Created router

src/App/index.tsx

@@ -1,12 +1,24 @@
+import { Route } from "@type/router";
 import React from "react";
-import Bookshelf from "../Bookshelf";
+
+import { Bookshelf } from "../Bookshelf";
+import { Router } from "../router";
+import { Err404 } from "../router/404";
 import { UploadForm } from "../UploadForm";
+
 import styles from "./App.module.css";
 
-export const App = () => (
+const routes: Route[] = [
-  <div className={styles.container}>
+  { Component: Bookshelf, path: "/list" },
-    <UploadForm />
+  { Component: UploadForm, path: "/upload" },
-  </div>
+];
-);
+
+export const App = () => {
+  return (
+    <div className={styles.container}>
+      <Router routes={routes} startPath="/list" DefaultComponent={Err404} />
+    </div>
+  );
+};
 
 export default App;

src/router/404.tsx

@@ -0,0 +1,8 @@
+import React from "react";
+
+export const Err404 = () => (
+  <>
+    <h1>Error 404</h1>
+    <h4>Path not found {window.location.pathname}</h4>
+  </>
+);

src/router/index.tsx

@@ -0,0 +1,30 @@
+import React from "react";
+
+import { BASE_URL } from "../constants";
+import { Route } from "@type/router";
+import { Err404 } from "./404";
+
+interface IRouterProps {
+  routes: Route[];
+  startPath?: string;
+  DefaultComponent?: React.FC;
+}
+
+export const Router = ({
+  routes,
+  startPath,
+  DefaultComponent,
+}: IRouterProps) => {
+  const currPath = window.location.pathname;
+  if (startPath && currPath === "/")
+    window.location.href = BASE_URL + startPath;
+
+  for (const route of routes) {
+    if (currPath === route.path || currPath === route.path + "/")
+      return <route.Component />;
+  }
+
+  if (DefaultComponent) return <DefaultComponent />;
+
+  return <Err404 />;
+};

src/type/router.ts

@@ -0,0 +1,4 @@
+export interface Route {
+  path: string;
+  Component: React.FC;
+}