
+      if (mod?.test) mod.test(name, fn);
+      return;
+    } catch {
+      // node:test not available
+    }
+  }
+  throw new Error("No test runner available");
+}
+
+/** Check if error is "file/dir not found". */
+export function isNotFoundError(err: unknown): boolean {
+  if (err && typeof err === "object") {
+    const e = err as { code?: string; name?: string };
+    if (e.code === "ENOENT") return true;
+    if (e.name === "NotFound" || (e as any).constructor?.name === "NotFound") return true;
+  }
+  return false;
+}
+
+/** Cross-runtime process spawn. Re-exported from runtime-spawn. */
+export {
+  spawn,
+  spawnOutput,
+  type SpawnChild,
+  type SpawnOptions,
+  type SpawnOutputResult,
+} from "./runtime-spawn.ts";
diff --git a/packages/effectstream-sdk/wallets/scripts/build_npm.ts b/packages/effectstream-sdk/wallets/scripts/build_npm.ts
index f31a014e2..97ad86f74 100644
--- a/packages/effectstream-sdk/wallets/scripts/build_npm.ts
+++ b/packages/effectstream-sdk/wallets/scripts/build_npm.ts
@@ -1,6 +1,8 @@
 import { build, emptyDir } from "@deno/dnt";
+import { copyFileSync } from "node:fs";
+import { args } from "@effectstream/utils/runtime";
 
-const version = Deno.args[0];
+const version = args()[0];
 if (!version) {
     throw new Error("Version is required");
 }
@@ -29,8 +31,8 @@ await build({
   },
   postBuild() {
     // steps to run after building and before running the tests
-    // Deno.copyFileSync("LICENSE", "npm/LICENSE");
-    Deno.copyFileSync("README.md", "npm/README.md");
+    // copyFileSync("LICENSE", "npm/LICENSE");
+    copyFileSync("README.md", "npm/README.md");
   },
   configFile: import.meta.resolve("../deno.json"),
   compilerOptions: {
diff --git a/packages/effectstream-sdk/wallets/src/utils.test.ts b/packages/effectstream-sdk/wallets/src/utils.test.ts
index 15ef9de1c..7d974b778 100644
--- a/packages/effectstream-sdk/wallets/src/utils.test.ts
+++ b/packages/effectstream-sdk/wallets/src/utils.test.ts
@@ -4,6 +4,7 @@ import {
 } from "./utils.ts";
 import type { IInjectedConnector, IProvider } from "./IProvider.ts";
 import { AddressType } from "@effectstream/utils";
+import { test } from "@effectstream/utils/runtime";
 
 const MOCK_ADDRESS = "0xmock";
 const MOCK_METADATA = { name: "MockWallet", displayName: "Mock Wallet", icon: "", version: "1.0" };
@@ -31,20 +32,20 @@ const createMockConnector = (shouldFail = false): IInjectedConnector<unknown> =>
   },
 });
 
-Deno.test("connectInjectedWallet - simple login success", async () => {
+test("connectInjectedWallet - simple login success", async () => {
   const connector = createMockConnector();
   const provider = await connectInjectedWallet("Test", undefined, connector);
   assertEquals(provider.getAddress().address, MOCK_ADDRESS);
 });
 
-Deno.test("connectInjectedWallet - named login success", async () => {
+test("connectInjectedWallet - named login success", async () => {
   const connector = createMockConnector();
   const preference = { name: "MockWallet" };
   const provider = await connectInjectedWallet("Test", preference, connector);
   assertEquals(provider.getAddress().address, MOCK_ADDRESS);
 });
 
-Deno.test("connectInjectedWallet - external connection success", async () => {
+test("connectInjectedWallet - external connection success", async () => {
   const connector = createMockConnector();
   const preference = { 
     connection: { 
@@ -56,7 +57,7 @@ Deno.test("connectInjectedWallet - external connection success", async () => {
   assertEquals(provider.getAddress().address, MOCK_ADDRESS);
 });
 
-Deno.test("connectInjectedWallet - handles failure", async () => {
+test("connectInjectedWallet - handles failure", async () => {
   const connector = createMockConnector(true);
   await assertRejects(
     () => connectInjectedWallet("Test", undefined, connector),
diff --git a/packages/node-sdk/db/scripts/apply-migrations.ts b/packages/node-sdk/db/scripts/apply-migrations.ts
index b0c820e88..b244d7c33 100644
--- a/packages/node-sdk/db/scripts/apply-migrations.ts
+++ b/packages/node-sdk/db/scripts/apply-migrations.ts
@@ -45,5 +45,5 @@ if (import.meta.main) {
   const db = await getConnection();
   await standAloneApplyInitialMigrations(db, 0);
   console.log("✅ System migrations applied");
-  Deno.exit(0);
+  process.exit(0);
 }
diff --git a/packages/node-sdk/db/scripts/pgtyped-internal.ts b/packages/node-sdk/db/scripts/pgtyped-internal.ts
index 3573e8b76..7120948ee 100644
--- a/packages/node-sdk/db/scripts/pgtyped-internal.ts
+++ b/packages/node-sdk/db/scripts/pgtyped-internal.ts
@@ -1,30 +1,32 @@
 #!/usr/bin/env -S deno run -A
+import { spawn } from "node:child_process";
 import { waitForDb } from "./wait-for-db.ts";
 import { dirname, join } from "jsr:@std/path@1.1.3";
+import { fileURLToPath } from "node:url";
 
 async function runPgtyped() {
   try {
     console.log("🔄 Running pgtyped...");
-    const __dirname = dirname(import.meta.url.replace("file://", ""));
+    const __dirname = dirname(import.meta.url?.startsWith("file:") ? fileURLToPath(import.meta.url) : import.meta.url.replace("file://", ""));
     const configPath = join(__dirname, "../pgtypedconfig.json");
-    const command = new Deno.Command("npx", {
-      args: ["pgtyped", "-c", configPath],
-      stdout: "inherit",
-      stderr: "inherit",
+    const child = spawn("npx", ["pgtyped", "-c", configPath], {
+      stdio: "inherit",
+      shell: true,
     });
 
-    const child = command.spawn();
-    const status = await child.status;
+    const code = await new Promise<number | null>((resolve) => {
+      child.on("close", (code) => resolve(code));
+    });
 
-    if (status.success) {
+    if (code === 0) {
       console.log("✅ pgtyped completed successfully");
     } else {
       console.error("❌ pgtyped failed");
-      Deno.exit(status.code);
+      process.exit(code ?? 1);
     }
   } catch (error) {
     console.error("❌ Error running pgtyped:", error);
-    Deno.exit(1);
+    process.exit(1);
   }
 }
 
diff --git a/packages/node-sdk/db/scripts/pgtyped-update.ts b/packages/node-sdk/db/scripts/pgtyped-update.ts
index 87634cd20..da3bef842 100644
--- a/packages/node-sdk/db/scripts/pgtyped-update.ts
+++ b/packages/node-sdk/db/scripts/pgtyped-update.ts
@@ -3,9 +3,11 @@
  * Runs database startup and pgtyped generation concurrently
  */
 
+import { spawn } from "node:child_process";
 import { dirname, join } from "jsr:@std/path@1.1.3";
+import { fileURLToPath } from "node:url";
 
-const __dirname = dirname(import.meta.url.replace("file://", ""));
+const __dirname = dirname(import.meta.url?.startsWith("file:") ? fileURLToPath(import.meta.url) : import.meta.url.replace("file://", ""));
 
 interface ProcessInfo {
   name: string;
@@ -29,70 +31,43 @@ async function runProcess(processInfo: ProcessInfo): Promise<void> {
 
   console.log(`${prefix}Starting...`);
 
-  const command = new Deno.Command(processInfo.command, {
-    args: processInfo.args,
-    stdout: "piped",
-    stderr: "piped",
+  const child = spawn(processInfo.command, processInfo.args, {
+    stdio: ["inherit", "pipe", "pipe"],
+    shell: processInfo.command === "npx",
   });
 
-  const process = command.spawn();
-
-  // Handle stdout
-  const stdoutReader = process.stdout.getReader();
-  const stderrReader = process.stderr.getReader();
+  const stdoutPromise = new Promise<void>((resolve) => {
+    child.stdout?.on("data", (chunk: Buffer | string) => {
+      const text = chunk.toString();
+      text.split("\n").forEach((line) => {
+        if (line.trim()) console.log(`${prefix}${line}`);
+      });
+    });
+    child.stdout?.on("end", resolve);
+    if (!child.stdout) resolve();
+  });
 
-  // Stream stdout
-  const stdoutPromise = (async () => {
-    const decoder = new TextDecoder();
-    try {
-      while (true) {
-        const { done, value } = await stdoutReader.read();
-        if (done) break;
-        const text = decoder.decode(value);
-        // Print each line with prefix
-        text.split("\n").forEach((line) => {
-          if (line.trim()) {
-            console.log(`${prefix}${line}`);
-          }
-        });
-      }
-    } finally {
-      stdoutReader.releaseLock();
-    }
-  })();
+  const stderrPromise = new Promise<void>((resolve) => {
+    child.stderr?.on("data", (chunk: Buffer | string) => {
+      const text = chunk.toString();
+      text.split("\n").forEach((line) => {
+        if (line.trim()) console.error(`${prefix}${line}`);
+      });
+    });
+    child.stderr?.on("end", resolve);
+    if (!child.stderr) resolve();
+  });
 
-  // Stream stderr
-  const stderrPromise = (async () => {
-    const decoder = new TextDecoder();
-    try {
-      while (true) {
-        const { done, value } = await stderrReader.read();
-        if (done) break;
-        const text = decoder.decode(value);
-        // Print each line with prefix
-        text.split("\n").forEach((line) => {
-          if (line.trim()) {
-            console.error(`${prefix}${line}`);
-          }
-        });
-      }
-    } finally {
-      stderrReader.releaseLock();
-    }
-  })();
+  const exitCode = new Promise<number | null>((resolve) => {
+    child.on("close", (code) => resolve(code));
+  });
 
   if (processInfo.wait) {
-    // Wait for process to complete
-    const [status] = await Promise.all([
-      process.status,
-      stdoutPromise,
-      stderrPromise,
-    ]);
-
-    if (status.success) {
+    const [code] = await Promise.all([exitCode, stdoutPromise, stderrPromise]);
+    if (code === 0) {
       console.log(`${prefix}✅ Completed successfully`);
     } else {
-      console.error(`${prefix}❌ Failed with exit code ${status.code}`);
+      console.error(`${prefix}❌ Failed with exit code ${code}`);
       throw new Error(`Process ${processInfo.name} failed`);
     }
   }
@@ -135,7 +110,7 @@ async function main() {
     console.log("\n✅ All processes completed successfully");
   } catch (error) {
     console.error("\n❌ One or more processes failed:", error);
-    Deno.exit(1);
+    process.exit(1);
   }
 }
 
diff --git a/packages/node-sdk/db/scripts/start-pglite.ts b/packages/node-sdk/db/scripts/start-pglite.ts
index 7b30fd8a8..2a2f088b2 100644
--- a/packages/node-sdk/db/scripts/start-pglite.ts
+++ b/packages/node-sdk/db/scripts/start-pglite.ts
@@ -2,31 +2,35 @@ import { type DebugLevel, PGlite } from "@electric-sql/pglite";
 // TODO This is not working, so we load the pg_ivm extension from the node_modules folder
 // import { pg_ivm } from "@electric-sql/pglite/pg_ivm";
 import net from "node:net";
+import { statSync } from "node:fs";
 import { fromNodeSocket } from "pg-gateway/node";
 import { ENV } from "@effectstream/utils/node-env";
+import { args, cwd } from "@effectstream/utils/runtime";
 
 // TODO PORT be a ENV variable
 // Get port from arguments.
 const portArgName = "--port";
-const portArgIndex = Deno.args.indexOf(portArgName);
-const portValue = portArgIndex !== -1 ? Deno.args[portArgIndex + 1] : "5432";
+const argv = args();
+const portArgIndex = argv.indexOf(portArgName);
+const portValue = portArgIndex !== -1 ? argv[portArgIndex + 1] : "5432";
 const port = parseInt(portValue);
 if (isNaN(port)) {
   throw new Error(`Port argument ${portArgName} is not a number`);
 }
 
 // TODO: find nearest node_modules folder, as import { pg_ivm } is not working
-let nodeModulesPath = Deno.cwd();
+let nodeModulesPath = cwd();
 while (true) {
   try {
-    !Deno.statSync(nodeModulesPath + "/node_modules").isDirectory;
-    break;
-  } catch (e) {
-    if (!nodeModulesPath || nodeModulesPath === "/") {
-      throw new Error("Node modules not found");
-    }
-    nodeModulesPath = nodeModulesPath.split("/").slice(0, -1).join("/");
+    const st = statSync(nodeModulesPath + "/node_modules");
+    if (st.isDirectory()) break;
+  } catch (_e) {
+    // not found or not dir
   }
+  if (!nodeModulesPath || nodeModulesPath === "/") {
+    throw new Error("Node modules not found");
+  }
+  nodeModulesPath = nodeModulesPath.split("/").slice(0, -1).join("/");
 }
 
 const db = new PGlite(
diff --git a/packages/node-sdk/db/scripts/wait-for-db.ts b/packages/node-sdk/db/scripts/wait-for-db.ts
index 1d1dbd0f6..5bec4ff31 100644
--- a/packages/node-sdk/db/scripts/wait-for-db.ts
+++ b/packages/node-sdk/db/scripts/wait-for-db.ts
@@ -1,8 +1,12 @@
 #!/usr/bin/env -S deno run -A
+import { spawn } from "node:child_process";
+import { args, exit } from "@effectstream/utils/runtime";
+
 // Get port from arguments.
 const portArgName = "--port";
-const portArgIndex = Deno.args.indexOf(portArgName);
-const portValue = portArgIndex !== -1 ? Deno.args[portArgIndex + 1] : "5432";
+const argv = args();
+const portArgIndex = argv.indexOf(portArgName);
+const portValue = portArgIndex !== -1 ? argv[portArgIndex + 1] : "5432";
 const port = parseInt(portValue);
 if (isNaN(port)) {
   throw new Error(`Port argument ${portArgName} is not a number`);
@@ -11,24 +15,24 @@ if (isNaN(port)) {
 async function waitForDb() {
   try {
     console.log("waiting for db on port", port);
-    const command = new Deno.Command("deno", {
-      args: ["-A", "npm:wait-on", `tcp:${port}`],
-      stdout: "inherit",
-      stderr: "inherit",
+    const child = spawn("npx", ["wait-on", `tcp:${port}`], {
+      stdio: "inherit",
+      shell: true,
     });
 
-    const child = command.spawn();
-    const status = await child.status;
+    const code = await new Promise<number | null>((resolve) => {
+      child.on("close", (code, _sig) => resolve(code));
+    });
 
-    if (status.success) {
+    if (code === 0) {
       console.log("✅ Database is ready on port 5432");
     } else {
       console.error("❌ Failed to connect to database on port 5432");
-      Deno.exit(status.code);
+      exit(code ?? 1);
     }
   } catch (error) {
     console.error("❌ Error waiting for database:", error);
-    Deno.exit(1);
+    exit(1);
   }
 }
 
diff --git a/packages/node-sdk/db/src/pg-connection.test.ts b/packages/node-sdk/db/src/pg-connection.test.ts
index 1a44a2c7f..f7dcf70ce 100644
--- a/packages/node-sdk/db/src/pg-connection.test.ts
+++ b/packages/node-sdk/db/src/pg-connection.test.ts
@@ -5,11 +5,12 @@ import {
   waitUntilFree,
 } from "./pg-connection.ts";
 import { run, sleep, spawn } from "effection";
+import { test, setEnv } from "@effectstream/utils/runtime";
 
 // Force PGLITE env var to true for testing mutex logic
-Deno.env.set("PGLITE", "true");
+setEnv("PGLITE", "true");
 
-Deno.test("DB Mutex - acquires and releases lock", async () => {
+test("DB Mutex - acquires and releases lock", async () => {
   await run(function* () {
     const lockName = "test-lock";
     
@@ -25,7 +26,7 @@ Deno.test("DB Mutex - acquires and releases lock", async () => {
   });
 });
 
-Deno.test("DB Mutex - queues requests", async () => {
+test("DB Mutex - queues requests", async () => {
   await run(function* () {
     const lock1 = "lock-1";
     const lock2 = "lock-2";
@@ -59,7 +60,7 @@ Deno.test("DB Mutex - queues requests", async () => {
   });
 });
 
-Deno.test("DB Mutex - respects priority", async () => {
+test("DB Mutex - respects priority", async () => {
   await run(function* () {
     const mainLock = "main";
     const lowPrio = "low";
diff --git a/packages/node-sdk/runtime/src/main.ts b/packages/node-sdk/runtime/src/main.ts
index 76decfd36..e57492690 100644
--- a/packages/node-sdk/runtime/src/main.ts
+++ b/packages/node-sdk/runtime/src/main.ts
@@ -60,7 +60,7 @@ export function* start(config: StartConfig): Operation<void> {
     ComponentNames.EFFECTSTREAM_RUNTIME,
     [],
     SeverityNumber.INFO,
-    (log) => log("start sync"),
+    (log) => log("start sync", syncProtocols.map(p => p.name)),
   );
   for (const syncProtocol of syncProtocols) {
     yield* startSync(syncProtocol);
diff --git a/packages/node-sdk/sm/primitives/src/evm-erc20/erc20-primitive.test.ts b/packages/node-sdk/sm/primitives/src/evm-erc20/erc20-primitive.test.ts
index dbe5864a2..0fc617801 100644
--- a/packages/node-sdk/sm/primitives/src/evm-erc20/erc20-primitive.test.ts
+++ b/packages/node-sdk/sm/primitives/src/evm-erc20/erc20-primitive.test.ts
@@ -1,5 +1,6 @@
 import { assertEquals, assertThrows } from "jsr:@std/assert";
 import type { EvmAddress } from "@effectstream/utils";
+import { test } from "@effectstream/utils/runtime";
 import { run } from "effection";
 import type { ConfigSyncProtocolType, FlattenSyncProtocolIOFor } from "@effectstream/config";
 import { Erc20Primitive } from "./../mod.ts";
@@ -18,7 +19,7 @@ function cleanup() {
     PaimaPrimitiveRegistry.primitives = {};
 }
 
-Deno.test("Erc20Primitive - initializes correctly", () => {
+test("Erc20Primitive - initializes correctly", () => {
   cleanup();
   const primitive = new Erc20Primitive({
     instanceName: "test-token",
@@ -38,7 +39,7 @@ Deno.test("Erc20Primitive - initializes correctly", () => {
   assertEquals(config.contractAddress, MOCK_CONTRACT_ADDRESS);
 });
 
-Deno.test("Erc20Primitive - throws on invalid address", () => {
+test("Erc20Primitive - throws on invalid address", () => {
   cleanup();
   assertThrows(() => {
     new Erc20Primitive({
@@ -50,7 +51,7 @@ Deno.test("Erc20Primitive - throws on invalid address", () => {
   });
 });
 
-Deno.test("Erc20Primitive - getPayload generates correct state update", async () => {
+test("Erc20Primitive - getPayload generates correct state update", async () => {
   cleanup();
   const primitive = new Erc20Primitive({
     instanceName: "test-token",
@@ -91,7 +92,7 @@ Deno.test("Erc20Primitive - getPayload generates correct state update", async ()
   });
 });
 
-Deno.test("Erc20Primitive - getPayload skips state machine payload if no prefix", async () => {
+test("Erc20Primitive - getPayload skips state machine payload if no prefix", async () => {
     cleanup();
     const primitive = new Erc20Primitive({
       instanceName: "test-token",