Failing tests on a windows machine due to path format

[sag1v]

When running yarn jest transform-runtime
The packages/babel-plugin-transform-runtime/test/index.js tests fails with (not the backslashes \ -> //):

- var _classCallCheck = require("<CWD>/packages/babel-plugin-transform-runtime/node_modules/@babel/runtime/helpers/classCallCheck");
+ var _classCallCheck = require("<CWD>\\packages\\babel-plugin-transform-runtime\\node_modules\\@babel\\runtime/helpers/classCallCheck");

When running make test, all of these fail

• packages/babel-core/test/config-chain.js
• packages/babel-preset-env-standalone/test/babel-preset-env.js
• packages/babel-generator/test/index.js
• packages/babel-plugin-transform-react-jsx-source/test/index.js
• packages/babel-preset-react/test/preset-options.js
• packages/babel-plugin-transform-runtime/test/index.js
• packages/babel-preset-env/test/debug-fixtures.js
• packages/babel-generator/test/index.js

Windows 7 (x64)

[babel-bot]

Hey @sag1v! We really appreciate you taking the time to report an issue. The collaborators
on this project attempt to help as many people as possible, but we're a limited number of volunteers,
so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack
community that typically always has someone willing to help. You can sign-up here
for an invite.

[JLHwung]

@sag1v Could you attach the jest result report? It can help us narrow down the list of affected modules. You can do it like

yarn jest > test-report.log 2>&1