Fix typings of dynamic suspense

Author: huozhi

packages/next/shared/lib/dynamic.tsx

@@ -33,17 +33,18 @@ export type LoadableBaseOptions<P = {}> = LoadableGeneratedOptions & {
   ssr?: boolean
 }
 
-export type LoadableSuspenseOptions<P = {}> = {
-  loader: Loader<P>
+export type LoadableSuspenseOptions = {
   suspense?: boolean
 }
 
 export type LoadableOptions<P = {}> = LoadableBaseOptions<P>
 
-export type DynamicOptions<P = {}> = LoadableBaseOptions<P>
+export type DynamicOptions<P = {}> =
+  | LoadableBaseOptions<P>
+  | LoadableSuspenseOptions
 
 export type LoadableFn<P = {}> = (
-  opts: LoadableOptions<P> | LoadableSuspenseOptions<P>
+  opts: LoadableOptions<P> | LoadableSuspenseOptions
 ) => React.ComponentType<P>
 
 export type LoadableComponent<P = {}> = React.ComponentType<P>
@@ -113,7 +114,7 @@ export default function dynamic<P = {}>(
   // Support for passing options, eg: dynamic(import('../hello-world'), {loading: () => <p>Loading something</p>})
   loadableOptions = { ...loadableOptions, ...options }
 
-  const suspenseOptions = loadableOptions as LoadableSuspenseOptions<P>
+  const suspenseOptions = loadableOptions as LoadableSuspenseOptions
   if (!process.env.__NEXT_CONCURRENT_FEATURES) {
     // Error if react root is not enabled and `suspense` option is set to true
     if (!process.env.__NEXT_REACT_ROOT && suspenseOptions.suspense) {