Current Behavior
An error is thrown when templates containing private fields are parsed.

Input Code

module.exports = function ({ template }) {
  const set_private = template`this.#IDENT = VALUE`;
};

Expected behavior/code
I would expect to be able to correctly parse and use templates containing private fields.

Environment (fairly certain none of this matters except Babel version)

• Babel version: 7.4.4
• Node/npm version: Node 12
• OS: Ubuntu 19.04
• Monorepo: no
• How you are using Babel: CLI