Bug Report

Hi There,
One of our builds on CI has just failed when we picked up the latest 7.7.0 release.
Building a react-native project is failing and we're getting this error :

error index.js: "" is not a valid identifer name
debug TypeError: "" is not a valid identifer name
    at node_modules/metro/node_modules/@babel/types/lib/definitions/core.js:322:17
    at Object.validate (node_modules/@babel/types/lib/definitions/utils.js:201:7)
    at validateField (node_modules/metro/node_modules/@babel/types/lib/validators/validate.js:22:9)
    at validate (node_modules/metro/node_modules/@babel/types/lib/validators/validate.js:16:3)
    at builder (node_modules/metro/node_modules/@babel/types/lib/builders/builder.js:38:27)
    at Object.Identifier (node_modules/metro/node_modules/@babel/types/lib/builders/generated/index.js:334:31)
    at functionFromProgram (metro/src/ModuleGraph/worker/JsFileWrapping.js:71:7)
    at Object.wrapModule (metro/src/ModuleGraph/worker/JsFileWrapping.js:39:19)
    at node_modules/metro/src/JSTransformer/worker.js:323:52

This happend on circle CI right after 7.7.0 was published, on a code base that hasn't changed, and is building perfectly on other platforms where the dependencies haven't been installed.

The problem is that many packages (like the metro bundler) have @babel/core@^7.0.0 defined as dependency, so this is automatically picked up when using these dependencies. This is what happened to us this morning

Current Behavior
I expect my RN bundle to build 😬

Input Code
simply make sure 7.7.0 is resolved. if 7.6.3 or earlier is resolved, all is good

Environment

• Babel version(s): [7.7.0]
• Node/npm version: [Node 8]
• OS: [Ubuntu]
• Monorepo: [no]
• How you are using Babel: [react native metro bundler]

Possible Solution
remove that update