fix: don't record signatures of local hooks, fixes #1412

src/fresh/babel.js

@@ -211,6 +211,7 @@ export default function (babel) {
       key: fnHookCalls.map(call => call.name + '{' + call.key + '}').join('\n'),
       customHooks: fnHookCalls
         .filter(call => !isBuiltinHook(call.name))
+        .filter(call => scope.parent.hasBinding(call.name))
         .map(call => t.cloneDeep(call.callee)),
     };
   }

test/__babel_fixtures__/local-hooks.js

@@ -0,0 +1,36 @@
+import {useState} from "react";
+
+function Component1() {
+  function useRippleHandler() {}
+  useRippleHandler();
+  useRippleHandler();
+}
+
+function Component2() {
+  const useRippleHandler = () => {};
+  useRippleHandler();
+  useRippleHandler();
+}
+
+function Component3() {
+  const useRippleHandler = function () {};
+  useRippleHandler();
+  useRippleHandler();
+}
+
+const useInnerHook = ({useHookFromProps}) => {
+  const useHookBase = () => useState();
+  const useHook = () => useState(useHookFromProps(useHookBase()));
+  useHookFromProps();
+  {
+    // sub scope
+    useHook();
+  }
+};
+
+const OnlyThisOneUsesExternalHook = () => {
+  useInnerHook();
+  useState();
+};
+
+// check for "return ["