diff --git a/package-lock.json b/package-lock.json
index ef37ee8..8807ce5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2112,6 +2112,9 @@
         "url-template": "^2.0.8"
       }
     },
+    "@rondo/argparse": {
+      "version": "file:packages/argparse"
+    },
     "@rondo/client": {
       "version": "file:packages/client"
     },
diff --git a/packages/argparse/package.json b/packages/argparse/package.json
index e4ba783..3df6863 100644
--- a/packages/argparse/package.json
+++ b/packages/argparse/package.json
@@ -10,5 +10,5 @@
   "dependencies": {},
   "types": "lib/index.d.ts",
   "devDependencies": {},
-  "module": "lib/index.js"
+  "main": "lib/index.js"
 }
diff --git a/packages/scripts/src/commands/build.ts b/packages/scripts/src/commands/build.ts
index cfe5908..cc2985b 100644
--- a/packages/scripts/src/commands/build.ts
+++ b/packages/scripts/src/commands/build.ts
@@ -1,30 +1,30 @@
-import {run} from '../run'
-import {join} from 'path'
-import {findNodeModules} from '../modules'
 import * as fs from 'fs'
 import * as p from 'path'
+import {argparse} from '@rondo/argparse'
+import {findNodeModules} from '../modules'
+import {join} from 'path'
+import {run} from '../run'
 
 const tsc = 'ttsc'
 
-export async function build(path: string = '.') {
-  await run(tsc, ['--build', path])
-}
-
-export async function buildEsm(path: string = '.') {
-  await run(tsc, ['--build', join(path, 'tsconfig.esm.json')])
-}
-
-export async function watch(path: string = '.') {
-  await run(tsc, ['--build', '--watch', '--preserveWatchOutput',  path])
-}
-
-export async function watchEsm(path: string = '.') {
-  await run(tsc, [
-    '--build',
-    '--watch',
-    '--preserveWatchOutput',
-    join(path, 'tsconfig.esm.json'),
-  ])
+export async function build(...argv: string[]) {
+  const {esm, project, watch} = argparse({
+    project: {
+      type: 'string',
+      alias: 'p',
+      default: '.',
+    },
+    esm: {
+      type: 'boolean',
+    },
+    watch: {
+      type: 'boolean',
+      alias: 'w',
+    },
+  })(argv)
+  const path = esm ? join(project, 'tsconfig.esm.json') : project
+  const watchArgs = watch ? ['--watch', '--preserveWatchOutput'] : []
+  await run(tsc, ['--build', path, ...watchArgs])
 }
 
 export async function test(...args: string[]) {
@@ -90,7 +90,7 @@ export async function uglify(path: string = '.') {
 }
 
 export async function js(path: string = '.') {
-  await buildEsm(path)
+  await build(...['-p', path, '--esm'])
   await browserify(path)
   await uglify(path)
 }
@@ -134,9 +134,9 @@ export async function watchCss(path = '.') {
 }
 
 export async function frontend(path = '.') {
-  await buildEsm(path)
+  await build(...['-p', path, '--esm'])
   const promises = [
-    watchEsm(path),
+    build(...['-p', path, '--watch', '--esm']),
     watchJs(path),
     watchCss(path),
   ]
diff --git a/packages/scripts/src/index.ts b/packages/scripts/src/index.ts
index 94e560e..015e533 100644
--- a/packages/scripts/src/index.ts
+++ b/packages/scripts/src/index.ts
@@ -17,7 +17,7 @@ async function run(...argv: string[]) {
 if (typeof require !== 'undefined' && require.main === module) {
   run(...process.argv.slice(2))
   .catch(err => {
-    console.log('> ' + err.message)
+    console.log('> ' + err.stack)
     process.exit(1)
   })
 }
diff --git a/packages/scripts/tsconfig.esm.json b/packages/scripts/tsconfig.esm.json
index 915284d..8ebdd05 100644
--- a/packages/scripts/tsconfig.esm.json
+++ b/packages/scripts/tsconfig.esm.json
@@ -3,5 +3,7 @@
   "compilerOptions": {
     "outDir": "esm"
   },
-  "references": []
+  "references": [
+    {"path": "../argparse/tsconfig.esm.json"}
+  ]
 }
diff --git a/packages/scripts/tsconfig.json b/packages/scripts/tsconfig.json
index 94e864b..2680de9 100644
--- a/packages/scripts/tsconfig.json
+++ b/packages/scripts/tsconfig.json
@@ -5,5 +5,6 @@
     "rootDir": "src"
   },
   "references": [
+    {"path": "../argparse"}
   ]
 }