chore: clean up stale devDependencies and dead code

Remove babel-plugin-styled-components (no longer in babel config),
@types/styled-components (SC 6+ ships own types), and react-is (never
imported). Add @babel/plugin-transform-flow-strip-types as an explicit
devDependency (used in babel.config.json for RN tests). Remove dead
getKeyframeHashes wrapper from utils.js (collectHashes is used directly).

Author: quantizor

package.json

@@ -42,10 +42,9 @@
     "@changesets/changelog-git": "^0.2.1",
     "@changesets/cli": "^2.30.0",
     "@testing-library/react": "^12.1.2",
-    "@types/styled-components": "^5.1.15",
+    "@babel/plugin-transform-flow-strip-types": "^7.0.0",
     "@cfaester/enzyme-adapter-react-18": "^0.8.0",
     "babel-jest": "^27.3.1",
-    "babel-plugin-styled-components": "^2.0.1",
     "enzyme": "^3.6.0",
     "enzyme-adapter-preact-pure": "^3.3.0",
     "enzyme-to-json": "^3.3.1",
@@ -59,7 +58,6 @@
     "publint": "^0.3.18",
     "react": "18.2.0",
     "react-dom": "18.2.0",
-    "react-is": "^18.2.0",
     "react-native": "~0.71",
     "react-test-renderer": "18.2.0",
     "styled-components": "^6.0.9"

pnpm-lock.yaml

@@ -232,7 +232,6 @@ const collectHashes = () => {
 };
 
 const getHashes = () => collectHashes().all;
-const getKeyframeHashes = () => collectHashes().keyframes;
 
 const buildReturnMessage = (utils, pass, property, received, expected) => () =>
   `${utils.printReceived(
@@ -302,7 +301,6 @@ module.exports = {
   getCSSForMatcher,
   collectHashes,
   getHashes,
-  getKeyframeHashes,
   buildReturnMessage,
   matcherTest,
 };