Merge pull request #296 from Gentle/create_slice

create_slice in leptos_reactive

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: gbj

.github/workflows/test.yml

@@ -21,13 +21,14 @@ jobs:
           - ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Rust
         uses: actions-rs/toolchain@v1
         with:
           toolchain: ${{ matrix.rust }}
           override: true
+          components: rustfmt
 
       - name: Setup cargo-make
         uses: davidB/rust-cargo-make@v1
@@ -35,6 +36,9 @@ jobs:
       - name: Cargo generate-lockfile
         run: cargo generate-lockfile
 
+      - name: Run Rustfmt
+        run: cargo fmt -- --check
+
       - name: Cargo cache
         uses: actions/cache@v3
         with:

.gitignore

@@ -6,4 +6,3 @@ blob.rs
 Cargo.lock
 **/*.rs.bk
 .DS_Store
-.leptos.kdl

Cargo.toml

@@ -3,7 +3,6 @@ members = [
   # core
   "leptos",
   "leptos_dom",
-  "leptos_core",
   "leptos_config",
   "leptos_macro",
   "leptos_reactive",
@@ -17,28 +16,25 @@ members = [
   "meta",
   "router",
 
-  # examples
-  "examples/counter",
-  "examples/counter-isomorphic",
-  "examples/counters",
-  "examples/counters-stable",
-  "examples/fetch",
-  "examples/hackernews",
-  "examples/hackernews-axum",
-  "examples/parent-child",
-  "examples/router",
-  "examples/todomvc",
-  "examples/todo-app-sqlite",
-  "examples/todo-app-sqlite-axum",
-  "examples/todo-app-cbor",
-  "examples/view-tests",
-
   # book
   "docs/book/project/ch02_getting_started",
   "docs/book/project/ch03_building_ui",
   "docs/book/project/ch04_reactivity",
 ]
-exclude = ["benchmarks"]
+exclude = ["benchmarks", "examples"]
+
+[workspace.package]
+version = "0.1.0"
+
+[workspace.dependencies]
+leptos = { path = "./leptos", default-features = false, version = "0.1.0" }
+leptos_dom = { path = "./leptos_dom", default-features = false, version = "0.1.0" }
+leptos_macro = { path = "./leptos_macro", default-features = false, version = "0.1.0" }
+leptos_reactive = { path = "./leptos_reactive", default-features = false, version = "0.1.0" }
+leptos_server = { path = "./leptos_server", default-features = false, version = "0.1.0" }
+leptos_config = { path = "./leptos_config", default-features = false, version = "0.1.0" }
+leptos_router = { path = "./router", version = "0.1.0" }
+leptos_meta = { path = "./meta", default-feature = false, version = "0.1.0" }
 
 [profile.release]
 codegen-units = 1
@@ -46,29 +42,4 @@ lto = true
 opt-level = 'z'
 
 [workspace.metadata.cargo-all-features]
-skip_feature_sets = [
-  [
-    "csr",
-    "ssr",
-  ],
-  [
-    "csr",
-    "hydrate",
-  ],
-  [
-    "ssr",
-    "hydrate",
-  ],
-  [
-    "serde",
-    "serde-lite",
-  ],
-  [
-    "serde-lite",
-    "miniserde",
-  ],
-  [
-    "serde",
-    "miniserde",
-  ],
-]
+skip_feature_sets = [["csr", "ssr"], ["csr", "hydrate"], ["ssr", "hydrate"]]

Makefile.toml

@@ -8,7 +8,7 @@
 default_to_workspace = false
 
 [tasks.ci]
-dependencies = ["build", "test"]
+dependencies = ["build", "build-examples", "test"]
 
 [tasks.build]
 clear = true
@@ -19,6 +19,24 @@ command = "cargo"
 args = ["+nightly", "build-all-features"]
 install_crate = "cargo-all-features"
 
+[tasks.build-examples]
+clear = true
+dependencies = [
+	{ name = "build", path = "examples/counter" },
+	{ name = "build", path = "examples/counter_isomorphic" },
+	{ name = "build", path = "examples/counters" },
+	{ name = "build", path = "examples/counters_stable" },
+	{ name = "build", path = "examples/fetch" },
+	{ name = "build", path = "examples/hackernews" },
+	{ name = "build", path = "examples/hackernews_axum" },
+	{ name = "build", path = "examples/parent_child" },
+	{ name = "build", path = "examples/router" },
+	{ name = "build", path = "examples/tailwind" },
+	{ name = "build", path = "examples/todo_app_sqlite" },
+	{ name = "build", path = "examples/todo_app_sqlite_axum" },
+	{ name = "build", path = "examples/todomvc" },
+]
+
 [tasks.test]
 clear = true
 dependencies = ["test-all"]

README.md

@@ -1,6 +1,9 @@
-**Please note:** This framework is in active development. I'm keeping it in a cycle of 0.0.x releases at the moment to indicate that it’s not even ready for its 0.1.0. Active work is being done on documentation and features, and APIs should not necessarily be considered stable. At the same time, it is more than a toy project or proof of concept, and I am actively using it for my own application development.
+**NOTE: We're in the middle of merging changes and making fixes to support our upcoming `0.1.0` release. Some of the examples may be in a broken state. You can continue using the `0.0` releases with no issues.**
 
-<img src="https://raw.githubusercontent.com/gbj/leptos/main/docs/logos/logo.svg" alt="Leptos Logo" style="width: 100%; height: auto; display: block; margin: auto;">
+<picture>
+    <source srcset="https://raw.githubusercontent.com/leptos-rs/leptos/main/docs/logos/Leptos_logo_pref_dark_RGB.svg" media="(prefers-color-scheme: dark)">
+    <img src="https://raw.githubusercontent.com/leptos-rs/leptos/main/docs/logos/Leptos_logo_RGB.svg" alt="Leptos Logo">
+</picture>
 
 [![crates.io](https://img.shields.io/crates/v/leptos.svg)](https://crates.io/crates/leptos)
 [![docs.rs](https://docs.rs/leptos/badge.svg)](https://docs.rs/leptos)
@@ -12,7 +15,7 @@
 use leptos::*;
 
 #[component]
-pub fn SimpleCounter(cx: Scope, initial_value: i32) -> Element {
+pub fn SimpleCounter(cx: Scope, initial_value: i32) -> impl IntoView {
     // create a reactive signal with the initial value
     let (value, set_value) = create_signal(cx, initial_value);
 
@@ -22,7 +25,7 @@ pub fn SimpleCounter(cx: Scope, initial_value: i32) -> Element {
     let decrement = move |_| set_value.update(|value| *value -= 1);
     let increment = move |_| set_value.update(|value| *value += 1);
 
-    // this JSX is compiled to an HTML template string for performance
+    // create user interfaces with the declarative `view!` macro
     view! {
         cx,
         <div>
@@ -51,20 +54,9 @@ Leptos is a full-stack, isomorphic Rust web framework leveraging fine-grained re
 - **Isomorphic**: Leptos provides primitives to write isomorphic server functions, i.e., functions that can be called with the “same shape” on the client or server, but only run on the server. This means you can write your server-only logic (database requests, authentication etc.) alongside the client-side components that will consume it, and call server functions as if they were running in the browser.
 - **Web**: Leptos is built on the Web platform and Web standards. The router is designed to use Web fundamentals (like links and forms) and build on top of them rather than trying to replace them.
 - **Framework**: Leptos provides most of what you need to build a modern web app: a reactive system, templating library, and a router that works on both the server and client side.
-- **Fine-grained reactivity**: The entire framework is build from reactive primitives. This allows for extremely performant code with minimal overhead: when a reactive signal’s value changes, it can update a single text node, toggle a single class, or remove an element from the DOM without any other code running. (_So, no virtual DOM!_)
+- **Fine-grained reactivity**: The entire framework is built from reactive primitives. This allows for extremely performant code with minimal overhead: when a reactive signal’s value changes, it can update a single text node, toggle a single class, or remove an element from the DOM without any other code running. (_So, no virtual DOM!_)
 - **Declarative**: Tell Leptos how you want the page to look, and let the framework tell the browser how to do it.
 
-## Getting Started
-
-The best way to get started with a Leptos project right now is to use the [`cargo-leptos`](https://github.com/akesson/cargo-leptos) build tool and our [starter template](https://github.com/leptos-rs/start).
-
-```bash
-cargo install cargo-leptos
-cargo leptos new --git https://github.com/leptos-rs/start
-cd [your project name]
-cargo leptos watch
-```
-
 ## Learn more
 
 Here are some resources for learning more about Leptos:
@@ -76,43 +68,34 @@ Here are some resources for learning more about Leptos:
 
 ## `nightly` Note
 
-Most of the examples assume you’re using `nightly` Rust. If you’re on stable, note the following:
+Most of the examples assume you’re using `nightly` Rust.
 
-1. You need to enable the `"stable"` flag in `Cargo.toml`: `leptos = { version = "0.0", features = ["stable"] }`
+To set up your Rust toolchain using `nightly` (and add the ability to compile Rust to WebAssembly, if you haven’t already)
+
+```
+rustup toolchain install nightly
+rustup default nightly
+rustup target add wasm32-unknown-unknown
+```
+
+If you’re on `stable`, note the following:
+
+1. You need to enable the `"stable"` flag in `Cargo.toml`: `leptos = { version = "0.1.0-alpha", features = ["stable"] }`
 2. `nightly` enables the function call syntax for accessing and setting signals. If you’re using `stable`,
    you’ll just call `.get()`, `.set()`, or `.update()` manually. Check out the
    [`counters-stable` example](https://github.com/gbj/leptos/blob/main/examples/counters-stable/src/main.rs)
    for examples of the correct API.
 
-## Benchmarks
+## `cargo-leptos`
 
-### Server-Side Rendering
+[`cargo-leptos`](https://github.com/akesson/cargo-leptos) is a build tool that's designed to make it easy to build apps that run on both the client and the server, with seamless integration. The best way to get started with a real Leptos project right now is to use `cargo-leptos` and our [starter template](https://github.com/leptos-rs/start).
 
-I’ve created a benchmark comparing Leptos’s HTML rendering on the server to [Tera](https://github.com/Keats/tera), [Yew](https://github.com/yewstack/yew), and [Sycamore](https://github.com/sycamore-rs/sycamore). You can find the benchmark [here](https://github.com/gbj/leptos/tree/main/benchmarks) and run it yourself using `cargo bench`. Leptos renders HTML roughly as fast as Tera, and scales well as templates become larger. It's significantly faster than the server-side HTML rendering done by similar frameworks.
-
-<details>
-  <summary>Click to show results</summary>
-<table>
-<thead>
-<tr><td><em>ns/iter</em></td><td>Tera</td><td>Leptos</td><td>Yew</td><td>Sycamore</td></tr>
-</thead>
-<tbody>
-<tr><td>3 Counters</td><td align="right">3,454</td><td align="right">5,666</td><td align="right">34,984</td><td align="right">32,412</td></tr>
-<tr><td>TodoMVC (no todos)</td><td align="right">2,396</td><td align="right">5,561</td><td align="right">38,725</td><td align="right">68,749</td></tr>
-<tr><td>TodoMVC (1000 todos)</td><td align="right">3,829,447</td><td align="right">3,077,907</td><td align="right">5,125,639</td><td align="right">19,448,900</td></tr>
-<tr><td><em>Average</em></td><td align="right">1.08</td><td align="right">1.65</td><td align="right">6.25</td><td align="right">9.36</td></tr>
-</tbody>
-</table>
-</details>
-
-### Client-Side Rendering
-
-The gold standard for testing raw rendering performance for front-end web frameworks is the [js-framework-benchmark](https://github.com/krausest/js-framework-benchmark). The official results list Leptos as the fastest Rust/Wasm framework, slightly slower than SolidJS and significantly faster than popular JS frameworks like Svelte, Preact, and React.
-
-<details>
-  <summary>Click to show results</summary>
-  <img width="913" alt="js-framework-benchmark results" src="https://user-images.githubusercontent.com/286622/198388168-d21e938b-5d59-4000-b373-91b48f1ec4d3.png">
-</details>
+```bash
+cargo install cargo-leptos
+cargo leptos new --git https://github.com/leptos-rs/start
+cd [your project name]
+cargo leptos watch
+```
 
 ## FAQs
 
@@ -133,7 +116,7 @@ On the surface level, these libraries may seem similar. Yew is, of course, the m
 
 - **VDOM vs. fine-grained:** Yew is built on the virtual DOM (VDOM) model: state changes cause components to re-render, generating a new virtual DOM tree. Yew diffs this against the previous VDOM, and applies those patches to the actual DOM. Component functions rerun whenever state changes. Leptos takes an entirely different approach. Components run once, creating (and returning) actual DOM nodes and setting up a reactive system to update those DOM nodes.
 - **Performance:** This has huge performance implications: Leptos is simply _much_ faster at both creating and updating the UI than Yew is.
-- **Mental model:** Adopting fine-grained reactivity also tends to simplify the mental model. There are no surprising components re-renders because there are no re-renders. Your app can be divided into components based on what makes sense for your app, because they have no performance implications.
+- **Mental model:** Adopting fine-grained reactivity also tends to simplify the mental model. There are no surprising component re-renders because there are no re-renders. Your app can be divided into components based on what makes sense for your app, because they have no performance implications.
 
 ### How is this different from Sycamore?
 
@@ -147,17 +130,16 @@ There are some practical differences that make a significant difference:
 - **Read-write segregation:** Leptos, like Solid, encourages read-write segregation between signal getters and setters, so you end up accessing signals with tuples like `let (count, set_count) = create_signal(cx, 0);` _(If you prefer or if it's more convenient for your API, you can use `create_rw_signal` to give a unified read/write signal.)_
 - **Signals are functions:** In Leptos, you can call a signal to access it rather than calling a specific method (so, `count()` instead of `count.get()`) This creates a more consistent mental model: accessing a reactive value is always a matter of calling a function. For example:
 
-```rust
-let (count, set_count) = create_signal(cx, 0); // a signal
-let double_count = move || count() * 2; // a derived signal
-let memoized_count = create_memo(cx, move |_| count() * 3); // a memo
-// all are accessed by calling them
-assert_eq!(count(), 0);
-assert_eq!(double_count(), 0);
-assert_eq!(memoized_count(), 0);
+  ```rust
+  let (count, set_count) = create_signal(cx, 0); // a signal
+  let double_count = move || count() * 2; // a derived signal
+  let memoized_count = create_memo(cx, move |_| count() * 3); // a memo
+  // all are accessed by calling them
+  assert_eq!(count(), 0);
+  assert_eq!(double_count(), 0);
+  assert_eq!(memoized_count(), 0);
+  // this function can accept any of those signals
+  fn do_work_on_signal(my_signal: impl Fn() -> i32) { ... }
+  ```
 
-// this function can accept any of those signals
-fn do_work_on_signal(my_signal: impl Fn() -> i32) { ... }
-```
-
-- **Signals and scopes are `'static`:** Both Leptos and Sycamore ease the pain of moving signals in closures (in particular, event listeners) by making them `Copy`, to avoid the `{ let count = count.clone(); move |_| ... }` that's very familiar in Rust UI code. Sycamore does this by using bump allocation to tie the lifetimes of its signals to its scopes: since references are `Copy`, `&'a Signal<T>` can be moved into a closure. Leptos does this by using arena allocation and passing around indices: types like `ReadSignal<T>`, `WriteSignal<T>`, and `Memo<T>` are actually wrapper for indices into an arena. This means that both scopes and signals are both `Copy` and `'static` in Leptos, which means that they can be moved easily into closures without adding lifetime complexity.
+- **Signals and scopes are `'static`:** Both Leptos and Sycamore ease the pain of moving signals in closures (in particular, event listeners) by making them `Copy`, to avoid the `{ let count = count.clone(); move |_| ... }` that's very familiar in Rust UI code. Sycamore does this by using bump allocation to tie the lifetimes of its signals to its scopes: since references are `Copy`, `&'a Signal<T>` can be moved into a closure. Leptos does this by using arena allocation and passing around indices: types like `ReadSignal<T>`, `WriteSignal<T>`, and `Memo<T>` are actually wrappers for indices into an arena. This means that both scopes and signals are both `Copy` and `'static` in Leptos, which means that they can be moved easily into closures without adding lifetime complexity.

benchmarks/src/ssr.rs

@@ -2,12 +2,12 @@ use test::Bencher;
 
 #[bench]
 fn leptos_ssr_bench(b: &mut Bencher) {
-	use leptos::*;
-
 	b.iter(|| {
+		use leptos::*;
+
 		_ = create_scope(create_runtime(), |cx| {
 			#[component]
-			fn Counter(cx: Scope, initial: i32) -> Element {
+			fn Counter(cx: Scope, initial: i32) -> impl IntoView {
 				let (value, set_value) = create_signal(cx, initial);
 				view! {
 					cx,
@@ -28,16 +28,16 @@ fn leptos_ssr_bench(b: &mut Bencher) {
 					<Counter initial=2/>
 					<Counter initial=3/>
 				</main>
-			};
+			}.into_view(cx).render_to_string(cx);
 
 			assert_eq!(
 				rendered,
-				"<main data-hk=\"0-0\"><h1>Welcome to our benchmark page.</h1><p>Here's some introductory text.</p><!--#--><div data-hk=\"0-2-0\"><button>-1</button><span>Value: <!--#-->1<!--/-->!</span><button>+1</button></div><!--/--><!--#--><div data-hk=\"0-3-0\"><button>-1</button><span>Value: <!--#-->2<!--/-->!</span><button>+1</button></div><!--/--><!--#--><div data-hk=\"0-4-0\"><button>-1</button><span>Value: <!--#-->3<!--/-->!</span><button>+1</button></div><!--/--></main>"
+				"<main><h1>Welcome to our benchmark page.</h1><p>Here's some introductory text.</p><div><button>-1</button><span>Value: <!>1<template id=\"_3\"></template>!</span><button>+1</button></div><template id=\"_1\"></template><div><button>-1</button><span>Value: <!>2<template id=\"_2\"></template>!</span><button>+1</button></div><template id=\"_0\"></template><div><button>-1</button><span>Value: <!>3<template id=\"_2\"></template>!</span><button>+1</button></div><template id=\"_0\"></template></main>"
 			);
 		});
 	});
 }
-
+/* 
 #[bench]
 fn tera_ssr_bench(b: &mut Bencher) {
 	use tera::*;
@@ -194,3 +194,4 @@ fn yew_ssr_bench(b: &mut Bencher) {
 		});
 	});
 }
+ */

benchmarks/src/todomvc/leptos.rs

@@ -1,4 +1,4 @@
-use leptos::*;
+pub use leptos::*;
 use miniserde::*;
 use web_sys::HtmlInputElement;
 
@@ -8,314 +8,320 @@ pub struct Todos(pub Vec<Todo>);
 const STORAGE_KEY: &str = "todos-leptos";
 
 impl Todos {
-    pub fn new(cx: Scope) -> Self {
-        Self(vec![])
-    }
+  pub fn new(cx: Scope) -> Self {
+    Self(vec![])
+  }
 
-    pub fn new_with_1000(cx: Scope) -> Self {
-        let todos = (0..1000)
-            .map(|id| Todo::new(cx, id, format!("Todo #{id}")))
-            .collect();
-        Self(todos)
-    }
+  pub fn new_with_1000(cx: Scope) -> Self {
+    let todos = (0..1000)
+      .map(|id| Todo::new(cx, id, format!("Todo #{id}")))
+      .collect();
+    Self(todos)
+  }
 
-    pub fn is_empty(&self) -> bool {
-        self.0.is_empty()
-    }
+  pub fn is_empty(&self) -> bool {
+    self.0.is_empty()
+  }
 
-    pub fn add(&mut self, todo: Todo) {
-        self.0.push(todo);
-    }
+  pub fn add(&mut self, todo: Todo) {
+    self.0.push(todo);
+  }
 
-    pub fn remove(&mut self, id: usize) {
-        self.0.retain(|todo| todo.id != id);
-    }
+  pub fn remove(&mut self, id: usize) {
+    self.0.retain(|todo| todo.id != id);
+  }
 
-    pub fn remaining(&self) -> usize {
-        self.0.iter().filter(|todo| !(todo.completed)()).count()
-    }
+  pub fn remaining(&self) -> usize {
+    self.0.iter().filter(|todo| !(todo.completed)()).count()
+  }
 
-    pub fn completed(&self) -> usize {
-        self.0.iter().filter(|todo| (todo.completed)()).count()
-    }
+  pub fn completed(&self) -> usize {
+    self.0.iter().filter(|todo| (todo.completed)()).count()
+  }
 
-    pub fn toggle_all(&self) {
-        // if all are complete, mark them all active instead
-        if self.remaining() == 0 {
-            for todo in &self.0 {
-                if todo.completed.get() {
-                    (todo.set_completed)(false);
-                }
-            }
-        }
-        // otherwise, mark them all complete
-        else {
-            for todo in &self.0 {
-                (todo.set_completed)(true);
-            }
+  pub fn toggle_all(&self) {
+    // if all are complete, mark them all active instead
+    if self.remaining() == 0 {
+      for todo in &self.0 {
+        if todo.completed.get() {
+          (todo.set_completed)(false);
         }
+      }
     }
+    // otherwise, mark them all complete
+    else {
+      for todo in &self.0 {
+        (todo.set_completed)(true);
+      }
+    }
+  }
 
-    fn clear_completed(&mut self) {
-        self.0.retain(|todo| !todo.completed.get());
-    }
+  fn clear_completed(&mut self) {
+    self.0.retain(|todo| !todo.completed.get());
+  }
 }
 
 #[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Todo {
-    pub id: usize,
-    pub title: ReadSignal<String>,
-    pub set_title: WriteSignal<String>,
-    pub completed: ReadSignal<bool>,
-    pub set_completed: WriteSignal<bool>,
+  pub id: usize,
+  pub title: ReadSignal<String>,
+  pub set_title: WriteSignal<String>,
+  pub completed: ReadSignal<bool>,
+  pub set_completed: WriteSignal<bool>,
 }
 
 impl Todo {
-    pub fn new(cx: Scope, id: usize, title: String) -> Self {
-        Self::new_with_completed(cx, id, title, false)
-    }
+  pub fn new(cx: Scope, id: usize, title: String) -> Self {
+    Self::new_with_completed(cx, id, title, false)
+  }
 
-    pub fn new_with_completed(cx: Scope, id: usize, title: String, completed: bool) -> Self {
-        let (title, set_title) = create_signal(cx, title);
-        let (completed, set_completed) = create_signal(cx, completed);
-        Self {
-            id,
-            title,
-            set_title,
-            completed,
-            set_completed,
-        }
+  pub fn new_with_completed(
+    cx: Scope,
+    id: usize,
+    title: String,
+    completed: bool,
+  ) -> Self {
+    let (title, set_title) = create_signal(cx, title);
+    let (completed, set_completed) = create_signal(cx, completed);
+    Self {
+      id,
+      title,
+      set_title,
+      completed,
+      set_completed,
     }
+  }
 
-    pub fn toggle(&self) {
-        self.set_completed
-            .update(|completed| *completed = !*completed);
-    }
+  pub fn toggle(&self) {
+    self
+      .set_completed
+      .update(|completed| *completed = !*completed);
+  }
 }
 
 const ESCAPE_KEY: u32 = 27;
 const ENTER_KEY: u32 = 13;
 
 #[component]
-pub fn TodoMVC(cx: Scope, todos: Todos) -> Element {
-    let mut next_id = todos
+pub fn TodoMVC(cx: Scope,todos: Todos) -> impl IntoView {
+  let mut next_id = todos
+    .0
+    .iter()
+    .map(|todo| todo.id)
+    .max()
+    .map(|last| last + 1)
+    .unwrap_or(0);
+
+  let (todos, set_todos) = create_signal(cx, todos);
+  provide_context(cx, set_todos);
+
+  let (mode, set_mode) = create_signal(cx, Mode::All);
+  window_event_listener("hashchange", move |_| {
+    let new_mode = location_hash().map(|hash| route(&hash)).unwrap_or_default();
+    set_mode(new_mode);
+  });
+
+  let add_todo = move |ev: web_sys::KeyboardEvent| {
+    let target = event_target::<HtmlInputElement>(&ev);
+    ev.stop_propagation();
+    let key_code = ev.unchecked_ref::<web_sys::KeyboardEvent>().key_code();
+    if key_code == ENTER_KEY {
+      let title = event_target_value(&ev);
+      let title = title.trim();
+      if !title.is_empty() {
+        let new = Todo::new(cx, next_id, title.to_string());
+        set_todos.update(|t| t.add(new));
+        next_id += 1;
+        target.set_value("");
+      }
+    }
+  };
+
+  let filtered_todos = create_memo::<Vec<Todo>>(cx, move |_| {
+    todos.with(|todos| match mode.get() {
+      Mode::All => todos.0.to_vec(),
+      Mode::Active => todos
         .0
         .iter()
-        .map(|todo| todo.id)
-        .max()
-        .map(|last| last + 1)
-        .unwrap_or(0);
+        .filter(|todo| !todo.completed.get())
+        .cloned()
+        .collect(),
+      Mode::Completed => todos
+        .0
+        .iter()
+        .filter(|todo| todo.completed.get())
+        .cloned()
+        .collect(),
+    })
+  });
 
-    let (todos, set_todos) = create_signal(cx, todos);
-    provide_context(cx, set_todos);
-
-    let (mode, set_mode) = create_signal(cx, Mode::All);
-    window_event_listener("hashchange", move |_| {
-        let new_mode = location_hash().map(|hash| route(&hash)).unwrap_or_default();
-        set_mode(new_mode);
-    });
-
-    let add_todo = move |ev: web_sys::KeyboardEvent| {
-        let target = event_target::<HtmlInputElement>(&ev);
-        ev.stop_propagation();
-        let key_code = ev.unchecked_ref::<web_sys::KeyboardEvent>().key_code();
-        if key_code == ENTER_KEY {
-            let title = event_target_value(&ev);
-            let title = title.trim();
-            if !title.is_empty() {
-                let new = Todo::new(cx, next_id, title.to_string());
-                set_todos.update(|t| t.add(new));
-                next_id += 1;
-                target.set_value("");
-            }
-        }
-    };
-
-    let filtered_todos = create_memo::<Vec<Todo>>(cx, move |_| {
-        todos.with(|todos| match mode.get() {
-            Mode::All => todos.0.to_vec(),
-            Mode::Active => todos
-                .0
-                .iter()
-                .filter(|todo| !todo.completed.get())
-                .cloned()
-                .collect(),
-            Mode::Completed => todos
-                .0
-                .iter()
-                .filter(|todo| todo.completed.get())
-                .cloned()
-                .collect(),
-        })
-    });
-
-    // effect to serialize to JSON
-    // this does reactive reads, so it will automatically serialize on any relevant change
-    create_effect(cx, move |_| {
-        if let Ok(Some(storage)) = window().local_storage() {
-            let objs = todos
-                .get()
-                .0
-                .iter()
-                .map(TodoSerialized::from)
-                .collect::<Vec<_>>();
-            let json = json::to_string(&objs);
-            if storage.set_item(STORAGE_KEY, &json).is_err() {
-                log::error!("error while trying to set item in localStorage");
-            }
-        }
-    });
-
-    view! { cx,
-        <main>
-            <section class="todoapp">
-                <header class="header">
-                    <h1>"todos"</h1>
-                    <input class="new-todo" placeholder="What needs to be done?" autofocus on:keydown=add_todo />
-                </header>
-                <section class="main" class:hidden={move || todos.with(|t| t.is_empty())}>
-                    <input id="toggle-all" class="toggle-all" type="checkbox"
-                        prop:checked={move || todos.with(|t| t.remaining() > 0)}
-                        on:input=move |_| set_todos.update(|t| t.toggle_all())
-                    />
-                    <label for="toggle-all">"Mark all as complete"</label>
-                    <ul class="todo-list">
-                        <For each=filtered_todos key=|todo| todo.id>
-                            {move |cx, todo: &Todo| view! { cx,  <Todo todo=todo.clone() /> }}
-                        </For>
-                    </ul>
-                </section>
-                <footer class="footer" class:hidden={move || todos.with(|t| t.is_empty())}>
-                    <span class="todo-count">
-                        <strong>{move || todos.with(|t| t.remaining().to_string())}</strong>
-                        {move || if todos.with(|t| t.remaining()) == 1 {
-                            " item"
-                        } else {
-                            " items"
-                        }}
-                        " left"
-                    </span>
-                    <ul class="filters">
-                        <li><a href="#/" class="selected" class:selected={move || mode() == Mode::All}>"All"</a></li>
-                        <li><a href="#/active" class:selected={move || mode() == Mode::Active}>"Active"</a></li>
-                        <li><a href="#/completed" class:selected={move || mode() == Mode::Completed}>"Completed"</a></li>
-                    </ul>
-                    <button
-                        class="clear-completed hidden"
-                        class:hidden={move || todos.with(|t| t.completed() == 0)}
-                        on:click=move |_| set_todos.update(|t| t.clear_completed())
-                    >
-                        "Clear completed"
-                    </button>
-                </footer>
-            </section>
-            <footer class="info">
-                <p>"Double-click to edit a todo"</p>
-                <p>"Created by "<a href="http://todomvc.com">"Greg Johnston"</a></p>
-                <p>"Part of "<a href="http://todomvc.com">"TodoMVC"</a></p>
-            </footer>
-        </main>
+  // effect to serialize to JSON
+  // this does reactive reads, so it will automatically serialize on any relevant change
+  create_effect(cx, move |_| {
+    if let Ok(Some(storage)) = window().local_storage() {
+      let objs = todos
+        .get()
+        .0
+        .iter()
+        .map(TodoSerialized::from)
+        .collect::<Vec<_>>();
+      let json = json::to_string(&objs);
+      if storage.set_item(STORAGE_KEY, &json).is_err() {
+        log::error!("error while trying to set item in localStorage");
+      }
     }
+  });
+
+  view! { cx,
+      <main>
+          <section class="todoapp">
+              <header class="header">
+                  <h1>"todos"</h1>
+                  <input class="new-todo" placeholder="What needs to be done?" autofocus="" on:keydown=add_todo />
+              </header>
+              <section class="main" class:hidden={move || todos.with(|t| t.is_empty())}>
+                  <input id="toggle-all" class="toggle-all" type="checkbox"
+                      prop:checked={move || todos.with(|t| t.remaining() > 0)}
+                      on:input=move |_| set_todos.update(|t| t.toggle_all())
+                  />
+                  <label for="toggle-all">"Mark all as complete"</label>
+                  <ul class="todo-list">
+                      <For
+                        each=filtered_todos
+                        key=|todo| todo.id
+                        view=move |todo: Todo| view! { cx,  <Todo todo=todo.clone() /> }
+                      />
+                  </ul>
+              </section>
+              <footer class="footer" class:hidden={move || todos.with(|t| t.is_empty())}>
+                  <span class="todo-count">
+                      <strong>{move || todos.with(|t| t.remaining().to_string())}</strong>
+                      {move || if todos.with(|t| t.remaining()) == 1 {
+                          " item"
+                      } else {
+                          " items"
+                      }}
+                      " left"
+                  </span>
+                  <ul class="filters">
+                      <li><a href="#/" class="selected" class:selected={move || mode() == Mode::All}>"All"</a></li>
+                      <li><a href="#/active" class:selected={move || mode() == Mode::Active}>"Active"</a></li>
+                      <li><a href="#/completed" class:selected={move || mode() == Mode::Completed}>"Completed"</a></li>
+                  </ul>
+                  <button
+                      class="clear-completed hidden"
+                      class:hidden={move || todos.with(|t| t.completed() == 0)}
+                      on:click=move |_| set_todos.update(|t| t.clear_completed())
+                  >
+                      "Clear completed"
+                  </button>
+              </footer>
+          </section>
+          <footer class="info">
+              <p>"Double-click to edit a todo"</p>
+              <p>"Created by "<a href="http://todomvc.com">"Greg Johnston"</a></p>
+              <p>"Part of "<a href="http://todomvc.com">"TodoMVC"</a></p>
+          </footer>
+      </main>
+  }.into_view(cx)
 }
 
 #[component]
-pub fn Todo(cx: Scope, todo: Todo) -> Element {
-    let (editing, set_editing) = create_signal(cx, false);
-    let set_todos = use_context::<WriteSignal<Todos>>(cx).unwrap();
-    let input = NodeRef::new(cx);
+pub fn Todo(cx: Scope, todo: Todo) -> impl IntoView {
+  let (editing, set_editing) = create_signal(cx, false);
+  let set_todos = use_context::<WriteSignal<Todos>>(cx).unwrap();
+  //let input = NodeRef::new(cx);
 
-    let save = move |value: &str| {
-        let value = value.trim();
-        if value.is_empty() {
-            set_todos.update(|t| t.remove(todo.id));
-        } else {
-            (todo.set_title)(value.to_string());
-        }
-        set_editing(false);
-    };
+  let save = move |value: &str| {
+    let value = value.trim();
+    if value.is_empty() {
+      set_todos.update(|t| t.remove(todo.id));
+    } else {
+      (todo.set_title)(value.to_string());
+    }
+    set_editing(false);
+  };
 
-    let tpl = view! { cx,
-        <li
-            class="todo"
-            class:editing={editing}
-            class:completed={move || (todo.completed)()}
-            _ref=input
-        >
-            <div class="view">
-                <input
-                    class="toggle"
-                    type="checkbox"
-                    prop:checked={move || (todo.completed)()}
+  view! { cx,
+      <li
+          class="todo"
+          class:editing={editing}
+          class:completed={move || (todo.completed)()}
+          //_ref=input
+      >
+          <div class="view">
+              <input
+                  class="toggle"
+                  type="checkbox"
+                  prop:checked={move || (todo.completed)()}
 
-                />
-                <label on:dblclick=move |_| set_editing(true)>
-                    {move || todo.title.get()}
-                </label>
-                <button class="destroy" on:click=move |_| set_todos.update(|t| t.remove(todo.id))/>
-            </div>
-            {move || editing().then(|| view! { cx,
-                <input
-                    class="edit"
-                    class:hidden={move || !(editing)()}
-                    prop:value={move || todo.title.get()}
-                    on:focusout=move |ev| save(&event_target_value(&ev))
-                    on:keyup={move |ev| {
-                        let key_code = ev.unchecked_ref::<web_sys::KeyboardEvent>().key_code();
-                        if key_code == ENTER_KEY {
-                            save(&event_target_value(&ev));
-                        } else if key_code == ESCAPE_KEY {
-                            set_editing(false);
-                        }
-                    }}
-                />
-            })
-        }
-        </li>
-    };
-
-    tpl
+              />
+              <label on:dblclick=move |_| set_editing(true)>
+                  {move || todo.title.get()}
+              </label>
+              <button class="destroy" on:click=move |_| set_todos.update(|t| t.remove(todo.id))/>
+          </div>
+          {move || editing().then(|| view! { cx,
+              <input
+                  class="edit"
+                  class:hidden={move || !(editing)()}
+                  prop:value={move || todo.title.get()}
+                  on:focusout=move |ev| save(&event_target_value(&ev))
+                  on:keyup={move |ev| {
+                      let key_code = ev.unchecked_ref::<web_sys::KeyboardEvent>().key_code();
+                      if key_code == ENTER_KEY {
+                          save(&event_target_value(&ev));
+                      } else if key_code == ESCAPE_KEY {
+                          set_editing(false);
+                      }
+                  }}
+              />
+          })
+      }
+      </li>
+  }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Mode {
-    Active,
-    Completed,
-    All,
+  Active,
+  Completed,
+  All,
 }
 
 impl Default for Mode {
-    fn default() -> Self {
-        Mode::All
-    }
+  fn default() -> Self {
+    Mode::All
+  }
 }
 
 pub fn route(hash: &str) -> Mode {
-    match hash {
-        "/active" => Mode::Active,
-        "/completed" => Mode::Completed,
-        _ => Mode::All,
-    }
+  match hash {
+    "/active" => Mode::Active,
+    "/completed" => Mode::Completed,
+    _ => Mode::All,
+  }
 }
 
 #[derive(Serialize, Deserialize)]
 pub struct TodoSerialized {
-    pub id: usize,
-    pub title: String,
-    pub completed: bool,
+  pub id: usize,
+  pub title: String,
+  pub completed: bool,
 }
 
 impl TodoSerialized {
-    pub fn into_todo(self, cx: Scope) -> Todo {
-        Todo::new_with_completed(cx, self.id, self.title, self.completed)
-    }
+  pub fn into_todo(self, cx: Scope) -> Todo {
+    Todo::new_with_completed(cx, self.id, self.title, self.completed)
+  }
 }
 
 impl From<&Todo> for TodoSerialized {
-    fn from(todo: &Todo) -> Self {
-        Self {
-            id: todo.id,
-            title: todo.title.get(),
-            completed: (todo.completed)(),
-        }
+  fn from(todo: &Todo) -> Self {
+    Self {
+      id: todo.id,
+      title: todo.title.get(),
+      completed: (todo.completed)(),
     }
+  }
 }

benchmarks/src/todomvc/mod.rs

@@ -7,15 +7,14 @@ mod yew;
 
 #[bench]
 fn leptos_todomvc_ssr(b: &mut Bencher) {
-    use self::leptos::*;
-    use ::leptos::*;
-
     b.iter(|| {
+        use crate::todomvc::leptos::*;
+
         _ = create_scope(create_runtime(), |cx| {
             let rendered = view! {
                 cx,
                 <TodoMVC todos=Todos::new(cx)/>
-            };
+            }.into_view(cx).render_to_string(cx);
 
             assert!(rendered.len() > 1);
         });
@@ -59,15 +58,15 @@ fn yew_todomvc_ssr(b: &mut Bencher) {
 
 #[bench]
 fn leptos_todomvc_ssr_with_1000(b: &mut Bencher) {
-    use self::leptos::*;
-    use ::leptos::*;
-
     b.iter(|| {
+        use self::leptos::*;
+        use ::leptos::*;
+
         _ = create_scope(create_runtime(), |cx| {
             let rendered = view! {
                 cx,
                 <TodoMVC todos=Todos::new_with_1000(cx)/>
-            };
+            }.into_view(cx).render_to_string(cx);
 
             assert!(rendered.len() > 1);
         });

docs/COMMON_BUGS.md

@@ -10,7 +10,7 @@ This document is intended as a running list of common issues, with example code
 
 ```rust
 let (a, set_a) = create_signal(cx, 0);
-let (b, set_a) = create_signal(cx, false);
+let (b, set_b) = create_signal(cx, false);
 
 create_effect(cx, move |_| {
 	if a() > 5 {

docs/book/project/ch02_getting_started/Cargo.toml

@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-leptos = { path = "../../../../leptos" }
+leptos = "0.0.18"

docs/book/project/ch03_building_ui/Cargo.toml

@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-leptos = { path = "../../../../leptos" }
+leptos = "0.0.18"

docs/book/project/ch03_building_ui/src/main.rs

@@ -4,7 +4,7 @@ fn main() {
     mount_to_body(|cx| {
         let name = "gbj";
         let userid = 0;
-        let _input_element = NodeRef::new(cx);
+        let _input_element: Element;
 
         view! {
             cx,

docs/book/project/ch04_reactivity/Cargo.toml

@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-leptos = { path = "../../../../leptos" }
+leptos = "0.0.18"

docs/logos/Leptos_logo_RGB.svg

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 27.1.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 437.4294 209.6185" style="enable-background:new 0 0 437.4294 209.6185;" xml:space="preserve">
+<path style="fill:none;" d="M130.0327,79.3931c-11.4854-0.23-22.52,9.3486-24.5034,21.0117l49.1157,0.0293
+	c-2.1729-10.418-11.1821-21.0449-24.1987-21.0449C130.3081,79.3892,130.1714,79.3907,130.0327,79.3931z"/>
+<path style="fill:#181139;" d="M95.1109,128.1089H58.6797V65.6861c0-1.5234-0.8169-2.4331-2.1855-2.4331h-3.1187
+	c-1.3159,0-2.2349,1.0005-2.2349,2.4331v67.4297c0,1.4521,0.8145,2.2852,2.2349,2.2852h41.7353c1.4844,0,2.4819-0.9375,2.4819-2.333
+	v-2.7744C97.5928,128.9253,96.6651,128.1089,95.1109,128.1089z"/>
+<path style="fill:#181139;" d="M146.4561,77.1739c-4.8252-3.001-10.3037-4.5249-16.2837-4.5288c-0.0068,0-0.0137,0-0.0205,0
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+  <path class="st0" d="M241.9,80.4h7.6v42c0,6.8,4.6,12.1,11.1,12.9c0.7,0.1,1.8,0.2,3.5,0.2c2,0,3-0.4,3-2.3v-2.4c0-1.8-1.3-2-2.8-2 c0,0,0,0,0,0l-1.8,0c-2,0-3.5-0.8-4.4-2.1c-1-1.5-1.5-3.2-1.5-5V80.4h10.1c1.3,0,2.3-1.4,2.3-2.6v-1.9c0-1.4-0.8-2.2-2.2-2.2h-10.1 v-13c0-1.5-0.8-2.5-1.9-2.5c-0.2,0-0.4,0-0.6,0.1l-2.6,0.7c-1.2,0.4-2,0.9-2,2.5v12.2h-7.6c-1.4,0-2.3,0.9-2.3,2.3v1.9 C239.6,79.2,240.6,80.4,241.9,80.4z"/>
+  <path class="st0" d="M379.1,106.3c-4-2.9-8.9-5-14.3-6.3c-6.5-1.4-13.4-5.2-13.3-10.3c0-7.5,6.6-10.2,12.3-10.2c5.4,0,10.2,3,13,8 c0.7,1.3,1.5,1.9,2.4,1.9c0.3,0,0.7-0.1,1-0.3l2.2-1.2c0.6-0.3,0.9-0.9,0.9-1.7c0-0.5-0.1-1-0.3-1.3c-3.6-8.2-10.1-12.4-19.2-12.4 c-11.7,0-19.6,6.9-19.6,17.2c0,4.3,1.8,8,5.5,10.9c3.4,2.8,7.9,4.9,13.3,6.1c4.6,1.1,8.3,2.6,11.1,4.4c1.4,0.9,2.4,2.1,3.1,3.4 c0.6,1.2,0.9,2.6,0.9,4.1c0.1,2.4-0.8,4.5-2.6,6.3c-3.1,3.2-8.4,4.7-12,4.7c0,0-0.1,0-0.1,0c-3.4,0-6.5-0.8-9.1-2.5 c-2.6-1.6-4.2-3.8-5-6.6c-0.3-1.1-0.8-2.2-2.2-2.2c-0.1,0-0.2,0-0.4,0c-0.1,0-0.3,0-0.5,0.1l-1.9,0.4l-0.1,0c-1,0.4-1.6,1.2-1.6,2.1 c0,0.2,0.1,0.7,0.2,1.1c2,8.6,10.2,14.3,20.6,14.3c0.1,0,0.2,0,0.4,0c6.6,0,12.7-2.3,16.7-6.4c3.2-3.2,4.8-7.2,4.7-11.6 c0-2.8-0.6-5.3-1.8-7.5C382.4,109.3,381,107.6,379.1,106.3z"/>
+  <path class="st1" d="M348.9,45.7c0-6.3-3.3-11.9-8.2-15.1c-2.8-1.8-6.2-2.9-9.7-2.9c-9.9,0-18,8.1-18,18c0,4.8,1.9,9.1,4.9,12.3 c-3.7,4.4-6.6,9.3-8.8,14.7c-1.6-0.2-3.2-0.4-4.9-0.4c-17.7,0-32.1,14.4-32.1,32.1c0,14.7,9.9,27.1,23.4,30.9 c-6.8,17.3-23.7,29.7-43.4,29.7c-16.8,0-31.6-9-39.8-22.4c-2.5,0.5-5,0.9-7.7,0.9c9,17,26.9,28.6,47.4,28.6 c23.3,0,43.1-14.9,50.5-35.6c0.5,0,1,0,1.6,0c17.7,0,32.1-14.4,32.1-32.1c0-13.6-8.4-25.2-20.3-29.9c1.9-4.6,4.5-8.8,7.7-12.5 c1,0.4,2,0.8,3.1,1c1.3,0.3,2.7,0.5,4.1,0.5C340.8,63.7,348.9,55.6,348.9,45.7z M304.2,129.5c-13.8,0-25-11.2-25-25s11.2-25,25-25 s25,11.2,25,25S318,129.5,304.2,129.5z M330.9,34.9c0.6,0,1.3,0.1,1.9,0.2c5.1,0.9,9,5.3,9,10.7c0,6-4.9,10.8-10.8,10.8 s-10.8-4.9-10.8-10.8c0-1.4,0.3-2.7,0.8-4C322.4,37.7,326.4,34.9,330.9,34.9z"/>
+</svg>

examples/counter-isomorphic/Cargo.toml

@@ -1,44 +0,0 @@
-[package]
-name = "leptos-counter-isomorphic"
-version = "0.1.0"
-edition = "2021"
-
-[lib]
-crate-type = ["cdylib", "rlib"]
-
-[dependencies]
-actix-files = { version = "0.6", optional = true }
-actix-web = { version = "4", optional = true, features = ["openssl", "macros"] }
-broadcaster = "1"
-console_log = "0.2"
-console_error_panic_hook = "0.1"
-serde = { version = "1", features = ["derive"] }
-futures = "0.3"
-cfg-if = "1"
-lazy_static = "1"
-leptos = { path = "../../leptos", default-features = false, features = [
-	"serde",
-] }
-leptos_actix = { path = "../../integrations/actix", optional = true }
-leptos_meta = { path = "../../meta", default-features = false }
-leptos_router = { path = "../../router", default-features = false }
-log = "0.4"
-simple_logger = "2"
-gloo = { git = "https://github.com/rustwasm/gloo" }
-
-[features]
-default = ["csr"]
-csr = ["leptos/csr", "leptos_meta/csr", "leptos_router/csr"]
-hydrate = ["leptos/hydrate", "leptos_meta/hydrate", "leptos_router/hydrate"]
-ssr = [
-	"dep:actix-files",
-	"dep:actix-web",
-	"leptos/ssr",
-	"leptos_actix",
-	"leptos_meta/ssr",
-	"leptos_router/ssr",
-]
-
-[package.metadata.cargo-all-features]
-denylist = ["actix-files", "actix-web", "leptos_actix"]
-skip_feature_sets = [["csr", "ssr"], ["csr", "hydrate"], ["ssr", "hydrate"]]

examples/counter-isomorphic/README.md

@@ -1,21 +0,0 @@
-# Leptos Counter Isomorphic Example
-
-This example demonstrates how to use a function isomorphically, to run a server side function from the browser and receive a result.
-
-## Server Side Rendering With Hydration
-
-To run it as a server side app with hydration, first you should run
-
-```bash
-wasm-pack build --target=web --no-default-features --features=hydrate
-```
-
-to generate the WebAssembly to provide hydration features for the server.
-Then run the server with `cargo run` to serve the server side rendered HTML and the WASM bundle for hydration.
-
-```bash
-cargo run --no-default-features --features=ssr
-```
-
-> Note that if your hydration code changes, you will have to rerun the wasm-pack command above
-> This should be temporary, and vastly improve once cargo-leptos becomes ready for prime time!

examples/counter/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/counter/README.md

@@ -3,5 +3,3 @@
 This example creates a simple counter in a client side rendered app with Rust and WASM!
 
 To run it, just issue the `trunk serve --open` command in the example root. This will build the app, run it, and open a new browser to serve it.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)

examples/counter/index.html

@@ -2,6 +2,7 @@
 <html>
 	<head>
 		<link data-trunk rel="rust" data-wasm-opt="z"/>
+		<link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico"/>
 	</head>
 	<body></body>
 </html>

examples/counter/src/lib.rs

@@ -2,14 +2,16 @@ use leptos::*;
 
 /// A simple counter component.
 /// 
-/// You can document each of the properties passed to a component using the format below.
-/// 
-/// # Props
-/// - **initial_value** [`i32`] - The value the counter should start at.
-/// - **step** [`i32`] - The change that should be applied on each step.
+/// You can use doc comments like this to document your component.
 #[component]
-pub fn SimpleCounter(cx: Scope, initial_value: i32, step: i32) -> web_sys::Element {
-    let (value, set_value) = create_signal(cx, 0);
+pub fn SimpleCounter(
+    cx: Scope,
+    /// The starting value for the counter
+    initial_value: i32,
+    /// The change that should be applied each time the button is clicked.
+    step: i32
+) -> impl IntoView {
+    let (value, set_value) = create_signal(cx, initial_value);
 
     view! { cx,
         <div>

examples/counter/src/main.rs

@@ -4,5 +4,10 @@ use leptos::*;
 pub fn main() {
     _ = console_log::init_with_level(log::Level::Debug);
     console_error_panic_hook::set_once();
-    mount_to_body(|cx| view! { cx, <SimpleCounter initial_value=3 step=1/> })
+    mount_to_body(|cx| view! { cx,
+        <SimpleCounter
+            initial_value=0
+            step=1
+        />
+    })
 }

examples/counter/tests/mod.rs

@@ -11,11 +11,16 @@ fn inc() {
 
     let document = leptos::document();
     let div = document.query_selector("div").unwrap().unwrap();
-    let dec = div
+    let clear = div
         .first_child()
         .unwrap()
         .dyn_into::<HtmlElement>()
         .unwrap();
+    let dec = clear
+        .next_sibling()
+        .unwrap()
+        .dyn_into::<HtmlElement>()
+        .unwrap();
     let text = dec
         .next_sibling()
         .unwrap()
@@ -30,12 +35,16 @@ fn inc() {
     inc.click();
     inc.click();
 
-    assert_eq!(text.text_content(), Some("2".to_string()));
+    assert_eq!(text.text_content(), Some("Value: 2!".to_string()));
 
     dec.click();
     dec.click();
     dec.click();
     dec.click();
 
-    assert_eq!(text.text_content(), Some("-2".to_string()));
+    assert_eq!(text.text_content(), Some("Value: -2!".to_string()));
+
+    clear.click();
+
+    assert_eq!(text.text_content(), Some("Value: 0!".to_string()));
 }

examples/counter_isomorphic/.gitignore

@@ -0,0 +1 @@
+.leptos.kdl

examples/counter_isomorphic/Cargo.toml

@@ -0,0 +1,88 @@
+[package]
+name = "counter_isomorphic"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+actix-files = { version = "0.6", optional = true }
+actix-web = { version = "4", optional = true, features = ["openssl", "macros"] }
+broadcaster = "1"
+console_log = "0.2"
+console_error_panic_hook = "0.1"
+serde = { version = "1", features = ["derive"] }
+futures = "0.3"
+cfg-if = "1"
+lazy_static = "1"
+leptos = { path = "../../leptos", default-features = false, features = [
+	"serde",
+] }
+leptos_actix = { path = "../../integrations/actix", optional = true }
+leptos_meta = { path = "../../meta", default-features = false }
+leptos_router = { path = "../../router", default-features = false }
+log = "0.4"
+simple_logger = "4.0.0"
+gloo-net = { git = "https://github.com/rustwasm/gloo" }
+
+[features]
+default = []
+hydrate = ["leptos/hydrate", "leptos_meta/hydrate", "leptos_router/hydrate"]
+ssr = [
+	"dep:actix-files",
+	"dep:actix-web",
+	"leptos/ssr",
+	"leptos_actix",
+	"leptos_meta/ssr",
+	"leptos_router/ssr",
+]
+stable = ["leptos/stable", "leptos_router/stable"]
+
+[package.metadata.cargo-all-features]
+denylist = ["actix-files", "actix-web", "leptos_actix", "stable"]
+skip_feature_sets = [["ssr", "hydrate"]]
+
+[package.metadata.leptos]
+# The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name   
+output-name = "counter_isomorphic"
+# The site root folder is where cargo-leptos generate all output. WARNING: all content of this folder will be erased on a rebuild. Use it in your server setup.
+site-root = "target/site"
+# The site-root relative folder where all compiled output (JS, WASM and CSS) is written
+# Defaults to pkg	
+site-pkg-dir = "pkg"
+# [Optional] The source CSS file. If it ends with .sass or .scss then it will be compiled by dart-sass into CSS. The CSS is optimized by Lightning CSS before being written to <site-root>/<site-pkg>/app.css
+# style-file = "src/styles/tailwind.css"
+# [Optional] Files in the asset-dir will be copied to the site-root directory
+assets-dir = "public"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-address = "127.0.0.1:3000"
+# The port to use for automatic reload monitoring
+reload-port = 3001
+# [Optional] Command to use when running end2end tests. It will run in the end2end dir.
+end2end-cmd = "npx playwright test"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults"
+# Set by cargo-leptos watch when building with tha tool. Controls whether autoreload JS will be included in the head
+watch = false
+# The environment Leptos will run in, usually either "DEV" or "PROD"
+env = "DEV"
+# The features to use when compiling the bin target
+#
+# Optional. Can be over-ridden with the command line parameter --bin-features
+bin-features = ["ssr"]
+
+# If the --no-default-features flag should be used when compiling the bin target
+#
+# Optional. Defaults to false.
+bin-default-features = false
+
+# The features to use when compiling the lib target
+#
+# Optional. Can be over-ridden with the command line parameter --lib-features
+lib-features = ["hydrate"]
+
+# If the --no-default-features flag should be used when compiling the lib target
+#
+# Optional. Defaults to false.
+lib-default-features = false

examples/counter_isomorphic/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/counter_isomorphic/README.md

@@ -0,0 +1,40 @@
+# Leptos Counter Isomorphic Example
+
+This example demonstrates how to use a function isomorphically, to run a server side function from the browser and receive a result.
+
+## Client Side Rendering
+To run it as a Client Side App, you can issue  `trunk serve --open` in the root. This will build the entire
+app into one CSR bundle. Make sure you have trunk installed with `cargo install trunk`.
+
+## Server Side Rendering with cargo-leptos
+cargo-leptos is now the easiest and most featureful way to build server side rendered apps with hydration. It provides automatic recompilation of client and server code, wasm optimisation, CSS minification, and more! Check out more about it [here](https://github.com/akesson/cargo-leptos)
+
+1. Install cargo-leptos
+```bash
+cargo install --locked cargo-leptos
+``` 
+2. Build the site in watch mode, recompiling on file changes
+```bash
+cargo leptos watch
+```
+3. When ready to deploy, run
+```bash
+cargo leptos build --release
+```
+
+## Server Side Rendering without cargo-leptos
+To run it as a server side app with hydration, you'll need to have wasm-pack installed.
+
+0. Edit the `[package.metadata.leptos]` section and set `site-root` to `"pkg"`. You'll also want to change the path of the `<StyleSheet / >` component in the root component to point towards the CSS file in the root. This tells leptos that the WASM/JS files generated by wasm-pack are available at `./pkg` and that the CSS files are no longer processed by cargo-leptos. Building to alternative folders is not supported at this time.
+1. Install wasm-pack
+```bash
+cargo install wasm-pack
+```
+2. Build the Webassembly used to hydrate the HTML from the server
+```bash
+wasm-pack build --target=web --debug --no-default-features --features=hydrate
+```
+3. Run the server to serve the Webassembly, JS, and HTML 
+```bash
+cargo run --no-default-features --features=ssr
+```

examples/counter_isomorphic/src/counters.rs

@@ -1,5 +1,6 @@
 use leptos::*;
 use leptos_router::*;
+use leptos_meta::*;
 
 #[cfg(feature = "ssr")]
 use std::sync::atomic::{AtomicI32, Ordering};
@@ -9,9 +10,9 @@ use broadcaster::BroadcastChannel;
 
 #[cfg(feature = "ssr")]
 pub fn register_server_functions() {
-    GetServerCount::register();
-    AdjustServerCount::register();
-    ClearServerCount::register();
+    _ = GetServerCount::register();
+    _ = AdjustServerCount::register();
+    _ = ClearServerCount::register();
 }
 
 #[cfg(feature = "ssr")]
@@ -43,41 +44,41 @@ pub async fn clear_server_count() -> Result<i32, ServerFnError> {
     Ok(0)
 }
 #[component]
-pub fn Counters(cx: Scope) -> Element {
+pub fn Counters(cx: Scope) -> impl IntoView {
+    provide_meta_context(cx);
     view! {
         cx,
-        <div>
-            <Router>
-                <header>
-                    <h1>"Server-Side Counters"</h1>
-                    <p>"Each of these counters stores its data in the same variable on the server."</p>
-                    <p>"The value is shared across connections. Try opening this is another browser tab to see what I mean."</p>
-                </header>
-                <nav>
-                    <ul>
-                        <li><A href="">"Simple"</A></li>
-                        <li><A href="form">"Form-Based"</A></li>
-                        <li><A href="multi">"Multi-User"</A></li>
-                    </ul>
-                </nav>
-                <main>
-                    <Routes>
-                        <Route path="" element=|cx| view! {
-                            cx,
-                            <Counter/>
-                        }/>
-                        <Route path="form" element=|cx| view! {
-                            cx,
-                            <FormCounter/>
-                        }/>
-                        <Route path="multi" element=|cx| view! {
-                            cx,
-                            <MultiuserCounter/>
-                        }/>
-                    </Routes>
-                </main>
-            </Router>
-        </div>
+        <Router>
+            <header>
+                <h1>"Server-Side Counters"</h1>
+                <p>"Each of these counters stores its data in the same variable on the server."</p>
+                <p>"The value is shared across connections. Try opening this is another browser tab to see what I mean."</p>
+            </header>
+            <nav>
+                <ul>
+                    <li><A href="">"Simple"</A></li>
+                    <li><A href="form">"Form-Based"</A></li>
+                    <li><A href="multi">"Multi-User"</A></li>
+                </ul>
+            </nav>
+            <Link rel="shortcut icon" type_="image/ico" href="/favicon.ico"/>
+            <main>
+                <Routes>
+                    <Route path="" view=|cx| view! {
+                        cx,
+                        <Counter/>
+                    }/>
+                    <Route path="form" view=|cx| view! {
+                        cx,
+                        <FormCounter/>
+                    }/>
+                    <Route path="multi" view=|cx| view! {
+                        cx,
+                        <MultiuserCounter/>
+                    }/>
+                </Routes>
+            </main>
+        </Router>
     }
 }
 
@@ -86,13 +87,13 @@ pub fn Counters(cx: Scope) -> Element {
 // it's invalidated by one of the user's own actions
 // This is the typical pattern for a CRUD app
 #[component]
-pub fn Counter(cx: Scope) -> Element {
+pub fn Counter(cx: Scope) -> impl IntoView {
     let dec = create_action(cx, |_| adjust_server_count(-1, "decing".into()));
     let inc = create_action(cx, |_| adjust_server_count(1, "incing".into()));
     let clear = create_action(cx, |_| clear_server_count());
     let counter = create_resource(
         cx,
-        move || (dec.version.get(), inc.version.get(), clear.version.get()),
+        move || (dec.version().get(), inc.version().get(), clear.version().get()),
         |_| get_server_count(),
     );
 
@@ -118,6 +119,7 @@ pub fn Counter(cx: Scope) -> Element {
                 <span>"Value: " {move || value().to_string()} "!"</span>
                 <button on:click=move |_| inc.dispatch(())>"+1"</button>
             </div>
+            {move || error_msg().map(|msg| view! { cx, <p>"Error: " {msg.to_string()}</p>})}
         </div>
     }
 }
@@ -126,20 +128,15 @@ pub fn Counter(cx: Scope) -> Element {
 // It uses the same invalidation pattern as the plain counter,
 // but uses HTML forms to submit the actions
 #[component]
-pub fn FormCounter(cx: Scope) -> Element {
+pub fn FormCounter(cx: Scope) -> impl IntoView {
     let adjust = create_server_action::<AdjustServerCount>(cx);
     let clear = create_server_action::<ClearServerCount>(cx);
 
     let counter = create_resource(
         cx,
-        {
-            let adjust = adjust.version;
-            let clear = clear.version;
-            move || (adjust.get(), clear.get())
-        },
+        move || (adjust.version().get(), clear.version().get()),
         |_| {
             log::debug!("FormCounter running fetcher");
-
             get_server_count()
         },
     );
@@ -153,8 +150,6 @@ pub fn FormCounter(cx: Scope) -> Element {
             .unwrap_or(0)
     };
 
-    let adjust2 = adjust.clone();
-
     view! {
         cx,
         <div>
@@ -174,7 +169,7 @@ pub fn FormCounter(cx: Scope) -> Element {
                     <input type="submit" value="-1"/>
                 </ActionForm>
                 <span>"Value: " {move || value().to_string()} "!"</span>
-                <ActionForm action=adjust2>
+                <ActionForm action=adjust>
                     <input type="hidden" name="delta" value="1"/>
                     <input type="hidden" name="msg" value="form value up"/>
                     <input type="submit" value="+1"/>
@@ -189,7 +184,7 @@ pub fn FormCounter(cx: Scope) -> Element {
 // Whenever another user updates the value, it will update here
 // This is the primitive pattern for live chat, collaborative editing, etc.
 #[component]
-pub fn MultiuserCounter(cx: Scope) -> Element {
+pub fn MultiuserCounter(cx: Scope) -> impl IntoView {
     let dec = create_action(cx, |_| adjust_server_count(-1, "dec dec goose".into()));
     let inc = create_action(cx, |_| adjust_server_count(1, "inc inc moose".into()));
     let clear = create_action(cx, |_| clear_server_count());
@@ -198,7 +193,7 @@ pub fn MultiuserCounter(cx: Scope) -> Element {
     let multiplayer_value = {
         use futures::StreamExt;
 
-        let mut source = gloo::net::eventsource::futures::EventSource::new("/api/events")
+        let mut source = gloo_net::eventsource::futures::EventSource::new("/api/events")
             .expect_throw("couldn't connect to SSE stream");
         let s = create_signal_from_stream(
             cx,
@@ -217,8 +212,8 @@ pub fn MultiuserCounter(cx: Scope) -> Element {
     };
 
     #[cfg(feature = "ssr")]
-    let multiplayer_value =
-        create_signal_from_stream(cx, futures::stream::once(Box::pin(async { 0.to_string() })));
+    let (multiplayer_value, _) =
+        create_signal(cx, None::<i32>);
 
     view! {
         cx,
@@ -228,7 +223,7 @@ pub fn MultiuserCounter(cx: Scope) -> Element {
             <div>
                 <button on:click=move |_| clear.dispatch(())>"Clear"</button>
                 <button on:click=move |_| dec.dispatch(())>"-1"</button>
-                <span>"Multiplayer Value: " {move || multiplayer_value().unwrap_or_default().to_string()}</span>
+                <span>"Multiplayer Value: " {move || multiplayer_value.get().unwrap_or_default().to_string()}</span>
                 <button on:click=move |_| inc.dispatch(())>"+1"</button>
             </div>
         </div>

examples/counter_isomorphic/src/lib.rs

@@ -14,7 +14,7 @@ cfg_if! {
             _ = console_log::init_with_level(log::Level::Debug);
             console_error_panic_hook::set_once();
 
-            leptos::hydrate(body().unwrap(), |cx| {
+            mount_to_body(|cx| {
                 view! { cx,  <Counters/> }
             });
         }

examples/counter_isomorphic/src/main.rs

@@ -9,7 +9,7 @@ cfg_if! {
         use actix_files::{Files};
         use actix_web::*;
         use crate::counters::*;
-        use std::{net::SocketAddr, env};
+        use leptos_actix::{generate_route_list, LeptosRoutes};
 
         #[get("/api/events")]
         async fn counter_events() -> impl Responder {
@@ -30,18 +30,23 @@ cfg_if! {
 
         #[actix_web::main]
         async fn main() -> std::io::Result<()> {
-            let addr = SocketAddr::from(([127,0,0,1],3000));
+
             crate::counters::register_server_functions();
 
+            let conf = get_configuration(Some("Cargo.toml")).await.unwrap();
+            let addr = conf.leptos_options.site_address.clone();
+            let routes = generate_route_list(|cx| view! { cx, <Counters/> });
+
             HttpServer::new(move || {
-                let render_options: RenderOptions = RenderOptions::builder().pkg_path("/pkg/leptos_counter_isomorphic").reload_port(3001).socket_address(addr.clone()).environment(&env::var("RUST_ENV")).build();
-                render_options.write_to_file();
+                let leptos_options = &conf.leptos_options;
+                let site_root = &leptos_options.site_root;
+
                 App::new()
-                    .service(Files::new("/pkg", "./pkg"))
                     .service(counter_events)
                     .route("/api/{tail:.*}", leptos_actix::handle_server_fns())
-                    .route("/{tail:.*}", leptos_actix::render_app_to_stream(render_options, |cx| view! { cx, <Counters/> }))
-                //.wrap(middleware::Compress::default())
+                    .leptos_routes(leptos_options.to_owned(), routes.to_owned(), |cx| view! { cx, <Counters/> })
+                    .service(Files::new("/", &site_root))
+                    //.wrap(middleware::Compress::default())
             })
             .bind(&addr)?
             .run()
@@ -51,7 +56,7 @@ cfg_if! {
 
     // client-only stuff for Trunk
     else {
-        use leptos_counter_isomorphic::counters::*;
+        use counter_isomorphic::counters::*;
 
         pub fn main() {
             _ = console_log::init_with_level(log::Level::Debug);

examples/counters-stable/README.md

@@ -1,10 +0,0 @@
-# Leptos Counters Example on Rust Stable
-
-This example showcases a basic Leptos app with many counters. It is a good example of how to setup a basic reactive app with signals and effects, and how to interact with browser events. Unlike the other counters example, it will compile on Rust stable, because it has the `stable` feature enabled.
-
-## Client Side Rendering
-
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)

examples/counters/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/counters/README.md

@@ -1,10 +0,0 @@
-# Leptos Counters Example
-
-This example showcases a basic Leptos app with many counters. It is a good example of how to set up a basic reactive app with signals and effects, and how to interact with browser events.
-
-## Client Side Rendering
-
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)

examples/counters/src/lib.rs

@@ -11,7 +11,7 @@ struct CounterUpdater {
 }
 
 #[component]
-pub fn Counters(cx: Scope) -> web_sys::Element {
+pub fn Counters(cx: Scope) -> impl IntoView {
     let (next_counter_id, set_next_counter_id) = create_signal(cx, 0);
     let (counters, set_counters) = create_signal::<CounterHolder>(cx, vec![]);
     provide_context(cx, CounterUpdater { set_counters });
@@ -39,7 +39,7 @@ pub fn Counters(cx: Scope) -> web_sys::Element {
     };
 
     view! { cx,
-        <div>
+        <>
             <button on:click=add_counter>
                 "Add Counter"
             </button>
@@ -63,16 +63,18 @@ pub fn Counters(cx: Scope) -> web_sys::Element {
                 " counters."
             </p>
             <ul>
-                <For each=counters key=|counter| counter.0>{
-                    |cx, (id, (value, set_value)): &(usize, (ReadSignal<i32>, WriteSignal<i32>))| {
+                <For
+                    each=counters
+                    key=|counter| counter.0
+                    view=move |(id, (value, set_value)): (usize, (ReadSignal<i32>, WriteSignal<i32>))| {
                         view! {
                             cx,
-                            <Counter id=*id value=*value set_value=*set_value/>
+                            <Counter id value set_value/>
                         }
                     }
-                }</For>
+                />
             </ul>
-        </div>
+        </>
     }
 }
 
@@ -82,7 +84,7 @@ fn Counter(
     id: usize,
     value: ReadSignal<i32>,
     set_value: WriteSignal<i32>,
-) -> web_sys::Element {
+) -> impl IntoView {
     let CounterUpdater { set_counters } = use_context(cx).unwrap_throw();
 
     let input = move |ev| set_value(event_target_value(&ev).parse::<i32>().unwrap_or_default());

examples/counters/tests/mod.rs

@@ -1,7 +1,7 @@
 use wasm_bindgen_test::*;
 
 wasm_bindgen_test_configure!(run_in_browser);
-use leptos::{wasm_bindgen::JsValue, *};
+use leptos::*;
 use web_sys::HtmlElement;
 
 use counters::{Counters, CountersProps};
@@ -75,37 +75,39 @@ fn inc() {
         dec_button.click();
     }
 
-    // we can use RSX in test comparisons!
-    // note that if RSX template creation is bugged, this probably won't catch it
-    // (because the same bug will be reproduced in both sides of the assertion)
-    // so I use HTML tests for most internal testing like this
-    // but in user-land testing, RSX comparanda are cool
-    assert_eq!(
-        div.outer_html(),
-        view! { cx,
-            <div>
-            <button>"Add Counter"</button>
-            <button>"Add 1000 Counters"</button>
-            <button>"Clear Counters"</button>
-            <p>"Total: "<span>"3"</span>" from "<span>"2"</span>" counters."</p>
-            <ul>
-                <li>
-                    <button>"-1"</button>
-                    <input type="text"/>
-                    <span>"1"</span>
-                    <button>"+1"</button>
-                    <button>"x"</button>
-                </li>
-                <li>
-                    <button>"-1"</button>
-                    <input type="text"/>
-                    <span>"2"</span>
-                    <button>"+1"</button>
-                    <button>"x"</button>
-                </li>
-            </ul>
-            </div>
-        }
-        .outer_html()
-    );
+    run_scope(create_runtime(), move |cx| {
+        // we can use RSX in test comparisons!
+        // note that if RSX template creation is bugged, this probably won't catch it
+        // (because the same bug will be reproduced in both sides of the assertion)
+        // so I use HTML tests for most internal testing like this
+        // but in user-land testing, RSX comparanda are cool
+        assert_eq!(
+            div.outer_html(),
+            view! { cx,
+                <div>
+                    <button>"Add Counter"</button>
+                    <button>"Add 1000 Counters"</button>
+                    <button>"Clear Counters"</button>
+                    <p>"Total: "<span>"3"</span>" from "<span>"2"</span>" counters."</p>
+                    <ul>
+                        <li>
+                            <button>"-1"</button>
+                            <input type="text"/>
+                            <span>"1"</span>
+                            <button>"+1"</button>
+                            <button>"x"</button>
+                        </li>
+                        <li>
+                            <button>"-1"</button>
+                            <input type="text"/>
+                            <span>"2"</span>
+                            <button>"+1"</button>
+                            <button>"x"</button>
+                        </li>
+                    </ul>
+                </div>
+            }
+            .outer_html()
+        );
+    });
 }

examples/counters_stable/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+stable", "build-all-features"]
+install_crate = "cargo-all-features"

examples/counters_stable/src/main.rs

@@ -17,7 +17,7 @@ struct CounterUpdater {
 }
 
 #[component]
-pub fn Counters(cx: Scope) -> web_sys::Element {
+pub fn Counters(cx: Scope) -> impl IntoView {
     let (next_counter_id, set_next_counter_id) = create_signal(cx, 0);
     let (counters, set_counters) = create_signal::<CounterHolder>(cx, vec![]);
     provide_context(cx, CounterUpdater { set_counters });
@@ -69,14 +69,16 @@ pub fn Counters(cx: Scope) -> web_sys::Element {
                 " counters."
             </p>
             <ul>
-                <For each={move || counters.get()} key={|counter| counter.0}>{
-                    |cx, (id, (value, set_value)): &(usize, (ReadSignal<i32>, WriteSignal<i32>))| {
+                <For
+                    each={move || counters.get()}
+                    key={|counter| counter.0}
+                    view=move |(id, (value, set_value))| {
                         view! {
                             cx,
-                            <Counter id=*id value=*value set_value=*set_value/>
+                            <Counter id value set_value/>
                         }
                     }
-                }</For>
+                />
             </ul>
         </div>
     }
@@ -88,14 +90,14 @@ fn Counter(
     id: usize,
     value: ReadSignal<i32>,
     set_value: WriteSignal<i32>,
-) -> web_sys::Element {
+) -> impl IntoView {
     let CounterUpdater { set_counters } = use_context(cx).unwrap_throw();
 
     let input = move |ev| set_value.set(event_target_value(&ev).parse::<i32>().unwrap_or_default());
 
     view! { cx,
         <li>
-            <button on:click={move |_| set_value.update(move |value| *value -= 1)}>"-1"</button>
+            <button on:click=move |_| set_value.update(move |value| *value -= 1)>"-1"</button>
             <input type="text"
                 prop:value={move || value.get().to_string()}
                 on:input=input

examples/fetch/Cargo.toml

@@ -11,7 +11,7 @@ serde = { version = "1", features = ["derive"] }
 log = "0.4"
 console_log = "0.2"
 console_error_panic_hook = "0.1.7"
-gloo-timers = { version = "0.2", features = ["futures"] }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3.0"
+

examples/fetch/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/fetch/README.md

@@ -1,10 +0,0 @@
-# Client Side Fetch
-
-This example shows how to fetch data from the client in WebAssembly.
-
-## Client Side Rendering
-
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)

examples/fetch/index.html

@@ -2,6 +2,7 @@
 <html>
 	<head>
 		<link data-trunk rel="rust" data-wasm-opt="z"/>
+		<link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico"/>
 	</head>
 	<style>
 		img {

examples/fetch/src/lib.rs

@@ -1,6 +1,3 @@
-use std::time::Duration;
-
-use gloo_timers::future::TimeoutFuture;
 use leptos::*;
 use serde::{Deserialize, Serialize};
 
@@ -10,10 +7,6 @@ pub struct Cat {
 }
 
 async fn fetch_cats(count: u32) -> Result<Vec<String>, ()> {
-    // artificial delay
-    // the cat API is too fast to show the transition
-    TimeoutFuture::new(500).await;
-
     if count > 0 {
         let res = reqwasm::http::Request::get(&format!(
             "https://api.thecatapi.com/v1/images/search?limit={}",
@@ -34,50 +27,41 @@ async fn fetch_cats(count: u32) -> Result<Vec<String>, ()> {
     }
 }
 
-pub fn fetch_example(cx: Scope) -> web_sys::Element {
+pub fn fetch_example(cx: Scope) -> impl IntoView {
     let (cat_count, set_cat_count) = create_signal::<u32>(cx, 1);
     let cats = create_resource(cx, cat_count, |count| fetch_cats(count));
-    let (pending, set_pending) = create_signal(cx, false);
 
-    view! { cx,
+    view! { cx, 
         <div>
             <label>
                 "How many cats would you like?"
                 <input type="number"
-                    value={move || cat_count.get().to_string()}
+                    prop:value={move || cat_count.get().to_string()}
                     on:input=move |ev| {
                         let val = event_target_value(&ev).parse::<u32>().unwrap_or(0);
                         set_cat_count(val);
                     }
                 />
             </label>
-            {move || pending().then(|| view! { cx, <p>"Loading more cats..."</p> })}
-            <div>
-                // <Transition/> holds the previous value while new async data is being loaded
-                // Switch the <Transition/> to <Suspense/> to fall back to "Loading..." every time
-                <Transition
-                    fallback={"Loading (Suspense Fallback)...".to_string()}
-                    set_pending
-                >
-                    {move || {
-                            cats.read().map(|data| match data {
-                                Err(_) => view! { cx,  <pre>"Error"</pre> },
-                                Ok(cats) => view! { cx,
-                                    <div>{
-                                        cats.iter()
-                                            .map(|src| {
-                                                view! { cx,
-                                                    <img src={src}/>
-                                                }
-                                            })
-                                            .collect::<Vec<_>>()
-                                    }</div>
-                                },
-                            })
-                        }
+            <Transition fallback=move || view! { cx, <div>"Loading (Suspense Fallback)..."</div>}>
+                {move || {
+                        cats.read().map(|data| match data {
+                            Err(_) => view! { cx, <pre>"Error"</pre> }.into_view(cx),
+                            Ok(cats) => view! { cx, 
+                                <div>{
+                                    cats.iter()
+                                        .map(|src| {
+                                            view! { cx, 
+                                                <img src={src}/>
+                                            }
+                                        })
+                                        .collect::<Vec<_>>()
+                                }</div>
+                            }.into_view(cx),
+                        })
                     }
-                </Transition>
-            </div>
+                }
+            </Transition>
         </div>
     }
 }

examples/gtk/README.md

@@ -1,8 +0,0 @@
-# Leptos in a GTK App
-
-This example creates a basic GTK app that uses Leptos’s reactive primitives.
-
-## Build and Run
-
-Unlike the other examples, this has a variety of build prerequisites that are out of scope of this crate. More detail on that can be found [here](https://gtk-rs.org/gtk4-rs/stable/latest/book/installation.html). The example comes from [here](https://gtk-rs.org/gtk4-rs/stable/latest/book/hello_world.html) and should be
-runnable with `cargo run` if you have the GTK prerequisites installed.

examples/gtk/src/main.rs

@@ -6,7 +6,7 @@ const APP_ID: &str = "dev.leptos.Counter";
 
 // Basic GTK app setup from https://gtk-rs.org/gtk4-rs/stable/latest/book/hello_world.html
 fn main() {
-    _ = create_scope(create_runtime(), |cx| {
+    _ = create_scope(|cx| {
         // Create a new application
         let app = Application::builder().application_id(APP_ID).build();
 

examples/hackernews-axum/Cargo.toml

@@ -1,51 +0,0 @@
-[package]
-name = "leptos-hackernews-axum"
-version = "0.1.0"
-edition = "2021"
-
-[lib]
-crate-type = ["cdylib", "rlib"]
-
-[dependencies]
-anyhow = "1.0.66"
-console_log = "0.2.0"
-console_error_panic_hook = "0.1.7"
-futures = "0.3.25"
-cfg-if = "1.0.0"
-leptos = { path = "../../leptos", default-features = false, features = [
-	"serde",
-] }
-leptos_axum = { path = "../../integrations/axum", optional = true }
-leptos_meta = { path = "../../meta", default-features = false }
-leptos_router = { path = "../../router", default-features = false }
-log = "0.4.17"
-simple_logger = "4.0.0"
-serde = { version = "1.0.148", features = ["derive"] }
-serde_json = "1.0.89"
-gloo-net = { version = "0.2.5", features = ["http"] }
-reqwest = { version = "0.11.13", features = ["json"] }
-axum = { version = "0.6.1", optional = true }
-tower = { version = "0.4.13", optional = true }
-tower-http = { version = "0.3.4", features = ["fs"], optional = true }
-tokio = { version = "1.22.0", features = ["full"], optional = true }
-http = { version = "0.2.8", optional = true }
-
-[features]
-default = ["csr"]
-csr = ["leptos/csr", "leptos_meta/csr", "leptos_router/csr"]
-hydrate = ["leptos/hydrate", "leptos_meta/hydrate", "leptos_router/hydrate"]
-ssr = [
-	"dep:axum",
-	"dep:tower",
-	"dep:tower-http",
-	"dep:tokio",
-	"dep:http",
-	"leptos/ssr",
-	"leptos_axum",
-	"leptos_meta/ssr",
-	"leptos_router/ssr",
-]
-
-[package.metadata.cargo-all-features]
-denylist = ["axum", "tower", "tower-http", "tokio", "http", "leptos_axum"]
-skip_feature_sets = [["csr", "ssr"], ["csr", "hydrate"], ["ssr", "hydrate"]]

examples/hackernews-axum/README.md

@@ -1,29 +0,0 @@
-# Leptos Hacker News Example with Axum
-
-This example creates a basic clone of the Hacker News site. It showcases Leptos' ability to create both a client-side rendered app, and a server side rendered app with hydration, in a single repository. This repo differs from the main Hacker News example by using Axum as it's server.
-
-## Client Side Rendering
-
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)
-
-## Server Side Rendering With Hydration
-
-To run it as a server side app with hydration, first you should run
-
-```bash
-wasm-pack build --target=web --no-default-features --features=hydrate
-```
-
-to generate the WebAssembly to hydrate the HTML that is generated on the server.
-
-Then run the server with `cargo run` to serve the server side rendered HTML and the WASM bundle for hydration.
-
-```bash
-cargo run --no-default-features --features=ssr
-```
-
-> Note that if your hydration code changes, you will have to rerun the wasm-pack command above
-> This should be temporary, and vastly improve once cargo-leptos becomes ready for prime time!

examples/hackernews-axum/src/main.rs

@@ -1,72 +0,0 @@
-use cfg_if::cfg_if;
-use leptos::*;
-
-// boilerplate to run in different modes
-cfg_if! {
-if #[cfg(feature = "ssr")] {
-    use axum::{
-        routing::{get},
-        Router,
-        error_handling::HandleError,
-    };
-    use http::StatusCode;
-    use std::net::SocketAddr;
-    use tower_http::services::ServeDir;
-    use std::env;
-
-    #[tokio::main]
-    async fn main() {
-        use leptos_hackernews_axum::*;
-        let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
-
-        log::debug!("serving at {addr}");
-
-        simple_logger::init_with_level(log::Level::Debug).expect("couldn't initialize logging");
-
-        // These are Tower Services that will serve files from the static and pkg repos.
-        // HandleError is needed as Axum requires services to implement Infallible Errors
-        // because all Errors are converted into Responses
-        let static_service = HandleError::new( ServeDir::new("./static"), handle_file_error);
-        let pkg_service =HandleError::new( ServeDir::new("./pkg"), handle_file_error);
-
-        /// Convert the Errors from ServeDir to a type that implements IntoResponse
-        async fn handle_file_error(err: std::io::Error) -> (StatusCode, String) {
-            (
-                StatusCode::NOT_FOUND,
-                format!("File Not Found: {}", err),
-            )
-        }
-
-        let render_options: RenderOptions = RenderOptions::builder().pkg_path("/pkg/leptos_hackernews_axum").socket_address(addr).reload_port(3001).environment(&env::var("RUST_ENV")).build();
-        render_options.write_to_file();
-        // build our application with a route
-        let app = Router::new()
-        // `GET /` goes to `root`
-        .nest_service("/pkg", pkg_service)
-        .nest_service("/static", static_service)
-        .fallback(leptos_axum::render_app_to_stream(render_options, |cx| view! { cx, <App/> }));
-
-        // run our app with hyper
-        // `axum::Server` is a re-export of `hyper::Server`
-        log!("listening on {}", addr);
-        axum::Server::bind(&addr)
-            .serve(app.into_make_service())
-            .await
-            .unwrap();
-    }
-}
-
-    // client-only stuff for Trunk
-    else {
-        use leptos_hackernews_axum::*;
-
-        pub fn main() {
-            console_error_panic_hook::set_once();
-            _ = console_log::init_with_level(log::Level::Debug);
-            console_error_panic_hook::set_once();
-            mount_to_body(|cx| {
-                view! { cx, <App/> }
-            });
-        }
-    }
-}

examples/hackernews-axum/src/routes/story.rs

@@ -1,103 +0,0 @@
-use crate::api;
-use leptos::*;
-use leptos_router::*;
-
-#[component]
-pub fn Story(cx: Scope) -> Element {
-    let params = use_params_map(cx);
-    let story = create_resource(
-        cx,
-        move || params().get("id").cloned().unwrap_or_default(),
-        move |id| async move { api::fetch_api::<api::Story>(&api::story(&format!("item/{id}"))).await },
-    );
-
-    view! { cx,
-        <div>
-            {move || story.read().map(|story| match story {
-                None => view! { cx,  <div class="item-view">"Error loading this story."</div> },
-                Some(story) => view! { cx,
-                    <div class="item-view">
-                        <div class="item-view-header">
-                        <a href=story.url target="_blank">
-                            <h1>{story.title}</h1>
-                        </a>
-                        <span class="host">
-                            "("{story.domain}")"
-                        </span>
-                        {story.user.map(|user| view! { cx,  <p class="meta">
-                            {story.points}
-                            " points | by "
-                            <A href=format!("/users/{}", user)>{user.clone()}</A>
-                            {format!(" {}", story.time_ago)}
-                        </p>})}
-                        </div>
-                        <div class="item-view-comments">
-                        <p class="item-view-comments-header">
-                            {if story.comments_count.unwrap_or_default() > 0 {
-                                format!("{} comments", story.comments_count.unwrap_or_default())
-                            } else {
-                                "No comments yet.".into()
-                            }}
-                        </p>
-                        <ul class="comment-children">
-                            <For each=move || story.comments.clone().unwrap_or_default() key=|comment| comment.id>
-                                {move |cx, comment: &api::Comment| view! { cx,  <Comment comment=comment.clone() /> }}
-                            </For>
-                        </ul>
-                    </div>
-                </div>
-            }})}
-        </div>
-    }
-}
-
-#[component]
-pub fn Comment(cx: Scope, comment: api::Comment) -> Element {
-    let (open, set_open) = create_signal(cx, true);
-
-    view! { cx,
-        <li class="comment">
-        <div class="by">
-            <A href=format!("/users/{}", comment.user.clone().unwrap_or_default())>{comment.user.clone()}</A>
-            {format!(" {}", comment.time_ago)}
-        </div>
-        <div class="text" inner_html=comment.content></div>
-        {(!comment.comments.is_empty()).then(|| {
-            view! { cx,
-                <div>
-                    <div class="toggle" class:open=open>
-                        <a on:click=move |_| set_open.update(|n| *n = !*n)>
-                            {
-                                let comments_len = comment.comments.len();
-                                move || if open() {
-                                    "[-]".into()
-                                } else {
-                                    format!("[+] {}{} collapsed", comments_len, pluralize(comments_len))
-                                }
-                            }
-                        </a>
-                    </div>
-                    {move || open().then({
-                        let comments = comment.comments.clone();
-                        move || view! { cx,
-                            <ul class="comment-children">
-                                <For each=move || comments.clone() key=|comment| comment.id>
-                                    {|cx, comment: &api::Comment| view! { cx, <Comment comment=comment.clone() /> }}
-                                </For>
-                            </ul>
-                        }
-                    })}
-                </div>
-            }
-        })}
-        </li>
-    }
-}
-
-fn pluralize(n: usize) -> &'static str {
-    if n == 1 {
-        " reply"
-    } else {
-        " replies"
-    }
-}

examples/hackernews-axum/src/routes/users.rs

@@ -1,39 +0,0 @@
-use crate::api::{self, User};
-use leptos::*;
-use leptos_router::*;
-
-#[component]
-pub fn User(cx: Scope) -> Element {
-    let params = use_params_map(cx);
-    let user = create_resource(
-        cx,
-        move || params().get("id").cloned().unwrap_or_default(),
-        move |id| async move { api::fetch_api::<User>(&api::user(&id)).await },
-    );
-    view! { cx,
-        <div class="user-view">
-            {move || user.read().map(|user| match user {
-                None => view! { cx,  <h1>"User not found."</h1> },
-                Some(user) => view! { cx,
-                    <div>
-                        <h1>"User: " {&user.id}</h1>
-                        <ul class="meta">
-                            <li>
-                                <span class="label">"Created: "</span> {user.created}
-                            </li>
-                            <li>
-                            <span class="label">"Karma: "</span> {user.karma}
-                            </li>
-                            {user.about.as_ref().map(|about| view! { cx,  <li inner_html=about class="about"></li> })}
-                        </ul>
-                        <p class="links">
-                            <a href=format!("https://news.ycombinator.com/submitted?id={}", user.id)>"submissions"</a>
-                            " | "
-                            <a href=format!("https://news.ycombinator.com/threads?id={}", user.id)>"comments"</a>
-                        </p>
-                    </div>
-                }
-            })}
-        </div>
-    }
-}

examples/hackernews/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "leptos-hackernews"
+name = "hackernews"
 version = "0.1.0"
 edition = "2021"
 
@@ -14,21 +14,22 @@ console_log = "0.2"
 console_error_panic_hook = "0.1"
 futures = "0.3"
 cfg-if = "1"
-leptos = { version = "0.0.20", default-features = false, features = ["serde"] }
-leptos_meta = { version = "0.0", default-features = false }
-leptos_actix = { version = "0.0.2", default-features = false, optional = true }
-leptos_router = { version = "0.0", default-features = false }
+leptos = { path = "../../leptos", default-features = false, features = ["serde"] }
+leptos_meta = { path = "../../meta", default-features = false }
+leptos_actix = { path = "../../integrations/actix", default-features = false, optional = true }
+leptos_router = { path = "../../router", default-features = false }
 log = "0.4"
-simple_logger = "2"
+simple_logger = "4.0.0"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 gloo-net = { version = "0.2", features = ["http"] }
 reqwest = { version = "0.11", features = ["json"] }
 # openssl = { version = "0.10", features = ["v110"] }
+wasm-bindgen = "0.2"
 web-sys = { version = "0.3", features = ["AbortController", "AbortSignal"] }
+tracing = "0.1"
 
 [features]
-default = ["csr"]
 csr = ["leptos/csr", "leptos_meta/csr", "leptos_router/csr"]
 hydrate = ["leptos/hydrate", "leptos_meta/hydrate", "leptos_router/hydrate"]
 ssr = [
@@ -43,3 +44,47 @@ ssr = [
 [package.metadata.cargo-all-features]
 denylist = ["actix-files", "actix-web", "leptos_actix"]
 skip_feature_sets = [["csr", "ssr"], ["csr", "hydrate"], ["ssr", "hydrate"]]
+
+[package.metadata.leptos]
+# The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name   
+output-name = "hackernews"	
+# The site root folder is where cargo-leptos generate all output. WARNING: all content of this folder will be erased on a rebuild. Use it in your server setup.
+site-root = "target/site"
+# The site-root relative folder where all compiled output (JS, WASM and CSS) is written
+# Defaults to pkg	
+site-pkg-dir = "pkg" 	
+# [Optional] The source CSS file. If it ends with .sass or .scss then it will be compiled by dart-sass into CSS. The CSS is optimized by Lightning CSS before being written to <site-root>/<site-pkg>/app.css
+style-file = "./style.css"
+# [Optional] Files in the asset-dir will be copied to the site-root directory
+assets-dir = "public"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-address = "127.0.0.1:3000"	
+# The port to use for automatic reload monitoring
+reload-port = 3001	
+# [Optional] Command to use when running end2end tests. It will run in the end2end dir.
+end2end-cmd = "npx playwright test"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults" 	
+# Set by cargo-leptos watch when building with tha tool. Controls whether autoreload JS will be included in the head
+watch = false 	
+# The environment Leptos will run in, usually either "DEV" or "PROD"
+env = "DEV"
+# The features to use when compiling the bin target
+#
+# Optional. Can be over-ridden with the command line parameter --bin-features
+bin-features = ["ssr"]
+
+# If the --no-default-features flag should be used when compiling the bin target
+#
+# Optional. Defaults to false.
+bin-default-features = false
+
+# The features to use when compiling the lib target
+#
+# Optional. Can be over-ridden with the command line parameter --lib-features
+lib-features = ["hydrate"]
+
+# If the --no-default-features flag should be used when compiling the lib target
+#
+# Optional. Defaults to false.
+lib-default-features = false

examples/hackernews/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/hackernews/README.md

@@ -1,29 +1,40 @@
 # Leptos Hacker News Example
 
-This example creates a basic clone of the Hacker News site. It showcases Leptos’s ability to create both a client-side rendered app, and a server side rendered app with hydration, in a single repository. It uses Actix as its backend.
+This example creates a basic clone of the Hacker News site. It showcases Leptos' ability to create both a client-side rendered app, and a server side rendered app with hydration, in a single repository
 
 ## Client Side Rendering
+To run it as a Client Side App, you can issue  `trunk serve --open` in the root. This will build the entire
+app into one CSR bundle. Make sure you have trunk installed with `cargo install trunk`.
 
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle.
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)
-
-## Server Side Rendering With Hydration
-
-To run it as a server side app with hydration, first you should run
+## Server Side Rendering with cargo-leptos
+cargo-leptos is now the easiest and most featureful way to build server side rendered apps with hydration. It provides automatic recompilation of client and server code, wasm optimisation, CSS minification, and more! Check out more about it [here](https://github.com/akesson/cargo-leptos)
 
+1. Install cargo-leptos
 ```bash
-wasm-pack build --target=web --no-default-features --features=hydrate
+cargo install --locked cargo-leptos
+``` 
+2. Build the site in watch mode, recompiling on file changes
+```bash
+cargo leptos watch
+```
+3. When ready to deploy, run
+```bash
+cargo leptos build --release
 ```
 
-to generate the WebAssembly to hydrate the HTML that is generated on the server.
-
-Then run the server with `cargo run` to serve the server side rendered HTML and the WASM bundle for hydration.
+## Server Side Rendering without cargo-leptos
+To run it as a server side app with hydration, you'll need to have wasm-pack installed.
 
+0. Edit the `[package.metadata.leptos]` section and set `site-root` to `"pkg"`. You'll also want to change the path of the `<StyleSheet / >` component in the root component to point towards the CSS file in the root. This tells leptos that the WASM/JS files generated by wasm-pack are available at `./pkg` and that the CSS files are no longer processed by cargo-leptos. Building to alternative folders is not supported at this time.
+1. Install wasm-pack
+```bash
+cargo install wasm-pack
+```
+2. Build the Webassembly used to hydrate the HTML from the server
+```bash
+wasm-pack build --target=web --debug --no-default-features --features=hydrate
+```
+3. Run the server to serve the Webassembly, JS, and HTML 
 ```bash
 cargo run --no-default-features --features=ssr
 ```
-
-> Note that if your hydration code changes, you will have to rerun the wasm-pack command above
-> This should be temporary, and vastly improve once cargo-leptos becomes ready for prime time!

examples/hackernews/src/api.rs

@@ -1,4 +1,4 @@
-use leptos::{on_cleanup, Scope, Serializable};
+use leptos::{Scope, Serializable};
 use serde::{Deserialize, Serialize};
 
 pub fn story(path: &str) -> String {
@@ -29,7 +29,7 @@ where
 
     // abort in-flight requests if the Scope is disposed
     // i.e., if we've navigated away from this page
-    on_cleanup(cx, move || {
+    leptos::on_cleanup(cx, move || {
         if let Some(abort_controller) = abort_controller {
             abort_controller.abort()
         }
@@ -38,7 +38,7 @@ where
 }
 
 #[cfg(feature = "ssr")]
-pub async fn fetch_api<T>(cx: Scope, path: &str) -> Option<T>
+pub async fn fetch_api<T>(_cx: Scope, path: &str) -> Option<T>
 where
     T: Serializable,
 {

examples/hackernews/src/lib.rs

@@ -1,5 +1,5 @@
 use cfg_if::cfg_if;
-use leptos::*;
+use leptos::{component, view, IntoView, Scope};
 use leptos_meta::*;
 use leptos_router::*;
 mod api;
@@ -10,25 +10,25 @@ use routes::story::*;
 use routes::users::*;
 
 #[component]
-pub fn App(cx: Scope) -> Element {
-    provide_context(cx, MetaContext::default());
-
+pub fn App(cx: Scope) -> impl IntoView {
+    provide_meta_context(cx);
     view! {
         cx,
-        <div>
-            <Stylesheet href="/style.css"/>
+        <>
+            <Stylesheet id="leptos" href="/pkg/hackernews.css"/>
+            <Link rel="shortcut icon" type_="image/ico" href="/favicon.ico"/>
             <Meta name="description" content="Leptos implementation of a HackerNews demo."/>
             <Router>
                 <Nav />
                 <main>
                     <Routes>
-                        <Route path="users/:id" element=|cx| view! { cx,  <User/> }/>
-                        <Route path="stories/:id" element=|cx| view! { cx,  <Story/> }/>
-                        <Route path="*stories" element=|cx| view! { cx,  <Stories/> }/>
+                        <Route path="users/:id" view=|cx| view! { cx,  <User/> }/>
+                        <Route path="stories/:id" view=|cx| view! { cx,  <Story/> }/>
+                        <Route path=":stories?" view=|cx| view! { cx,  <Stories/> }/>
                     </Routes>
                 </main>
             </Router>
-        </div>
+        </>
     }
 }
 
@@ -41,7 +41,7 @@ cfg_if! {
         pub fn hydrate() {
             _ = console_log::init_with_level(log::Level::Debug);
             console_error_panic_hook::set_once();
-            leptos::hydrate(body().unwrap(), move |cx| {
+            leptos::mount_to_body(move |cx| {
                 view! { cx, <App/> }
             });
         }

examples/hackernews/src/main.rs

@@ -7,26 +7,35 @@ cfg_if! {
     if #[cfg(feature = "ssr")] {
         use actix_files::{Files};
         use actix_web::*;
-        use leptos_hackernews::*;
-        use std::{net::SocketAddr, env};
+        use hackernews::{App,AppProps};
+        use leptos_actix::{LeptosRoutes, generate_route_list};
 
         #[get("/style.css")]
         async fn css() -> impl Responder {
             actix_files::NamedFile::open_async("./style.css").await
         }
+        #[get("/favicon.ico")]
+        async fn favicon() -> impl Responder {
+            actix_files::NamedFile::open_async("./target/site//favicon.ico").await
+        }
 
         #[actix_web::main]
         async fn main() -> std::io::Result<()> {
-            let addr = SocketAddr::from(([127,0,0,1],3000));
+            let conf = get_configuration(Some("Cargo.toml")).await.unwrap();
+            let addr = conf.leptos_options.site_address.clone();
+            // Generate the list of routes in your Leptos App
+            let routes = generate_route_list(|cx| view! { cx, <App/> });
 
             HttpServer::new(move || {
-                let render_options: RenderOptions = RenderOptions::builder().pkg_path("/pkg/leptos_hackernews").reload_port(3001).socket_address(addr.clone()).environment(&env::var("RUST_ENV")).build();
-                render_options.write_to_file();
+                let leptos_options = &conf.leptos_options;
+                let site_root = &leptos_options.site_root;
+
                 App::new()
-                    .service(Files::new("/pkg", "./pkg"))
                     .service(css)
+                    .service(favicon)
                     .route("/api/{tail:.*}", leptos_actix::handle_server_fns())
-                    .route("/{tail:.*}", leptos_actix::render_app_to_stream(render_options, |cx| view! { cx, <App/> }))
+                    .leptos_routes(leptos_options.to_owned(), routes.to_owned(), |cx| view! { cx, <App/> })
+                    .service(Files::new("/", &site_root))
                 //.wrap(middleware::Compress::default())
             })
             .bind(&addr)?

examples/hackernews/src/routes/nav.rs

@@ -1,12 +1,12 @@
-use leptos::*;
+use leptos::{component, Scope, IntoView, view};
 use leptos_router::*;
 
 #[component]
-pub fn Nav(cx: Scope) -> Element {
+pub fn Nav(cx: Scope) -> impl IntoView {
     view! { cx,
         <header class="header">
             <nav class="inner">
-                <A href="/" class="home".to_string()>
+                <A href="/">
                     <strong>"HN"</strong>
                 </A>
                 <A href="/new">

examples/hackernews/src/routes/stories.rs

@@ -14,7 +14,7 @@ fn category(from: &str) -> &'static str {
 }
 
 #[component]
-pub fn Stories(cx: Scope) -> Element {
+pub fn Stories(cx: Scope) -> impl IntoView {
     let query = use_query_map(cx);
     let params = use_params_map(cx);
     let page = move || {
@@ -54,14 +54,14 @@ pub fn Stories(cx: Scope) -> Element {
                             >
                                 "< prev"
                             </a>
-                        }
+                        }.into_any()
                     } else {
                         view! {
                             cx,
                             <span class="page-link disabled" aria-hidden="true">
                                 "< prev"
                             </span>
-                        }
+                        }.into_any()
                     }}
                 </span>
                 <span>"page " {page}</span>
@@ -79,24 +79,26 @@ pub fn Stories(cx: Scope) -> Element {
             <main class="news-list">
                 <div>
                     <Transition
-                        fallback=view! { cx,  <p>"Loading..."</p> }
-                        set_pending
+                        fallback=move || view! { cx,  <p>"Loading..."</p> }
+                        set_pending=set_pending.into()
                     >
                         {move || match stories.read() {
                             None => None,
-                            Some(None) => Some(view! { cx,  <p>"Error loading stories."</p> }),
+                            Some(None) => Some(view! { cx,  <p>"Error loading stories."</p> }.into_any()),
                             Some(Some(stories)) => {
                                 Some(view! { cx,
                                     <ul>
-                                        <For each=move || stories.clone() key=|story| story.id>{
-                                            move |cx: Scope, story: &api::Story| {
+                                        <For
+                                            each=move || stories.clone()
+                                            key=|story| story.id
+                                            view=move |story: api::Story| {
                                                 view! { cx,
-                                                    <Story story=story.clone() />
+                                                    <Story story/>
                                                 }
                                             }
-                                        }</For>
+                                        />
                                     </ul>
-                                })
+                                }.into_any())
                             }
                         }}
                     </Transition>
@@ -107,7 +109,7 @@ pub fn Stories(cx: Scope) -> Element {
 }
 
 #[component]
-fn Story(cx: Scope, story: api::Story) -> Element {
+fn Story(cx: Scope, story: api::Story) -> impl IntoView {
     view! { cx,
          <li class="news-item">
             <span class="score">{story.points}</span>
@@ -120,10 +122,10 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                             </a>
                             <span class="host">"("{story.domain}")"</span>
                         </span>
-                    }
+                    }.into_view(cx)
                 } else {
                     let title = story.title.clone();
-                    view! { cx,  <A href=format!("/stories/{}", story.id)>{title.clone()}</A> }
+                    view! { cx,  <A href=format!("/stories/{}", story.id)>{title.clone()}</A> }.into_view(cx)
                 }}
             </span>
             <br />
@@ -132,7 +134,7 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                     view! { cx,
                         <span>
                             {"by "}
-                            {story.user.map(|user| view ! { cx, <A href=format!("/users/{}", user)>{user.clone()}</A>})}
+                            {story.user.map(|user| view ! { cx, <A href=format!("/users/{user}")>{user.clone()}</A>})}
                             {format!(" {} | ", story.time_ago)}
                             <A href=format!("/stories/{}", story.id)>
                                 {if story.comments_count.unwrap_or_default() > 0 {
@@ -142,17 +144,15 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                                 }}
                             </A>
                         </span>
-                    }
+                    }.into_view(cx)
                 } else {
                     let title = story.title.clone();
-                    view! { cx,  <A href=format!("/item/{}", story.id)>{title.clone()}</A> }
+                    view! { cx,  <A href=format!("/item/{}", story.id)>{title.clone()}</A> }.into_view(cx)
                 }}
             </span>
             {(story.story_type != "link").then(|| view! { cx,
-                <span>
-                    //{" "}
-                    <span class="label">{story.story_type}</span>
-                </span>
+                " "
+                <span class="label">{story.story_type}</span>
             })}
         </li>
     }

examples/hackernews/src/routes/story.rs

@@ -4,7 +4,7 @@ use leptos_meta::*;
 use leptos_router::*;
 
 #[component]
-pub fn Story(cx: Scope) -> Element {
+pub fn Story(cx: Scope) -> impl IntoView {
     let params = use_params_map(cx);
     let story = create_resource(
         cx,
@@ -17,51 +17,56 @@ pub fn Story(cx: Scope) -> Element {
             }
         },
     );
-    let meta_description = move || story.read().and_then(|story| story.map(|story| story.title.clone())).unwrap_or_else(|| "Loading story...".to_string());
+    let meta_description = move || story.read().and_then(|story| story.map(|story| story.title)).unwrap_or_else(|| "Loading story...".to_string());
 
     view! { cx,
-        <div>
+        <>
             <Meta name="description" content=meta_description/>
-            {move || story.read().map(|story| match story {
-                None => view! { cx,  <div class="item-view">"Error loading this story."</div> },
-                Some(story) => view! { cx,
-                    <div class="item-view">
-                        <div class="item-view-header">
-                        <a href=story.url target="_blank">
-                            <h1>{story.title}</h1>
-                        </a>
-                        <span class="host">
-                            "("{story.domain}")"
-                        </span>
-                        {story.user.map(|user| view! { cx,  <p class="meta">
-                            {story.points}
-                            " points | by "
-                            <A href=format!("/users/{}", user)>{user.clone()}</A>
-                            {format!(" {}", story.time_ago)}
-                        </p>})}
+                <Suspense fallback=|| view! { cx, "Loading..." }>
+                    {move || story.read().map(|story| match story {
+                        None => view! { cx,  <div class="item-view">"Error loading this story."</div> },
+                        Some(story) => view! { cx,
+                            <div class="item-view">
+                                <div class="item-view-header">
+                                <a href=story.url target="_blank">
+                                    <h1>{story.title}</h1>
+                                </a>
+                                <span class="host">
+                                    "("{story.domain}")"
+                                </span>
+                                {story.user.map(|user| view! { cx,  <p class="meta">
+                                    {story.points}
+                                    " points | by "
+                                    <A href=format!("/users/{user}")>{user.clone()}</A>
+                                    {format!(" {}", story.time_ago)}
+                                </p>})}
+                                </div>
+                                <div class="item-view-comments">
+                                <p class="item-view-comments-header">
+                                    {if story.comments_count.unwrap_or_default() > 0 {
+                                        format!("{} comments", story.comments_count.unwrap_or_default())
+                                    } else {
+                                        "No comments yet.".into()
+                                    }}
+                                </p>
+                                <ul class="comment-children">
+                                    <For
+                                        each=move || story.comments.clone().unwrap_or_default()
+                                        key=|comment| comment.id
+                                        view=move |comment| view! { cx,  <Comment comment /> }
+                                    />
+                                </ul>
+                            </div>
                         </div>
-                        <div class="item-view-comments">
-                        <p class="item-view-comments-header">
-                            {if story.comments_count.unwrap_or_default() > 0 {
-                                format!("{} comments", story.comments_count.unwrap_or_default())
-                            } else {
-                                "No comments yet.".into()
-                            }}
-                        </p>
-                        <ul class="comment-children">
-                            <For each=move || story.comments.clone().unwrap_or_default() key=|comment| comment.id>
-                                {move |cx, comment: &api::Comment| view! { cx,  <Comment comment=comment.clone() /> }}
-                            </For>
-                        </ul>
-                    </div>
-                </div>
-            }})}
-        </div>
+                    }})
+                }
+            </Suspense>
+        </>
     }
 }
 
 #[component]
-pub fn Comment(cx: Scope, comment: api::Comment) -> Element {
+pub fn Comment(cx: Scope, comment: api::Comment) -> impl IntoView {
     let (open, set_open) = create_signal(cx, true);
 
     view! { cx,
@@ -90,9 +95,11 @@ pub fn Comment(cx: Scope, comment: api::Comment) -> Element {
                         let comments = comment.comments.clone();
                         move || view! { cx,
                             <ul class="comment-children">
-                                <For each=move || comments.clone() key=|comment| comment.id>
-                                    {|cx, comment: &api::Comment| view! { cx, <Comment comment=comment.clone() /> }}
-                                </For>
+                                <For
+                                    each=move || comments.clone()
+                                    key=|comment| comment.id
+                                    view=move |comment: api::Comment| view! { cx, <Comment comment /> }
+                                />
                             </ul>
                         }
                     })}

examples/hackernews/src/routes/users.rs

@@ -3,7 +3,7 @@ use leptos::*;
 use leptos_router::*;
 
 #[component]
-pub fn User(cx: Scope) -> Element {
+pub fn User(cx: Scope) -> impl IntoView {
     let params = use_params_map(cx);
     let user = create_resource(
         cx,
@@ -18,28 +18,30 @@ pub fn User(cx: Scope) -> Element {
     );
     view! { cx,
         <div class="user-view">
-            {move || user.read().map(|user| match user {
-                None => view! { cx,  <h1>"User not found."</h1> },
-                Some(user) => view! { cx,
-                    <div>
-                        <h1>"User: " {&user.id}</h1>
-                        <ul class="meta">
-                            <li>
-                                <span class="label">"Created: "</span> {user.created}
-                            </li>
-                            <li>
-                            <span class="label">"Karma: "</span> {user.karma}
-                            </li>
-                            {user.about.as_ref().map(|about| view! { cx,  <li inner_html=about class="about"></li> })}
-                        </ul>
-                        <p class="links">
-                            <a href=format!("https://news.ycombinator.com/submitted?id={}", user.id)>"submissions"</a>
-                            " | "
-                            <a href=format!("https://news.ycombinator.com/threads?id={}", user.id)>"comments"</a>
-                        </p>
-                    </div>
-                }
-            })}
+            <Suspense fallback=|| view! { cx, "Loading..." }>
+                {move || user.read().map(|user| match user {
+                    None => view! { cx,  <h1>"User not found."</h1> }.into_any(),
+                    Some(user) => view! { cx,
+                        <div>
+                            <h1>"User: " {&user.id}</h1>
+                            <ul class="meta">
+                                <li>
+                                    <span class="label">"Created: "</span> {user.created}
+                                </li>
+                                <li>
+                                <span class="label">"Karma: "</span> {user.karma}
+                                </li>
+                                {user.about.as_ref().map(|about| view! { cx,  <li inner_html=about class="about"></li> })}
+                            </ul>
+                            <p class="links">
+                                <a href=format!("https://news.ycombinator.com/submitted?id={}", user.id)>"submissions"</a>
+                                " | "
+                                <a href=format!("https://news.ycombinator.com/threads?id={}", user.id)>"comments"</a>
+                            </p>
+                        </div>
+                    }.into_any()
+                })}
+            </Suspense>
         </div>
     }
 }

examples/hackernews_axum/Cargo.toml

@@ -0,0 +1,98 @@
+[package]
+name = "hackernews_axum"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+anyhow = "1.0.66"
+console_log = "0.2.0"
+console_error_panic_hook = "0.1.7"
+futures = "0.3.25"
+cfg-if = "1.0.0"
+leptos = { path = "../../leptos", default-features = false, features = [
+	"serde",
+] }
+leptos_axum = { path = "../../integrations/axum", optional = true }
+leptos_meta = { path = "../../meta", default-features = false }
+leptos_router = { path = "../../router", default-features = false }
+log = "0.4.17"
+simple_logger = "4.0.0"
+serde = { version = "1.0.148", features = ["derive"] }
+serde_json = "1.0.89"
+gloo-net = { version = "0.2.5", features = ["http"] }
+reqwest = { version = "0.11.13", features = ["json"] }
+axum = { version = "0.6.1", optional = true }
+tower = { version = "0.4.13", optional = true }
+tower-http = { version = "0.3.4", features = ["fs"], optional = true }
+tokio = { version = "1.22.0", features = ["full"], optional = true }
+http = { version = "0.2.8", optional = true }
+web-sys = { version = "0.3", features = ["AbortController", "AbortSignal"] }
+wasm-bindgen = "0.2"
+tracing = "0.1"
+
+[features]
+default = ["csr"]
+csr = ["leptos/csr", "leptos_meta/csr", "leptos_router/csr"]
+hydrate = ["leptos/hydrate", "leptos_meta/hydrate", "leptos_router/hydrate"]
+ssr = [
+	"dep:axum",
+	"dep:tower",
+	"dep:tower-http",
+	"dep:tokio",
+	"dep:http",
+	"leptos/ssr",
+	"leptos_axum",
+	"leptos_meta/ssr",
+	"leptos_router/ssr",
+]
+
+[package.metadata.cargo-all-features]
+denylist = ["axum", "tower", "tower-http", "tokio", "http", "leptos_axum"]
+skip_feature_sets = [["csr", "ssr"], ["csr", "hydrate"], ["ssr", "hydrate"]]
+
+[package.metadata.leptos]
+# The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name   
+output-name = "hackernews_axum"	
+# The site root folder is where cargo-leptos generate all output. WARNING: all content of this folder will be erased on a rebuild. Use it in your server setup.
+site-root = "target/site"
+# The site-root relative folder where all compiled output (JS, WASM and CSS) is written
+# Defaults to pkg	
+site-pkg-dir = "pkg" 	
+# [Optional] The source CSS file. If it ends with .sass or .scss then it will be compiled by dart-sass into CSS. The CSS is optimized by Lightning CSS before being written to <site-root>/<site-pkg>/app.css
+style-file = "./style.css"
+# [Optional] Files in the asset-dir will be copied to the site-root directory
+assets-dir = "public"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-address = "127.0.0.1:3000"	
+# The port to use for automatic reload monitoring
+reload-port = 3001	
+# [Optional] Command to use when running end2end tests. It will run in the end2end dir.
+end2end-cmd = "npx playwright test"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults" 	
+# Set by cargo-leptos watch when building with tha tool. Controls whether autoreload JS will be included in the head
+watch = false 	
+# The environment Leptos will run in, usually either "DEV" or "PROD"
+env = "DEV"
+# The features to use when compiling the bin target
+#
+# Optional. Can be over-ridden with the command line parameter --bin-features
+bin-features = ["ssr"]
+
+# If the --no-default-features flag should be used when compiling the bin target
+#
+# Optional. Defaults to false.
+bin-default-features = false
+
+# The features to use when compiling the lib target
+#
+# Optional. Can be over-ridden with the command line parameter --lib-features
+lib-features = ["hydrate"]
+
+# If the --no-default-features flag should be used when compiling the lib target
+#
+# Optional. Defaults to false.
+lib-default-features = false

examples/hackernews_axum/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/hackernews_axum/README.md

@@ -0,0 +1,40 @@
+# Leptos Hacker News Example with Axum
+
+This example creates a basic clone of the Hacker News site. It showcases Leptos' ability to create both a client-side rendered app, and a server side rendered app with hydration, in a single repository. This repo differs from the main Hacker News example by using Axum as it's server.
+
+## Client Side Rendering
+To run it as a Client Side App, you can issue  `trunk serve --open` in the root. This will build the entire
+app into one CSR bundle. Make sure you have trunk installed with `cargo install trunk`.
+
+## Server Side Rendering with cargo-leptos
+cargo-leptos is now the easiest and most featureful way to build server side rendered apps with hydration. It provides automatic recompilation of client and server code, wasm optimisation, CSS minification, and more! Check out more about it [here](https://github.com/akesson/cargo-leptos)
+
+1. Install cargo-leptos
+```bash
+cargo install --locked cargo-leptos
+``` 
+2. Build the site in watch mode, recompiling on file changes
+```bash
+cargo leptos watch
+```
+3. When ready to deploy, run
+```bash
+cargo leptos build --release
+```
+
+## Server Side Rendering without cargo-leptos
+To run it as a server side app with hydration, you'll need to have wasm-pack installed.
+
+0. Edit the `[package.metadata.leptos]` section and set `site-root` to `"pkg"`. You'll also want to change the path of the `<StyleSheet / >` component in the root component to point towards the CSS file in the root. This tells leptos that the WASM/JS files generated by wasm-pack are available at `./pkg` and that the CSS files are no longer processed by cargo-leptos. Building to alternative folders is not supported at this time.
+1. Install wasm-pack
+```bash
+cargo install wasm-pack
+```
+2. Build the Webassembly used to hydrate the HTML from the server
+```bash
+wasm-pack build --target=web --debug --no-default-features --features=hydrate
+```
+3. Run the server to serve the Webassembly, JS, and HTML 
+```bash
+cargo run --no-default-features --features=ssr
+```

examples/hackernews_axum/src/api.rs

@@ -1,4 +1,4 @@
-use leptos::Serializable;
+use leptos::{on_cleanup, Scope, Serializable};
 use serde::{Deserialize, Serialize};
 
 pub fn story(path: &str) -> String {
@@ -10,11 +10,15 @@ pub fn user(path: &str) -> String {
 }
 
 #[cfg(not(feature = "ssr"))]
-pub async fn fetch_api<T>(path: &str) -> Option<T>
+pub async fn fetch_api<T>(cx: Scope, path: &str) -> Option<T>
 where
     T: Serializable,
 {
+    let abort_controller = web_sys::AbortController::new().ok();
+    let abort_signal = abort_controller.as_ref().map(|a| a.signal());
+
     let json = gloo_net::http::Request::get(path)
+        .abort_signal(abort_signal.as_ref())
         .send()
         .await
         .map_err(|e| log::error!("{e}"))
@@ -22,11 +26,19 @@ where
         .text()
         .await
         .ok()?;
+
+    // abort in-flight requests if the Scope is disposed
+    // i.e., if we've navigated away from this page
+    on_cleanup(cx, move || {
+        if let Some(abort_controller) = abort_controller {
+            abort_controller.abort()
+        }
+    });
     T::from_json(&json).ok()
 }
 
 #[cfg(feature = "ssr")]
-pub async fn fetch_api<T>(path: &str) -> Option<T>
+pub async fn fetch_api<T>(cx: Scope, path: &str) -> Option<T>
 where
     T: Serializable,
 {

examples/hackernews_axum/src/file.rs

@@ -0,0 +1,41 @@
+use cfg_if::cfg_if;
+
+cfg_if! {
+if #[cfg(feature = "ssr")] {
+    use axum::{
+        body::{boxed, Body, BoxBody},
+        extract::Extension,
+        http::{Request, Response, StatusCode, Uri},
+    };
+    use tower::ServiceExt;
+    use tower_http::services::ServeDir;
+    use std::sync::Arc;
+    use leptos::LeptosOptions;
+
+    pub async fn file_handler(uri: Uri, Extension(options): Extension<Arc<LeptosOptions>>) -> Result<Response<BoxBody>, (StatusCode, String)> {
+
+        let options = &*options;
+        let root = options.site_root.clone();
+        let res = get_static_file(uri.clone(), &root).await?;
+
+        match res.status() {
+            StatusCode::OK => Ok(res),
+            _ => Err((res.status(), "File Not Found".to_string()))
+        }
+    }
+
+    async fn get_static_file(uri: Uri, root: &str) -> Result<Response<BoxBody>, (StatusCode, String)> {
+        let req = Request::builder().uri(uri.clone()).body(Body::empty()).unwrap();
+        let root_path = format!("{root}");
+        // `ServeDir` implements `tower::Service` so we can call it with `tower::ServiceExt::oneshot`
+        // This path is relative to the cargo root
+        match ServeDir::new(&root_path).oneshot(req).await {
+            Ok(res) => Ok(res.map(boxed)),
+            Err(err) => Err((
+                StatusCode::INTERNAL_SERVER_ERROR,
+                format!("Something went wrong: {}", err),
+            )),
+        }
+    }
+}
+}

examples/hackernews_axum/src/handlers.rs

@@ -0,0 +1,66 @@
+use cfg_if::cfg_if;
+
+cfg_if! {
+if #[cfg(feature = "ssr")] {
+    use axum::{
+        body::{boxed, Body, BoxBody},
+        http::{Request, Response, StatusCode, Uri},
+    };
+    use tower::ServiceExt;
+    use tower_http::services::ServeDir;
+
+    pub async fn file_handler(uri: Uri) -> Result<Response<BoxBody>, (StatusCode, String)> {
+        let res = get_static_file(uri.clone(), "/pkg").await?;
+        println!("FIRST URI{:?}", uri);
+
+        if res.status() == StatusCode::NOT_FOUND {
+            // try with `.html`
+            // TODO: handle if the Uri has query parameters
+            match format!("{}.html", uri).parse() {
+                Ok(uri_html) => get_static_file(uri_html, "/pkg").await,
+                Err(_) => Err((StatusCode::INTERNAL_SERVER_ERROR, "Invalid URI".to_string())),
+            }
+        } else {
+            Ok(res)
+        }
+    }
+
+    pub async fn get_static_file_handler(uri: Uri) -> Result<Response<BoxBody>, (StatusCode, String)> {
+        let res = get_static_file(uri.clone(), "/static").await?;
+        println!("FIRST URI{:?}", uri);
+
+        if res.status() == StatusCode::NOT_FOUND {
+          Err((StatusCode::INTERNAL_SERVER_ERROR, "Invalid URI".to_string()))
+        } else {
+            Ok(res)
+        }
+    }
+
+    async fn get_static_file(uri: Uri, base: &str) -> Result<Response<BoxBody>, (StatusCode, String)> {
+        let req = Request::builder().uri(&uri).body(Body::empty()).unwrap();
+
+        // `ServeDir` implements `tower::Service` so we can call it with `tower::ServiceExt::oneshot`
+        // When run normally, the root should be the crate root
+      println!("Base: {:#?}", base);
+        if base == "/static" {
+            match ServeDir::new("./static").oneshot(req).await {
+                Ok(res) => Ok(res.map(boxed)),
+                Err(err) => Err((
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    format!("Something went wrong: {}", err),
+                ))
+        }
+        } else if base == "/pkg" {
+            match ServeDir::new("./pkg").oneshot(req).await {
+                Ok(res) => Ok(res.map(boxed)),
+                Err(err) => Err((
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    format!("Something went wrong: {}", err),
+                )),
+        }
+    } else{
+           Err((StatusCode::NOT_FOUND, "Not Found".to_string()))
+        }
+    }
+    }
+}

examples/hackernews_axum/src/lib.rs

@@ -1,8 +1,10 @@
 use cfg_if::cfg_if;
-use leptos::*;
+use leptos::{component, view, IntoView, Scope};
 use leptos_meta::*;
 use leptos_router::*;
 mod api;
+pub mod file;
+pub mod handlers;
 mod routes;
 use routes::nav::*;
 use routes::stories::*;
@@ -10,24 +12,25 @@ use routes::story::*;
 use routes::users::*;
 
 #[component]
-pub fn App(cx: Scope) -> Element {
-    provide_context(cx, MetaContext::default());
-
+pub fn App(cx: Scope) -> impl IntoView {
+    provide_meta_context(cx);
     view! {
         cx,
-        <div>
-            <Stylesheet href="/static/style.css"/>
+        <>
+            <Link rel="shortcut icon" type_="image/ico" href="/favicon.ico"/>
+            <Stylesheet id="leptos" href="/pkg/hackernews_axum.css"/>
+            <Meta name="description" content="Leptos implementation of a HackerNews demo."/>
             <Router>
                 <Nav />
                 <main>
                     <Routes>
-                        <Route path="users/:id" element=|cx| view! { cx,  <User/> }/>
-                        <Route path="stories/:id" element=|cx| view! { cx,  <Story/> }/>
-                        <Route path="*stories" element=|cx| view! { cx,  <Stories/> }/>
+                        <Route path="users/:id" view=|cx| view! { cx,  <User/> }/>
+                        <Route path="stories/:id" view=|cx| view! { cx,  <Story/> }/>
+                        <Route path=":stories?" view=|cx| view! { cx,  <Stories/> }/>
                     </Routes>
                 </main>
             </Router>
-        </div>
+        </>
     }
 }
 
@@ -40,7 +43,7 @@ cfg_if! {
         pub fn hydrate() {
             _ = console_log::init_with_level(log::Level::Debug);
             console_error_panic_hook::set_once();
-            leptos::hydrate(body().unwrap(), move |cx| {
+            leptos::mount_to_body(move |cx| {
                 view! { cx, <App/> }
             });
         }

examples/hackernews_axum/src/main.rs

@@ -0,0 +1,57 @@
+use cfg_if::cfg_if;
+use leptos::*;
+
+// boilerplate to run in different modes
+cfg_if! {
+if #[cfg(feature = "ssr")] {
+    use axum::{
+        Router,
+        routing::get,
+        extract::Extension,
+    };
+    use leptos_axum::{generate_route_list, LeptosRoutes};
+    use std::sync::Arc;
+    use hackernews_axum::file::file_handler;
+
+    #[tokio::main]
+    async fn main() {
+        use hackernews_axum::*;
+
+        let conf = get_configuration(Some("Cargo.toml")).await.unwrap();
+        let leptos_options = conf.leptos_options;
+        let addr = leptos_options.site_address.clone();
+        let routes = generate_route_list(|cx| view! { cx, <App/> }).await;
+
+        simple_logger::init_with_level(log::Level::Debug).expect("couldn't initialize logging");
+
+        // build our application with a route
+        let app = Router::new()
+        .route("/favicon.ico", get(file_handler))
+        .leptos_routes(leptos_options.clone(), routes, |cx| view! { cx, <App/> } )
+        .fallback(file_handler)
+        .layer(Extension(Arc::new(leptos_options)));
+
+        // run our app with hyper
+        // `axum::Server` is a re-export of `hyper::Server`
+        log!("listening on {}", addr);
+        axum::Server::bind(&addr)
+            .serve(app.into_make_service())
+            .await
+            .unwrap();
+    }
+}
+
+    // client-only stuff for Trunk
+    else {
+        use hackernews_axum::*;
+
+        pub fn main() {
+            console_error_panic_hook::set_once();
+            _ = console_log::init_with_level(log::Level::Debug);
+            console_error_panic_hook::set_once();
+            mount_to_body(|cx| {
+                view! { cx, <App/> }
+            });
+        }
+    }
+}

examples/hackernews_axum/src/routes/nav.rs

@@ -1,8 +1,8 @@
-use leptos::*;
+use leptos::{component, Scope, IntoView, view};
 use leptos_router::*;
 
 #[component]
-pub fn Nav(cx: Scope) -> Element {
+pub fn Nav(cx: Scope) -> impl IntoView {
     view! { cx,
         <header class="header">
             <nav class="inner">

examples/hackernews_axum/src/routes/stories.rs

@@ -14,7 +14,7 @@ fn category(from: &str) -> &'static str {
 }
 
 #[component]
-pub fn Stories(cx: Scope) -> Element {
+pub fn Stories(cx: Scope) -> impl IntoView {
     let query = use_query_map(cx);
     let params = use_params_map(cx);
     let page = move || {
@@ -32,11 +32,13 @@ pub fn Stories(cx: Scope) -> Element {
         move || (page(), story_type()),
         move |(page, story_type)| async move {
             let path = format!("{}?page={}", category(&story_type), page);
-            api::fetch_api::<Vec<api::Story>>(&api::story(&path)).await
+            api::fetch_api::<Vec<api::Story>>(cx, &api::story(&path)).await
         },
     );
+    let (pending, set_pending) = create_signal(cx, false);
 
-    let hide_more_link = move || stories.read().unwrap_or(None).unwrap_or_default().len() < 28;
+    let hide_more_link =
+        move || pending() || stories.read().unwrap_or(None).unwrap_or_default().len() < 28;
 
     view! {
         cx,
@@ -52,14 +54,14 @@ pub fn Stories(cx: Scope) -> Element {
                             >
                                 "< prev"
                             </a>
-                        }
+                        }.into_any()
                     } else {
                         view! {
                             cx,
                             <span class="page-link disabled" aria-hidden="true">
                                 "< prev"
                             </span>
-                        }
+                        }.into_any()
                     }}
                 </span>
                 <span>"page " {page}</span>
@@ -76,25 +78,30 @@ pub fn Stories(cx: Scope) -> Element {
             </div>
             <main class="news-list">
                 <div>
-                    <Suspense fallback=view! { cx,  <p>"Loading..."</p> }>
+                    <Transition
+                        fallback=move || view! { cx,  <p>"Loading..."</p> }
+                        set_pending=set_pending.into()
+                    >
                         {move || match stories.read() {
                             None => None,
-                            Some(None) => Some(view! { cx,  <p>"Error loading stories."</p> }),
+                            Some(None) => Some(view! { cx,  <p>"Error loading stories."</p> }.into_any()),
                             Some(Some(stories)) => {
                                 Some(view! { cx,
                                     <ul>
-                                        <For each=move || stories.clone() key=|story| story.id>{
-                                            move |cx: Scope, story: &api::Story| {
+                                        <For
+                                            each=move || stories.clone()
+                                            key=|story| story.id
+                                            view=move |story: api::Story| {
                                                 view! { cx,
-                                                    <Story story=story.clone() />
+                                                    <Story story/>
                                                 }
                                             }
-                                        }</For>
+                                        />
                                     </ul>
-                                })
+                                }.into_any())
                             }
                         }}
-                    </Suspense>
+                    </Transition>
                 </div>
             </main>
         </div>
@@ -102,7 +109,7 @@ pub fn Stories(cx: Scope) -> Element {
 }
 
 #[component]
-fn Story(cx: Scope, story: api::Story) -> Element {
+fn Story(cx: Scope, story: api::Story) -> impl IntoView {
     view! { cx,
          <li class="news-item">
             <span class="score">{story.points}</span>
@@ -115,10 +122,10 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                             </a>
                             <span class="host">"("{story.domain}")"</span>
                         </span>
-                    }
+                    }.into_view(cx)
                 } else {
                     let title = story.title.clone();
-                    view! { cx,  <A href=format!("/stories/{}", story.id)>{title.clone()}</A> }
+                    view! { cx,  <A href=format!("/stories/{}", story.id)>{title.clone()}</A> }.into_view(cx)
                 }}
             </span>
             <br />
@@ -127,7 +134,7 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                     view! { cx,
                         <span>
                             {"by "}
-                            {story.user.map(|user| view ! { cx, <A href=format!("/users/{}", user)>{user.clone()}</A>})}
+                            {story.user.map(|user| view ! { cx, <A href=format!("/users/{user}")>{user.clone()}</A>})}
                             {format!(" {} | ", story.time_ago)}
                             <A href=format!("/stories/{}", story.id)>
                                 {if story.comments_count.unwrap_or_default() > 0 {
@@ -137,17 +144,15 @@ fn Story(cx: Scope, story: api::Story) -> Element {
                                 }}
                             </A>
                         </span>
-                    }
+                    }.into_view(cx)
                 } else {
                     let title = story.title.clone();
-                    view! { cx,  <A href=format!("/item/{}", story.id)>{title.clone()}</A> }
+                    view! { cx,  <A href=format!("/item/{}", story.id)>{title.clone()}</A> }.into_view(cx)
                 }}
             </span>
             {(story.story_type != "link").then(|| view! { cx,
-                <span>
-                    //{" "}
-                    <span class="label">{story.story_type}</span>
-                </span>
+                " "
+                <span class="label">{story.story_type}</span>
             })}
         </li>
     }

examples/hackernews_axum/src/routes/story.rs

@@ -0,0 +1,119 @@
+use crate::api;
+use leptos::*;
+use leptos_meta::*;
+use leptos_router::*;
+
+#[component]
+pub fn Story(cx: Scope) -> impl IntoView {
+    let params = use_params_map(cx);
+    let story = create_resource(
+        cx,
+        move || params().get("id").cloned().unwrap_or_default(),
+        move |id| async move {
+            if id.is_empty() {
+                None
+            } else {
+                api::fetch_api::<api::Story>(cx, &api::story(&format!("item/{id}"))).await
+            }
+        },
+    );
+    let meta_description = move || story.read().and_then(|story| story.map(|story| story.title)).unwrap_or_else(|| "Loading story...".to_string());
+
+    view! { cx,
+        <>
+            <Meta name="description" content=meta_description/>
+                <Suspense fallback=|| view! { cx, "Loading..." }>
+                    {move || story.read().map(|story| match story {
+                        None => view! { cx,  <div class="item-view">"Error loading this story."</div> },
+                        Some(story) => view! { cx,
+                            <div class="item-view">
+                                <div class="item-view-header">
+                                <a href=story.url target="_blank">
+                                    <h1>{story.title}</h1>
+                                </a>
+                                <span class="host">
+                                    "("{story.domain}")"
+                                </span>
+                                {story.user.map(|user| view! { cx,  <p class="meta">
+                                    {story.points}
+                                    " points | by "
+                                    <A href=format!("/users/{user}")>{user.clone()}</A>
+                                    {format!(" {}", story.time_ago)}
+                                </p>})}
+                                </div>
+                                <div class="item-view-comments">
+                                <p class="item-view-comments-header">
+                                    {if story.comments_count.unwrap_or_default() > 0 {
+                                        format!("{} comments", story.comments_count.unwrap_or_default())
+                                    } else {
+                                        "No comments yet.".into()
+                                    }}
+                                </p>
+                                <ul class="comment-children">
+                                    <For
+                                        each=move || story.comments.clone().unwrap_or_default()
+                                        key=|comment| comment.id
+                                        view=move |comment| view! { cx,  <Comment comment /> }
+                                    />
+                                </ul>
+                            </div>
+                        </div>
+                    }})
+                }
+            </Suspense>
+        </>
+    }
+}
+
+#[component]
+pub fn Comment(cx: Scope, comment: api::Comment) -> impl IntoView {
+    let (open, set_open) = create_signal(cx, true);
+
+    view! { cx,
+        <li class="comment">
+        <div class="by">
+            <A href=format!("/users/{}", comment.user.clone().unwrap_or_default())>{comment.user.clone()}</A>
+            {format!(" {}", comment.time_ago)}
+        </div>
+        <div class="text" inner_html=comment.content></div>
+        {(!comment.comments.is_empty()).then(|| {
+            view! { cx,
+                <div>
+                    <div class="toggle" class:open=open>
+                        <a on:click=move |_| set_open.update(|n| *n = !*n)>
+                            {
+                                let comments_len = comment.comments.len();
+                                move || if open() {
+                                    "[-]".into()
+                                } else {
+                                    format!("[+] {}{} collapsed", comments_len, pluralize(comments_len))
+                                }
+                            }
+                        </a>
+                    </div>
+                    {move || open().then({
+                        let comments = comment.comments.clone();
+                        move || view! { cx,
+                            <ul class="comment-children">
+                                <For
+                                    each=move || comments.clone()
+                                    key=|comment| comment.id
+                                    view=move |comment: api::Comment| view! { cx, <Comment comment /> }
+                                />
+                            </ul>
+                        }
+                    })}
+                </div>
+            }
+        })}
+        </li>
+    }
+}
+
+fn pluralize(n: usize) -> &'static str {
+    if n == 1 {
+        " reply"
+    } else {
+        " replies"
+    }
+}

examples/hackernews_axum/src/routes/users.rs

@@ -0,0 +1,47 @@
+use crate::api::{self, User};
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+pub fn User(cx: Scope) -> impl IntoView {
+    let params = use_params_map(cx);
+    let user = create_resource(
+        cx,
+        move || params().get("id").cloned().unwrap_or_default(),
+        move |id| async move {
+            if id.is_empty() {
+                None
+            } else {
+                api::fetch_api::<User>(cx, &api::user(&id)).await
+            }
+        },
+    );
+    view! { cx,
+        <div class="user-view">
+            <Suspense fallback=|| view! { cx, "Loading..." }>
+                {move || user.read().map(|user| match user {
+                    None => view! { cx,  <h1>"User not found."</h1> }.into_any(),
+                    Some(user) => view! { cx,
+                        <div>
+                            <h1>"User: " {&user.id}</h1>
+                            <ul class="meta">
+                                <li>
+                                    <span class="label">"Created: "</span> {user.created}
+                                </li>
+                                <li>
+                                <span class="label">"Karma: "</span> {user.karma}
+                                </li>
+                                {user.about.as_ref().map(|about| view! { cx,  <li inner_html=about class="about"></li> })}
+                            </ul>
+                            <p class="links">
+                                <a href=format!("https://news.ycombinator.com/submitted?id={}", user.id)>"submissions"</a>
+                                " | "
+                                <a href=format!("https://news.ycombinator.com/threads?id={}", user.id)>"comments"</a>
+                            </p>
+                        </div>
+                    }.into_any()
+                })}
+            </Suspense>
+        </div>
+    }
+}

examples/parent-child/README.md

@@ -1,17 +0,0 @@
-# Parent Child Example
-
-This example highlights four different ways that child components can communicate with their parent:
-
-1. <ButtonA/>: passing a WriteSignal as one of the child component props,
-   for the child component to write into and the parent to read
-2. <ButtonB/>: passing a closure as one of the child component props, for
-   the child component to call
-3. <ButtonC/>: adding a simple event listener on the child component itself
-4. <ButtonD/>: providing a context that is used in the component (rather than prop drilling)
-
-## Client Side Rendering
-
-To run it as a Client Side App, you can issue `trunk serve --open` in the root. This will build the entire
-app into one CSR bundle
-
-> If you don't have `trunk` installed, [click here for install instructions.](https://trunkrs.dev/)

examples/parent_child/Makefile.toml

@@ -0,0 +1,4 @@
+[tasks.build]
+command = "cargo"
+args = ["+nightly", "build-all-features"]
+install_crate = "cargo-all-features"

examples/parent_child/index.html

@@ -2,6 +2,7 @@
 <html>
 	<head>
 		<link data-trunk rel="rust" data-wasm-opt="z"/>
+		<link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico"/>
 		<style>
 			.red {
 				color: red;

examples/parent_child/src/lib.rs

@@ -7,23 +7,21 @@ use web_sys::MouseEvent;
 //    for the child component to write into and the parent to read
 // 2) <ButtonB/>: passing a closure as one of the child component props, for
 //    the child component to call
-// 3) <ButtonC/>: adding a simple event listener on the child component itself
-// 4) <ButtonD/>: providing a context that is used in the component (rather than prop drilling)
+// 4) <ButtonC/>: providing a context that is used in the component (rather than prop drilling)
 
 #[derive(Copy, Clone)]
 struct SmallcapsContext(WriteSignal<bool>);
 
 #[component]
-pub fn App(cx: Scope) -> Element {
+pub fn App(cx: Scope) -> impl IntoView {
     // just some signals to toggle three classes on our <p>
     let (red, set_red) = create_signal(cx, false);
     let (right, set_right) = create_signal(cx, false);
-    let (italics, set_italics) = create_signal(cx, false);
     let (smallcaps, set_smallcaps) = create_signal(cx, false);
 
     // the newtype pattern isn't *necessary* here but is a good practice
     // it avoids confusion with other possible future `WriteSignal<bool>` contexts
-    // and makes it easier to refer to it in ButtonD
+    // and makes it easier to refer to it in ButtonC
     provide_context(cx, SmallcapsContext(set_smallcaps));
 
     view! {
@@ -33,7 +31,6 @@ pub fn App(cx: Scope) -> Element {
                 // class: attributes take F: Fn() => bool, and these signals all implement Fn()
                 class:red=red
                 class:right=right
-                class:italics=italics
                 class:smallcaps=smallcaps
             >
                 "Lorem ipsum sit dolor amet."
@@ -45,18 +42,19 @@ pub fn App(cx: Scope) -> Element {
             // Button B: pass a closure
             <ButtonB on_click=move |_| set_right.update(|value| *value = !*value)/>
 
-            // Button C: components that return an Element, like elements, can take on: event handler attributes
-            <ButtonC on:click=move |_| set_italics.update(|value| *value = !*value)/>
-
             // Button D gets its setter from context rather than props
-            <ButtonD/>
+            <ButtonC/>
         </main>
     }
 }
 
-// Button A receives a signal setter and updates the signal itself
+/// Button A receives a signal setter and updates the signal itself
 #[component]
-pub fn ButtonA(cx: Scope, setter: WriteSignal<bool>) -> Element {
+pub fn ButtonA(
+    cx: Scope,
+    /// Signal that will be toggled when the button is clicked.
+    setter: WriteSignal<bool>
+) -> impl IntoView {
     view! {
         cx,
         <button
@@ -67,9 +65,13 @@ pub fn ButtonA(cx: Scope, setter: WriteSignal<bool>) -> Element {
     }
 }
 
-// Button B receives a closure
+/// Button B receives a closure
 #[component]
-pub fn ButtonB<F>(cx: Scope, on_click: F) -> Element
+pub fn ButtonB<F>(
+    cx: Scope,
+    /// Callback that will be invoked when the button is clicked.
+    on_click: F
+) -> impl IntoView
 where
     F: Fn(MouseEvent) + 'static,
 {
@@ -95,22 +97,10 @@ where
     // if Rust ever had named function arguments we could drop this requirement
 }
 
-// Button C will have its event listener added by the parent
-// This is just a way of encapsulating whatever markup you need for the button
+/// Button D is very similar to Button A, but instead of passing the setter as a prop
+/// we get it from the context
 #[component]
-pub fn ButtonC(cx: Scope) -> Element {
-    view! {
-        cx,
-        <button>
-            "Toggle Italics"
-        </button>
-    }
-}
-
-// Button D is very similar to Button A, but instead of passing the setter as a prop
-// we get it from the context
-#[component]
-pub fn ButtonD(cx: Scope) -> Element {
+pub fn ButtonC(cx: Scope) -> impl IntoView {
     let setter = use_context::<SmallcapsContext>(cx).unwrap().0;
 
     view! {