Support nested roots (#18)

* feat: remove isLoader route property

* fix: has-parent-route fs-router util

* feat: handle routeGenerator nested __root

* feat: enable multiple roots with nested dynamic paths

* feat: enable nested routes

* fix: prevent route path creation for __root

* feat: prevent wrong path on subfolder index routes

* chore: cleaned tutorial example folder

* feat: update version to v0.8.0

packages/fs-router-vite-plugin/src/has-parent-route.ts

@@ -0,0 +1,37 @@
+import { ROOT_PATH_ID } from './constants'
+import { multiSortBy } from './utils'
+import type { RouteNode } from './types'
+
+export function hasParentRoute(
+  routes: RouteNode[],
+  node: RouteNode,
+  routePathToCheck = '/',
+): RouteNode | null {
+  const segments = routePathToCheck.split('/')
+  segments.pop() // Remove the last segment
+  const parentRoutePath = segments.join('/')
+
+  if (!parentRoutePath || parentRoutePath === '/') {
+    return null
+  }
+
+  const sortedNodes = multiSortBy(routes, [
+    (d): number => d.routePath.length * -1,
+    (d): string | undefined => d.variableName,
+  ])
+    // Exclude base __root file
+    .filter((d) => d.routePath !== `/${ROOT_PATH_ID}`)
+
+  for (const route of sortedNodes) {
+    if (route.routePath === '/') continue
+
+    if (
+      route.routePath.startsWith(parentRoutePath) &&
+      route.routePath.endsWith(ROOT_PATH_ID)
+    ) {
+      return route
+    }
+  }
+
+  return hasParentRoute(routes, node, parentRoutePath)
+}