Add future.v7_normalizeFormMethod flag

.changeset/normalize-form-method.md

@@ -0,0 +1,7 @@
+---
+"react-router": minor
+"react-router-dom": minor
+"@remix-run/router": minor
+---
+
+Add `future.v7_normalizeFormMethod` flag to normalize exposed `useNavigation().formMethod` and `useFetcher().formMethod` fields as uppercase HTTP methods to align with the `fetch()` behavior

docs/routers/create-browser-router.md

@@ -47,6 +47,8 @@ function createBrowserRouter(
   routes: RouteObject[],
   opts?: {
     basename?: string;
+    future?: FutureConfig;
+    hydrationData?: HydrationState;
     window?: Window;
   }
 ): RemixRouter;

docs/routers/create-memory-router.md

@@ -52,9 +52,10 @@ function createMemoryRouter(
   routes: RouteObject[],
   opts?: {
     basename?: string;
+    future?: FutureConfig;
+    hydrationData?: HydrationState;
     initialEntries?: InitialEntry[];
     initialIndex?: number;
-    window?: Window;
   }
 ): RemixRouter;
 ```

packages/react-router-dom/dom.ts

@@ -1,8 +1,8 @@
-import type { FormEncType, FormMethod } from "@remix-run/router";
+import type { FormEncType, HTMLFormMethod } from "@remix-run/router";
 import type { RelativeRoutingType } from "react-router";
 
-export const defaultMethod = "get";
-const defaultEncType = "application/x-www-form-urlencoded";
+export const defaultMethod: HTMLFormMethod = "get";
+const defaultEncType: FormEncType = "application/x-www-form-urlencoded";
 
 export function isHtmlElement(object: any): object is HTMLElement {
   return object != null && typeof object.tagName === "string";
@@ -110,7 +110,7 @@ export interface SubmitOptions {
    * The HTTP method used to submit the form. Overrides `<form method>`.
    * Defaults to "GET".
    */
-  method?: FormMethod;
+  method?: HTMLFormMethod;
 
   /**
    * The action URL path used to submit the form. Overrides `<form action>`.

packages/react-router-dom/index.tsx

@@ -30,11 +30,14 @@ import type {
   Fetcher,
   FormEncType,
   FormMethod,
+  FutureConfig,
   GetScrollRestorationKeyFunction,
   HashHistory,
   History,
+  HTMLFormMethod,
   HydrationState,
   Router as RemixRouter,
+  V7_FormMethod,
 } from "@remix-run/router";
 import {
   createRouter,
@@ -71,6 +74,7 @@ export type {
   ParamKeyValuePair,
   SubmitOptions,
   URLSearchParamsInit,
+  V7_FormMethod,
 };
 export { createSearchParams };
 
@@ -199,16 +203,20 @@ declare global {
 //#region Routers
 ////////////////////////////////////////////////////////////////////////////////
 
+interface DOMRouterOpts {
+  basename?: string;
+  future?: FutureConfig;
+  hydrationData?: HydrationState;
+  window?: Window;
+}
+
 export function createBrowserRouter(
   routes: RouteObject[],
-  opts?: {
-    basename?: string;
-    hydrationData?: HydrationState;
-    window?: Window;
-  }
+  opts?: DOMRouterOpts
 ): RemixRouter {
   return createRouter({
     basename: opts?.basename,
+    future: opts?.future,
     history: createBrowserHistory({ window: opts?.window }),
     hydrationData: opts?.hydrationData || parseHydrationData(),
     routes,
@@ -218,14 +226,11 @@ export function createBrowserRouter(
 
 export function createHashRouter(
   routes: RouteObject[],
-  opts?: {
-    basename?: string;
-    hydrationData?: HydrationState;
-    window?: Window;
-  }
+  opts?: DOMRouterOpts
 ): RemixRouter {
   return createRouter({
     basename: opts?.basename,
+    future: opts?.future,
     history: createHashHistory({ window: opts?.window }),
     hydrationData: opts?.hydrationData || parseHydrationData(),
     routes,
@@ -611,7 +616,7 @@ export interface FormProps extends React.FormHTMLAttributes<HTMLFormElement> {
    * The HTTP verb to use when the form is submit. Supports "get", "post",
    * "put", "delete", "patch".
    */
-  method?: FormMethod;
+  method?: HTMLFormMethod;
 
   /**
    * Normal `<form action>` but supports React Router's relative paths.
@@ -696,7 +701,7 @@ const FormImpl = React.forwardRef<HTMLFormElement, FormImplProps>(
     forwardedRef
   ) => {
     let submit = useSubmitImpl(fetcherKey, routeId);
-    let formMethod: FormMethod =
+    let formMethod: HTMLFormMethod =
       method.toLowerCase() === "get" ? "get" : "post";
     let formAction = useFormAction(action, { relative });
     let submitHandler: React.FormEventHandler<HTMLFormElement> = (event) => {
@@ -708,7 +713,7 @@ const FormImpl = React.forwardRef<HTMLFormElement, FormImplProps>(
         .submitter as HTMLFormSubmitter | null;
 
       let submitMethod =
-        (submitter?.getAttribute("formmethod") as FormMethod | undefined) ||
+        (submitter?.getAttribute("formmethod") as HTMLFormMethod | undefined) ||
         method;
 
       submit(submitter || event.currentTarget, {
@@ -965,7 +970,7 @@ function useSubmitImpl(fetcherKey?: string, routeId?: string): SubmitFunction {
         replace: options.replace,
         preventScrollReset: options.preventScrollReset,
         formData,
-        formMethod: method as FormMethod,
+        formMethod: method as HTMLFormMethod,
         formEncType: encType as FormEncType,
       };
       if (fetcherKey) {

packages/react-router/index.ts

@@ -21,6 +21,7 @@ import type {
   To,
   InitialEntry,
   LazyRouteFunction,
+  FutureConfig,
 } from "@remix-run/router";
 import {
   AbortedDeferredError,
@@ -233,13 +234,15 @@ export function createMemoryRouter(
   routes: RouteObject[],
   opts?: {
     basename?: string;
+    future?: FutureConfig;
     hydrationData?: HydrationState;
     initialEntries?: InitialEntry[];
     initialIndex?: number;
   }
 ): RemixRouter {
   return createRouter({
     basename: opts?.basename,
+    future: opts?.future,
     history: createMemoryHistory({
       initialEntries: opts?.initialEntries,
       initialIndex: opts?.initialIndex,

packages/router/__tests__/router-test.ts

@@ -10,6 +10,7 @@ import type {
   RouterNavigateOptions,
   StaticHandler,
   StaticHandlerContext,
+  FutureConfig,
 } from "../index";
 import {
   createMemoryHistory,
@@ -289,6 +290,7 @@ type SetupOpts = {
   initialEntries?: InitialEntry[];
   initialIndex?: number;
   hydrationData?: HydrationState;
+  future?: FutureConfig;
 };
 
 function setup({
@@ -297,6 +299,7 @@ function setup({
   initialEntries,
   initialIndex,
   hydrationData,
+  future,
 }: SetupOpts) {
   let guid = 0;
   // Global "active" helpers, keyed by navType:guid:loaderOrAction:routeId.
@@ -424,6 +427,7 @@ function setup({
     history,
     routes: enhanceRoutes(routes),
     hydrationData,
+    future,
   }).initialize();
 
   function getRouteHelpers(
@@ -3620,6 +3624,117 @@ describe("a router", () => {
         "childIndex",
       ]);
     });
+
+    describe("formMethod casing", () => {
+      it("normalizes to lowercase in v6", async () => {
+        let t = setup({
+          routes: [
+            {
+              id: "root",
+              path: "/",
+              children: [
+                {
+                  id: "child",
+                  path: "child",
+                  loader: true,
+                  action: true,
+                },
+              ],
+            },
+          ],
+        });
+        let A = await t.navigate("/child", {
+          formMethod: "get",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.navigation.formMethod).toBe("get");
+        await A.loaders.child.resolve("LOADER");
+        expect(t.router.state.navigation.formMethod).toBeUndefined();
+        await t.router.navigate("/");
+
+        let B = await t.navigate("/child", {
+          formMethod: "POST",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.navigation.formMethod).toBe("post");
+        await B.actions.child.resolve("ACTION");
+        await B.loaders.child.resolve("LOADER");
+        expect(t.router.state.navigation.formMethod).toBeUndefined();
+        await t.router.navigate("/");
+
+        let C = await t.fetch("/child", "key", {
+          formMethod: "GET",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBe("get");
+        await C.loaders.child.resolve("LOADER FETCH");
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBeUndefined();
+
+        let D = await t.fetch("/child", "key", {
+          formMethod: "post",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBe("post");
+        await D.actions.child.resolve("ACTION FETCH");
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBeUndefined();
+      });
+
+      it("normalizes to uppercase in v7 via v7_normalizeFormMethod", async () => {
+        let t = setup({
+          routes: [
+            {
+              id: "root",
+              path: "/",
+              children: [
+                {
+                  id: "child",
+                  path: "child",
+                  loader: true,
+                  action: true,
+                },
+              ],
+            },
+          ],
+          future: {
+            v7_normalizeFormMethod: true,
+          },
+        });
+        let A = await t.navigate("/child", {
+          formMethod: "get",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.navigation.formMethod).toBe("GET");
+        await A.loaders.child.resolve("LOADER");
+        expect(t.router.state.navigation.formMethod).toBeUndefined();
+        await t.router.navigate("/");
+
+        let B = await t.navigate("/child", {
+          formMethod: "POST",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.navigation.formMethod).toBe("POST");
+        await B.actions.child.resolve("ACTION");
+        await B.loaders.child.resolve("LOADER");
+        expect(t.router.state.navigation.formMethod).toBeUndefined();
+        await t.router.navigate("/");
+
+        let C = await t.fetch("/child", "key", {
+          formMethod: "GET",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBe("GET");
+        await C.loaders.child.resolve("LOADER FETCH");
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBeUndefined();
+
+        let D = await t.fetch("/child", "key", {
+          formMethod: "post",
+          formData: createFormData({}),
+        });
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBe("POST");
+        await D.actions.child.resolve("ACTION FETCH");
+        expect(t.router.state.fetchers.get("key")?.formMethod).toBeUndefined();
+      });
+    });
   });
 
   describe("action errors", () => {

packages/router/index.ts

@@ -13,6 +13,7 @@ export type {
   TrackedPromise,
   FormEncType,
   FormMethod,
+  HTMLFormMethod,
   JsonFunction,
   LoaderFunction,
   LoaderFunctionArgs,
@@ -22,7 +23,7 @@ export type {
   PathPattern,
   RedirectFunction,
   ShouldRevalidateFunction,
-  Submission,
+  V7_FormMethod,
 } from "./utils";
 
 export {