diff --git a/packages/scripts/src/scripts/exportDir.ts b/packages/scripts/src/scripts/exportDir.ts
index ffbdd4f..5bcde0b 100644
--- a/packages/scripts/src/scripts/exportDir.ts
+++ b/packages/scripts/src/scripts/exportDir.ts
@@ -1,6 +1,7 @@
 import * as fs from 'fs'
 import {argparse, arg} from '@rondo.dev/argparse'
 import {join} from 'path'
+import {info} from '../log'
 
 export async function exportDir(...argv: string[]) {
   const args = argparse({
@@ -22,7 +23,6 @@ export async function exportDir(...argv: string[]) {
   .map(item => `export * from './${item}'\n`)
   .reduce((str, item) => str += item, '')
 
-  // tslint:disable-next-line
-  console.log('Writing to %s', out)
+  info('Writing to %s', out)
   fs.writeFileSync(join(dir, 'index.ts'), index)
 }
diff --git a/packages/scripts/src/scripts/index.ts b/packages/scripts/src/scripts/index.ts
index 8d043a8..4238c24 100644
--- a/packages/scripts/src/scripts/index.ts
+++ b/packages/scripts/src/scripts/index.ts
@@ -2,3 +2,4 @@ export * from './add'
 export * from './build'
 export * from './exportDir'
 export * from './intergen'
+export * from './syncEsm'
diff --git a/packages/scripts/src/scripts/syncEsm.ts b/packages/scripts/src/scripts/syncEsm.ts
new file mode 100644
index 0000000..f9616c2
--- /dev/null
+++ b/packages/scripts/src/scripts/syncEsm.ts
@@ -0,0 +1,59 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import {argparse, arg} from '@rondo.dev/argparse'
+import {info} from '../log'
+
+const TSCONFIG_FILENAME = 'tsconfig.json'
+const TSCONFIG_ESM_FILENAME = 'tsconfig.esm.json'
+const PKG_DIRNAME = 'packages'
+
+interface IRef {
+  path: string
+}
+
+export async function syncEsm(...argv: string[]) {
+  const args = argparse({
+    packages: arg('string', {default: 'packages/', positional: true}),
+    help: arg('boolean', {alias: 'h'}),
+  })
+  .parse(argv)
+
+  const pkgDir = args.packages
+
+  const projects = fs.readdirSync(pkgDir)
+  .filter(file => {
+    const stat = fs.lstatSync(path.join(pkgDir, file))
+    return stat.isDirectory()
+  })
+  .map(file => path.join(pkgDir, file, TSCONFIG_FILENAME))
+  .filter(file => fs.existsSync(file))
+  .forEach(file => {
+    const tsconfig = JSON.parse(fs.readFileSync(file, 'utf8'))
+    const references = ((tsconfig.references || []) as IRef[])
+    .map(ref => ({
+      ...ref,
+      path: path.join(ref.path, TSCONFIG_ESM_FILENAME),
+    }))
+
+    const tsconfigEsm = {
+      extends: `./${TSCONFIG_FILENAME}`,
+      compilerOptions: {
+        outDir: 'esm',
+      },
+      references,
+    }
+
+    const dirname = path.dirname(file)
+    const esmFile = path.join(dirname, TSCONFIG_ESM_FILENAME)
+    info('Writing %s', esmFile)
+    fs.writeFileSync(esmFile, JSON.stringify(tsconfigEsm, null, '  '))
+
+    const pkgFile = path.join(dirname, 'package.json')
+    const pkg = JSON.parse(fs.readFileSync(pkgFile, 'utf8'))
+    pkg.module = 'lib/index.js'
+    pkg.module = pkg.main ? pkg.main.replace(/^lib/, 'esm') : 'lib/index.js'
+
+    info('Writing %s', pkgFile)
+    fs.writeFileSync(pkgFile, JSON.stringify(pkg, null, '  '))
+  })
+}
diff --git a/scripts/sync-esm-config.js b/scripts/sync-esm-config.js
deleted file mode 100755
index fab3587..0000000
--- a/scripts/sync-esm-config.js
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env node
-const fs = require('fs')
-const path = require('path')
-
-const TSCONFIG_FILENAME = 'tsconfig.json'
-const TSCONFIG_ESM_FILENAME = 'tsconfig.esm.json'
-const PKG_DIRNAME = 'packages'
-
-const projectRoot = path.relative(
-  process.cwd(), path.resolve(__dirname, '..'))
-const pkgDir = path.join(projectRoot, PKG_DIRNAME)
-
-const projects = fs.readdirSync(pkgDir)
-.filter(file => {
-  const stat = fs.lstatSync(path.join(pkgDir, file))
-  return stat.isDirectory()
-})
-.map(file => path.join(pkgDir, file, TSCONFIG_FILENAME))
-.filter(file => fs.existsSync(file))
-.forEach(file => {
-  const tsconfig = JSON.parse(fs.readFileSync(file, 'utf8'))
-  const references = (tsconfig.references || [])
-  .map(ref => ({
-    ...ref,
-    path: path.join(ref.path, TSCONFIG_ESM_FILENAME),
-  }))
-
-  const tsconfigEsm = {
-    extends: `./${TSCONFIG_FILENAME}`,
-    compilerOptions: {
-      "outDir": "esm",
-    },
-    references,
-  }
-
-  const dirname = path.dirname(file)
-  const esmFile = path.join(dirname, TSCONFIG_ESM_FILENAME)
-  console.log('Writing %s', esmFile)
-  fs.writeFileSync(esmFile, JSON.stringify(tsconfigEsm, null, '  '))
-
-  const pkgFile = path.join(dirname, 'package.json')
-  const pkg = JSON.parse(fs.readFileSync(pkgFile, 'utf8'))
-  pkg.module = 'lib/index.js'
-  pkg.module = pkg.main ? pkg.main.replace(/^lib/, 'esm') : 'lib/index.js'
-  console.log('Writing %s', pkgFile)
-  fs.writeFileSync(pkgFile, JSON.stringify(pkg, null, '  '))
-})