Bug Report

Current Behavior
@babel/standalone transform failed when using preset-typescript

Input Code

• REPL or Repo link if applicable:

const _code = Babel.transform(code, { presets: ['typescript'] }).code;

Environment

• Babel version(s): @babel/standalone@7.4.5
• Node/npm version: node v8.9.3 / npm v6.9.0
• OS: OSX 10.13.2
• Monorepo: [no]
• How you are using Babel: standalone

Additional context/Screenshots
Add any other context about the problem here. If applicable, add screenshots to help explain.