REMOVE need for babel-register in our CLI

lib/cli/bin/index.js

@@ -1,9 +1,3 @@
-#!/usr/bin/env node
-const path = require('path');
+#!/usr/bin/env node -r esm
 
-require('@babel/register')({
- // see https://github.com/babel/babel/issues/7701#issuecomment-389720069
- cwd: path.resolve(__dirname, '..'),
- only: [new RegExp(`(@storybook|lib)${path.sep === '\\' ? '\\\\' : path.sep}cli`)],
-});
-require('./generate');
+import './generate';

lib/cli/package.json

@@ -29,12 +29,12 @@
  "dependencies": {
  "@babel/core": "^7.4.5",
  "@babel/preset-env": "^7.4.5",
- "@babel/register": "^7.0.0",
  "@storybook/codemod": "5.2.0-beta.37",
  "chalk": "^2.4.1",
  "commander": "^2.19.0",
  "core-js": "^3.0.1",
  "cross-spawn": "^6.0.5",
+ "esm": "3.2.25",
  "didyoumean": "^1.2.1",
  "envinfo": "^7.3.1",
  "fs-extra": "^8.0.1",

yarn.lock

@@ -11768,7 +11768,7 @@ eslint@^5.10.0, eslint@^5.14.1, eslint@^5.16.0:
  table "^5.2.3"
  text-table "^0.2.0"
 
-esm@^3.2.25, esm@^3.2.4:
+esm@3.2.25, esm@^3.2.25, esm@^3.2.4:
  version "3.2.25"
  resolved "https://registry.yarnpkg.com/esm/-/esm-3.2.25.tgz#342c18c29d56157688ba5ce31f8431fbb795cc10"
  integrity sha512-U1suiZ2oDVWv4zPO56S0NcR5QriEahGtdN2OR6FiOG4WJvcjBVFB0qI4+eKoWFH483PKGuLuu6V8Z4T5g63UVA==