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node_modules/babel-core/README.md

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+## babel-bridge
+
+This repo holds what we're calling a "bridge" package that is meant to ease the
+transition for libraries that use "babel-core" as a peer dependency for Babel 6.
+
+The issue with Babel 7's transition to scopes is that if a package depends on
+Babel 6, they may want to add support for Babel 7 alongside. Because Babel 7
+will be released as `@babel/core` instead of `babel-core`, maintainers have
+no way to do that transition without making a breaking change. e.g.
+
+```js
+peerDependencies: {
+  "babel-core": "6.x"
+}
+```
+cannot change to
+
+```js
+peerDependencies: {
+  "@babel/core": "6.x"
+}
+```
+
+without it being a breaking change.
+
+### Solution
+
+To address this, we're releasing this bridge package, to allow users to do
+
+
+```js
+peerDependencies: {
+  "babel-core": "6.x | ^7.0.0-bridge"
+}
+```
+
+then where users of this package would originally have done
+
+```sh
+npm i some-package babel-core
+```
+
+to install Babel 6, they could now do
+
+
+```sh
+npm i some-package babel-core@^7.0.0-bridge @babel/core
+```
+
+to install the bridge package, and install Babel 7's core.