diff --git a/.eslintignore b/.eslintignore
index abd028a4e..491fc3597 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,4 +1,2 @@
 node_modules
 lib
-es2020
-commonjs
diff --git a/.eslintrc b/.eslintrc
index 72d9d9392..a497d99fb 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -2,7 +2,7 @@
   "root": true,
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
-    "project": "./packages/*/tsconfig.json"
+    "project": ["./packages/*/tsconfig.json", "./tsconfig.scripts.json"]
   },
   "plugins": ["@typescript-eslint", "eslint-plugin-tsdoc", "deprecation", "import"],
   "extends": [
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8d280fdf9..84aca7932 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -181,7 +181,7 @@ jobs:
         run: pnpm run build --ignore @temporalio/core-bridge
 
       - name: Publish to Verdaccio
-        run: node scripts/publish-to-verdaccio.js --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry
+        run: pnpm tsx scripts/publish-to-verdaccio.ts --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry
 
       - name: Install Temporal CLI
         uses: temporalio/setup-temporal@v0
@@ -222,8 +222,8 @@ jobs:
       # Sample 1: hello-world to local server
       - name: Instantiate sample project using verdaccio artifacts - Hello World
         run: |
-          node scripts/init-from-verdaccio.js --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/hello-world --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-hello-world
-          node scripts/test-example.js --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-hello-world"
+          pnpm tsx scripts/init-from-verdaccio.ts --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/hello-world --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-hello-world
+          pnpm tsx scripts/test-example.ts --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-hello-world"
 
       # Sample 2: hello-world-mtls to cloud server
       - name: Instantiate sample project using verdaccio artifacts - Hello World MTLS
@@ -233,9 +233,9 @@ jobs:
             exit 0
           fi
 
-          node scripts/create-certs-dir.js ${{ steps.tmp-dir.outputs.dir }}/certs
-          node scripts/init-from-verdaccio.js --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/hello-world-mtls --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-hello-world-mtls
-          node scripts/test-example.js --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-hello-world-mtls"
+          pnpm tsx scripts/create-certs-dir.ts ${{ steps.tmp-dir.outputs.dir }}/certs
+          pnpm tsx scripts/init-from-verdaccio.ts --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/hello-world-mtls --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-hello-world-mtls
+          pnpm tsx scripts/test-example.ts --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-hello-world-mtls"
         env:
           # These env vars are used by the hello-world-mtls sample
           TEMPORAL_ADDRESS: ${{ vars.TEMPORAL_CLIENT_NAMESPACE }}.tmprl.cloud:7233
@@ -255,8 +255,8 @@ jobs:
       # Sample 3: fetch-esm to local server
       - name: Instantiate sample project using verdaccio artifacts - Fetch ESM
         run: |
-          node scripts/init-from-verdaccio.js --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/fetch-esm --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-fetch-esm
-          node scripts/test-example.js --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-fetch-esm" --script-name workflow-local --expected-output "Hello World And Hello Wonderful Temporal!"
+          pnpm tsx scripts/init-from-verdaccio.ts --registry-dir ${{ steps.tmp-dir.outputs.dir }}/npm-registry --sample https://github.com/temporalio/samples-typescript/tree/main/fetch-esm --target-dir ${{ steps.tmp-dir.outputs.dir }}/sample-fetch-esm
+          pnpm tsx scripts/test-example.ts --work-dir "${{ steps.tmp-dir.outputs.dir }}/sample-fetch-esm" --script-name workflow-local --expected-output "Hello World And Hello Wonderful Temporal!"
 
       # End samples
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 921cc7e54..023a99e11 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -181,7 +181,7 @@ jobs:
         run: pnpm run build --ignore @temporalio/core-bridge
 
       - name: Publish to Verdaccio
-        run: node scripts/publish-to-verdaccio.js --registry-dir ./tmp/registry
+        run: pnpm tsx scripts/publish-to-verdaccio.ts --registry-dir ./tmp/registry
 
       - name: Save Verdaccio repo artifact
         uses: actions/upload-artifact@v4
@@ -250,7 +250,7 @@ jobs:
 
       # Note: here, `npx create` fails on windows if shell is bash.
       - name: Instantiate sample project using verdaccio artifacts
-        run: node scripts/init-from-verdaccio.js --registry-dir ./tmp/registry --sample ${{ matrix.sample }} --target-dir ${{ runner.temp }}/example
+        run: pnpm tsx scripts/init-from-verdaccio.ts --registry-dir ./tmp/registry --sample ${{ matrix.sample }} --target-dir ${{ runner.temp }}/example
 
       - name: Install Temporal CLI
         if: matrix.server == 'cli'
@@ -269,7 +269,7 @@ jobs:
         # We write the certs to disk because it serves the sample. Written into /tmp/temporal-certs
       - name: Create certs dir
         shell: bash
-        run: node scripts/create-certs-dir.js "${{ runner.temp }}/certs"
+        run: pnpm tsx scripts/create-certs-dir.ts "${{ runner.temp }}/certs"
         if: matrix.server == 'cloud'
         env:
           # These env vars are used by the hello-world-mtls sample
@@ -279,14 +279,14 @@ jobs:
           TEMPORAL_CLIENT_KEY: ${{ secrets.TEMPORAL_CLIENT_KEY }}
 
       - name: Test run a workflow (non-cloud)
-        run: node scripts/test-example.js --work-dir "${{ runner.temp }}/example"
+        run: pnpm tsx scripts/test-example.ts --work-dir "${{ runner.temp }}/example"
         shell: bash
         if: matrix.server == 'cli'
 
       - name: Test run a workflow (cloud)
         if: matrix.server == 'cloud'
         # The required environment variables must be present for releases (this must be run from the official repo)
-        run: node scripts/test-example.js --work-dir "${{ runner.temp }}/example"
+        run: pnpm tsx scripts/test-example.ts --work-dir "${{ runner.temp }}/example"
         shell: bash
         env:
           # These env vars are used by the hello-world-mtls sample
diff --git a/.prettierignore b/.prettierignore
index 9d1a89b9e..d2ed9bae7 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -4,8 +4,6 @@ packages/core-bridge/target
 packages/core-bridge/bridge-macros/target
 sdk-core
 lib
-es2020
-commonjs
 .docusaurus
 packages/*/CHANGELOG.md
 packages/docs/docs/api
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 1dcff892a..6844b70cf 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -93,13 +93,10 @@ If building fails, resetting your environment may help:
 pnpm dlx lerna clean -y && pnpm install --frozen-lockfile
 ```
 
-If `pnpm install` fails in `@temporalio/core-bridge` on the command `node ./scripts/build.js`, you may
+If `pnpm install` fails in `@temporalio/core-bridge` on the command `pnpm tsx ./scripts/build.ts`, you may
 need to do `rustup update`.
 
-To update to the latest version of the Core SDK, run `git submodule update` followed by `npm run build` to recompile.
-
-> For cross compilation on MacOS follow [these instructions](https://github.com/temporalio/sdk-typescript/blob/main/docs/building.md)
-> (only required for publishing packages).
+To update to the latest version of the Core SDK, run `git submodule update` followed by `pnpm run build` to recompile.
 
 ## Development
 
@@ -135,14 +132,17 @@ To replicate the `test-npm-init` CI test locally, you can start with the below s
 > If you've run `npx @temporalio/create` before, you may need to delete the version of the package that's stored in `~/.npm/_npx/`.
 
 ```
-rm -rf /tmp/registry
 pnpm install --frozen-lockfile
 pnpm run rebuild
-node scripts/publish-to-verdaccio.js --registry-dir /tmp/registry
-node scripts/init-from-verdaccio.js --registry-dir /tmp/registry --sample hello-world
-cd /tmp/registry/example
-npm run build
-node ~/path-to/sdk-typescript/scripts/test-example.js --work-dir /tmp/registry/example
+
+TMP_DIR=$( mktemp -d )
+
+pnpm tsx scripts/publish-to-verdaccio.ts --registry-dir "$TMP_DIR"
+pnpm tsx scripts/init-from-verdaccio.ts --registry-dir "$TMP_DIR" --sample hello-world
+
+cd "$TMP_DIR/example"
+pnpm run build
+pnpm tsx scripts/test-example.ts --work-dir "$TMP_DIR/example"
 ```
 
 ### Style Guide
@@ -195,7 +195,9 @@ To install both tools: `npm i -g npm-check npm-check-updates`.
 
 ## Publishing
 
-First, follow the instructions in [docs/building.md](docs/building.md).
+First, download the latest native artifacts from GitHub Actions.
+
+Then run the following commands:
 
 ```sh
 cargo install git-cliff
@@ -249,7 +251,7 @@ ls packages/core-bridge/releases/
 pnpm exec lerna version patch --force-publish='*' # or major|minor|etc, or leave out to be prompted. either way, you get a confirmation dialog.
 
 git checkout -B fix-deps
-node scripts/prepublish.mjs
+pnpm tsx scripts/prepublish.ts
 git commit -am 'Fix dependencies'
 pnpm exec lerna publish from-package # add `--dist-tag next` for pre-release versions
 git checkout -
diff --git a/docs/building.md b/docs/building.md
deleted file mode 100644
index 81181ac2a..000000000
--- a/docs/building.md
+++ /dev/null
@@ -1,32 +0,0 @@
-## Building `temporal_sdk_typescript_bridge`
-
-`temporal_sdk_typescript_bridge` is a native Node.js module written in Rust using [neon](https://neon-bindings.com/).
-One of the advantages of using Rust is that it's easy to cross compile to various platforms and architectures.
-
-By using Node.js' `n-api` we get a binary which _should_ work on all supported Node versions thanks to `n-api`'s [ABI stability](https://nodejs.org/en/docs/guides/abi-stability/).
-
-### Prerequisites for M1 Macs
-
-1. Install rosetta with `softwareupdate --install-rosetta`
-1. Make sure you have brew under Rosetta alongside your M1 brew intallation<br/>
-   See: https://github.com/Homebrew/brew/issues/9173<br/>
-   `arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"`
-
-### Setting up a Rust cross-compilation MacOS build environment
-
-1. Download [rustup](https://rustup.rs/).
-1. Run `rustup target add x86_64-apple-darwin` - if you're using a mac with an M1 chip
-1. Run `rustup target add aarch64-apple-darwin` - if you're using a mac with an Intel chip<br/>
-   **NOTE:** you can only compile for aarch64 if you have MacOS Big Sur or later
-1. Run `rustup target add x86_64-pc-windows-gnu`
-1. Run `rustup target add x86_64-unknown-linux-gnu`
-1. Run `rustup target add aarch64-unknown-linux-gnu`
-1. Run `brew tap messense/macos-cross-toolchains`
-1. Run `brew install x86_64-unknown-linux-gnu` to enable Linux x86_64 compilation
-1. Run `brew install aarch64-unknown-linux-gnu` to enable Linux aarch64 compilation
-1. Run `brew install mingw-w64` to enable Windows compilation on Intel Macs<br/>
-   Or `arch -x86_64 /usr/local/bin/brew install mingw-w64` on M1 Macs
-1. Configure cargo for the Windows and Linux build targets
-   `cp etc/mac-cargo-config.toml ~/.cargo/config.toml`
-1. Install the project's dependencies with `NPM_CONFIG_FOREGROUND_SCRIPTS=true npm ci` if you haven't already
-1. Build the the bridge with `CC_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnu-gcc CC_x86_64_unknown_linux_gnu=x86_64-unknown-linux-gnu-gcc npx lerna run --stream build-rust -- --target all`
diff --git a/etc/mac-cargo-config.toml b/etc/mac-cargo-config.toml
deleted file mode 100644
index ccbdd9a1b..000000000
--- a/etc/mac-cargo-config.toml
+++ /dev/null
@@ -1,7 +0,0 @@
-# Copy this file to ~/.cargo/config.toml in order to cross-compile for Linux and Windows
-[target.x86_64-unknown-linux-gnu]
-linker = "x86_64-linux-gnu-gcc"
-[target.aarch64-unknown-linux-gnu]
-linker = "aarch64-linux-gnu-gcc"
-[target.x86_64-pc-windows-gnu]
-linker = "/usr/local/bin/x86_64-w64-mingw32-gcc"
diff --git a/package.json b/package.json
index adc8273f5..6c9e8725b 100644
--- a/package.json
+++ b/package.json
@@ -24,17 +24,16 @@
     "rebuild": "pnpm run clean && pnpm run build",
     "build": "lerna run --stream build",
     "build.watch": "pnpm run build:protos && tsc --build --watch packages/*/tsconfig.json",
-    "build:protos": "node ./packages/proto/scripts/compile-proto.js",
+    "build:protos": "tsx ./packages/proto/scripts/compile-proto.ts",
     "test": "lerna run --stream test",
     "test.watch": "lerna run --stream test.watch",
     "ci-stress": "node ./packages/test/lib/load/run-all-stress-ci-scenarios.js",
     "ci-nightly": "node ./packages/test/lib/load/run-all-nightly-scenarios.js",
-    "wait-namespace": "node ./scripts/wait-on-temporal.mjs",
     "lint": "eslint packages/*/src --ext .ts --no-error-on-unmatched-pattern --fix && prettier --write . && lerna run --no-bail --stream lint",
     "lint.check": "eslint packages/*/src --ext .ts --no-error-on-unmatched-pattern && prettier --end-of-line auto --check .  && lerna run --no-bail --stream lint.check",
     "lint.prune": "ts-prune --error -p tsconfig.prune.json --ignore \"used in module\" --skip \".d.ts\"",
     "format": "prettier --write . && lerna run --no-bail --stream format",
-    "clean": "node ./scripts/clean.mjs",
+    "clean": "tsx ./scripts/clean.ts",
     "docs": "cd packages/docs && pnpm run maybe-install-deps-and-build-docs",
     "ava": "pnpm -C packages/test exec ava"
   },
@@ -80,6 +79,7 @@
     "lerna": "^8.2.4",
     "prettier": "^3.1.1",
     "ts-prune": "^0.10.3",
+    "tsx": "^4.20.6",
     "typescript": "^5.6.3",
     "verdaccio": "^6.2.2"
   },
diff --git a/packages/core-bridge/package.json b/packages/core-bridge/package.json
index 2537e193b..0967aef1d 100644
--- a/packages/core-bridge/package.json
+++ b/packages/core-bridge/package.json
@@ -5,10 +5,9 @@
   "main": "index.js",
   "types": "lib/index.d.ts",
   "scripts": {
-    "build-rust": "node ./scripts/build.js --force",
+    "build-rust": "tsx ./scripts/build.ts --force",
     "build": "pnpm run build-rust",
     "build-rust-release": "pnpm run build-rust --release",
-    "install": "node ./scripts/build.js",
     "format": "cargo fmt",
     "lint": "cargo clippy --fix --allow-staged",
     "lint.check": "cargo clippy"
@@ -23,10 +22,12 @@
   "license": "MIT",
   "dependencies": {
     "@grpc/grpc-js": "^1.12.4",
-    "@temporalio/common": "workspace:*",
+    "@temporalio/common": "workspace:*"
+  },
+  "devDependencies": {
     "arg": "^5.0.2",
-    "cargo-cp-artifact": "^0.1.8",
-    "which": "^4.0.0"
+    "cargo-cp-artifact": "^0.1.9",
+    "tsx": "^4.20.6"
   },
   "bugs": {
     "url": "https://github.com/temporalio/sdk-typescript/issues"
diff --git a/packages/core-bridge/scripts/build.js b/packages/core-bridge/scripts/build.ts
similarity index 79%
rename from packages/core-bridge/scripts/build.js
rename to packages/core-bridge/scripts/build.ts
index a6271fcb7..6e2e2eb75 100644
--- a/packages/core-bridge/scripts/build.js
+++ b/packages/core-bridge/scripts/build.ts
@@ -1,10 +1,9 @@
-const path = require('path');
-const arg = require('arg');
-const fs = require('fs');
-const which = require('which');
-const { spawnSync } = require('child_process');
-const { version } = require('../package.json');
-const { targets, getPrebuiltPath, getPrebuiltTargetName, PrebuildError } = require('../common');
+import * as path from 'node:path';
+import * as fs from 'node:fs';
+import arg from 'arg';
+import cargoCpArtifact from 'cargo-cp-artifact';
+import { version } from '../package.json';
+import { targets, getPrebuiltPath, getPrebuiltTargetName, PrebuildError } from '../common';
 
 process.chdir(path.resolve(__dirname, '..'));
 
@@ -54,7 +53,7 @@ if (unsupportedTargets.length) {
 const forceBuild = args['--force'];
 const buildRelease = args['--release'] || process.env.BUILD_CORE_RELEASE !== undefined;
 
-function compile(requestedTarget) {
+function compile(requestedTarget?: string) {
   if (!fs.existsSync('sdk-core/Cargo.toml')) {
     throw new Error('Missing sdk-core/Cargo.toml. Did you forget to run `git submodule update --init --recursive`?');
   }
@@ -83,16 +82,12 @@ function compile(requestedTarget) {
     ...(buildRelease ? ['--release'] : []),
     ...(target ? ['--target', target] : []),
   ];
-  const cmd = which.sync('cargo-cp-artifact');
 
-  console.log('Running', cmd, argv);
-  const { status, error } = spawnSync(cmd, argv, {
-    stdio: 'inherit',
-    shell: process.platform === 'win32',
+  console.log('Running cargo-cp-artifact', argv);
+
+  cargoCpArtifact(argv, {
+    env: process.env,
   });
-  if (status !== 0 || error) {
-    throw new Error(`Failed to build${target ? ' for ' + target : ''}: status code ${status}`, error);
-  }
 }
 
 if (requestedTargets.length > 0) {
diff --git a/packages/proto/package.json b/packages/proto/package.json
index 32207b8b2..1233214fe 100644
--- a/packages/proto/package.json
+++ b/packages/proto/package.json
@@ -10,7 +10,7 @@
     "lib/"
   ],
   "scripts": {
-    "build": "node ./scripts/compile-proto.js"
+    "build": "pnpm tsx ./scripts/compile-proto.ts"
   },
   "keywords": [
     "temporal",
diff --git a/packages/proto/scripts/compile-proto.js b/packages/proto/scripts/compile-proto.ts
similarity index 89%
rename from packages/proto/scripts/compile-proto.js
rename to packages/proto/scripts/compile-proto.ts
index ea86ef355..cb7acac82 100644
--- a/packages/proto/scripts/compile-proto.js
+++ b/packages/proto/scripts/compile-proto.ts
@@ -1,10 +1,10 @@
-const { rm, readFile, writeFile } = require('fs/promises');
-const { resolve } = require('path');
-const { promisify } = require('util');
-const glob = require('glob');
-const { statSync, mkdirSync } = require('fs');
-const pbjs = require('protobufjs-cli/pbjs');
-const pbts = require('protobufjs-cli/pbts');
+import { rm, readFile, writeFile } from 'node:fs/promises';
+import { statSync, mkdirSync } from 'node:fs';
+import { resolve } from 'node:path';
+import { promisify } from 'node:util';
+import * as glob from 'glob';
+import * as pbjs from 'protobufjs-cli/pbjs';
+import * as pbts from 'protobufjs-cli/pbts';
 
 const outputDir = resolve(__dirname, '../protos');
 const jsOutputFile = resolve(outputDir, 'json-module.js');
@@ -12,7 +12,7 @@ const tempFile = resolve(outputDir, 'temp.js');
 
 const protoBaseDir = resolve(__dirname, '../../core-bridge/sdk-core/crates/common/protos');
 
-function mtime(path) {
+function mtime(path: string) {
   try {
     return statSync(path).mtimeMs;
   } catch (err) {
@@ -23,7 +23,7 @@ function mtime(path) {
   }
 }
 
-async function compileProtos(dtsOutputFile, ...args) {
+async function compileProtos(dtsOutputFile: string, ...args: string[]) {
   const pbjsArgs = [
     ...['--wrap', 'commonjs'],
     '--force-long',
diff --git a/packages/test/package.json b/packages/test/package.json
index 06cf53dd5..c37a3f7c1 100644
--- a/packages/test/package.json
+++ b/packages/test/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "build": "pnpm run \"/^build:.*/\"",
     "build:ts": "tsc --build",
-    "build:protos": "node ./scripts/compile-proto.js",
+    "build:protos": "pnpm tsx ./scripts/compile-proto.ts",
     "test": "ava ./lib/test-*.js",
     "test.watch": "ava --watch ./lib/test-*.js"
   },
diff --git a/packages/test/scripts/compile-proto.js b/packages/test/scripts/compile-proto.ts
similarity index 81%
rename from packages/test/scripts/compile-proto.js
rename to packages/test/scripts/compile-proto.ts
index 6ef96474b..7badba7a5 100644
--- a/packages/test/scripts/compile-proto.js
+++ b/packages/test/scripts/compile-proto.ts
@@ -1,13 +1,13 @@
 // Script to do the equivalent of:
 // pbjs -t json-module -w commonjs -r test -o protos/json-module.js protos/*.proto
 // pbjs -t static-module protos/*.proto | pbts -o protos/root.d.ts -
-const { resolve } = require('path');
-const { promisify } = require('util');
-const glob = require('glob');
-const { statSync, mkdirsSync } = require('fs-extra');
-const { rm } = require('fs/promises');
-const pbjs = require('protobufjs-cli/pbjs');
-const pbts = require('protobufjs-cli/pbts');
+import { resolve } from 'node:path';
+import { promisify } from 'node:util';
+import { rm } from 'node:fs/promises';
+import * as glob from 'glob';
+import { statSync, mkdirsSync } from 'fs-extra';
+import * as pbjs from 'protobufjs-cli/pbjs';
+import * as pbts from 'protobufjs-cli/pbts';
 
 const outputDir = resolve(__dirname, '../protos');
 const moduleOutputFile = resolve(outputDir, 'json-module.js');
@@ -16,7 +16,7 @@ const tempFile = resolve(outputDir, 'temp.js');
 const protoBaseDir = resolve(__dirname, '../protos');
 const protoFiles = glob.sync('*.proto', { cwd: protoBaseDir, absolute: true, root: '' });
 
-function mtime(path) {
+function mtime(path: string) {
   try {
     return statSync(path).mtimeMs;
   } catch (err) {
@@ -27,7 +27,7 @@ function mtime(path) {
   }
 }
 
-async function compileProtos(outputFile, ...args) {
+async function compileProtos(outputFile: string, ...args: string[]) {
   const pbjsArgs = [
     ...args,
     '--wrap',
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index fad2defa0..13f68d5af 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -126,6 +126,9 @@ importers:
       ts-prune:
         specifier: ^0.10.3
         version: 0.10.3
+      tsx:
+        specifier: ^4.20.6
+        version: 4.20.6
       typescript:
         specifier: ^5.6.3
         version: 5.6.3
@@ -225,15 +228,16 @@ importers:
       '@temporalio/common':
         specifier: workspace:*
         version: link:../common
+    devDependencies:
       arg:
         specifier: ^5.0.2
         version: 5.0.2
       cargo-cp-artifact:
-        specifier: ^0.1.8
-        version: 0.1.8
-      which:
-        specifier: ^4.0.0
-        version: 4.0.0
+        specifier: ^0.1.9
+        version: 0.1.9
+      tsx:
+        specifier: ^4.20.6
+        version: 4.20.6
 
   packages/create-project:
     dependencies:
@@ -823,6 +827,162 @@ packages:
   '@emnapi/wasi-threads@1.0.4':
     resolution: {integrity: sha512-PJR+bOmMOPH8AtcTGAyYNiuJ3/Fcoj2XN/gBEWzDIKh254XO+mM9XoXHk5GNEhodxeMznbg7BlRojVbKN+gC6g==}
 
+  '@esbuild/aix-ppc64@0.25.12':
+    resolution: {integrity: sha512-Hhmwd6CInZ3dwpuGTF8fJG6yoWmsToE+vYgD4nytZVxcu1ulHpUQRAB1UJ8+N1Am3Mz4+xOByoQoSZf4D+CpkA==}
+    engines: {node: '>=18'}
+    cpu: [ppc64]
+    os: [aix]
+
+  '@esbuild/android-arm64@0.25.12':
+    resolution: {integrity: sha512-6AAmLG7zwD1Z159jCKPvAxZd4y/VTO0VkprYy+3N2FtJ8+BQWFXU+OxARIwA46c5tdD9SsKGZ/1ocqBS/gAKHg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [android]
+
+  '@esbuild/android-arm@0.25.12':
+    resolution: {integrity: sha512-VJ+sKvNA/GE7Ccacc9Cha7bpS8nyzVv0jdVgwNDaR4gDMC/2TTRc33Ip8qrNYUcpkOHUT5OZ0bUcNNVZQ9RLlg==}
+    engines: {node: '>=18'}
+    cpu: [arm]
+    os: [android]
+
+  '@esbuild/android-x64@0.25.12':
+    resolution: {integrity: sha512-5jbb+2hhDHx5phYR2By8GTWEzn6I9UqR11Kwf22iKbNpYrsmRB18aX/9ivc5cabcUiAT/wM+YIZ6SG9QO6a8kg==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [android]
+
+  '@esbuild/darwin-arm64@0.25.12':
+    resolution: {integrity: sha512-N3zl+lxHCifgIlcMUP5016ESkeQjLj/959RxxNYIthIg+CQHInujFuXeWbWMgnTo4cp5XVHqFPmpyu9J65C1Yg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@esbuild/darwin-x64@0.25.12':
+    resolution: {integrity: sha512-HQ9ka4Kx21qHXwtlTUVbKJOAnmG1ipXhdWTmNXiPzPfWKpXqASVcWdnf2bnL73wgjNrFXAa3yYvBSd9pzfEIpA==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [darwin]
+
+  '@esbuild/freebsd-arm64@0.25.12':
+    resolution: {integrity: sha512-gA0Bx759+7Jve03K1S0vkOu5Lg/85dou3EseOGUes8flVOGxbhDDh/iZaoek11Y8mtyKPGF3vP8XhnkDEAmzeg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [freebsd]
+
+  '@esbuild/freebsd-x64@0.25.12':
+    resolution: {integrity: sha512-TGbO26Yw2xsHzxtbVFGEXBFH0FRAP7gtcPE7P5yP7wGy7cXK2oO7RyOhL5NLiqTlBh47XhmIUXuGciXEqYFfBQ==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [freebsd]
+
+  '@esbuild/linux-arm64@0.25.12':
+    resolution: {integrity: sha512-8bwX7a8FghIgrupcxb4aUmYDLp8pX06rGh5HqDT7bB+8Rdells6mHvrFHHW2JAOPZUbnjUpKTLg6ECyzvas2AQ==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [linux]
+
+  '@esbuild/linux-arm@0.25.12':
+    resolution: {integrity: sha512-lPDGyC1JPDou8kGcywY0YILzWlhhnRjdof3UlcoqYmS9El818LLfJJc3PXXgZHrHCAKs/Z2SeZtDJr5MrkxtOw==}
+    engines: {node: '>=18'}
+    cpu: [arm]
+    os: [linux]
+
+  '@esbuild/linux-ia32@0.25.12':
+    resolution: {integrity: sha512-0y9KrdVnbMM2/vG8KfU0byhUN+EFCny9+8g202gYqSSVMonbsCfLjUO+rCci7pM0WBEtz+oK/PIwHkzxkyharA==}
+    engines: {node: '>=18'}
+    cpu: [ia32]
+    os: [linux]
+
+  '@esbuild/linux-loong64@0.25.12':
+    resolution: {integrity: sha512-h///Lr5a9rib/v1GGqXVGzjL4TMvVTv+s1DPoxQdz7l/AYv6LDSxdIwzxkrPW438oUXiDtwM10o9PmwS/6Z0Ng==}
+    engines: {node: '>=18'}
+    cpu: [loong64]
+    os: [linux]
+
+  '@esbuild/linux-mips64el@0.25.12':
+    resolution: {integrity: sha512-iyRrM1Pzy9GFMDLsXn1iHUm18nhKnNMWscjmp4+hpafcZjrr2WbT//d20xaGljXDBYHqRcl8HnxbX6uaA/eGVw==}
+    engines: {node: '>=18'}
+    cpu: [mips64el]
+    os: [linux]
+
+  '@esbuild/linux-ppc64@0.25.12':
+    resolution: {integrity: sha512-9meM/lRXxMi5PSUqEXRCtVjEZBGwB7P/D4yT8UG/mwIdze2aV4Vo6U5gD3+RsoHXKkHCfSxZKzmDssVlRj1QQA==}
+    engines: {node: '>=18'}
+    cpu: [ppc64]
+    os: [linux]
+
+  '@esbuild/linux-riscv64@0.25.12':
+    resolution: {integrity: sha512-Zr7KR4hgKUpWAwb1f3o5ygT04MzqVrGEGXGLnj15YQDJErYu/BGg+wmFlIDOdJp0PmB0lLvxFIOXZgFRrdjR0w==}
+    engines: {node: '>=18'}
+    cpu: [riscv64]
+    os: [linux]
+
+  '@esbuild/linux-s390x@0.25.12':
+    resolution: {integrity: sha512-MsKncOcgTNvdtiISc/jZs/Zf8d0cl/t3gYWX8J9ubBnVOwlk65UIEEvgBORTiljloIWnBzLs4qhzPkJcitIzIg==}
+    engines: {node: '>=18'}
+    cpu: [s390x]
+    os: [linux]
+
+  '@esbuild/linux-x64@0.25.12':
+    resolution: {integrity: sha512-uqZMTLr/zR/ed4jIGnwSLkaHmPjOjJvnm6TVVitAa08SLS9Z0VM8wIRx7gWbJB5/J54YuIMInDquWyYvQLZkgw==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [linux]
+
+  '@esbuild/netbsd-arm64@0.25.12':
+    resolution: {integrity: sha512-xXwcTq4GhRM7J9A8Gv5boanHhRa/Q9KLVmcyXHCTaM4wKfIpWkdXiMog/KsnxzJ0A1+nD+zoecuzqPmCRyBGjg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [netbsd]
+
+  '@esbuild/netbsd-x64@0.25.12':
+    resolution: {integrity: sha512-Ld5pTlzPy3YwGec4OuHh1aCVCRvOXdH8DgRjfDy/oumVovmuSzWfnSJg+VtakB9Cm0gxNO9BzWkj6mtO1FMXkQ==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [netbsd]
+
+  '@esbuild/openbsd-arm64@0.25.12':
+    resolution: {integrity: sha512-fF96T6KsBo/pkQI950FARU9apGNTSlZGsv1jZBAlcLL1MLjLNIWPBkj5NlSz8aAzYKg+eNqknrUJ24QBybeR5A==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [openbsd]
+
+  '@esbuild/openbsd-x64@0.25.12':
+    resolution: {integrity: sha512-MZyXUkZHjQxUvzK7rN8DJ3SRmrVrke8ZyRusHlP+kuwqTcfWLyqMOE3sScPPyeIXN/mDJIfGXvcMqCgYKekoQw==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [openbsd]
+
+  '@esbuild/openharmony-arm64@0.25.12':
+    resolution: {integrity: sha512-rm0YWsqUSRrjncSXGA7Zv78Nbnw4XL6/dzr20cyrQf7ZmRcsovpcRBdhD43Nuk3y7XIoW2OxMVvwuRvk9XdASg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [openharmony]
+
+  '@esbuild/sunos-x64@0.25.12':
+    resolution: {integrity: sha512-3wGSCDyuTHQUzt0nV7bocDy72r2lI33QL3gkDNGkod22EsYl04sMf0qLb8luNKTOmgF/eDEDP5BFNwoBKH441w==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [sunos]
+
+  '@esbuild/win32-arm64@0.25.12':
+    resolution: {integrity: sha512-rMmLrur64A7+DKlnSuwqUdRKyd3UE7oPJZmnljqEptesKM8wx9J8gx5u0+9Pq0fQQW8vqeKebwNXdfOyP+8Bsg==}
+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [win32]
+
+  '@esbuild/win32-ia32@0.25.12':
+    resolution: {integrity: sha512-HkqnmmBoCbCwxUKKNPBixiWDGCpQGVsrQfJoVGYLPT41XWF8lHuE5N6WhVia2n4o5QK5M4tYr21827fNhi4byQ==}
+    engines: {node: '>=18'}
+    cpu: [ia32]
+    os: [win32]
+
+  '@esbuild/win32-x64@0.25.12':
+    resolution: {integrity: sha512-alJC0uCZpTFrSL0CCDjcgleBXPnCrEAhTBILpeAp7M/OFgoqtAetfBzX0xM00MUsVVPpVjlPuMbREqnZCXaTnA==}
+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [win32]
+
   '@eslint-community/eslint-utils@4.4.0':
     resolution: {integrity: sha512-1/sA4dwrzBAyeUoQ6oxahHKmrZvsnLCg4RfxW3ZFGGmQkSNQPFNLV9CUEFQP1x9EYXHTo5p6xdhZM1Ne9p/AfA==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
@@ -2143,8 +2303,8 @@ packages:
   caniuse-lite@1.0.30001620:
     resolution: {integrity: sha512-WJvYsOjd1/BYUY6SNGUosK9DUidBPDTnOARHp3fSmFO1ekdxaY6nKRttEVrfMmYi80ctS0kz1wiWmm14fVc3ew==}
 
-  cargo-cp-artifact@0.1.8:
-    resolution: {integrity: sha512-3j4DaoTrsCD1MRkTF2Soacii0Nx7UHCce0EwUf4fHnggwiE4fbmF2AbnfzayR36DF8KGadfh7M/Yfy625kgPlA==}
+  cargo-cp-artifact@0.1.9:
+    resolution: {integrity: sha512-6F+UYzTaGB+awsTXg0uSJA1/b/B3DDJzpKVRu0UmyI7DmNeaAl2RFHuTGIN6fEgpadRxoXGb7gbC1xo4C3IdyA==}
     hasBin: true
 
   caseless@0.12.0:
@@ -2678,6 +2838,11 @@ packages:
     resolution: {integrity: sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==}
     engines: {node: '>= 0.4'}
 
+  esbuild@0.25.12:
+    resolution: {integrity: sha512-bbPBYYrtZbkt6Os6FiTLCTFxvq4tt3JKall1vRwshA3fdVztsLAatFaZobhkBC8/BrPetoa0oksYoKXoG4ryJg==}
+    engines: {node: '>=18'}
+    hasBin: true
+
   escalade@3.1.1:
     resolution: {integrity: sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==}
     engines: {node: '>=6'}
@@ -3053,6 +3218,9 @@ packages:
     resolution: {integrity: sha512-2EmdH1YvIQiZpltCNgkuiUnyukzxM/R6NDJX31Ke3BG1Nq5b0S2PhX59UKi9vZpPDQVdqn+1IcaAwnzTT5vCjw==}
     engines: {node: '>= 0.4'}
 
+  get-tsconfig@4.13.0:
+    resolution: {integrity: sha512-1VKTZJCwBrvbd+Wn3AOgQP/2Av+TfTCOlE4AcRJE72W1ksZXbAx8PPBR9RzgTeSPzlPMHrbANMH3LbltH73wxQ==}
+
   get-tsconfig@4.7.2:
     resolution: {integrity: sha512-wuMsz4leaj5hbGgg4IvDU0bqJagpftG5l5cXIAvo8uZrqn0NJqwtfupTN00VnkQJPcIRrxYrm1Ue24btpCha2A==}
 
@@ -5240,6 +5408,11 @@ packages:
     peerDependencies:
       typescript: '>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta'
 
+  tsx@4.20.6:
+    resolution: {integrity: sha512-ytQKuwgmrrkDTFP4LjR0ToE2nqgy886GpvRSpU0JAnrdBYppuY5rLkRUYPU1yCryb24SsKBTL/hlDQAEFVwtZg==}
+    engines: {node: '>=18.0.0'}
+    hasBin: true
+
   tuf-js@2.2.1:
     resolution: {integrity: sha512-GwIJau9XaA8nLVbUXsN3IlFi7WmQ48gBUrl3FTkkL/XLu/POhBzfmX9hd33FNMX1qAsfl6ozO1iMmW9NC8YniA==}
     engines: {node: ^16.14.0 || >=18.0.0}
@@ -5735,6 +5908,84 @@ snapshots:
     dependencies:
       tslib: 2.6.2
 
+  '@esbuild/aix-ppc64@0.25.12':
+    optional: true
+
+  '@esbuild/android-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/android-arm@0.25.12':
+    optional: true
+
+  '@esbuild/android-x64@0.25.12':
+    optional: true
+
+  '@esbuild/darwin-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/darwin-x64@0.25.12':
+    optional: true
+
+  '@esbuild/freebsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/freebsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-arm@0.25.12':
+    optional: true
+
+  '@esbuild/linux-ia32@0.25.12':
+    optional: true
+
+  '@esbuild/linux-loong64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-mips64el@0.25.12':
+    optional: true
+
+  '@esbuild/linux-ppc64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-riscv64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-s390x@0.25.12':
+    optional: true
+
+  '@esbuild/linux-x64@0.25.12':
+    optional: true
+
+  '@esbuild/netbsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/netbsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/openbsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/openbsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/openharmony-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/sunos-x64@0.25.12':
+    optional: true
+
+  '@esbuild/win32-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/win32-ia32@0.25.12':
+    optional: true
+
+  '@esbuild/win32-x64@0.25.12':
+    optional: true
+
   '@eslint-community/eslint-utils@4.4.0(eslint@8.57.1)':
     dependencies:
       eslint: 8.57.1
@@ -7436,7 +7687,7 @@ snapshots:
 
   caniuse-lite@1.0.30001620: {}
 
-  cargo-cp-artifact@0.1.8: {}
+  cargo-cp-artifact@0.1.9: {}
 
   caseless@0.12.0: {}
 
@@ -7971,6 +8222,35 @@ snapshots:
       is-date-object: 1.0.5
       is-symbol: 1.0.4
 
+  esbuild@0.25.12:
+    optionalDependencies:
+      '@esbuild/aix-ppc64': 0.25.12
+      '@esbuild/android-arm': 0.25.12
+      '@esbuild/android-arm64': 0.25.12
+      '@esbuild/android-x64': 0.25.12
+      '@esbuild/darwin-arm64': 0.25.12
+      '@esbuild/darwin-x64': 0.25.12
+      '@esbuild/freebsd-arm64': 0.25.12
+      '@esbuild/freebsd-x64': 0.25.12
+      '@esbuild/linux-arm': 0.25.12
+      '@esbuild/linux-arm64': 0.25.12
+      '@esbuild/linux-ia32': 0.25.12
+      '@esbuild/linux-loong64': 0.25.12
+      '@esbuild/linux-mips64el': 0.25.12
+      '@esbuild/linux-ppc64': 0.25.12
+      '@esbuild/linux-riscv64': 0.25.12
+      '@esbuild/linux-s390x': 0.25.12
+      '@esbuild/linux-x64': 0.25.12
+      '@esbuild/netbsd-arm64': 0.25.12
+      '@esbuild/netbsd-x64': 0.25.12
+      '@esbuild/openbsd-arm64': 0.25.12
+      '@esbuild/openbsd-x64': 0.25.12
+      '@esbuild/openharmony-arm64': 0.25.12
+      '@esbuild/sunos-x64': 0.25.12
+      '@esbuild/win32-arm64': 0.25.12
+      '@esbuild/win32-ia32': 0.25.12
+      '@esbuild/win32-x64': 0.25.12
+
   escalade@3.1.1: {}
 
   escape-html@1.0.3: {}
@@ -8431,6 +8711,10 @@ snapshots:
       call-bind: 1.0.7
       get-intrinsic: 1.3.0
 
+  get-tsconfig@4.13.0:
+    dependencies:
+      resolve-pkg-maps: 1.0.0
+
   get-tsconfig@4.7.2:
     dependencies:
       resolve-pkg-maps: 1.0.0
@@ -10871,6 +11155,13 @@ snapshots:
       tslib: 1.14.1
       typescript: 5.6.3
 
+  tsx@4.20.6:
+    dependencies:
+      esbuild: 0.25.12
+      get-tsconfig: 4.13.0
+    optionalDependencies:
+      fsevents: 2.3.3
+
   tuf-js@2.2.1:
     dependencies:
       '@tufjs/models': 2.0.1
diff --git a/scripts/clean.mjs b/scripts/clean.ts
similarity index 86%
rename from scripts/clean.mjs
rename to scripts/clean.ts
index f3ac880bb..b62653ab0 100644
--- a/scripts/clean.mjs
+++ b/scripts/clean.ts
@@ -1,11 +1,10 @@
 import { resolve } from 'node:path';
 import { readdirSync, readFileSync, rmSync } from 'node:fs';
 import { spawnSync } from 'node:child_process';
-import { URL, fileURLToPath } from 'node:url';
 import arg from 'arg';
-import JSON5 from 'json5';
+import { parse as parseJson5 } from 'json5';
 
-const packagesPath = fileURLToPath(new URL('../packages', import.meta.url));
+const packagesPath = resolve(__dirname, '../packages');
 
 function cleanTsGeneratedFiles() {
   for (const pkg of readdirSync(packagesPath)) {
@@ -14,9 +13,9 @@ function cleanTsGeneratedFiles() {
     let files;
     try {
       files = readdirSync(packagePath);
-    } catch (e) {
+    } catch (e: unknown) {
       // Skip over non-directory files like .DS_Store
-      if (e?.code === 'ENOTDIR') {
+      if ((e as NodeJS.ErrnoException)?.code === 'ENOTDIR') {
         continue;
       } else {
         throw e;
@@ -26,7 +25,7 @@ function cleanTsGeneratedFiles() {
     for (const file of files) {
       if (/^tsconfig(.*).json$/.test(file)) {
         const filePath = resolve(packagePath, file);
-        const tsconfig = JSON5.parse(readFileSync(filePath));
+        const tsconfig = parseJson5(readFileSync(filePath, 'utf8'));
         const { outDir } = tsconfig.compilerOptions;
         if (outDir) {
           const outPath = resolve(packagePath, outDir);
@@ -60,4 +59,3 @@ const components = new Set(only === undefined || only.length === 0 ? ['ts', 'pro
 if (components.has('ts')) cleanTsGeneratedFiles();
 if (components.has('proto')) cleanProtoGeneratedFiles();
 if (components.has('rust')) cleanCompiledRustFiles();
-if (components.has('test-server')) cleanTestServer();
diff --git a/scripts/create-certs-dir.js b/scripts/create-certs-dir.js
deleted file mode 100644
index f8f107055..000000000
--- a/scripts/create-certs-dir.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// Create /tmp/temporal-certs and populate it with certs from env vars.
-// Used in CI flow to store the Cloud certs from GH secret into local files for testing the mTLS sample.
-const fs = require('fs-extra');
-
-const targetDir = process.argv[2] ?? '/tmp/temporal-certs';
-
-fs.mkdirsSync(targetDir);
-fs.writeFileSync(`${targetDir}/client.pem`, process.env.TEMPORAL_CLIENT_CERT);
-fs.writeFileSync(`${targetDir}/client.key`, process.env.TEMPORAL_CLIENT_KEY);
diff --git a/scripts/create-certs-dir.ts b/scripts/create-certs-dir.ts
new file mode 100644
index 000000000..bd83b2048
--- /dev/null
+++ b/scripts/create-certs-dir.ts
@@ -0,0 +1,13 @@
+// Create /tmp/temporal-certs and populate it with certs from env vars.
+// Used in CI flow to store the Cloud certs from GH secret into local files for testing the mTLS sample.
+import { mkdirsSync, writeFileSync } from 'fs-extra';
+
+if (!process.env.TEMPORAL_CLIENT_CERT || !process.env.TEMPORAL_CLIENT_KEY) {
+  throw new Error('TEMPORAL_CLIENT_CERT and TEMPORAL_CLIENT_KEY must be set');
+}
+
+const targetDir = process.argv[2] ?? '/tmp/temporal-certs';
+
+mkdirsSync(targetDir);
+writeFileSync(`${targetDir}/client.pem`, process.env.TEMPORAL_CLIENT_CERT);
+writeFileSync(`${targetDir}/client.key`, process.env.TEMPORAL_CLIENT_KEY);
diff --git a/scripts/gen-docs.js b/scripts/gen-docs.js
deleted file mode 100644
index fecc8eefe..000000000
--- a/scripts/gen-docs.js
+++ /dev/null
@@ -1,50 +0,0 @@
-const path = require('path');
-const typedoc = require('typedoc');
-
-/// Generate docs for a single package.
-/// This may not run concurrently because it changes the directory to the package root
-async function genDocs(package = 'meta', outputDir) {
-  const root = path.resolve(__dirname, '../packages', package);
-  const oldpwd = process.cwd();
-  try {
-    process.chdir(root);
-
-    const app = new typedoc.Application();
-    app.options.addReader(new typedoc.TSConfigReader());
-
-    app.bootstrap({
-      tsconfig: 'tsconfig.json',
-      entryPoints: ['src/index.ts'],
-      excludePrivate: true,
-      excludeProtected: true,
-      hideGenerator: true,
-      disableSources: true,
-      hideBreadcrumbs: true,
-    });
-
-    const project = app.convert();
-
-    // Project may not have converted correctly
-    if (!project) {
-      throw new Error('Failed to convert app');
-    }
-
-    // Rendered docs
-    await app.generateDocs(project, outputDir);
-  } finally {
-    process.chdir(oldpwd);
-  }
-}
-
-async function main() {
-  const outputDir = process.argv[2];
-  if (!outputDir) {
-    throw new Error('Usage: gen-docs <outputDir>');
-  }
-  await genDocs('meta', outputDir);
-}
-
-main().catch((err) => {
-  console.error(err);
-  process.exit(1);
-});
diff --git a/scripts/init-from-verdaccio.js b/scripts/init-from-verdaccio.ts
similarity index 73%
rename from scripts/init-from-verdaccio.js
rename to scripts/init-from-verdaccio.ts
index 141ecb3b5..878197e9b 100644
--- a/scripts/init-from-verdaccio.js
+++ b/scripts/init-from-verdaccio.ts
@@ -1,14 +1,16 @@
-const { resolve, dirname } = require('path');
-const { writeFileSync } = require('fs');
-const { withRegistry, getArgs } = require('./registry');
-const { spawnNpx } = require('./utils');
+import { resolve, dirname } from 'node:path';
+import { writeFileSync } from 'node:fs';
+import { getArgs, withRegistry } from './registry';
+import { spawnNpx } from './utils';
+
+// Force samples to use the same version of @temporalio/* packages as the one
+// we are testing. This is required when testing against a pre-release version,
+// which would not be otherwise matched by specifier like ^1.8.0.
+// eslint-disable-next-line import/order
+import { version } from '../lerna.json';
 
 async function main() {
   const { registryDir, targetDir, initArgs } = await getArgs();
-  // Force samples to use the same version of @temporalio/* packages as the one
-  // we are testing. This is required when testing against a pre-release version,
-  // which would not be otherwise matched by specifier like ^1.8.0.
-  const { version } = require('../lerna.json');
 
   await withRegistry(registryDir, async () => {
     console.log('spawning npx @temporalio/create with args:', initArgs);
@@ -30,8 +32,6 @@ async function main() {
         [`@temporalio/create@${version}`, targetDir, '--no-git-init', '--sdk-version', version, ...initArgs],
         {
           stdio: 'inherit',
-          stdout: 'inherit',
-          stderr: 'inherit',
           cwd: dirname(targetDir),
           env: {
             ...process.env,
diff --git a/scripts/prepublish.mjs b/scripts/prepublish.mjs
deleted file mode 100644
index cea0f2f4c..000000000
--- a/scripts/prepublish.mjs
+++ /dev/null
@@ -1,24 +0,0 @@
-import fs from 'node:fs/promises';
-import path from 'node:path';
-import { URL, fileURLToPath } from 'node:url';
-
-const rootPath = fileURLToPath(new URL('..', import.meta.url));
-const packagesPath = path.join(rootPath, 'packages');
-const lernaJsonPath = path.join(rootPath, 'lerna.json');
-
-const { version } = JSON.parse(await fs.readFile(lernaJsonPath, 'utf8'));
-
-const packages = await fs.readdir(packagesPath);
-for (const dir of packages) {
-  const packageJsonPath = path.join(packagesPath, dir, 'package.json');
-  const packageJson = JSON.parse(await fs.readFile(packageJsonPath, 'utf8'));
-  for (const depType of ['dependencies', 'devDependencies', 'peerDependencies']) {
-    for (const dep of Object.keys(packageJson[depType] ?? {})) {
-      if (dep.startsWith('@temporalio/')) {
-        packageJson[depType][dep] = `${version}`;
-      }
-    }
-  }
-  const replacedContent = JSON.stringify(packageJson, null, 2);
-  await fs.writeFile(packageJsonPath, replacedContent + '\n');
-}
diff --git a/scripts/prepublish.ts b/scripts/prepublish.ts
new file mode 100644
index 000000000..641c75c4e
--- /dev/null
+++ b/scripts/prepublish.ts
@@ -0,0 +1,28 @@
+import fs from 'node:fs/promises';
+import path, { resolve } from 'node:path';
+import { version } from '../lerna.json';
+
+async function main() {
+  const rootPath = resolve(__dirname, '..');
+  const packagesPath = path.join(rootPath, 'packages');
+
+  const packages = await fs.readdir(packagesPath);
+  for (const dir of packages) {
+    const packageJsonPath = path.join(packagesPath, dir, 'package.json');
+    const packageJson = JSON.parse(await fs.readFile(packageJsonPath, 'utf8'));
+    for (const depType of ['dependencies', 'devDependencies', 'peerDependencies']) {
+      for (const dep of Object.keys(packageJson[depType] ?? {})) {
+        if (dep.startsWith('@temporalio/')) {
+          packageJson[depType][dep] = `${version}`;
+        }
+      }
+    }
+    const replacedContent = JSON.stringify(packageJson, null, 2);
+    await fs.writeFile(packageJsonPath, replacedContent + '\n');
+  }
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
diff --git a/scripts/publish-to-verdaccio.js b/scripts/publish-to-verdaccio.ts
similarity index 72%
rename from scripts/publish-to-verdaccio.js
rename to scripts/publish-to-verdaccio.ts
index 02a1624ca..4229ea6af 100644
--- a/scripts/publish-to-verdaccio.js
+++ b/scripts/publish-to-verdaccio.ts
@@ -1,14 +1,12 @@
-const { withRegistry, getArgs } = require('./registry');
-const { spawnNpx } = require('./utils');
+import { getArgs, withRegistry } from './registry';
+import { spawnNpx } from './utils';
 
-async function main() {
+async function main(): Promise<void> {
   const { registryDir } = await getArgs();
   await withRegistry(registryDir, async () => {
     try {
       await spawnNpx(['lerna', 'publish', 'from-package', '--yes', '--registry', 'http://127.0.0.1:4873/'], {
         stdio: 'inherit',
-        stdout: 'inherit',
-        stderr: 'inherit',
       });
     } catch (e) {
       console.error(e);
diff --git a/scripts/registry.js b/scripts/registry.ts
similarity index 65%
rename from scripts/registry.js
rename to scripts/registry.ts
index 63cc027b8..d6be0c458 100644
--- a/scripts/registry.js
+++ b/scripts/registry.ts
@@ -1,20 +1,26 @@
-const path = require('path');
-const { tmpdir } = require('os');
-const { mkdtemp } = require('fs-extra');
-const arg = require('arg');
-const { runServer } = require('verdaccio');
-const { mkdirSync } = require('fs');
+import path from 'node:path';
+import { tmpdir } from 'node:os';
+import { mkdirSync } from 'node:fs';
+import { mkdtemp } from 'fs-extra';
+import arg from 'arg';
+import { runServer } from 'verdaccio';
+
+interface VerdaccioServer {
+  listen: (port: number, callback: () => void) => void;
+  on: (event: string, listener: (...args: any[]) => void) => void;
+  close: () => Promise<void>;
+}
 
 class Registry {
-  constructor(app, workdir) {
-    this.app = app;
-    this.workdir = workdir;
-  }
+  constructor(
+    public readonly app: VerdaccioServer,
+    public readonly workdir: string
+  ) {}
 
-  static async create(workdir) {
+  static async create(workdir: string): Promise<Registry> {
     mkdirSync(workdir, { recursive: true });
 
-    const app = await runServer({
+    const app = (await runServer({
       self_path: workdir,
       storage: path.resolve(workdir, 'storage'),
 
@@ -36,9 +42,9 @@ class Registry {
       },
 
       max_body_size: '200mb',
-    });
+    })) as unknown as VerdaccioServer;
 
-    await new Promise((resolve, reject) => {
+    await new Promise<void>((resolve, reject) => {
       try {
         app.listen(4873, resolve);
         app.on('error', reject);
@@ -55,7 +61,7 @@ class Registry {
   }
 }
 
-async function withRegistry(testDir, fn) {
+export async function withRegistry(testDir: string, fn: () => Promise<void>): Promise<void> {
   console.log('Starting local registry');
   const registry = await Registry.create(testDir);
   try {
@@ -79,7 +85,7 @@ async function createTempRegistryDir() {
 /**
  * Parse and return command line arguments
  */
-async function getArgs() {
+export async function getArgs(): Promise<{ registryDir: string; targetDir: string; initArgs: string[] }> {
   const opts = arg(
     {
       '--registry-dir': String,
@@ -91,5 +97,3 @@ async function getArgs() {
   const targetDir = opts['--target-dir'] ?? path.join(registryDir, 'example');
   return { registryDir, targetDir, initArgs: opts._.length > 0 ? opts._ : [] };
 }
-
-module.exports = { getArgs, withRegistry };
diff --git a/scripts/test-example.js b/scripts/test-example.ts
similarity index 68%
rename from scripts/test-example.js
rename to scripts/test-example.ts
index 914d88a57..886f48c2a 100644
--- a/scripts/test-example.js
+++ b/scripts/test-example.ts
@@ -1,11 +1,11 @@
-const { spawn: spawnChild, spawnSync } = require('child_process');
-const arg = require('arg');
-const { shell, kill, sleep, waitOnChild } = require('./utils');
+import { ChildProcess, spawn, spawnSync } from 'node:child_process';
+import arg from 'arg';
+import { shell, kill, sleep, waitOnChild } from './utils';
 
 const npm = /^win/.test(process.platform) ? 'npm.cmd' : 'npm';
 
-function createWorker(workdir) {
-  return spawnChild(npm, ['start'], {
+export function createWorker(workdir: string): ChildProcess {
+  return spawn(npm, ['start'], {
     cwd: workdir,
     stdio: 'inherit',
     shell,
@@ -13,7 +13,7 @@ function createWorker(workdir) {
   });
 }
 
-async function withWorker(workdir, fn) {
+export async function withWorker(workdir: string, fn: () => Promise<void>): Promise<void> {
   console.log('Starting worker');
   const worker = createWorker(workdir);
   try {
@@ -23,7 +23,7 @@ async function withWorker(workdir, fn) {
   }
 }
 
-async function test(workdir, scriptName, expectedOutput) {
+export async function test(workdir: string, scriptName: string, expectedOutput: string): Promise<void> {
   const { status, output } = spawnSync(npm, ['run', scriptName], {
     cwd: workdir,
     shell,
@@ -33,12 +33,12 @@ async function test(workdir, scriptName, expectedOutput) {
   if (status !== 0) {
     throw new Error('Failed to run workflow');
   }
-  if (!output[1].includes(`${expectedOutput}\n`)) {
+  if (!output[1]?.includes(`${expectedOutput}\n`)) {
     throw new Error(`Invalid output: "${output[1]}"`);
   }
 }
 
-async function main() {
+async function main(): Promise<void> {
   const opts = arg({
     '--work-dir': String,
     '--script-name': String,
diff --git a/scripts/utils.js b/scripts/utils.ts
similarity index 61%
rename from scripts/utils.js
rename to scripts/utils.ts
index ce5ed0d65..515a81639 100644
--- a/scripts/utils.js
+++ b/scripts/utils.ts
@@ -1,33 +1,42 @@
-const { spawn } = require('child_process');
+import { ChildProcess, spawn, SpawnOptions } from 'node:child_process';
 
-class ChildProcessError extends Error {
-  constructor(message, code, signal) {
+export class ChildProcessError extends Error {
+  constructor(
+    message: string,
+    public readonly code: number | null,
+    public readonly signal: NodeJS.Signals | null
+  ) {
     super(message);
     this.name = 'ChildProcessError';
-    this.code = code;
-    this.signal = signal;
   }
 }
 
-const shell = /^win/.test(process.platform);
-const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
+export const shell = /^win/.test(process.platform);
 
-async function waitOnChild(child) {
+export async function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+export async function waitOnChild(child: ChildProcess): Promise<void> {
   return new Promise((resolve, reject) => {
-    child.on('exit', (code, signal) => {
+    child.on('exit', (code: number, signal: NodeJS.Signals) => {
       if (code === 0) {
         resolve();
       } else {
-        reject(new ChildProcessError('Process failed', code, signal));
+        reject(new ChildProcessError('Process failed', code, signal as NodeJS.Signals));
       }
     });
     child.on('error', reject);
   });
 }
 
-async function kill(child, signal = 'SIGINT') {
+export async function kill(child: ChildProcess, signal: NodeJS.Signals = 'SIGINT'): Promise<void> {
+  if (typeof child.pid !== 'number') {
+    throw new TypeError('Expected child with pid');
+  }
+
+  // -PID not supported on Windows
   if (process.platform === 'win32') {
-    // -PID not supported on Windows
     process.kill(child.pid, signal);
   } else {
     process.kill(-child.pid, signal);
@@ -35,7 +44,7 @@ async function kill(child, signal = 'SIGINT') {
 
   try {
     await waitOnChild(child);
-  } catch (err) {
+  } catch (err: unknown) {
     const signalNumber = getSignalNumber(signal);
 
     // Ignore the error if it simply indicates process termination due to the signal we just sent.
@@ -49,22 +58,20 @@ async function kill(child, signal = 'SIGINT') {
   }
 }
 
-function getSignalNumber(signal) {
+function getSignalNumber(signal: NodeJS.Signals): number {
   // We don't need any other signals for now, and probably never will, so no need to list them all.
   // But if any other signals ends up being needed, look at `man 3 signal` for the complete list.
   const SIGNAL_NUMBERS = {
     SIGINT: 2,
     SIGTERM: 15,
-  };
+  } as Record<NodeJS.Signals, number>;
 
   if (signal in SIGNAL_NUMBERS) return SIGNAL_NUMBERS[signal];
   throw new TypeError(`Unknown signal in getSignalNumber: '${signal}'. Please add a case for that signal.`);
 }
 
-async function spawnNpx(args, opts) {
+export async function spawnNpx(args: string[], opts: SpawnOptions): Promise<void> {
   const npx = /^win/.test(process.platform) ? 'npx.cmd' : 'npx';
   const npxArgs = ['--prefer-offline', '--timing=true', '--yes', '--', ...args];
   await waitOnChild(spawn(npx, npxArgs, { ...opts, shell }));
 }
-
-module.exports = { kill, spawnNpx, waitOnChild, ChildProcessError, shell, sleep };
diff --git a/scripts/wait-on-temporal.mjs b/scripts/wait-on-temporal.mjs
deleted file mode 100644
index f729e952a..000000000
--- a/scripts/wait-on-temporal.mjs
+++ /dev/null
@@ -1,43 +0,0 @@
-// This is an ESM and has the mjs extension so it can be run in commonjs and ESM projects alike
-import { Connection } from '@temporalio/client';
-
-const maxAttempts = 100;
-const retryIntervalSecs = 1;
-const runId = '26323773-ab30-4442-9a20-c5640b31a7a3';
-
-// Starting with 1.20, we should no longer need to wait on namespace
-// TODO: Remove all of this once we are confident that this is no longer required
-try {
-  for (let attempt = 1; attempt <= maxAttempts; ++attempt) {
-    try {
-      const client = await Connection.connect();
-      // Workaround for describeNamespace returning even though namespace is not registered yet
-      // See: https://github.com/temporalio/temporal/issues/1336
-      await client.workflowService.getWorkflowExecutionHistory({
-        namespace: 'default',
-        execution: { workflowId: 'fake', runId },
-      });
-    } catch (err) {
-      if (
-        err.details &&
-        (err.details.includes('workflow history not found') ||
-          err.details.includes('Workflow executionsRow not found') ||
-          err.details.includes('operation GetCurrentExecution') ||
-          err.details.includes('operation GetWorkflowExecution encountered not found') ||
-          err.details.includes(runId))
-      ) {
-        break;
-      }
-      if (attempt === maxAttempts) {
-        throw err;
-      }
-      await new Promise((resolve) => setTimeout(resolve, retryIntervalSecs * 1000));
-    }
-  }
-} catch (err) {
-  console.error('Failed to connect', err);
-  process.exit(1);
-}
-
-console.log('Connected');
-process.exit(0);
diff --git a/tsconfig.scripts.json b/tsconfig.scripts.json
new file mode 100644
index 000000000..1a7fb6d2a
--- /dev/null
+++ b/tsconfig.scripts.json
@@ -0,0 +1,12 @@
+{
+  "extends": "@tsconfig/node18/tsconfig.json",
+  "compilerOptions": {
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "types": ["node"],
+    "rootDir": "./",
+    "noEmit": true,
+    "resolveJsonModule": true
+  },
+  "include": ["./scripts/*.ts", "./packages/*/scripts/*.ts"]
+}