planning

node_modules/react-router/modules/hooks.js

@@ -0,0 +1,55 @@
+import React from "react";
+import invariant from "tiny-invariant";
+
+import RouterContext from "./RouterContext.js";
+import HistoryContext from "./HistoryContext.js";
+import matchPath from "./matchPath.js";
+
+const useContext = React.useContext;
+
+export function useHistory() {
+  if (__DEV__) {
+    invariant(
+      typeof useContext === "function",
+      "You must use React >= 16.8 in order to use useHistory()"
+    );
+  }
+
+  return useContext(HistoryContext);
+}
+
+export function useLocation() {
+  if (__DEV__) {
+    invariant(
+      typeof useContext === "function",
+      "You must use React >= 16.8 in order to use useLocation()"
+    );
+  }
+
+  return useContext(RouterContext).location;
+}
+
+export function useParams() {
+  if (__DEV__) {
+    invariant(
+      typeof useContext === "function",
+      "You must use React >= 16.8 in order to use useParams()"
+    );
+  }
+
+  const match = useContext(RouterContext).match;
+  return match ? match.params : {};
+}
+
+export function useRouteMatch(path) {
+  if (__DEV__) {
+    invariant(
+      typeof useContext === "function",
+      "You must use React >= 16.8 in order to use useRouteMatch()"
+    );
+  }
+
+  const location = useLocation();
+  const match = useContext(RouterContext).match;
+  return path ? matchPath(location.pathname, path) : match;
+}