add support for an array of paths in <Route> and matchPath (#5889)

packages/react-router/docs/api/Route.md

@@ -133,14 +133,18 @@ This could also be useful for animations:
 
 **Warning:** Both `<Route component>` and `<Route render>` take precedence over `<Route children>` so don't use more than one in the same `<Route>`.
 
-## path: string
+## path: string | string[]
 
-Any valid URL path that [`path-to-regexp@^1.7.0`](https://github.com/pillarjs/path-to-regexp/tree/v1.7.0) understands.
+Any valid URL path or array of paths that [`path-to-regexp@^1.7.0`](https://github.com/pillarjs/path-to-regexp/tree/v1.7.0) understands.
 
 ```jsx
 <Route path="/users/:id" component={User} />
 ```
 
+```jsx
+<Route path={["/users/:id", "/profile/:id"]} component={User} />
+```
+
 Routes without a `path` _always_ match.
 
 ## exact: bool

packages/react-router/docs/api/matchPath.md

@@ -24,7 +24,7 @@ to the matching props `Route` accepts:
 
 ```js
 {
-  path, // like /users/:id
+  path, // like /users/:id; either a single string or an array of strings
     strict, // optional, defaults to false
     exact; // optional, defaults to false
 }

packages/react-router/modules/Route.js

@@ -130,7 +130,10 @@ if (__DEV__) {
     component: PropTypes.func,
     exact: PropTypes.bool,
     location: PropTypes.object,
-    path: PropTypes.string,
+    path: PropTypes.oneOfType([
+      PropTypes.string,
+      PropTypes.arrayOf(PropTypes.string)
+    ]),
     render: PropTypes.func,
     sensitive: PropTypes.bool,
     strict: PropTypes.bool

packages/react-router/modules/__tests__/Route-test.js

@@ -98,6 +98,83 @@ describe("A <Route>", () => {
     });
   });
 
+  describe("with an array of paths", () => {
+    it("matches the first provided path", () => {
+      const node = document.createElement("div");
+      ReactDOM.render(
+        <MemoryRouter initialEntries={["/hello"]}>
+          <Route
+            path={["/hello", "/world"]}
+            render={() => <div>Hello World</div>}
+          />
+        </MemoryRouter>,
+        node
+      );
+
+      expect(node.innerHTML).toContain("Hello World");
+    });
+
+    it("matches other provided paths", () => {
+      const node = document.createElement("div");
+      ReactDOM.render(
+        <MemoryRouter initialEntries={["/other", "/world"]} initialIndex={1}>
+          <Route
+            path={["/hello", "/world"]}
+            render={() => <div>Hello World</div>}
+          />
+        </MemoryRouter>,
+        node
+      );
+
+      expect(node.innerHTML).toContain("Hello World");
+    });
+
+    it("provides the matched path as a string", () => {
+      const node = document.createElement("div");
+      ReactDOM.render(
+        <MemoryRouter initialEntries={["/other", "/world"]} initialIndex={1}>
+          <Route
+            path={["/hello", "/world"]}
+            render={({ match }) => <div>{match.path}</div>}
+          />
+        </MemoryRouter>,
+        node
+      );
+
+      expect(node.innerHTML).toContain("/world");
+    });
+
+    it("doesn't remount when moving from one matching path to another", () => {
+      const node = document.createElement("div");
+      const history = createHistory();
+      const mount = jest.fn();
+      class MatchedRoute extends React.Component {
+        componentWillMount() {
+          mount();
+        }
+
+        render() {
+          return <div>Hello World</div>;
+        }
+      }
+      history.push("/hello");
+      ReactDOM.render(
+        <Router history={history}>
+          <Route path={["/hello", "/world"]} component={MatchedRoute} />
+        </Router>,
+        node
+      );
+
+      expect(mount).toHaveBeenCalledTimes(1);
+      expect(node.innerHTML).toContain("Hello World");
+
+      history.push("/world/somewhere/else");
+
+      expect(mount).toHaveBeenCalledTimes(1);
+      expect(node.innerHTML).toContain("Hello World");
+    });
+  });
+
   describe("with a unicode path", () => {
     it("is able to match", () => {
       renderStrict(

packages/react-router/modules/__tests__/matchPath-test.js

@@ -33,6 +33,36 @@ describe("matchPath", () => {
     });
   });
 
+  describe("with an array of paths", () => {
+    it('return the correct url at "/elsewhere"', () => {
+      const path = ["/somewhere", "/elsewhere"];
+      const pathname = "/elsewhere";
+      const match = matchPath(pathname, { path });
+      expect(match.url).toBe("/elsewhere");
+    });
+
+    it('returns correct url at "/elsewhere/else"', () => {
+      const path = ["/somewhere", "/elsewhere"];
+      const pathname = "/elsewhere/else";
+      const match = matchPath(pathname, { path });
+      expect(match.url).toBe("/elsewhere");
+    });
+
+    it('returns correct url at "/elsewhere/else" with path "/" in array', () => {
+      const path = ["/somewhere", "/"];
+      const pathname = "/elsewhere/else";
+      const match = matchPath(pathname, { path });
+      expect(match.url).toBe("/");
+    });
+
+    it('returns correct url at "/somewhere" with path "/" in array', () => {
+      const path = ["/somewhere", "/"];
+      const pathname = "/somewhere";
+      const match = matchPath(pathname, { path });
+      expect(match.url).toBe("/somewhere");
+    });
+  });
+
   describe("with sensitive path", () => {
     it("returns non-sensitive url", () => {
       const options = {

packages/react-router/modules/matchPath.js

@@ -30,25 +30,34 @@ function matchPath(pathname, options = {}) {
 
   const { path, exact = false, strict = false, sensitive = false } = options;
 
-  const { regexp, keys } = compilePath(path, { end: exact, strict, sensitive });
-  const match = regexp.exec(pathname);
-
-  if (!match) return null;
-
-  const [url, ...values] = match;
-  const isExact = pathname === url;
-
-  if (exact && !isExact) return null;
-
-  return {
-    path, // the path used to match
-    url: path === "/" && url === "" ? "/" : url, // the matched portion of the URL
-    isExact, // whether or not we matched exactly
-    params: keys.reduce((memo, key, index) => {
-      memo[key.name] = values[index];
-      return memo;
-    }, {})
-  };
+  const paths = [].concat(path);
+
+  return paths.reduce((matched, path) => {
+    if (matched) return matched;
+    const { regexp, keys } = compilePath(path, {
+      end: exact,
+      strict,
+      sensitive
+    });
+    const match = regexp.exec(pathname);
+
+    if (!match) return null;
+
+    const [url, ...values] = match;
+    const isExact = pathname === url;
+
+    if (exact && !isExact) return null;
+
+    return {
+      path, // the path used to match
+      url: path === "/" && url === "" ? "/" : url, // the matched portion of the URL
+      isExact, // whether or not we matched exactly
+      params: keys.reduce((memo, key, index) => {
+        memo[key.name] = values[index];
+        return memo;
+      }, {})
+    };
+  }, null);
 }
 
 export default matchPath;