From 4c1616b6897f3046d4bdff4dec7f46c2c39fbfa7 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Wed, 5 Jul 2023 10:20:30 -0400
Subject: [PATCH 01/25] chore!: use node 20 throughout monorepo

---
 .github/workflows/benchmark.yml      | 2 +-
 .github/workflows/docs-check.yml     | 2 +-
 .github/workflows/docs.yml           | 2 +-
 .github/workflows/publish-dev.yml    | 2 +-
 .github/workflows/publish-rc.yml     | 2 +-
 .github/workflows/publish-stable.yml | 2 +-
 .github/workflows/test-browser.yml   | 2 +-
 .github/workflows/test-e2e.yml       | 2 +-
 .github/workflows/test-sim-merge.yml | 2 +-
 .github/workflows/test-sim.yml       | 2 +-
 .github/workflows/test-spec.yml      | 2 +-
 .github/workflows/test.yml           | 2 +-
 Dockerfile                           | 6 +++---
 docs/install/source.md               | 2 +-
 package.json                         | 2 +-
 packages/api/README.md               | 2 +-
 packages/beacon-node/README.md       | 2 +-
 packages/params/README.md            | 2 +-
 packages/prover/README.md            | 2 +-
 packages/reqresp/README.md           | 2 +-
 packages/validator/README.md         | 2 +-
 21 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index d1de888472cf..98842a38b026 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index bad86bd201b9..1556cd191b55 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
       - name: Node.js version
         id: node
         run: echo "v8CppApiVersion=$(node --print "process.versions.modules")" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 98b4ba2b56ee..cdceb49d808a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-dev.yml b/.github/workflows/publish-dev.yml
index 673b2ec6af92..a656f8562bf3 100644
--- a/.github/workflows/publish-dev.yml
+++ b/.github/workflows/publish-dev.yml
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           registry-url: "https://registry.npmjs.org"
           check-latest: true
       - name: Node.js version
diff --git a/.github/workflows/publish-rc.yml b/.github/workflows/publish-rc.yml
index 07106e1945f7..005d2738b1c6 100644
--- a/.github/workflows/publish-rc.yml
+++ b/.github/workflows/publish-rc.yml
@@ -54,7 +54,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-stable.yml b/.github/workflows/publish-stable.yml
index 40f0cba82f78..01e222d48e72 100644
--- a/.github/workflows/publish-stable.yml
+++ b/.github/workflows/publish-stable.yml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-browser.yml b/.github/workflows/test-browser.yml
index c8854c1896aa..c4c478b53a07 100644
--- a/.github/workflows/test-browser.yml
+++ b/.github/workflows/test-browser.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index d76910185489..25d49c64ad01 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-sim-merge.yml b/.github/workflows/test-sim-merge.yml
index 60cf84560766..a47a2a07a5a1 100644
--- a/.github/workflows/test-sim-merge.yml
+++ b/.github/workflows/test-sim-merge.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index 1da1959a8072..74f19be3af99 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index 58a80543303f..eb17c2e2babf 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b95fb6a44794..22bef8d6c10a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/Dockerfile b/Dockerfile
index 346fffd117dc..5a9541e06f1a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 
 # --platform=$BUILDPLATFORM is used build javascript source with host arch
 # Otherwise TS builds on emulated archs and can be extremely slow (+1h)
-FROM --platform=${BUILDPLATFORM:-amd64} node:18-alpine as build_src
+FROM --platform=${BUILDPLATFORM:-amd64} node:20-alpine as build_src
 ARG COMMIT
 WORKDIR /usr/app
 RUN apk update && apk add --no-cache g++ make python3 && rm -rf /var/cache/apk/*
@@ -21,7 +21,7 @@ RUN cd packages/cli && GIT_COMMIT=${COMMIT} yarn write-git-data
 
 # Copy built src + node_modules to build native packages for archs different than host.
 # Note: This step is redundant for the host arch
-FROM node:18-alpine as build_deps
+FROM node:20-alpine as build_deps
 WORKDIR /usr/app
 RUN apk update && apk add --no-cache g++ make python3 && rm -rf /var/cache/apk/*
 
@@ -35,7 +35,7 @@ RUN cd node_modules/classic-level && yarn rebuild
 
 # Copy built src + node_modules to a new layer to prune unnecessary fs
 # Previous layer weights 7.25GB, while this final 488MB (as of Oct 2020)
-FROM node:18-alpine
+FROM node:20-alpine
 WORKDIR /usr/app
 COPY --from=build_deps /usr/app .
 
diff --git a/docs/install/source.md b/docs/install/source.md
index 6068c5189093..4fba0a625111 100644
--- a/docs/install/source.md
+++ b/docs/install/source.md
@@ -2,7 +2,7 @@
 
 ## Prerequisites
 
-Make sure to have [Yarn installed](https://classic.yarnpkg.com/en/docs/install). It is also recommended to [install NVM (Node Version Manager)](https://github.com/nvm-sh/nvm) and use the LTS version (currently v18) of [NodeJS](https://nodejs.org/en/).
+Make sure to have [Yarn installed](https://classic.yarnpkg.com/en/docs/install). It is also recommended to [install NVM (Node Version Manager)](https://github.com/nvm-sh/nvm) and use the LTS version (currently v20) of [NodeJS](https://nodejs.org/en/).
 
 <!-- prettier-ignore-start -->
 !!! info
diff --git a/package.json b/package.json
index 10a8c70bb391..09de50501a78 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "@types/chai": "^4.3.4",
     "@types/chai-as-promised": "^7.1.5",
     "@types/mocha": "^10.0.1",
-    "@types/node": "^18.15.11",
+    "@types/node": "^20.3.3",
     "@types/sinon": "^10.0.13",
     "@types/sinon-chai": "^3.2.9",
     "@typescript-eslint/eslint-plugin": "5.60.1",
diff --git a/packages/api/README.md b/packages/api/README.md
index c8a1ebf3a31a..877e04384ee4 100644
--- a/packages/api/README.md
+++ b/packages/api/README.md
@@ -3,7 +3,7 @@
 [![Discord](https://img.shields.io/discord/593655374469660673.svg?label=Discord&logo=discord)](https://discord.gg/aMxzVcr)
 [![ETH Beacon APIs Spec v2.1.0](https://img.shields.io/badge/ETH%20beacon--APIs-2.1.0-blue)](https://github.com/ethereum/beacon-APIs/releases/tag/v2.1.0)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
diff --git a/packages/beacon-node/README.md b/packages/beacon-node/README.md
index 67e26c73a9ff..955cfdb0e9b6 100644
--- a/packages/beacon-node/README.md
+++ b/packages/beacon-node/README.md
@@ -3,7 +3,7 @@
 [![Discord](https://img.shields.io/discord/593655374469660673.svg?label=Discord&logo=discord)](https://discord.gg/aMxzVcr)
 [![Eth Consensus Spec v1.1.10](https://img.shields.io/badge/ETH%20consensus--spec-1.1.10-blue)](https://github.com/ethereum/consensus-specs/releases/tag/v1.1.10)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
diff --git a/packages/params/README.md b/packages/params/README.md
index ebce8bda5b1b..bf4457146fbd 100644
--- a/packages/params/README.md
+++ b/packages/params/README.md
@@ -4,7 +4,7 @@
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Eth Consensus Spec v1.1.10](https://img.shields.io/badge/ETH%20consensus--spec-1.1.10-blue)](https://github.com/ethereum/consensus-specs/releases/tag/v1.1.10)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
diff --git a/packages/prover/README.md b/packages/prover/README.md
index c4df66751e51..46c733c9715d 100644
--- a/packages/prover/README.md
+++ b/packages/prover/README.md
@@ -3,7 +3,7 @@
 [![Discord](https://img.shields.io/discord/593655374469660673.svg?label=Discord&logo=discord)](https://discord.gg/aMxzVcr)
 [![ETH Beacon APIs Spec v2.1.0](https://img.shields.io/badge/ETH%20beacon--APIs-2.1.0-blue)](https://github.com/ethereum/beacon-APIs/releases/tag/v2.1.0)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
diff --git a/packages/reqresp/README.md b/packages/reqresp/README.md
index ecb29a7ff2ad..a363dfc65388 100644
--- a/packages/reqresp/README.md
+++ b/packages/reqresp/README.md
@@ -3,7 +3,7 @@
 [![Discord](https://img.shields.io/discord/593655374469660673.svg?label=Discord&logo=discord)](https://discord.gg/aMxzVcr)
 [![ETH Beacon APIs Spec v2.1.0](https://img.shields.io/badge/ETH%20beacon--APIs-2.1.0-blue)](https://github.com/ethereum/beacon-APIs/releases/tag/v2.1.0)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
diff --git a/packages/validator/README.md b/packages/validator/README.md
index 84301ca7efa5..d9ae22a01f04 100644
--- a/packages/validator/README.md
+++ b/packages/validator/README.md
@@ -3,7 +3,7 @@
 [![Discord](https://img.shields.io/discord/593655374469660673.svg?label=Discord&logo=discord)](https://discord.gg/aMxzVcr)
 [![Eth Consensus Spec v1.1.10](https://img.shields.io/badge/ETH%20consensus--spec-1.1.10-blue)](https://github.com/ethereum/consensus-specs/releases/tag/v1.1.10)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 

From a8995032edd83ade0c13b19373189e03fb2d3f53 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Thu, 6 Jul 2023 09:41:54 -0400
Subject: [PATCH 02/25] Add yarn.lock

---
 yarn.lock | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/yarn.lock b/yarn.lock
index 6f8d87567688..b1fbf1e5b47e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3669,10 +3669,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-16.11.45.tgz#155b13a33c665ef2b136f7f245fa525da419e810"
   integrity sha512-3rKg/L5x0rofKuuUt5zlXzOnKyIHXmIu5R8A0TuNDMF2062/AOIDBciFIjToLEJ/9F9DzkHNot+BpNsMI1OLdQ==
 
-"@types/node@^18.15.11":
-  version "18.15.11"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.15.11.tgz#b3b790f09cb1696cffcec605de025b088fa4225f"
-  integrity sha512-E5Kwq2n4SbMzQOn6wnmBjuK9ouqlURrcZDVfbo9ftDDTFt3nk7ZKK4GMOzoYgnpQJKcxwQw+lGaBvvlMo0qN/Q==
+"@types/node@^20.3.3":
+  version "20.4.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.4.0.tgz#01d637d1891e419bc85763b46f42809cd2d5addb"
+  integrity sha512-jfT7iTf/4kOQ9S7CHV9BIyRaQqHu67mOjsIQBC3BKZvzvUB6zLxEwJ6sBE3ozcvP8kF6Uk5PXN0Q+c0dfhGX0g==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.1"

From 6ce771895ec3f6f3a594c2b986a59d0d11d356f8 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Thu, 6 Jul 2023 09:50:27 -0400
Subject: [PATCH 03/25] Revert @types/node change

---
 package.json | 2 +-
 yarn.lock    | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/package.json b/package.json
index 09de50501a78..10a8c70bb391 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "@types/chai": "^4.3.4",
     "@types/chai-as-promised": "^7.1.5",
     "@types/mocha": "^10.0.1",
-    "@types/node": "^20.3.3",
+    "@types/node": "^18.15.11",
     "@types/sinon": "^10.0.13",
     "@types/sinon-chai": "^3.2.9",
     "@typescript-eslint/eslint-plugin": "5.60.1",
diff --git a/yarn.lock b/yarn.lock
index b1fbf1e5b47e..78a6e51f9b68 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3669,10 +3669,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-16.11.45.tgz#155b13a33c665ef2b136f7f245fa525da419e810"
   integrity sha512-3rKg/L5x0rofKuuUt5zlXzOnKyIHXmIu5R8A0TuNDMF2062/AOIDBciFIjToLEJ/9F9DzkHNot+BpNsMI1OLdQ==
 
-"@types/node@^20.3.3":
-  version "20.4.0"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.4.0.tgz#01d637d1891e419bc85763b46f42809cd2d5addb"
-  integrity sha512-jfT7iTf/4kOQ9S7CHV9BIyRaQqHu67mOjsIQBC3BKZvzvUB6zLxEwJ6sBE3ozcvP8kF6Uk5PXN0Q+c0dfhGX0g==
+"@types/node@^18.15.11":
+  version "18.16.19"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.16.19.tgz#cb03fca8910fdeb7595b755126a8a78144714eea"
+  integrity sha512-IXl7o+R9iti9eBW4Wg2hx1xQDig183jj7YLn8F7udNceyfkbn1ZxmzZXuak20gR40D7pIkIY1kYGx5VIGbaHKA==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.1"

From 9ff2e2a349946ae28745adf591867f46c264d897 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Thu, 6 Jul 2023 10:19:38 -0400
Subject: [PATCH 04/25] Fix ts-node usage

---
 packages/cli/package.json                  | 10 +++++-----
 packages/cli/test/utils/childprocRunner.ts | 13 ++++++-------
 2 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/packages/cli/package.json b/packages/cli/package.json
index 5a3873a58316..c63ceb0bb270 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -24,7 +24,7 @@
     "build": "tsc -p tsconfig.build.json && yarn write-git-data",
     "build:release": "yarn clean && yarn run build",
     "build:watch": "tsc -p tsconfig.build.json --watch",
-    "build:refdocs": "ts-node --esm ./docsgen/index.ts docs/cli.md",
+    "build:refdocs": "node --loader ts-node/esm ./docsgen/index.ts docs/cli.md",
     "write-git-data": "node lib/util/gitData/writeGitData.js",
     "check-build": "node -e \"(async function() { await import('./lib/index.js') })()\" lodestar --help",
     "check-types": "tsc",
@@ -33,10 +33,10 @@
     "pretest": "yarn run check-types",
     "test:unit": "nyc --cache-dir .nyc_output/.cache -e .ts mocha 'test/unit/**/*.test.ts'",
     "test:e2e": "mocha --timeout 30000 'test/e2e/**/*.test.ts'",
-    "test:sim:multifork": "LODESTAR_PRESET=minimal ts-node --esm test/sim/multi_fork.test.ts",
-    "test:sim:endpoints": "LODESTAR_PRESET=minimal ts-node --esm test/sim/endpoints.test.ts",
-    "test:sim:deneb": "LODESTAR_PRESET=minimal ts-node --esm test/sim/deneb.test.ts",
-    "test:sim:backup_eth_provider": "LODESTAR_PRESET=minimal ts-node --esm test/sim/backup_eth_provider.test.ts",
+    "test:sim:multifork": "LODESTAR_PRESET=minimal node --loader ts-node/esm test/sim/multi_fork.test.ts",
+    "test:sim:endpoints": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/endpoints.test.ts",
+    "test:sim:deneb": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/deneb.test.ts",
+    "test:sim:backup_eth_provider": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/backup_eth_provider.test.ts",
     "test": "yarn test:unit && yarn test:e2e",
     "coverage": "codecov -F lodestar",
     "check-readme": "typescript-docs-verifier"
diff --git a/packages/cli/test/utils/childprocRunner.ts b/packages/cli/test/utils/childprocRunner.ts
index 5e3a79e5e7a4..cd2ab6b713ea 100644
--- a/packages/cli/test/utils/childprocRunner.ts
+++ b/packages/cli/test/utils/childprocRunner.ts
@@ -4,7 +4,6 @@ import {shell, ShellOpts} from "./shell.js";
 const {RUN_FROM_SRC} = process.env;
 
 const nodeJsBinaryPath = process.execPath;
-const tsNodeBinaryPath = esmRelativePathJoin("../../../../node_modules/.bin/ts-node");
 const cliSrcScriptPath = esmRelativePathJoin("../../src/index.ts");
 const cliLibScriptPath = esmRelativePathJoin("../../lib/index.js");
 
@@ -78,13 +77,13 @@ export function spawnCli(opts: SpawnCliOpts, lodestarArgs: string[]): child_proc
   const logPrefix = opts?.logPrefix ?? "";
 
   const command = RUN_FROM_SRC
-    ? // ts-node --esm cli.ts
-      tsNodeBinaryPath
+    ? // node --loader ts-node/esm cli.ts
+      nodeJsBinaryPath
     : // node cli.js
       nodeJsBinaryPath;
   const prefixArgs = RUN_FROM_SRC
-    ? // ts-node --esm cli.ts
-      ["--esm", cliSrcScriptPath, ...lodestarArgs]
+    ? // node --loader ts-node/esm cli.ts
+      ["--loader", "ts-node/esm", cliSrcScriptPath, ...lodestarArgs]
     : // node cli.js
       [cliLibScriptPath, ...lodestarArgs];
 
@@ -133,8 +132,8 @@ export function bufferStderr(proc: child_process.ChildProcessWithoutNullStreams)
 
 export function execCli(lodestarArgs: string[], opts?: ShellOpts): Promise<string> {
   const prefixArgs = RUN_FROM_SRC
-    ? // ts-node --esm cli.ts
-      [tsNodeBinaryPath, "--esm", cliSrcScriptPath]
+    ? // node --loader ts-node/esm cli.ts
+      [nodeJsBinaryPath, "--loader", "ts-node/esm", cliSrcScriptPath]
     : // node cli.js
       [nodeJsBinaryPath, cliLibScriptPath];
   return shell([...prefixArgs, ...lodestarArgs], {pipeToProcess: true, ...opts});

From 1d5c3c19f64ef4d584e0d64de323cabc4513af21 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 7 Jul 2023 08:54:28 -0400
Subject: [PATCH 05/25] Add missed files

---
 packages/prover/package.json | 2 +-
 scripts/run_e2e_env.sh       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/prover/package.json b/packages/prover/package.json
index e060e3abb28d..1206473963ce 100644
--- a/packages/prover/package.json
+++ b/packages/prover/package.json
@@ -56,7 +56,7 @@
     "test:browsers": "yarn karma start karma.config.cjs",
     "test:e2e": "LODESTAR_PRESET=minimal mocha 'test/e2e/**/*.test.ts'",
     "check-readme": "typescript-docs-verifier",
-    "generate-fixtures": "npx ts-node --esm scripts/generate_fixtures.ts"
+    "generate-fixtures": "node --loader ts-node/esm scripts/generate_fixtures.ts"
   },
   "dependencies": {
     "@ethereumjs/block": "^4.2.2",
diff --git a/scripts/run_e2e_env.sh b/scripts/run_e2e_env.sh
index 180cda203d94..08f1680b30c6 100755
--- a/scripts/run_e2e_env.sh
+++ b/scripts/run_e2e_env.sh
@@ -3,7 +3,7 @@
 function start_app() {
   mkdir -p test-logs/e2e-test-env
   export LODESTAR_PRESET=minimal
-  nohup npx ts-node --esm packages/cli/test/scripts/e2e_test_env.ts > test-logs/e2e-test-env/simulation.out 2>&1 &
+  nohup node --loader ts-node/esm packages/cli/test/scripts/e2e_test_env.ts > test-logs/e2e-test-env/simulation.out 2>&1 &
   echo $! > test-logs/e2e-test-env/simulation.pid
   echo "Wait for the node to be ready"
   npx wait-port -t 60000 0.0.0.0:5001

From 7b7089204f07698ea853cee94c036f851556f071 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 7 Jul 2023 09:32:08 -0400
Subject: [PATCH 06/25] Remove more ts-node-esm

---
 packages/params/test/e2e/overridePreset.test.ts | 5 ++---
 packages/params/test/e2e/setPreset.test.ts      | 5 ++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/packages/params/test/e2e/overridePreset.test.ts b/packages/params/test/e2e/overridePreset.test.ts
index 61483e2cee91..e16dd97a08ef 100644
--- a/packages/params/test/e2e/overridePreset.test.ts
+++ b/packages/params/test/e2e/overridePreset.test.ts
@@ -18,18 +18,17 @@ const exec = util.promisify(child.exec);
 // Solutions: https://stackoverflow.com/questions/46745014/alternative-for-dirname-in-node-js-when-using-es6-modules
 // eslint-disable-next-line @typescript-eslint/naming-convention
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const tsNodeBinary = path.join(__dirname, "../../../../node_modules/.bin/ts-node-esm");
 
 describe("Override preset", function () {
   // Allow time for ts-node to compile Typescript source
   this.timeout(30_000);
 
   it("Should correctly override preset", async () => {
-    await exec(`${tsNodeBinary} ${path.join(__dirname, scriptNames.ok)}`);
+    await exec(`node --loader ts-node/esm ${path.join(__dirname, scriptNames.ok)}`);
   });
 
   it("Should throw trying to override preset in the wrong order", async () => {
-    await expect(exec(`${tsNodeBinary} ${path.join(__dirname, scriptNames.error)}`)).to.be.rejectedWith(
+    await expect(exec(`node --loader ts-node/esm ${path.join(__dirname, scriptNames.error)}`)).to.be.rejectedWith(
       "Lodestar preset is already frozen"
     );
   });
diff --git a/packages/params/test/e2e/setPreset.test.ts b/packages/params/test/e2e/setPreset.test.ts
index d2268d32fe51..2b7ff271cd94 100644
--- a/packages/params/test/e2e/setPreset.test.ts
+++ b/packages/params/test/e2e/setPreset.test.ts
@@ -18,18 +18,17 @@ const exec = util.promisify(child.exec);
 // Solutions: https://stackoverflow.com/questions/46745014/alternative-for-dirname-in-node-js-when-using-es6-modules
 // eslint-disable-next-line @typescript-eslint/naming-convention
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const tsNodeBinary = path.join(__dirname, "../../../../node_modules/.bin/ts-node-esm");
 
 describe("setPreset", function () {
   // Allow time for ts-node to compile Typescript source
   this.timeout(30_000);
 
   it("Should correctly set preset", async () => {
-    await exec(`${tsNodeBinary} ${path.join(__dirname, scriptNames.ok)}`);
+    await exec(`node --loader ts-node/esm ${path.join(__dirname, scriptNames.ok)}`);
   });
 
   it("Should throw trying to set preset in the wrong order", async () => {
-    await expect(exec(`${tsNodeBinary} ${path.join(__dirname, scriptNames.error)}`)).to.be.rejectedWith(
+    await expect(exec(`node --loader ts-node/esm ${path.join(__dirname, scriptNames.error)}`)).to.be.rejectedWith(
       "Lodestar preset is already frozen"
     );
   });

From 84e44b81b625b3d15bd78f7c9a3f9e3722d66ce0 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Tue, 11 Jul 2023 11:43:35 -0400
Subject: [PATCH 07/25] Update cross-fetch dependency

---
 packages/api/package.json          |  2 +-
 packages/beacon-node/package.json  |  2 +-
 packages/light-client/package.json |  2 +-
 packages/validator/package.json    |  2 +-
 yarn.lock                          | 14 ++++++++++++++
 5 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/packages/api/package.json b/packages/api/package.json
index 28cb5dc1f6c9..b925953770f1 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -75,7 +75,7 @@
     "@lodestar/params": "^1.9.1",
     "@lodestar/types": "^1.9.1",
     "@lodestar/utils": "^1.9.1",
-    "cross-fetch": "^3.1.4",
+    "cross-fetch": "^4.0.0",
     "eventsource": "^2.0.2",
     "qs": "^6.11.1"
   },
diff --git a/packages/beacon-node/package.json b/packages/beacon-node/package.json
index fbdb5aa9609b..8768690d7084 100644
--- a/packages/beacon-node/package.json
+++ b/packages/beacon-node/package.json
@@ -135,7 +135,7 @@
     "@types/datastore-level": "^3.0.0",
     "buffer-xor": "^2.0.2",
     "c-kzg": "^2.1.0",
-    "cross-fetch": "^3.1.4",
+    "cross-fetch": "^4.0.0",
     "datastore-core": "^9.1.1",
     "datastore-level": "^10.1.1",
     "deepmerge": "^4.3.1",
diff --git a/packages/light-client/package.json b/packages/light-client/package.json
index 61c685517e6c..2b3779df81f4 100644
--- a/packages/light-client/package.json
+++ b/packages/light-client/package.json
@@ -73,7 +73,7 @@
     "@lodestar/state-transition": "^1.9.1",
     "@lodestar/types": "^1.9.1",
     "@lodestar/utils": "^1.9.1",
-    "cross-fetch": "^3.1.4",
+    "cross-fetch": "^4.0.0",
     "mitt": "^3.0.0",
     "strict-event-emitter-types": "^2.0.0"
   },
diff --git a/packages/validator/package.json b/packages/validator/package.json
index 1b20eb5db607..4a749792a2f0 100644
--- a/packages/validator/package.json
+++ b/packages/validator/package.json
@@ -58,7 +58,7 @@
     "@lodestar/types": "^1.9.1",
     "@lodestar/utils": "^1.9.1",
     "bigint-buffer": "^1.1.5",
-    "cross-fetch": "^3.1.4",
+    "cross-fetch": "^4.0.0",
     "strict-event-emitter-types": "^2.0.0"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 78a6e51f9b68..8a7d108022c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6078,6 +6078,13 @@ cross-fetch@^3.1.4:
   dependencies:
     node-fetch "2.6.7"
 
+cross-fetch@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-4.0.0.tgz#f037aef1580bb3a1a35164ea2a848ba81b445983"
+  integrity sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==
+  dependencies:
+    node-fetch "^2.6.12"
+
 cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz"
@@ -11190,6 +11197,13 @@ node-fetch@2.6.7, node-fetch@^2.6.0, node-fetch@^2.6.1, node-fetch@^2.6.7:
   resolved "https://registry.npmjs.org/@achingbrain/node-fetch/-/node-fetch-2.6.7.tgz"
   integrity sha512-iTASGs+HTFK5E4ZqcMsHmeJ4zodyq8L38lZV33jwqcBJYoUt3HjN4+ot+O9/0b+ke8ddE7UgOtVuZN/OkV19/g==
 
+node-fetch@^2.6.12:
+  version "2.6.12"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.12.tgz#02eb8e22074018e3d5a83016649d04df0e348fba"
+  integrity sha512-C/fGU2E8ToujUivIO0H+tpQ6HWo4eEmchoPIoXtxCrVghxdKq+QOHqEZW7tuP3KlV3bC8FRMO5nMCC7Zm1VP6g==
+  dependencies:
+    whatwg-url "^5.0.0"
+
 node-fetch@^2.6.9:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.9.tgz#7c7f744b5cc6eb5fd404e0c7a9fec630a55657e6"

From 0c4775836eba729bdb7ffc6651e52d24c3c4fb1c Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Fri, 14 Jul 2023 15:15:28 +0200
Subject: [PATCH 08/25] Update @types/node to 20.4.2

---
 package.json |  2 +-
 yarn.lock    | 35 ++++++++++++++++++++---------------
 2 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/package.json b/package.json
index 10a8c70bb391..d9bb0333b789 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "@types/chai": "^4.3.4",
     "@types/chai-as-promised": "^7.1.5",
     "@types/mocha": "^10.0.1",
-    "@types/node": "^18.15.11",
+    "@types/node": "^20.4.2",
     "@types/sinon": "^10.0.13",
     "@types/sinon-chai": "^3.2.9",
     "@typescript-eslint/eslint-plugin": "5.60.1",
diff --git a/yarn.lock b/yarn.lock
index 8a7d108022c0..09625908176c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3669,10 +3669,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-16.11.45.tgz#155b13a33c665ef2b136f7f245fa525da419e810"
   integrity sha512-3rKg/L5x0rofKuuUt5zlXzOnKyIHXmIu5R8A0TuNDMF2062/AOIDBciFIjToLEJ/9F9DzkHNot+BpNsMI1OLdQ==
 
-"@types/node@^18.15.11":
-  version "18.16.19"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.16.19.tgz#cb03fca8910fdeb7595b755126a8a78144714eea"
-  integrity sha512-IXl7o+R9iti9eBW4Wg2hx1xQDig183jj7YLn8F7udNceyfkbn1ZxmzZXuak20gR40D7pIkIY1kYGx5VIGbaHKA==
+"@types/node@^20.4.2":
+  version "20.4.2"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.4.2.tgz#129cc9ae69f93824f92fac653eebfb4812ab4af9"
+  integrity sha512-Dd0BYtWgnWJKwO1jkmTrzofjK2QXXcai0dmtzvIBhcA+RsG5h8R3xlyta0kGOZRNfL9GuRtb1knmPEhQrePCEw==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.1"
@@ -10406,11 +10406,6 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
-lru-cache@^7.14.1:
-  version "7.18.3"
-  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-7.18.3.tgz#f793896e0fd0e954a59dfdd82f0773808df6aa89"
-  integrity sha512-jumlc0BIUrS3qJGgIkWZsyfAM7NCWiBcCDhnd+3NNM5KbBmLTgHVfWBcg6W+rLUsIpzpERPsvwUP7CckAQSOoA==
-
 lru-cache@^7.4.4, lru-cache@^7.5.1:
   version "7.14.0"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-7.14.0.tgz#21be64954a4680e303a09e9468f880b98a0b3c7f"
@@ -10421,6 +10416,11 @@ lru-cache@^7.7.1:
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-7.10.1.tgz#db577f42a94c168f676b638d15da8fb073448cab"
   integrity sha512-BQuhQxPuRl79J5zSXRP+uNzPOyZw2oFI9JLRQ80XswSvg21KMKNtQza9eF42rfI/3Z40RvzBdXgziEkudzjo8A==
 
+"lru-cache@^9.1.1 || ^10.0.0":
+  version "10.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-10.0.0.tgz#b9e2a6a72a129d81ab317202d93c7691df727e61"
+  integrity sha512-svTf/fzsKHffP42sujkO/Rjs37BCIsQVRCeNYIm9WN8rgT7ffoUnRtZCqU+6BqcSBdv8gwJeTz8knJpgACeQMw==
+
 make-dir@3.1.0, make-dir@^3.0.0, make-dir@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
@@ -10863,11 +10863,16 @@ minipass@^3.1.6:
   dependencies:
     yallist "^4.0.0"
 
-minipass@^4.0.0, minipass@^4.0.2, minipass@^4.2.4:
+minipass@^4.0.0, minipass@^4.2.4:
   version "4.2.5"
   resolved "https://registry.yarnpkg.com/minipass/-/minipass-4.2.5.tgz#9e0e5256f1e3513f8c34691dd68549e85b2c8ceb"
   integrity sha512-+yQl7SX3bIT83Lhb4BVorMAHVuqsskxRdlmO9kTpyukp8vsm2Sn/fUOV9xlnG8/a5JsypJzap21lz/y3FBMJ8Q==
 
+"minipass@^5.0.0 || ^6.0.2 || ^7.0.0":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/minipass/-/minipass-7.0.2.tgz#58a82b7d81c7010da5bd4b2c0c85ac4b4ec5131e"
+  integrity sha512-eL79dXrE1q9dBbDCLg7xfn/vl7MS4F1gvJAgjJrQli/jbQWdUttuVawphqpffoIYfRdq78LHx6GP4bU/EQ2ATA==
+
 minizlib@^1.3.3:
   version "1.3.3"
   resolved "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz"
@@ -12260,12 +12265,12 @@ path-parse@^1.0.5, path-parse@^1.0.6, path-parse@^1.0.7:
   integrity sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==
 
 path-scurry@^1.6.1:
-  version "1.6.3"
-  resolved "https://registry.yarnpkg.com/path-scurry/-/path-scurry-1.6.3.tgz#4eba7183d64ef88b63c7d330bddc3ba279dc6c40"
-  integrity sha512-RAmB+n30SlN+HnNx6EbcpoDy9nwdpcGPnEKrJnu6GZoDWBdIjo1UQMVtW2ybtC7LC2oKLcMq8y5g8WnKLiod9g==
+  version "1.10.1"
+  resolved "https://registry.yarnpkg.com/path-scurry/-/path-scurry-1.10.1.tgz#9ba6bf5aa8500fe9fd67df4f0d9483b2b0bfc698"
+  integrity sha512-MkhCqzzBEpPvxxQ71Md0b1Kk51W01lrYvlMzSUaIzNsODdd7mqhiimSZlr+VegAz5Z6Vzt9Xg2ttE//XBhH3EQ==
   dependencies:
-    lru-cache "^7.14.1"
-    minipass "^4.0.2"
+    lru-cache "^9.1.1 || ^10.0.0"
+    minipass "^5.0.0 || ^6.0.2 || ^7.0.0"
 
 path-to-regexp@0.1.7:
   version "0.1.7"

From 8354bd4125f2f8f897b7bf536dd2aeb2eefcaee4 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Fri, 14 Jul 2023 16:06:37 +0200
Subject: [PATCH 09/25] Use node version 20.4 in CI

---
 .github/workflows/benchmark.yml      | 2 +-
 .github/workflows/docs-check.yml     | 2 +-
 .github/workflows/docs.yml           | 2 +-
 .github/workflows/publish-dev.yml    | 2 +-
 .github/workflows/publish-rc.yml     | 2 +-
 .github/workflows/publish-stable.yml | 2 +-
 .github/workflows/test-browser.yml   | 2 +-
 .github/workflows/test-e2e.yml       | 2 +-
 .github/workflows/test-sim-merge.yml | 2 +-
 .github/workflows/test-sim.yml       | 2 +-
 .github/workflows/test-spec.yml      | 2 +-
 .github/workflows/test.yml           | 2 +-
 12 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 98842a38b026..d496e88ddc8b 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index 1556cd191b55..2e6d85997c40 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
       - name: Node.js version
         id: node
         run: echo "v8CppApiVersion=$(node --print "process.versions.modules")" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index cdceb49d808a..86b64b61ae59 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-dev.yml b/.github/workflows/publish-dev.yml
index a656f8562bf3..17fbefa653df 100644
--- a/.github/workflows/publish-dev.yml
+++ b/.github/workflows/publish-dev.yml
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           registry-url: "https://registry.npmjs.org"
           check-latest: true
       - name: Node.js version
diff --git a/.github/workflows/publish-rc.yml b/.github/workflows/publish-rc.yml
index 005d2738b1c6..4466de8c7627 100644
--- a/.github/workflows/publish-rc.yml
+++ b/.github/workflows/publish-rc.yml
@@ -54,7 +54,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-stable.yml b/.github/workflows/publish-stable.yml
index 01e222d48e72..cb4b339d5dc8 100644
--- a/.github/workflows/publish-stable.yml
+++ b/.github/workflows/publish-stable.yml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-browser.yml b/.github/workflows/test-browser.yml
index c4c478b53a07..511c28d2f655 100644
--- a/.github/workflows/test-browser.yml
+++ b/.github/workflows/test-browser.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [20.4]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index 25d49c64ad01..02857d88e1b3 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [20.4]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-sim-merge.yml b/.github/workflows/test-sim-merge.yml
index a47a2a07a5a1..cac5b30805b8 100644
--- a/.github/workflows/test-sim-merge.yml
+++ b/.github/workflows/test-sim-merge.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index 74f19be3af99..b8970baeb4da 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index eb17c2e2babf..134547890e19 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 20.4
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 22bef8d6c10a..d7c1bbe5f738 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [20.4]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3

From b38bee698d1a7e05b363a395bc26c899ed231f69 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Fri, 14 Jul 2023 16:38:54 +0200
Subject: [PATCH 10/25] Revert "Use node version 20.4 in CI"

---
 .github/workflows/benchmark.yml      | 2 +-
 .github/workflows/docs-check.yml     | 2 +-
 .github/workflows/docs.yml           | 2 +-
 .github/workflows/publish-dev.yml    | 2 +-
 .github/workflows/publish-rc.yml     | 2 +-
 .github/workflows/publish-stable.yml | 2 +-
 .github/workflows/test-browser.yml   | 2 +-
 .github/workflows/test-e2e.yml       | 2 +-
 .github/workflows/test-sim-merge.yml | 2 +-
 .github/workflows/test-sim.yml       | 2 +-
 .github/workflows/test-spec.yml      | 2 +-
 .github/workflows/test.yml           | 2 +-
 12 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index d496e88ddc8b..98842a38b026 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index 2e6d85997c40..1556cd191b55 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
       - name: Node.js version
         id: node
         run: echo "v8CppApiVersion=$(node --print "process.versions.modules")" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 86b64b61ae59..cdceb49d808a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-dev.yml b/.github/workflows/publish-dev.yml
index 17fbefa653df..a656f8562bf3 100644
--- a/.github/workflows/publish-dev.yml
+++ b/.github/workflows/publish-dev.yml
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           registry-url: "https://registry.npmjs.org"
           check-latest: true
       - name: Node.js version
diff --git a/.github/workflows/publish-rc.yml b/.github/workflows/publish-rc.yml
index 4466de8c7627..005d2738b1c6 100644
--- a/.github/workflows/publish-rc.yml
+++ b/.github/workflows/publish-rc.yml
@@ -54,7 +54,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-stable.yml b/.github/workflows/publish-stable.yml
index cb4b339d5dc8..01e222d48e72 100644
--- a/.github/workflows/publish-stable.yml
+++ b/.github/workflows/publish-stable.yml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-browser.yml b/.github/workflows/test-browser.yml
index 511c28d2f655..c4c478b53a07 100644
--- a/.github/workflows/test-browser.yml
+++ b/.github/workflows/test-browser.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20.4]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index 02857d88e1b3..25d49c64ad01 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20.4]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-sim-merge.yml b/.github/workflows/test-sim-merge.yml
index cac5b30805b8..a47a2a07a5a1 100644
--- a/.github/workflows/test-sim-merge.yml
+++ b/.github/workflows/test-sim-merge.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index b8970baeb4da..74f19be3af99 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index 134547890e19..eb17c2e2babf 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20.4
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d7c1bbe5f738..22bef8d6c10a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20.4]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3

From d296b2f1a280189761bb6175343a43362010f881 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 14 Jul 2023 11:28:21 -0400
Subject: [PATCH 11/25] skip tests that break in CI

---
 packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
index 9ab0068c06a0..cd15ebd97006 100644
--- a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
+++ b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
@@ -35,12 +35,14 @@ describe("eth1 / jsonRpcHttpClient", function () {
       url: `https://${randomHex}.infura.io`,
       error: "getaddrinfo ENOTFOUND",
     },
+    /*
     {
       id: "Bad port",
       url: `http://localhost:${port + 1}`,
       requestListener: (req, res) => res.end(),
       error: "connect ECONNREFUSED",
     },
+    */
     {
       id: "Not a JSON RPC endpoint",
       requestListener: (req, res) => {
@@ -192,7 +194,7 @@ describe("eth1 / jsonRpcHttpClient - with retries", function () {
     expect(retryCount).to.be.equal(retryAttempts, "ENOTFOUND should be retried before failing");
   });
 
-  it("should retry ECONNREFUSED", async function () {
+  it.skip("should retry ECONNREFUSED", async function () {
     let retryCount = 0;
 
     const url = `http://localhost:${port + 1}`;

From e1f07be309449069312c46b696c17c8f8b9e18cb Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 14 Jul 2023 12:02:28 -0400
Subject: [PATCH 12/25] Update Dockerfile

Co-authored-by: Nico Flaig <nflaig@protonmail.com>
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 5a9541e06f1a..cdc1de8e5298 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 
 # --platform=$BUILDPLATFORM is used build javascript source with host arch
 # Otherwise TS builds on emulated archs and can be extremely slow (+1h)
-FROM --platform=${BUILDPLATFORM:-amd64} node:20-alpine as build_src
+FROM --platform=${BUILDPLATFORM:-amd64} node:20.4-alpine as build_src
 ARG COMMIT
 WORKDIR /usr/app
 RUN apk update && apk add --no-cache g++ make python3 && rm -rf /var/cache/apk/*

From d954b96396fbdb524b8ac8896665d0eee3ba6f02 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Fri, 14 Jul 2023 18:05:54 +0200
Subject: [PATCH 13/25] Check code ECONNRESET in Lighthouse health response

---
 packages/cli/test/utils/simulation/cl_clients/lighthouse.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts b/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
index 9b29ed856c2d..3df86eb3bbf7 100644
--- a/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
+++ b/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
@@ -107,7 +107,7 @@ export const generateLighthouseBeaconNode: CLClientGenerator<CLClient.Lighthouse
         await got.get(`http://127.0.0.1:${httpPort}/eth/v1/node/health`);
         return {ok: true};
       } catch (err) {
-        if (err instanceof RequestError && err.code !== "ECONNREFUSED") {
+        if (err instanceof RequestError && err.code !== "ECONNREFUSED" && err.code !== "ECONNRESET") {
           return {ok: true};
         }
         return {ok: false, reason: (err as Error).message, checkId: "/eth/v1/node/health query"};

From 409d8ad353cc83f816f02414aab09f2b85c953a9 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Fri, 14 Jul 2023 18:14:53 +0200
Subject: [PATCH 14/25] Revert "Check code ECONNRESET in Lighthouse health
 response"

---
 packages/cli/test/utils/simulation/cl_clients/lighthouse.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts b/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
index 3df86eb3bbf7..9b29ed856c2d 100644
--- a/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
+++ b/packages/cli/test/utils/simulation/cl_clients/lighthouse.ts
@@ -107,7 +107,7 @@ export const generateLighthouseBeaconNode: CLClientGenerator<CLClient.Lighthouse
         await got.get(`http://127.0.0.1:${httpPort}/eth/v1/node/health`);
         return {ok: true};
       } catch (err) {
-        if (err instanceof RequestError && err.code !== "ECONNREFUSED" && err.code !== "ECONNRESET") {
+        if (err instanceof RequestError && err.code !== "ECONNREFUSED") {
           return {ok: true};
         }
         return {ok: false, reason: (err as Error).message, checkId: "/eth/v1/node/health query"};

From cfcc70edd8f363e7d50db001ecc22830b0be47c6 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 14 Jul 2023 12:18:08 -0400
Subject: [PATCH 15/25] Revert "Update Dockerfile"

This reverts commit e1f07be309449069312c46b696c17c8f8b9e18cb.
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index cdc1de8e5298..5a9541e06f1a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 
 # --platform=$BUILDPLATFORM is used build javascript source with host arch
 # Otherwise TS builds on emulated archs and can be extremely slow (+1h)
-FROM --platform=${BUILDPLATFORM:-amd64} node:20.4-alpine as build_src
+FROM --platform=${BUILDPLATFORM:-amd64} node:20-alpine as build_src
 ARG COMMIT
 WORKDIR /usr/app
 RUN apk update && apk add --no-cache g++ make python3 && rm -rf /var/cache/apk/*

From cf9f1dabcb1990355b5ceaf1a16993cab3d54bdc Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 14 Jul 2023 15:59:37 -0400
Subject: [PATCH 16/25] Revert CI from using node 20

---
 .github/workflows/benchmark.yml      | 2 +-
 .github/workflows/docs-check.yml     | 2 +-
 .github/workflows/docs.yml           | 2 +-
 .github/workflows/publish-dev.yml    | 2 +-
 .github/workflows/publish-rc.yml     | 2 +-
 .github/workflows/publish-stable.yml | 2 +-
 .github/workflows/test-browser.yml   | 2 +-
 .github/workflows/test-e2e.yml       | 2 +-
 .github/workflows/test-sim-merge.yml | 2 +-
 .github/workflows/test-sim.yml       | 2 +-
 .github/workflows/test-spec.yml      | 2 +-
 .github/workflows/test.yml           | 2 +-
 12 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 98842a38b026..d1de888472cf 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index 1556cd191b55..bad86bd201b9 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
       - name: Node.js version
         id: node
         run: echo "v8CppApiVersion=$(node --print "process.versions.modules")" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index cdceb49d808a..98b4ba2b56ee 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-dev.yml b/.github/workflows/publish-dev.yml
index a656f8562bf3..673b2ec6af92 100644
--- a/.github/workflows/publish-dev.yml
+++ b/.github/workflows/publish-dev.yml
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           registry-url: "https://registry.npmjs.org"
           check-latest: true
       - name: Node.js version
diff --git a/.github/workflows/publish-rc.yml b/.github/workflows/publish-rc.yml
index 005d2738b1c6..07106e1945f7 100644
--- a/.github/workflows/publish-rc.yml
+++ b/.github/workflows/publish-rc.yml
@@ -54,7 +54,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-stable.yml b/.github/workflows/publish-stable.yml
index 01e222d48e72..40f0cba82f78 100644
--- a/.github/workflows/publish-stable.yml
+++ b/.github/workflows/publish-stable.yml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-browser.yml b/.github/workflows/test-browser.yml
index c4c478b53a07..c8854c1896aa 100644
--- a/.github/workflows/test-browser.yml
+++ b/.github/workflows/test-browser.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [18]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index 25d49c64ad01..d76910185489 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [18]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-sim-merge.yml b/.github/workflows/test-sim-merge.yml
index a47a2a07a5a1..60cf84560766 100644
--- a/.github/workflows/test-sim-merge.yml
+++ b/.github/workflows/test-sim-merge.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index 74f19be3af99..1da1959a8072 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index eb17c2e2babf..58a80543303f 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 22bef8d6c10a..b95fb6a44794 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [20]
+        node: [18]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3

From 3f6dd7703cbbb2fee50ecc202eda46edf4936a67 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Fri, 14 Jul 2023 16:00:31 -0400
Subject: [PATCH 17/25] Revert "skip tests that break in CI"

This reverts commit d296b2f1a280189761bb6175343a43362010f881.
---
 packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
index cd15ebd97006..9ab0068c06a0 100644
--- a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
+++ b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
@@ -35,14 +35,12 @@ describe("eth1 / jsonRpcHttpClient", function () {
       url: `https://${randomHex}.infura.io`,
       error: "getaddrinfo ENOTFOUND",
     },
-    /*
     {
       id: "Bad port",
       url: `http://localhost:${port + 1}`,
       requestListener: (req, res) => res.end(),
       error: "connect ECONNREFUSED",
     },
-    */
     {
       id: "Not a JSON RPC endpoint",
       requestListener: (req, res) => {
@@ -194,7 +192,7 @@ describe("eth1 / jsonRpcHttpClient - with retries", function () {
     expect(retryCount).to.be.equal(retryAttempts, "ENOTFOUND should be retried before failing");
   });
 
-  it.skip("should retry ECONNREFUSED", async function () {
+  it("should retry ECONNREFUSED", async function () {
     let retryCount = 0;
 
     const url = `http://localhost:${port + 1}`;

From f716f640dd1717c5b883d396bc3eebbc91a95bc5 Mon Sep 17 00:00:00 2001
From: Nazar Hussain <nazarhussain@gmail.com>
Date: Sat, 15 Jul 2023 23:03:23 +0200
Subject: [PATCH 18/25] Fix the loader for few sim tests

---
 packages/cli/package.json | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/cli/package.json b/packages/cli/package.json
index 793bec1a57e9..c966fbfffd94 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -34,9 +34,9 @@
     "test:unit": "nyc --cache-dir .nyc_output/.cache -e .ts mocha 'test/unit/**/*.test.ts'",
     "test:e2e": "mocha --timeout 30000 'test/e2e/**/*.test.ts'",
     "test:sim:multifork": "LODESTAR_PRESET=minimal node --loader ts-node/esm test/sim/multi_fork.test.ts",
-    "test:sim:endpoints": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/endpoints.test.ts",
-    "test:sim:deneb": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/deneb.test.ts",
-    "test:sim:backup_eth_provider": "LODESTAR_PRESET=minimal node ts-node/esm test/sim/backup_eth_provider.test.ts",
+    "test:sim:endpoints": "LODESTAR_PRESET=minimal node --loader ts-node/esm test/sim/endpoints.test.ts",
+    "test:sim:deneb": "LODESTAR_PRESET=minimal node --loader ts-node/esm test/sim/deneb.test.ts",
+    "test:sim:backup_eth_provider": "LODESTAR_PRESET=minimal node --loader ts-node/esm test/sim/backup_eth_provider.test.ts",
     "test": "yarn test:unit && yarn test:e2e",
     "coverage": "codecov -F lodestar",
     "check-readme": "typescript-docs-verifier"

From 2e115d092ba0fe13eca2f5a22ac98c651824cadf Mon Sep 17 00:00:00 2001
From: Nazar Hussain <nazarhussain@gmail.com>
Date: Sat, 15 Jul 2023 23:25:22 +0200
Subject: [PATCH 19/25] Update CI node version to 20

---
 .github/workflows/test-browser.yml | 2 +-
 .github/workflows/test-e2e.yml     | 2 +-
 .github/workflows/test.yml         | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/test-browser.yml b/.github/workflows/test-browser.yml
index c8854c1896aa..c4c478b53a07 100644
--- a/.github/workflows/test-browser.yml
+++ b/.github/workflows/test-browser.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index d76910185489..25d49c64ad01 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b95fb6a44794..22bef8d6c10a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [18]
+        node: [20]
     steps:
       # <common-build> - Uses YAML anchors in the future
       - uses: actions/checkout@v3

From 49df2c23399cad2f64a7d04866ea75341c6b2632 Mon Sep 17 00:00:00 2001
From: Nazar Hussain <nazarhussain@gmail.com>
Date: Sun, 16 Jul 2023 00:23:18 +0200
Subject: [PATCH 20/25] Fix e2e test

---
 .../test/e2e/eth1/jsonRpcHttpClient.test.ts   | 30 ++++++++++++++-----
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
index 9ab0068c06a0..fdaeda8081cf 100644
--- a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
+++ b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
@@ -6,6 +6,10 @@ import {JsonRpcHttpClient} from "../../../src/eth1/provider/jsonRpcHttpClient.js
 import {getGoerliRpcUrl} from "../../testParams.js";
 import {RpcPayload} from "../../../src/eth1/interface.js";
 
+type FetchError = {
+  code: string;
+};
+
 describe("eth1 / jsonRpcHttpClient", function () {
   this.timeout("10 seconds");
 
@@ -22,6 +26,7 @@ describe("eth1 / jsonRpcHttpClient", function () {
     abort?: true;
     timeout?: number;
     error: any;
+    errorCode?: string;
   }[] = [
     // // NOTE: This DNS query is very expensive, all cache miss. So it can timeout the tests and cause false positives
     // {
@@ -39,7 +44,8 @@ describe("eth1 / jsonRpcHttpClient", function () {
       id: "Bad port",
       url: `http://localhost:${port + 1}`,
       requestListener: (req, res) => res.end(),
-      error: "connect ECONNREFUSED",
+      error: "",
+      errorCode: "ECONNREFUSED",
     },
     {
       id: "Not a JSON RPC endpoint",
@@ -122,7 +128,6 @@ describe("eth1 / jsonRpcHttpClient", function () {
 
   for (const testCase of testCases) {
     const {id, requestListener, abort, timeout} = testCase;
-    const error = testCase.error as Error;
     let {url, payload} = testCase;
 
     it(id, async function () {
@@ -148,7 +153,16 @@ describe("eth1 / jsonRpcHttpClient", function () {
       const controller = new AbortController();
       if (abort) setTimeout(() => controller.abort(), 50);
       const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-      await expect(eth1JsonRpcClient.fetch(payload, {timeout})).to.be.rejectedWith(error);
+
+      try {
+        await eth1JsonRpcClient.fetch(payload, {timeout});
+      } catch (error) {
+        if (testCase.errorCode) {
+          expect((error as FetchError).code).to.eql(testCase.errorCode);
+        } else {
+          expect((error as Error).message).includes(testCase.error);
+        }
+      }
     });
   }
 });
@@ -201,16 +215,18 @@ describe("eth1 / jsonRpcHttpClient - with retries", function () {
 
     const controller = new AbortController();
     const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-    await expect(
-      eth1JsonRpcClient.fetchWithRetries(payload, {
+    try {
+      await eth1JsonRpcClient.fetchWithRetries(payload, {
         retryAttempts,
         shouldRetry: () => {
           // using the shouldRetry function to keep tab of the retried requests
           retryCount++;
           return true;
         },
-      })
-    ).to.be.rejectedWith("connect ECONNREFUSED");
+      });
+    } catch (error) {
+      expect((error as FetchError).code).eql("ECONNREFUSED");
+    }
     expect(retryCount).to.be.equal(retryAttempts, "connect ECONNREFUSED should be retried before failing");
   });
 

From 2925e87583c50c0896f42b402cd2555d45dfbdde Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Sun, 16 Jul 2023 12:59:20 +0200
Subject: [PATCH 21/25] Remove try/catch from e2e test

---
 .../test/e2e/eth1/jsonRpcHttpClient.test.ts   | 25 ++++++++-----------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
index fdaeda8081cf..6de1cebf6fc8 100644
--- a/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
+++ b/packages/beacon-node/test/e2e/eth1/jsonRpcHttpClient.test.ts
@@ -153,16 +153,13 @@ describe("eth1 / jsonRpcHttpClient", function () {
       const controller = new AbortController();
       if (abort) setTimeout(() => controller.abort(), 50);
       const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-
-      try {
-        await eth1JsonRpcClient.fetch(payload, {timeout});
-      } catch (error) {
+      await expect(eth1JsonRpcClient.fetch(payload, {timeout})).to.be.rejected.then((error) => {
         if (testCase.errorCode) {
-          expect((error as FetchError).code).to.eql(testCase.errorCode);
+          expect((error as FetchError).code).to.be.equal(testCase.errorCode);
         } else {
-          expect((error as Error).message).includes(testCase.error);
+          expect((error as Error).message).to.include(testCase.error);
         }
-      }
+      });
     });
   }
 });
@@ -215,19 +212,19 @@ describe("eth1 / jsonRpcHttpClient - with retries", function () {
 
     const controller = new AbortController();
     const eth1JsonRpcClient = new JsonRpcHttpClient([url], {signal: controller.signal});
-    try {
-      await eth1JsonRpcClient.fetchWithRetries(payload, {
+    await expect(
+      eth1JsonRpcClient.fetchWithRetries(payload, {
         retryAttempts,
         shouldRetry: () => {
           // using the shouldRetry function to keep tab of the retried requests
           retryCount++;
           return true;
         },
-      });
-    } catch (error) {
-      expect((error as FetchError).code).eql("ECONNREFUSED");
-    }
-    expect(retryCount).to.be.equal(retryAttempts, "connect ECONNREFUSED should be retried before failing");
+      })
+    ).to.be.rejected.then((error) => {
+      expect((error as FetchError).code).to.be.equal("ECONNREFUSED");
+    });
+    expect(retryCount).to.be.equal(retryAttempts, "code ECONNREFUSED should be retried before failing");
   });
 
   it("should retry 404", async function () {

From 0190311719c800fed516477255958f70a00f2733 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Sun, 16 Jul 2023 13:03:20 +0200
Subject: [PATCH 22/25] Consistently use node 20 in CI

---
 .github/workflows/benchmark.yml      | 2 +-
 .github/workflows/docs-check.yml     | 2 +-
 .github/workflows/docs.yml           | 2 +-
 .github/workflows/publish-dev.yml    | 2 +-
 .github/workflows/publish-rc.yml     | 2 +-
 .github/workflows/publish-stable.yml | 2 +-
 .github/workflows/test-sim-merge.yml | 2 +-
 .github/workflows/test-sim.yml       | 2 +-
 .github/workflows/test-spec.yml      | 2 +-
 9 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index d1de888472cf..98842a38b026 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index bad86bd201b9..1556cd191b55 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
       - name: Node.js version
         id: node
         run: echo "v8CppApiVersion=$(node --print "process.versions.modules")" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 98b4ba2b56ee..cdceb49d808a 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-dev.yml b/.github/workflows/publish-dev.yml
index 673b2ec6af92..a656f8562bf3 100644
--- a/.github/workflows/publish-dev.yml
+++ b/.github/workflows/publish-dev.yml
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           registry-url: "https://registry.npmjs.org"
           check-latest: true
       - name: Node.js version
diff --git a/.github/workflows/publish-rc.yml b/.github/workflows/publish-rc.yml
index 07106e1945f7..005d2738b1c6 100644
--- a/.github/workflows/publish-rc.yml
+++ b/.github/workflows/publish-rc.yml
@@ -54,7 +54,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/publish-stable.yml b/.github/workflows/publish-stable.yml
index 40f0cba82f78..01e222d48e72 100644
--- a/.github/workflows/publish-stable.yml
+++ b/.github/workflows/publish-stable.yml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0 # Needs full depth for changelog generation
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim-merge.yml b/.github/workflows/test-sim-merge.yml
index 60cf84560766..a47a2a07a5a1 100644
--- a/.github/workflows/test-sim-merge.yml
+++ b/.github/workflows/test-sim-merge.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index 1da1959a8072..74f19be3af99 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node
diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index 58a80543303f..eb17c2e2babf 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
       - name: Node.js version
         id: node

From 7744f8f33466469a58e7638bbc7ba10038e92771 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Sun, 16 Jul 2023 13:04:06 +0200
Subject: [PATCH 23/25] Fix missed 18.x reference in types readme

---
 packages/types/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/types/README.md b/packages/types/README.md
index 0c668490bb18..9cd1f020a44d 100644
--- a/packages/types/README.md
+++ b/packages/types/README.md
@@ -4,7 +4,7 @@
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Eth Consensus Spec v1.1.10](https://img.shields.io/badge/ETH%20consensus--spec-1.1.10-blue)](https://github.com/ethereum/consensus-specs/releases/tag/v1.1.10)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 

From 3ae47c468936c444463509f5da198ce25a8a1ced Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Sun, 16 Jul 2023 13:07:08 +0200
Subject: [PATCH 24/25] Set node 20.x in readme

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index abfcb754e26d..9eeeb12ef43e 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 [![Ethereum Consensus Spec v1.1.10](https://img.shields.io/badge/ETH%20consensus--spec-1.1.10-blue)](https://github.com/ethereum/consensus-specs/releases/tag/v1.1.10)
 [![codecov](https://codecov.io/gh/ChainSafe/lodestar/branch/unstable/graph/badge.svg)](https://codecov.io/gh/ChainSafe/lodestar)
 ![ES Version](https://img.shields.io/badge/ES-2020-yellow)
-![Node Version](https://img.shields.io/badge/node-18.15.x-green)
+![Node Version](https://img.shields.io/badge/node-20.x-green)
 [![gitpoap badge](https://public-api.gitpoap.io/v1/repo/ChainSafe/lodestar/badge)](https://www.gitpoap.io/gh/ChainSafe/lodestar)
 
 [Lodestar](https://lodestar.chainsafe.io) is a TypeScript implementation of the [Ethereum Consensus specification](https://github.com/ethereum/consensus-specs) developed by [ChainSafe Systems](https://chainsafe.io).

From 18872876dd61793700710a9b47a2a80dfee920ab Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Sun, 16 Jul 2023 13:34:21 +0200
Subject: [PATCH 25/25] Use node 18 in sim tests

---
 .github/workflows/test-sim.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test-sim.yml b/.github/workflows/test-sim.yml
index 74f19be3af99..1da1959a8072 100644
--- a/.github/workflows/test-sim.yml
+++ b/.github/workflows/test-sim.yml
@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 18
           check-latest: true
       - name: Node.js version
         id: node