diff --git a/common/tools/hextobin/build.sh b/common/tools/hextobin/build.sh
index 702e6610f0..48c8542510 100755
--- a/common/tools/hextobin/build.sh
+++ b/common/tools/hextobin/build.sh
@@ -1,11 +1,4 @@
 #!/usr/bin/env bash
-#
-# Builds hextobin.js
-#
-
-# Exit on command failure and when using unset variables:
-set -eu
-
 ## START STANDARD BUILD SCRIPT INCLUDE
 # adjust relative paths as necessary
 THIS_SCRIPT="$(readlink -f "${BASH_SOURCE[0]}")"
@@ -23,20 +16,9 @@ builder_describe "Build hextobin" clean configure build
 builder_describe_outputs \
   configure /node_modules \
   build     build/index.js
+
 builder_parse "$@"
 
-if builder_start_action clean; then
-  npm run clean
-  builder_finish_action success clean
-fi
-
-if builder_start_action configure; then
-  verify_npm_setup
-  builder_finish_action success configure
-fi
-
-if builder_start_action build; then
-  npm run build
-  builder_finish_action success build
-fi
-
+builder_run_action clean      rm -rf build/ node_modules/
+builder_run_action configure  verify_npm_setup
+builder_run_action build      tsc --build
diff --git a/common/tools/hextobin/hextobin.ts b/common/tools/hextobin/hextobin.ts
index 503b18d4b1..e53e08ddbc 100644
--- a/common/tools/hextobin/hextobin.ts
+++ b/common/tools/hextobin/hextobin.ts
@@ -1,7 +1,6 @@
 #!/usr/bin/env node
-import * as fs from 'fs';
-import * as rd from 'readline';
 import * as program from 'commander';
+import hextobin from './index.js';
 
 let inputFilename: string = "";
 let outputFilename: string = "";
@@ -43,6 +42,4 @@ function exitDueToUsageError(message: string): never  {
   return process.exit(64); // SysExits.EX_USAGE
 }
 
-import hextobin from './index';
-
 hextobin(inputFilename, outputFilename, {silent: false});
diff --git a/common/tools/hextobin/package.json b/common/tools/hextobin/package.json
index 155f829759..2ebb0e9f4e 100644
--- a/common/tools/hextobin/package.json
+++ b/common/tools/hextobin/package.json
@@ -1,6 +1,8 @@
 {
   "name": "@keymanapp/hextobin",
   "description": "hextobin conversion tool",
+  "type": "module",
+  "private": true,
   "keywords": [
     "keyman",
     "hex",
@@ -14,14 +16,6 @@
   "bin": {
     "hextobin": "build/hextobin.js"
   },
-  "scripts": {
-    "clean": "tsc -b --clean",
-    "build": "tsc -b"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/keymanapp/keyman.git"
-  },
   "devDependencies": {
     "@types/node": "^18.7.18"
   }
diff --git a/common/tools/hextobin/tsconfig.json b/common/tools/hextobin/tsconfig.json
index e32831fe73..db0a65ae9d 100644
--- a/common/tools/hextobin/tsconfig.json
+++ b/common/tools/hextobin/tsconfig.json
@@ -1,19 +1,9 @@
 {
-    "extends": "../../../tsconfig-base.json",
-    "compilerOptions": {
-        "composite": true,
-        "declaration": true,
-        "target": "ES2020",
-        "module": "CommonJS",
-        "moduleResolution": "node",
-        "rootDir": ".",
-        "outDir": "build/",
-    },
-    "exclude": [
-        "node_modules"
-    ],
-    "files": [
-        "index.ts",
-        "hextobin.ts"
-    ]
+  "extends": "../../../tsconfig.esm-base.json",
+  "compilerOptions": {
+    "rootDir": ".",
+    "outDir": "build/"
+  },
+  "exclude": ["node_modules"],
+  "files": ["index.ts", "hextobin.ts"]
 }
diff --git a/tsconfig.esm.json b/tsconfig.esm.json
index c58550431a..47c0ef92e9 100644
--- a/tsconfig.esm.json
+++ b/tsconfig.esm.json
@@ -47,5 +47,6 @@
     // { "path": "./web/tools/sourcemap-root/tsconfig.json" },
     { "path": "./common/web/lm-message-types/" },
     { "path": "./common/web/lm-worker/" },
+    { "path": "./common/tools/hextobin/" }
   ]
 }
\ No newline at end of file