Revert "fix: snip infinite type recursion"

This reverts commit 38d4f26d03.

.github/workflows/ci-changed-examples.yml

@@ -1,23 +1,21 @@
 name: CI Changed Examples
-
 on:
   push:
     branches:
       - main
+      - leptos_0.6
   pull_request:
     branches:
       - main
-
+      - leptos_0.6
 jobs:
   get-example-changed:
     uses: ./.github/workflows/get-example-changed.yml
-
   get-matrix:
     needs: [get-example-changed]
     uses: ./.github/workflows/get-changed-examples-matrix.yml
     with:
       example_changed: ${{ fromJSON(needs.get-example-changed.outputs.example_changed) }}
-
   test:
     name: CI
     needs: [get-example-changed, get-matrix]

.github/workflows/ci-examples.yml

@@ -1,13 +1,13 @@
 name: CI Examples
-
 on:
   push:
     branches:
       - main
+      - leptos_0.6
   pull_request:
     branches:
       - main
-
+      - leptos_0.6
 jobs:
   get-leptos-changed:
     uses: ./.github/workflows/get-leptos-changed.yml

.github/workflows/ci-semver.yml

@@ -1,27 +1,24 @@
 name: CI semver
-
 on:
   push:
     branches:
       - main
+      - leptos_0.6
   pull_request:
     branches:
       - main
-
+      - leptos_0.6
 jobs:
   get-leptos-changed:
     uses: ./.github/workflows/get-leptos-changed.yml
-
   test:
     needs: [get-leptos-changed]
     if: github.event.pull_request.labels[0].name == 'semver' # needs.get-leptos-changed.outputs.leptos_changed == 'true' && github.event.pull_request.labels[0].name != 'breaking'
     name: Run semver check (nightly-2024-08-01)
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-
       - name: Semver Checks
         uses: obi1kenobi/cargo-semver-checks-action@v2
         with:

.github/workflows/ci.yml

@@ -1,50 +1,25 @@
 name: CI
-
 on:
   push:
     branches:
       - main
+      - leptos_0.6
   pull_request:
     branches:
       - main
-
+      - leptos_0.6
 jobs:
   get-leptos-changed:
     uses: ./.github/workflows/get-leptos-changed.yml
-
+  get-leptos-matrix:
+    uses: ./.github/workflows/get-leptos-matrix.yml
   test:
     name: CI
-    needs: [get-leptos-changed]
+    needs: [get-leptos-changed, get-leptos-matrix]
     if: needs.get-leptos-changed.outputs.leptos_changed == 'true'
     strategy:
-      matrix:
-        directory:
-          [
-            any_error,
-            any_spawner,
-            const_str_slice_concat,
-            either_of,
-            hydration_context,
-            integrations/actix,
-            integrations/axum,
-            integrations/utils,
-            leptos,
-            leptos_config,
-            leptos_dom,
-            leptos_hot_reload,
-            leptos_macro,
-            leptos_server,
-            meta,
-            next_tuple,
-            oco,
-            or_poisoned,
-            reactive_graph,
-            router,
-            router_macro,
-            server_fn,
-            server_fn/server_fn_macro_default,
-            server_fn_macro,
-          ]
+      matrix: ${{ fromJSON(needs.get-leptos-matrix.outputs.matrix) }}
+      fail-fast: false
     uses: ./.github/workflows/run-cargo-make-task.yml
     with:
       directory: ${{ matrix.directory }}

.github/workflows/get-changed-examples-matrix.yml

@@ -26,7 +26,7 @@ jobs:
 
       - name: Get example project directories that changed
         id: changed-dirs
-        uses: tj-actions/changed-files@v44
+        uses: tj-actions/changed-files@v45
         with:
           dir_names: true
           dir_names_max_depth: "2"

.github/workflows/get-example-changed.yml

@@ -1,12 +1,10 @@
 name: Examples Changed Call
-
 on:
   workflow_call:
     outputs:
       example_changed:
         description: "Example Changed"
         value: ${{ jobs.get-example-changed.outputs.example_changed }}
-
 jobs:
   get-example-changed:
     name: Get Example Changed
@@ -18,21 +16,17 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-
       - name: Get example files that changed
         id: changed-files
-        uses: tj-actions/changed-files@v44
+        uses: tj-actions/changed-files@v45
         with:
           files: |
             examples/**
             !examples/cargo-make/**
-            !examples/gtk/**
             !examples/Makefile.toml
             !examples/*.md
-
       - name: List example files that changed
         run: echo '${{ steps.changed-files.outputs.all_changed_files }}'
-
       - name: Set example_changed
         id: set-example-changed
         run: |

.github/workflows/get-examples-matrix.yml

@@ -1,38 +1,34 @@
 name: Get Examples Matrix Call
-
 on:
   workflow_call:
     outputs:
       matrix:
         description: "Matrix"
         value: ${{ jobs.create.outputs.matrix }}
-
 jobs:
   create:
     name: Create Examples Matrix
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
+    env:
+      # separate examples using "|" (vertical bar) char like "a|b|c".
+      # cargo-make should be excluded by default.
+      EXCLUDED_EXAMPLES: cargo-make
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-
       - name: Install jq
         run: sudo apt-get install jq
-
       - name: Set Matrix
         id: set-matrix
         run: |
-          examples=$(ls examples |
-          awk '{print "examples/" $0}' |
-          grep -v .md |
-          grep -v examples/Makefile.toml |
-          grep -v examples/cargo-make |
-          grep -v examples/gtk |
+          examples=$(ls -1d examples/*/ |
+          grep -vE "($EXCLUDED_EXAMPLES)" |
+          sed 's/\/$//' |
           jq -R -s -c 'split("\n")[:-1]')
           echo "Example Directories: $examples"
           echo "matrix={\"directory\":$examples}" >> "$GITHUB_OUTPUT"
-
       - name: Print Location Info
         run: |
           echo "Workspace: ${{ github.workspace }}"

.github/workflows/get-leptos-changed.yml

@@ -1,12 +1,10 @@
 name: Get Leptos Changed Call
-
 on:
   workflow_call:
     outputs:
       leptos_changed:
         description: "Leptos Changed"
         value: ${{ jobs.create.outputs.leptos_changed }}
-
 jobs:
   create:
     name: Detect Source Change
@@ -18,40 +16,19 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-
       - name: Get source files that changed
         id: changed-source
-        uses: tj-actions/changed-files@v44
+        uses: tj-actions/changed-files@v45
         with:
-          files: |
-            any_error/**
-            any_spawner/**
-            const_str_slice_concat/**
-            either_of/**
-            hydration_context/**
-            integrations/actix/**
-            integrations/axum/**
-            integrations/utils/**
-            leptos/**
-            leptos_config/**
-            leptos_dom/**
-            leptos_hot_reload/**
-            leptos_macro/**
-            leptos_server/**
-            meta/**
-            next_tuple/**
-            oco/**
-            or_poisoned/**
-            reactive_graph/**
-            router/**
-            router_macro/**
-            server_fn/**
-            server_fn/server_fn_macro_default/**
-            server_fn_macro/**
-
+          files_ignore: |
+            .*/**/*
+            cargo-make/**/*
+            examples/**/*
+            projects/**/*
+            benchmarks/**/*
+            docs/**/*
       - name: List source files that changed
         run: echo '${{ steps.changed-source.outputs.all_changed_files }}'
-
       - name: Set leptos_changed
         id: set-source-changed
         run: |

.github/workflows/get-leptos-matrix.yml

@@ -0,0 +1,32 @@
+name: Get Leptos Matrix Call
+on:
+  workflow_call:
+    outputs:
+      matrix:
+        description: "Matrix"
+        value: ${{ jobs.create.outputs.matrix }}
+jobs:
+  create:
+    name: Create Leptos Matrix
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install jq
+        run: sudo apt-get install jq
+      - name: Set Matrix
+        id: set-matrix
+        run: |
+          crates=$(cargo metadata --no-deps --quiet --format-version 1 |
+          jq -r '.packages[] | select(.name != "workspace") | .manifest_path| rtrimstr("/Cargo.toml")' |
+          sed "s|$(pwd)/||" |
+          jq -R -s -c 'split("\n")[:-1]')
+          echo "Leptos Directories: $crates"
+          echo "matrix={\"directory\":$crates}" >> "$GITHUB_OUTPUT"
+      - name: Print Location Info
+        run: |
+          echo "Workspace: ${{ github.workspace }}"
+          pwd
+          ls | sort -u

.github/workflows/run-cargo-make-task.yml

@@ -1,5 +1,4 @@
 name: Run Task
-
 on:
   workflow_call:
     inputs:
@@ -12,70 +11,53 @@ on:
       toolchain:
         required: true
         type: string
-
 env:
   CARGO_TERM_COLOR: always
   CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
-
 jobs:
   test:
     name: Run ${{ inputs.cargo_make_task }} (${{ inputs.toolchain }})
     runs-on: ubuntu-latest
-
     steps:
       # Setup environment
       - uses: actions/checkout@v4
-
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ inputs.toolchain }}
-
       - name: Add wasm32-unknown-unknown
         run: rustup target add wasm32-unknown-unknown
-
       - name: Setup cargo-make
         uses: davidB/rust-cargo-make@v1
-
       - name: Cargo generate-lockfile
         run: cargo generate-lockfile
-
       - uses: Swatinem/rust-cache@v2
-
       - name: Install binstall
         uses: cargo-bins/cargo-binstall@main
-
       - name: Install wasm-bindgen
         run: cargo binstall wasm-bindgen-cli --no-confirm
-
       - name: Install cargo-leptos
         run: cargo binstall cargo-leptos --no-confirm
-
       - name: Install Trunk
         uses: jetli/trunk-action@v0.5.0
         with:
           version: "latest"
-
       - name: Print Trunk Version
         run: trunk --version
-
       - name: Install Node.js
         uses: actions/setup-node@v4
         with:
           node-version: 20
-
       - uses: pnpm/action-setup@v4
         name: Install pnpm
         id: pnpm-install
         with:
           version: 8
           run_install: false
-
       - name: Get pnpm store directory
         id: pnpm-cache
         run: |
           echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
-
       - uses: actions/cache@v4
         name: Setup pnpm cache
         with:
@@ -83,7 +65,6 @@ jobs:
           key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
-
       - name: Maybe install chromedriver
         run: |
           project_makefile=${{inputs.directory}}/Makefile.toml
@@ -99,7 +80,6 @@ jobs:
           else
               echo chromedriver is not required
           fi
-
       - name: Maybe install playwright browser dependencies
         run: |
           for pw_path in $(find ${{inputs.directory}} -name playwright.config.ts)
@@ -113,12 +93,16 @@ jobs:
               echo Playwright is not required
             fi
           done
-
       - name: Install Deno
         uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-
+      - name: Maybe install gtk-rs dependencies
+        run: |
+          if [ ! -z $(echo ${{inputs.directory}} | grep gtk) ]; then
+            sudo apt-get update
+            sudo apt-get install -y libglib2.0-dev libgio2.0-cil-dev libgraphene-1.0-dev libcairo2-dev libpango1.0-dev libgtk-4-dev
+          fi
       # Run Cargo Make Task
       - name: ${{ inputs.cargo_make_task }}
         run: |

Cargo.toml

@@ -40,36 +40,36 @@ members = [
 exclude = ["benchmarks", "examples", "projects"]
 
 [workspace.package]
-version = "0.7.0-beta2"
+version = "0.7.0-beta6"
 edition = "2021"
 rust-version = "1.76"
 
 [workspace.dependencies]
-throw_error = { path = "./any_error/", version = "0.2.0-beta2" }
+throw_error = { path = "./any_error/", version = "0.2.0-beta6" }
 any_spawner = { path = "./any_spawner/", version = "0.1.0" }
 const_str_slice_concat = { path = "./const_str_slice_concat", version = "0.1.0" }
 either_of = { path = "./either_of/", version = "0.1.0" }
-hydration_context = { path = "./hydration_context", version = "0.2.0-beta2" }
-leptos = { path = "./leptos", version = "0.7.0-beta2" }
-leptos_config = { path = "./leptos_config", version = "0.7.0-beta2" }
-leptos_dom = { path = "./leptos_dom", version = "0.7.0-beta2" }
-leptos_hot_reload = { path = "./leptos_hot_reload", version = "0.7.0-beta2" }
-leptos_integration_utils = { path = "./integrations/utils", version = "0.7.0-beta2" }
-leptos_macro = { path = "./leptos_macro", version = "0.7.0-beta2" }
-leptos_router = { path = "./router", version = "0.7.0-beta2" }
-leptos_router_macro = { path = "./router_macro", version = "0.7.0-beta2" }
-leptos_server = { path = "./leptos_server", version = "0.7.0-beta2" }
-leptos_meta = { path = "./meta", version = "0.7.0-beta2" }
-next_tuple = { path = "./next_tuple", version = "0.1.0-beta2" }
+hydration_context = { path = "./hydration_context", version = "0.2.0-beta6" }
+leptos = { path = "./leptos", version = "0.7.0-beta6" }
+leptos_config = { path = "./leptos_config", version = "0.7.0-beta6" }
+leptos_dom = { path = "./leptos_dom", version = "0.7.0-beta6" }
+leptos_hot_reload = { path = "./leptos_hot_reload", version = "0.7.0-beta6" }
+leptos_integration_utils = { path = "./integrations/utils", version = "0.7.0-beta6" }
+leptos_macro = { path = "./leptos_macro", version = "0.7.0-beta6" }
+leptos_router = { path = "./router", version = "0.7.0-beta6" }
+leptos_router_macro = { path = "./router_macro", version = "0.7.0-beta6" }
+leptos_server = { path = "./leptos_server", version = "0.7.0-beta6" }
+leptos_meta = { path = "./meta", version = "0.7.0-beta6" }
+next_tuple = { path = "./next_tuple", version = "0.1.0-beta6" }
 oco_ref = { path = "./oco", version = "0.2.0" }
 or_poisoned = { path = "./or_poisoned", version = "0.1.0" }
-reactive_graph = { path = "./reactive_graph", version = "0.1.0-beta2" }
-reactive_stores = { path = "./reactive_stores", version = "0.1.0-beta2" }
-reactive_stores_macro = { path = "./reactive_stores_macro", version = "0.1.0-beta2" }
-server_fn = { path = "./server_fn", version = "0.7.0-beta2" }
-server_fn_macro = { path = "./server_fn_macro", version = "0.7.0-beta2" }
-server_fn_macro_default = { path = "./server_fn/server_fn_macro_default", version = "0.7.0-beta2" }
-tachys = { path = "./tachys", version = "0.1.0-beta2" }
+reactive_graph = { path = "./reactive_graph", version = "0.1.0-beta6" }
+reactive_stores = { path = "./reactive_stores", version = "0.1.0-beta6" }
+reactive_stores_macro = { path = "./reactive_stores_macro", version = "0.1.0-beta6" }
+server_fn = { path = "./server_fn", version = "0.7.0-beta6" }
+server_fn_macro = { path = "./server_fn_macro", version = "0.7.0-beta6" }
+server_fn_macro_default = { path = "./server_fn/server_fn_macro_default", version = "0.7.0-beta6" }
+tachys = { path = "./tachys", version = "0.1.0-beta6" }
 
 [profile.release]
 codegen-units = 1

any_error/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "throw_error"
-version = "0.2.0-beta2"
+version = "0.2.0-beta6"
 authors = ["Greg Johnston"]
 license = "MIT"
 readme = "../README.md"

any_spawner/Cargo.toml

@@ -28,3 +28,6 @@ futures-executor = ["futures/thread-pool", "futures/executor"]
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
+
+[package.metadata.cargo-all-features]
+denylist = ["tracing"]

benchmarks/Cargo.toml

@@ -2,7 +2,8 @@
 name = "benchmarks"
 version = "0.1.0"
 edition = "2021"
-rust-version.workspace = true
+# std::sync::LazyLock is stabilized in Rust version 1.80.0
+rust-version = "1.80.0"
 
 [dependencies]
 l0410 = { package = "leptos", version = "0.4.10", features = [

benchmarks/src/ssr.rs

@@ -18,7 +18,7 @@ fn leptos_ssr_bench(b: &mut Bencher) {
 				}
 			}
 
-			let rendered = view! { 
+			let rendered = view! {
 				<main>
 					<h1>"Welcome to our benchmark page."</h1>
 					<p>"Here's some introductory text."</p>
@@ -58,7 +58,7 @@ fn tachys_ssr_bench(b: &mut Bencher) {
 			}
 		}
 
-		let rendered = view! { 
+		let rendered = view! {
 			<main>
 				<h1>"Welcome to our benchmark page."</h1>
 				<p>"Here's some introductory text."</p>
@@ -92,13 +92,13 @@ fn tera_ssr_bench(b: &mut Bencher) {
 	{% endfor %}
 	</main>"#;
 
-    lazy_static::lazy_static! {
-        static ref TERA: Tera = {
-            let mut tera = Tera::default();
-            tera.add_raw_templates(vec![("template.html", TEMPLATE)]).unwrap();
-            tera
-        };
-    }
+
+    static  LazyCell<TERA>: Tera = LazyLock::new(|| {
+        let mut tera = Tera::default();
+        tera.add_raw_templates(vec![("template.html", TEMPLATE)]).unwrap();
+        tera
+    });
+
 
     #[derive(Serialize, Deserialize)]
     struct Counter {

benchmarks/src/todomvc/tera.rs

@@ -55,7 +55,7 @@ static TEMPLATE: &str = r#"<main>
 						{% else %}
 						 <li><a href="/">All</a></li>
 						{% endif %}
-				
+
 						{% if mode_active %}
                         <li><a href="/active" class="selected">Active</a></li>
 						{% else %}
@@ -91,13 +91,13 @@ fn tera_todomvc_ssr(b: &mut Bencher) {
     use serde::{Deserialize, Serialize};
     use tera::*;
 
-    lazy_static::lazy_static! {
-        static ref TERA: Tera = {
+
+        static LazyLock<TERA>: Tera = LazyLock( || {
             let mut tera = Tera::default();
             tera.add_raw_templates(vec![("template.html", TEMPLATE)]).unwrap();
             tera
-        };
-    }
+        });
+
 
     #[derive(Serialize, Deserialize)]
     struct Todo {
@@ -131,13 +131,13 @@ fn tera_todomvc_ssr_1000(b: &mut Bencher) {
     use serde::{Deserialize, Serialize};
     use tera::*;
 
-    lazy_static::lazy_static! {
-        static ref TERA: Tera = {
-            let mut tera = Tera::default();
-            tera.add_raw_templates(vec![("template.html", TEMPLATE)]).unwrap();
-            tera
-        };
-    }
+
+    static  TERA: LazyLock<Tera> = LazyLock::new(|| {
+        let mut tera = Tera::default();
+        tera.add_raw_templates(vec![("template.html", TEMPLATE)]).unwrap();
+        tera
+    });
+
 
     #[derive(Serialize, Deserialize)]
     struct Todo {

either_of/src/lib.rs

@@ -133,3 +133,104 @@ tuples!(EitherOf13 + EitherOf13Future + EitherOf13FutureProj => A, B, C, D, E, F
 tuples!(EitherOf14 + EitherOf14Future + EitherOf14FutureProj => A, B, C, D, E, F, G, H, I, J, K, L, M, N);
 tuples!(EitherOf15 + EitherOf15Future + EitherOf15FutureProj => A, B, C, D, E, F, G, H, I, J, K, L, M, N, O);
 tuples!(EitherOf16 + EitherOf16Future + EitherOf16FutureProj => A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P);
+
+/// Matches over the first expression and returns an either ([`Either`], [`EitherOf3`], ... [`EitherOf6`])
+/// composed of the values returned by the match arms.
+///
+/// The pattern syntax is exactly the same as found in a match arm.
+///
+/// # Examples
+///
+/// ```
+/// # use either_of::*;
+/// let either2 = either!(Some("hello"),
+///     Some(s) => s.len(),
+///     None => 0.0,
+/// );
+/// assert!(matches!(either2, Either::<usize, f64>::Left(5)));
+///
+/// let either3 = either!(Some("admin"),
+///     Some("admin") => "hello admin",
+///     Some(_) => 'x',
+///     _ => 0,
+/// );
+/// assert!(matches!(either3, EitherOf3::<&str, char, i32>::A("hello admin")));
+/// ```
+#[macro_export]
+macro_rules! either {
+    ($match:expr, $left_pattern:pat => $left_expression:expr, $right_pattern:pat => $right_expression:expr,) => {
+        match $match {
+            $left_pattern => $crate::Either::Left($left_expression),
+            $right_pattern => $crate::Either::Right($right_expression),
+        }
+    };
+    ($match:expr, $a_pattern:pat => $a_expression:expr, $b_pattern:pat => $b_expression:expr, $c_pattern:pat => $c_expression:expr,) => {
+        match $match {
+            $a_pattern => $crate::EitherOf3::A($a_expression),
+            $b_pattern => $crate::EitherOf3::B($b_expression),
+            $c_pattern => $crate::EitherOf3::C($c_expression),
+        }
+    };
+    ($match:expr, $a_pattern:pat => $a_expression:expr, $b_pattern:pat => $b_expression:expr, $c_pattern:pat => $c_expression:expr, $d_pattern:pat => $d_expression:expr,) => {
+        match $match {
+            $a_pattern => $crate::EitherOf4::A($a_expression),
+            $b_pattern => $crate::EitherOf4::B($b_expression),
+            $c_pattern => $crate::EitherOf4::C($c_expression),
+            $d_pattern => $crate::EitherOf4::D($d_expression),
+        }
+    };
+    ($match:expr, $a_pattern:pat => $a_expression:expr, $b_pattern:pat => $b_expression:expr, $c_pattern:pat => $c_expression:expr, $d_pattern:pat => $d_expression:expr, $e_pattern:pat => $e_expression:expr,) => {
+        match $match {
+            $a_pattern => $crate::EitherOf5::A($a_expression),
+            $b_pattern => $crate::EitherOf5::B($b_expression),
+            $c_pattern => $crate::EitherOf5::C($c_expression),
+            $d_pattern => $crate::EitherOf5::D($d_expression),
+            $e_pattern => $crate::EitherOf5::E($e_expression),
+        }
+    };
+    ($match:expr, $a_pattern:pat => $a_expression:expr, $b_pattern:pat => $b_expression:expr, $c_pattern:pat => $c_expression:expr, $d_pattern:pat => $d_expression:expr, $e_pattern:pat => $e_expression:expr, $f_pattern:pat => $f_expression:expr,) => {
+        match $match {
+            $a_pattern => $crate::EitherOf6::A($a_expression),
+            $b_pattern => $crate::EitherOf6::B($b_expression),
+            $c_pattern => $crate::EitherOf6::C($c_expression),
+            $d_pattern => $crate::EitherOf6::D($d_expression),
+            $e_pattern => $crate::EitherOf6::E($e_expression),
+            $f_pattern => $crate::EitherOf6::F($f_expression),
+        }
+    }; // if you need more eithers feel free to open a PR ;-)
+}
+
+// compile time test
+#[test]
+fn either_macro() {
+    let _: Either<&str, f64> = either!(12,
+        12 => "12",
+        _ => 0.0,
+    );
+    let _: EitherOf3<&str, f64, i32> = either!(12,
+        12 => "12",
+        13 => 0.0,
+        _ => 12,
+    );
+    let _: EitherOf4<&str, f64, char, i32> = either!(12,
+        12 => "12",
+        13 => 0.0,
+        14 => ' ',
+        _ => 12,
+    );
+    let _: EitherOf5<&str, f64, char, f32, i32> = either!(12,
+        12 => "12",
+        13 => 0.0,
+        14 => ' ',
+        15 => 0.0f32,
+        _ => 12,
+    );
+    let _: EitherOf6<&str, f64, char, f32, u8, i32> = either!(12,
+        12 => "12",
+        13 => 0.0,
+        14 => ' ',
+        15 => 0.0f32,
+        16 => 24u8,
+        _ => 12,
+    );
+}

examples/axum_js_ssr/Cargo.toml

@@ -0,0 +1,111 @@
+[package]
+name = "axum_js_ssr"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+axum = { version = "0.7.5", optional = true }
+console_error_panic_hook = "0.1.7"
+console_log = "1.0"
+gloo-utils = "0.2.0"
+html-escape = "0.2.13"
+http-body-util = { version = "0.1.0", optional = true }
+js-sys = { version = "0.3.69", optional = true }
+leptos = { path = "../../leptos", features = ["tracing"] }
+leptos_meta = { path = "../../meta" }
+leptos_axum = { path = "../../integrations/axum", optional = true }
+leptos_router = { path = "../../router" }
+serde = { version = "1.0", features = ["derive"] }
+thiserror = "1.0"
+tokio = { version = "1.39", features = [ "rt-multi-thread", "macros", "time" ], optional = true }
+tower = { version = "0.4.13", optional = true }
+tower-http = { version = "0.5.2", features = ["fs"], optional = true }
+wasm-bindgen = "0.2.92"
+web-sys = { version = "0.3.69", features = [ "AddEventListenerOptions", "Document", "Element", "Event", "EventListener", "EventTarget", "Performance", "Window" ], optional = true }
+
+[features]
+hydrate = [
+  "leptos/hydrate",
+  "dep:js-sys",
+  "dep:web-sys",
+]
+ssr = [
+  "dep:axum",
+  "dep:http-body-util",
+  "dep:tower",
+  "dep:tower-http",
+  "dep:tokio",
+  "leptos/ssr",
+  "leptos_meta/ssr",
+  "dep:leptos_axum",
+  "leptos_router/ssr",
+]
+
+[profile.release]
+panic = "abort"
+
+[profile.wasm-release]
+inherits = "release"
+opt-level = 'z'
+lto = true
+codegen-units = 1
+panic = "abort"
+
+[package.metadata.cargo-all-features]
+denylist = ["axum", "tower", "tower-http", "tokio", "sqlx", "leptos_axum"]
+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 = "axum_js_ssr"
+# 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/main.scss"
+# Assets source dir. All files found here will be copied and synchronized to site-root.
+# The assets-dir cannot have a sub directory with the same name/path as site-pkg-dir.
+#
+# Optional. Env: LEPTOS_ASSETS_DIR.
+assets-dir = "assets"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-addr = "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.
+#   [Windows] for non-WSL use "npx.cmd playwright test"
+#   This binary name can be checked in Powershell with Get-Command npx
+end2end-cmd = "npx playwright test"
+end2end-dir = "end2end"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults"
+# Set by cargo-leptos watch when building with that 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
+
+lib-profile-release = "wasm-release"

examples/axum_js_ssr/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Tommy Yu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

examples/axum_js_ssr/Makefile.toml

@@ -0,0 +1,8 @@
+extend = [
+    { path = "../cargo-make/main.toml" },
+    { path = "../cargo-make/cargo-leptos.toml" },
+]
+
+[env]
+
+CLIENT_PROCESS_NAME = "axum_js_ssr"

examples/axum_js_ssr/README.md

@@ -0,0 +1,10 @@
+# Leptos Axum JS SSR Example
+
+This example shows the various ways that JavaScript may be included into
+a Leptos application.  The intent is to demonstrate how this may be done
+and how it may cause the application to fail in an unexpected manner if
+done incorrectly.
+
+## Quick Start
+
+Run `cargo leptos watch` to run this example.

examples/axum_js_ssr/node_modules/@highlightjs/cdn-assets/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2006, Ivan Sagalaev.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

examples/axum_js_ssr/node_modules/@highlightjs/cdn-assets/README.md

@@ -0,0 +1,47 @@
+# Highlight.js CDN Assets
+
+**Note: this contains only a subset of files from the full package from NPM.**
+
+[![install size](https://packagephobia.now.sh/badge?p=highlight.js)](https://packagephobia.now.sh/result?p=highlight.js)
+
+**This package contains only the CDN build assets of highlight.js.**
+
+This may be what you want if you'd like to install the pre-built distributable highlight.js client-side assets via NPM. If you're wanting to use highlight.js mainly on the server-side you likely want the [highlight.js][1] package instead.
+
+To access these files via CDN:<br>
+https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@latest/build/
+
+**If you just want a single .js file with the common languages built-in:
+<https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@latest/build/highlight.min.js>**
+
+---
+
+## Highlight.js
+
+Highlight.js is a syntax highlighter written in JavaScript. It works in
+the browser as well as on the server. It works with pretty much any
+markup, doesn’t depend on any framework, and has automatic language
+detection.
+
+If you'd like to read the full README:<br>
+<https://github.com/highlightjs/highlight.js/blob/main/README.md>
+
+## License
+
+Highlight.js is released under the BSD License. See [LICENSE][7] file
+for details.
+
+## Links
+
+The official site for the library is at <https://highlightjs.org/>.
+
+The Github project may be found at: <https://github.com/highlightjs/highlight.js>
+
+Further in-depth documentation for the API and other topics is at
+<http://highlightjs.readthedocs.io/>.
+
+A list of the Core Team and contributors can be found in the [CONTRIBUTORS.md][8] file.
+
+[1]: https://www.npmjs.com/package/highlight.js
+[7]: https://github.com/highlightjs/highlight.js/blob/main/LICENSE
+[8]: https://github.com/highlightjs/highlight.js/blob/main/CONTRIBUTORS.md

examples/axum_js_ssr/node_modules/@highlightjs/cdn-assets/package.json

@@ -0,0 +1,93 @@
+{
+  "name": "@highlightjs/cdn-assets",
+  "description": "Syntax highlighting with language autodetection. (pre-compiled CDN assets)",
+  "keywords": [
+    "highlight",
+    "syntax"
+  ],
+  "homepage": "https://highlightjs.org/",
+  "version": "11.10.0",
+  "author": "Josh Goebel <hello@joshgoebel.com>",
+  "contributors": [
+    "Josh Goebel <hello@joshgoebel.com>",
+    "Egor Rogov <e.rogov@postgrespro.ru>",
+    "Vladimir Jimenez <me@allejo.io>",
+    "Ivan Sagalaev <maniac@softwaremaniacs.org>",
+    "Jeremy Hull <sourdrums@gmail.com>",
+    "Oleg Efimov <efimovov@gmail.com>",
+    "Gidi Meir Morris <gidi@gidi.io>",
+    "Jan T. Sott <git@idleberg.com>",
+    "Li Xuanji <xuanji@gmail.com>",
+    "Marcos Cáceres <marcos@marcosc.com>",
+    "Sang Dang <sang.dang@polku.io>"
+  ],
+  "bugs": {
+    "url": "https://github.com/highlightjs/highlight.js/issues"
+  },
+  "license": "BSD-3-Clause",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/highlightjs/highlight.js.git"
+  },
+  "sideEffects": [
+    "./es/common.js",
+    "./lib/common.js",
+    "*.css",
+    "*.scss"
+  ],
+  "scripts": {
+    "mocha": "mocha",
+    "lint": "eslint src/*.js src/lib/*.js demo/*.js tools/**/*.js --ignore-pattern vendor",
+    "lint-languages": "eslint --no-eslintrc -c .eslintrc.lang.js src/languages/**/*.js",
+    "build_and_test": "npm run build && npm run test",
+    "build_and_test_browser": "npm run build-browser && npm run test-browser",
+    "build": "node ./tools/build.js -t node",
+    "build-cdn": "node ./tools/build.js -t cdn",
+    "build-browser": "node ./tools/build.js -t browser :common",
+    "devtool": "npx http-server",
+    "test": "mocha test",
+    "test-markup": "mocha test/markup",
+    "test-detect": "mocha test/detect",
+    "test-browser": "mocha test/browser",
+    "test-parser": "mocha test/parser"
+  },
+  "engines": {
+    "node": ">=12.0.0"
+  },
+  "devDependencies": {
+    "@colors/colors": "^1.6.0",
+    "@rollup/plugin-commonjs": "^26.0.1",
+    "@rollup/plugin-json": "^6.0.1",
+    "@rollup/plugin-node-resolve": "^15.2.3",
+    "@types/mocha": "^10.0.2",
+    "@typescript-eslint/eslint-plugin": "^7.15.0",
+    "@typescript-eslint/parser": "^7.15.0",
+    "clean-css": "^5.3.2",
+    "cli-table": "^0.3.1",
+    "commander": "^12.1.0",
+    "css": "^3.0.0",
+    "css-color-names": "^1.0.1",
+    "deep-freeze-es6": "^3.0.2",
+    "del": "^7.1.0",
+    "dependency-resolver": "^2.0.1",
+    "eslint": "^8.57.0",
+    "eslint-config-standard": "^17.1.0",
+    "eslint-plugin-import": "^2.28.1",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^6.1.1",
+    "glob": "^8.1.0",
+    "glob-promise": "^6.0.5",
+    "handlebars": "^4.7.8",
+    "http-server": "^14.1.1",
+    "jsdom": "^24.1.0",
+    "lodash": "^4.17.20",
+    "mocha": "^10.2.0",
+    "refa": "^0.4.1",
+    "rollup": "^4.0.2",
+    "should": "^13.2.3",
+    "terser": "^5.21.0",
+    "tiny-worker": "^2.3.0",
+    "typescript": "^5.2.2",
+    "wcag-contrast": "^3.0.0"
+  }
+}

examples/axum_js_ssr/node_modules/@highlightjs/cdn-assets/styles/github-dark.min.css

@@ -0,0 +1,10 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}/*!
+  Theme: GitHub Dark
+  Description: Dark theme as seen on github.com
+  Author: github.com
+  Maintainer: @Hirse
+  Updated: 2021-05-15
+
+  Outdated base version: https://github.com/primer/github-syntax-dark
+  Current colors taken from GitHub's CSS
+*/.hljs{color:#c9d1d9;background:#0d1117}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#ff7b72}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#d2a8ff}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id,.hljs-variable{color:#79c0ff}.hljs-meta .hljs-string,.hljs-regexp,.hljs-string{color:#a5d6ff}.hljs-built_in,.hljs-symbol{color:#ffa657}.hljs-code,.hljs-comment,.hljs-formula{color:#8b949e}.hljs-name,.hljs-quote,.hljs-selector-pseudo,.hljs-selector-tag{color:#7ee787}.hljs-subst{color:#c9d1d9}.hljs-section{color:#1f6feb;font-weight:700}.hljs-bullet{color:#f2cc60}.hljs-emphasis{color:#c9d1d9;font-style:italic}.hljs-strong{color:#c9d1d9;font-weight:700}.hljs-addition{color:#aff5b4;background-color:#033a16}.hljs-deletion{color:#ffdcd7;background-color:#67060c}

examples/axum_js_ssr/node_modules/@highlightjs/cdn-assets/styles/github.min.css

@@ -0,0 +1,10 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}/*!
+  Theme: GitHub
+  Description: Light theme as seen on github.com
+  Author: github.com
+  Maintainer: @Hirse
+  Updated: 2021-05-15
+
+  Outdated base version: https://github.com/primer/github-syntax-light
+  Current colors taken from GitHub's CSS
+*/.hljs{color:#24292e;background:#fff}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#d73a49}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#6f42c1}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id,.hljs-variable{color:#005cc5}.hljs-meta .hljs-string,.hljs-regexp,.hljs-string{color:#032f62}.hljs-built_in,.hljs-symbol{color:#e36209}.hljs-code,.hljs-comment,.hljs-formula{color:#6a737d}.hljs-name,.hljs-quote,.hljs-selector-pseudo,.hljs-selector-tag{color:#22863a}.hljs-subst{color:#24292e}.hljs-section{color:#005cc5;font-weight:700}.hljs-bullet{color:#735c0f}.hljs-emphasis{color:#24292e;font-style:italic}.hljs-strong{color:#24292e;font-weight:700}.hljs-addition{color:#22863a;background-color:#f0fff4}.hljs-deletion{color:#b31d28;background-color:#ffeef0}

examples/axum_js_ssr/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "axum_js_ssr",
+  "dependencies": {
+    "@highlightjs/cdn-assets": "^11.10.0"
+  }
+}

examples/axum_js_ssr/rust-toolchain.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "stable" # test change

examples/axum_js_ssr/src/api.rs

@@ -0,0 +1,8 @@
+use leptos::{prelude::ServerFnError, server};
+
+#[server]
+pub async fn fetch_code() -> Result<String, ServerFnError> {
+    // emulate loading of code from a database/version control/etc
+    tokio::time::sleep(std::time::Duration::from_millis(50)).await;
+    Ok(crate::consts::CH05_02A.to_string())
+}

examples/axum_js_ssr/src/consts.rs

@@ -0,0 +1,39 @@
+// Example programs from the Rust Programming Language Book
+
+pub const CH03_05A: &str = r#"fn main() {
+    let number = 3;
+
+    if number < 5 {
+        println!("condition was true");
+    } else {
+        println!("condition was false");
+    }
+}
+
+
+
+
+"#;
+
+// For some reason, swapping the code examples "fixes" example 6.  It
+// might have something to do with the lower complexity of highlighting
+// a shorter example.  Anyway, including extra newlines for the shorter
+// example to match with the longer in order to avoid reflowing the
+// table during the async resource loading for CSR.
+
+pub const CH05_02A: &str = r#"fn main() {
+    let width1 = 30;
+    let height1 = 50;
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        area(width1, height1)
+    );
+}
+
+fn area(width: u32, height: u32) -> u32 {
+    width * height
+}
+"#;
+
+pub const LEPTOS_HYDRATED: &str = "_leptos_hydrated";

examples/axum_js_ssr/src/hljs.rs

@@ -0,0 +1,59 @@
+#[cfg(not(feature = "ssr"))]
+mod csr {
+    use gloo_utils::format::JsValueSerdeExt;
+    use js_sys::{
+        Object,
+        Reflect::{get, set},
+    };
+    use wasm_bindgen::{prelude::wasm_bindgen, JsValue};
+
+    #[wasm_bindgen(
+        module = "/node_modules/@highlightjs/cdn-assets/es/highlight.min.js"
+    )]
+    extern "C" {
+        type HighlightOptions;
+
+        #[wasm_bindgen(catch, js_namespace = default, js_name = highlight)]
+        fn highlight_lang(
+            code: String,
+            options: Object,
+        ) -> Result<Object, JsValue>;
+
+        #[wasm_bindgen(js_namespace = default, js_name = highlightAll)]
+        pub fn highlight_all();
+    }
+
+    // Keeping the `ignoreIllegals` argument out of the default case, and since there is no optional arguments
+    // in Rust, this will have to be provided in a separate function (e.g. `highlight_ignore_illegals`), much
+    // like how `web_sys` does it for the browser APIs.  For simplicity, only the highlighted HTML code is
+    // returned on success, and None on error.
+    pub fn highlight(code: String, lang: String) -> Option<String> {
+        let options = js_sys::Object::new();
+        set(&options, &"language".into(), &lang.into())
+            .expect("failed to assign lang to options");
+        highlight_lang(code, options)
+            .map(|result| {
+                let value = get(&result, &"value".into())
+                    .expect("HighlightResult failed to contain the value key");
+                value.into_serde().expect("Value should have been a string")
+            })
+            .ok()
+    }
+}
+
+#[cfg(feature = "ssr")]
+mod ssr {
+    // noop under ssr
+    pub fn highlight_all() {}
+
+    // TODO see if there is a Rust-based solution that will enable isomorphic rendering for this feature.
+    // the current (disabled) implementation simply calls html_escape.
+    // pub fn highlight(code: String, _lang: String) -> Option<String> {
+    //     Some(html_escape::encode_text(&code).into_owned())
+    // }
+}
+
+#[cfg(not(feature = "ssr"))]
+pub use csr::*;
+#[cfg(feature = "ssr")]
+pub use ssr::*;

examples/axum_js_ssr/src/lib.rs

@@ -0,0 +1,51 @@
+pub mod api;
+pub mod app;
+pub mod consts;
+pub mod hljs;
+
+#[cfg(feature = "hydrate")]
+#[wasm_bindgen::prelude::wasm_bindgen]
+pub fn hydrate() {
+    use app::*;
+    use consts::LEPTOS_HYDRATED;
+    use std::panic;
+    panic::set_hook(Box::new(|info| {
+        // this custom hook will call out to show the usual error log at
+        // the console while also attempt to update the UI to indicate
+        // a restart of the application is required to continue.
+        console_error_panic_hook::hook(info);
+        let window = leptos::prelude::window();
+        if !matches!(
+            js_sys::Reflect::get(&window, &wasm_bindgen::JsValue::from_str(LEPTOS_HYDRATED)),
+            Ok(t) if t == true
+        ) {
+            let document = leptos::prelude::document();
+            let _ = document.query_selector("#reset").map(|el| {
+                el.map(|el| {
+                    el.set_class_name("panicked");
+                })
+            });
+            let _ = document.query_selector("#notice").map(|el| {
+                el.map(|el| {
+                    el.set_class_name("panicked");
+                })
+            });
+        }
+    }));
+    leptos::mount::hydrate_body(App);
+
+    let window = leptos::prelude::window();
+    js_sys::Reflect::set(
+        &window,
+        &wasm_bindgen::JsValue::from_str(LEPTOS_HYDRATED),
+        &wasm_bindgen::JsValue::TRUE,
+    )
+    .expect("error setting hydrated status");
+    let event = web_sys::Event::new(LEPTOS_HYDRATED)
+        .expect("error creating hydrated event");
+    let document = leptos::prelude::document();
+    document
+        .dispatch_event(&event)
+        .expect("error dispatching hydrated event");
+    leptos::logging::log!("dispatched hydrated event");
+}

examples/axum_js_ssr/src/main.rs

@@ -0,0 +1,152 @@
+#[cfg(feature = "ssr")]
+mod latency {
+    use std::sync::{Mutex, OnceLock};
+    pub static LATENCY: OnceLock<
+        Mutex<std::iter::Cycle<std::slice::Iter<'_, u64>>>,
+    > = OnceLock::new();
+    pub static ES_LATENCY: OnceLock<
+        Mutex<std::iter::Cycle<std::slice::Iter<'_, u64>>>,
+    > = OnceLock::new();
+}
+
+#[cfg(feature = "ssr")]
+#[tokio::main]
+async fn main() {
+    use axum::{
+        body::Body,
+        extract::Request,
+        http::{
+            header::{self, HeaderValue},
+            StatusCode,
+        },
+        middleware::{self, Next},
+        response::{IntoResponse, Response},
+        routing::get,
+        Router,
+    };
+    use axum_js_ssr::app::*;
+    use http_body_util::BodyExt;
+    use leptos::prelude::*;
+    use leptos_axum::{generate_route_list, LeptosRoutes};
+
+    latency::LATENCY.get_or_init(|| [0, 4, 40, 400].iter().cycle().into());
+    latency::ES_LATENCY.get_or_init(|| [0].iter().cycle().into());
+    // Having the ES_LATENCY (a cycle of latency for the loading of the es
+    // module) in an identical cycle as LATENCY (for the standard version)
+    // adversely influences the intended demo, as this ultimately delays
+    // hydration when set too high which can cause panic under every case.
+    // If you want to test the effects of the delay just modify the list of
+    // values for the desired cycle of delays.
+
+    let conf = get_configuration(None).unwrap();
+    let addr = conf.leptos_options.site_addr;
+    let leptos_options = conf.leptos_options;
+    // Generate the list of routes in your Leptos App
+    let routes = generate_route_list(App);
+
+    async fn highlight_js() -> impl IntoResponse {
+        (
+            [(header::CONTENT_TYPE, "text/javascript")],
+            include_str!(
+                "../node_modules/@highlightjs/cdn-assets/highlight.min.js"
+            ),
+        )
+    }
+
+    async fn latency_for_highlight_js(
+        req: Request,
+        next: Next,
+    ) -> Result<impl IntoResponse, (StatusCode, String)> {
+        let uri_parts = &mut req.uri().path().rsplit('/');
+
+        let is_highlightjs = uri_parts.next() == Some("highlight.min.js");
+        let es = uri_parts.next() == Some("es");
+        let module_type = if es { "es module " } else { "standard " };
+        let res = next.run(req).await;
+        if is_highlightjs {
+            // additional processing if the filename is the test subject
+            let (mut parts, body) = res.into_parts();
+            let bytes = body
+                .collect()
+                .await
+                .map_err(|err| {
+                    (
+                        StatusCode::BAD_REQUEST,
+                        format!("error reading body: {err}"),
+                    )
+                })?
+                .to_bytes();
+            let latency = if es {
+                &latency::ES_LATENCY
+            } else {
+                &latency::LATENCY
+            };
+
+            let delay = match latency
+                .get()
+                .expect("latency cycle wasn't set up")
+                .try_lock()
+            {
+                Ok(ref mut mutex) => {
+                    *mutex.next().expect("cycle always has next")
+                }
+                Err(_) => 0,
+            };
+
+            // inject the logging of the delay used into the target script
+            log!(
+                "loading {module_type}highlight.min.js with latency of \
+                 {delay} ms"
+            );
+            let js_log = format!(
+                "\nconsole.log('loaded {module_type}highlight.js with a \
+                 minimum latency of {delay} ms');"
+            );
+            tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+
+            let bytes = [bytes, js_log.into()].concat();
+            let length = bytes.len();
+            let body = Body::from(bytes);
+
+            // Provide the bare minimum set of headers to avoid browser cache.
+            parts.headers = header::HeaderMap::from_iter(
+                [
+                    (
+                        header::CONTENT_TYPE,
+                        HeaderValue::from_static("text/javascript"),
+                    ),
+                    (header::CONTENT_LENGTH, HeaderValue::from(length)),
+                ]
+                .into_iter(),
+            );
+            Ok(Response::from_parts(parts, body))
+        } else {
+            Ok(res)
+        }
+    }
+
+    let app = Router::new()
+        .route("/highlight.min.js", get(highlight_js))
+        .leptos_routes(&leptos_options, routes, {
+            let leptos_options = leptos_options.clone();
+            move || shell(leptos_options.clone())
+        })
+        .fallback(leptos_axum::file_and_error_handler(shell))
+        .layer(middleware::from_fn(latency_for_highlight_js))
+        .with_state(leptos_options);
+
+    // run our app with hyper
+    // `axum::Server` is a re-export of `hyper::Server`
+    log!("listening on http://{}", &addr);
+    let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
+    axum::serve(listener, app.into_make_service())
+        .await
+        .unwrap();
+}
+
+#[cfg(not(feature = "ssr"))]
+pub fn main() {
+    // no client-side main function
+    // unless we want this to work with e.g., Trunk for pure client-side testing
+    // see lib.rs for hydration function instead
+}

examples/axum_js_ssr/style/main.scss

@@ -0,0 +1,171 @@
+html, body {
+    margin: 0;
+    padding: 0;
+    font-family: sans-serif;
+    height: 100vh;
+    overflow: hidden;
+}
+
+body {
+    display: flex;
+    flex-flow: row nowrap;
+}
+
+nav {
+    min-width: 17em;
+    height: 100vh;
+    counter-reset: example-counter 0;
+    list-style-type: none;
+    list-style-position: outside;
+    overflow: auto;
+}
+
+nav a {
+    display: block;
+    padding: 0.5em 2em;
+    text-decoration: none;
+}
+
+nav a small {
+    display: block;
+}
+
+nav a.example::before {
+    counter-reset: subexample-counter 0;
+    counter-increment: example-counter 1;
+    content: counter(example-counter) ". ";
+}
+
+nav a.subexample::before {
+    counter-increment: subexample-counter 1;
+    content: counter(example-counter) "." counter(subexample-counter) " ";
+}
+
+div#notice {
+    display: none;
+}
+
+main div#notice.panicked {
+    position: sticky;
+    top: 0;
+    padding: 0.5em 2em;
+    display: block;
+}
+
+main {
+    width: 100%;
+    overflow: auto;
+}
+
+main article {
+    max-width: 60em;
+    margin: 0 1em;
+    padding: 0 1em;
+}
+
+main p, main li {
+    line-height: 1.3em;
+}
+
+main li pre code, main div pre code {
+    display: block;
+    line-height: normal;
+}
+
+main ol, main ul {
+    padding-left: 2em;
+}
+
+h2>code, p>code, li>code {
+    border-radius: 3px;
+    padding: 2px;
+}
+
+li pre code, div pre code {
+    margin: 0 !important;
+    padding: 0 !important;
+}
+
+#code-demo {
+    overflow-x: auto;
+}
+
+#code-demo table {
+    width: 50em;
+    margin: auto;
+}
+
+#code-demo table td {
+    vertical-align: top;
+}
+
+#code-demo table code {
+    display: block;
+    padding: 1em;
+}
+
+@media (prefers-color-scheme: light) {
+    nav {
+        background: #f7f7f7;
+    }
+
+    nav a {
+        color: #000;
+    }
+
+    nav a[aria-current="page"] {
+        background-color: #e0e0e0;
+    }
+
+    nav a:hover, h2>code, p>code, li>code  {
+        background-color: #e7e7e7;
+    }
+
+    nav a.panicked, main div#notice.panicked {
+        background: #fdd;
+    }
+
+    main div#notice.panicked a {
+        color: #000;
+    }
+
+    nav a.section {
+        border-bottom: 1px solid #777;
+    }
+}
+
+@media (prefers-color-scheme: dark) {
+    nav {
+        background: #080808;
+    }
+
+    nav a {
+        color: #fff;
+    }
+
+    nav a[aria-current="page"] {
+        background-color: #3f3f3f;
+    }
+
+    nav a:hover, h2>code, p>code, li>code  {
+        background-color: #383838;
+    }
+
+    nav a.panicked, main div#notice.panicked {
+        background: #733;
+    }
+
+    main div#notice.panicked a {
+        color: #fff;
+    }
+
+    nav a.section {
+        border-bottom: 1px solid #888;
+    }
+}
+
+// Just include the raw style as-is because I can't find a quick and easy way to import them just for the
+// appropriate media type...
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}
+@media (prefers-color-scheme: light){.hljs{color:#24292e;background:#fff}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#d73a49}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#6f42c1}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id,.hljs-variable{color:#005cc5}.hljs-meta .hljs-string,.hljs-regexp,.hljs-string{color:#032f62}.hljs-built_in,.hljs-symbol{color:#e36209}.hljs-code,.hljs-comment,.hljs-formula{color:#6a737d}.hljs-name,.hljs-quote,.hljs-selector-pseudo,.hljs-selector-tag{color:#22863a}.hljs-subst{color:#24292e}.hljs-section{color:#005cc5;font-weight:700}.hljs-bullet{color:#735c0f}.hljs-emphasis{color:#24292e;font-style:italic}.hljs-strong{color:#24292e;font-weight:700}.hljs-addition{color:#22863a;background-color:#f0fff4}.hljs-deletion{color:#b31d28;background-color:#ffeef0}}
+@media (prefers-color-scheme: dark){.hljs{color:#c9d1d9;background:#0d1117}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#ff7b72}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#d2a8ff}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id,.hljs-variable{color:#79c0ff}.hljs-meta .hljs-string,.hljs-regexp,.hljs-string{color:#a5d6ff}.hljs-built_in,.hljs-symbol{color:#ffa657}.hljs-code,.hljs-comment,.hljs-formula{color:#8b949e}.hljs-name,.hljs-quote,.hljs-selector-pseudo,.hljs-selector-tag{color:#7ee787}.hljs-subst{color:#c9d1d9}.hljs-section{color:#1f6feb;font-weight:700}.hljs-bullet{color:#f2cc60}.hljs-emphasis{color:#c9d1d9;font-style:italic}.hljs-strong{color:#c9d1d9;font-weight:700}.hljs-addition{color:#aff5b4;background-color:#033a16}.hljs-deletion{color:#ffdcd7;background-color:#67060c}}

examples/counter_isomorphic/Cargo.toml

@@ -2,6 +2,8 @@
 name = "counter_isomorphic"
 version = "0.1.0"
 edition = "2021"
+# std::sync::LazyLock is stabilized in Rust version 1.80.0
+rust-version = "1.80.0"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
@@ -17,7 +19,6 @@ broadcaster = "1.0"
 console_log = "1.0"
 console_error_panic_hook = "0.1.7"
 futures = "0.3.30"
-lazy_static = "1.5"
 leptos = { path = "../../leptos" }
 leptos_actix = { path = "../../integrations/actix", optional = true }
 leptos_router = { path = "../../router" }
@@ -46,13 +47,13 @@ denylist = ["actix-files", "actix-web", "leptos_actix"]
 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   
+# 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.
 # When NOT using cargo-leptos this must be updated to "." or the counters will not work. The above warning still applies if you do switch to cargo-leptos later.
 site-root = "target/site"
 # The site-root relative folder where all compiled output (JS, WASM and CSS) is written
-# Defaults to pkg	
+# 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"

examples/counter_isomorphic/src/counters.rs

@@ -10,12 +10,12 @@ use tracing::instrument;
 pub mod ssr_imports {
     pub use broadcaster::BroadcastChannel;
     pub use std::sync::atomic::{AtomicI32, Ordering};
+    use std::sync::LazyLock;
 
     pub static COUNT: AtomicI32 = AtomicI32::new(0);
 
-    lazy_static::lazy_static! {
-        pub static ref COUNT_CHANNEL: BroadcastChannel<i32> = BroadcastChannel::new();
-    }
+    pub static COUNT_CHANNEL: LazyLock<BroadcastChannel<i32>> =
+        LazyLock::new(BroadcastChannel::<i32>::new);
 }
 
 #[server]

examples/counters/.gitignore

@@ -0,0 +1,6 @@
+# Support playwright testing
+node_modules/
+test-results/
+end2end/playwright-report/
+playwright/.cache/
+pnpm-lock.yaml

examples/counters/Makefile.toml

@@ -2,4 +2,5 @@ extend = [
     { path = "../cargo-make/main.toml" },
     { path = "../cargo-make/wasm-test.toml" },
     { path = "../cargo-make/trunk_server.toml" },
+    { path = "../cargo-make/playwright-trunk-test.toml" },
 ]

examples/counters/e2e/.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+/test-results/
+/playwright-report/
+/playwright/.cache/

examples/counters/e2e/package-lock.json

@@ -0,0 +1,83 @@
+{
+  "name": "grip",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "grip",
+      "devDependencies": {
+        "@playwright/test": "^1.35.1"
+      }
+    },
+    "node_modules/.pnpm/@playwright+test@1.33.0": {
+      "extraneous": true
+    },
+    "node_modules/.pnpm/@types+node@20.2.1/node_modules/@types/node": {
+      "version": "20.2.1",
+      "extraneous": true,
+      "license": "MIT"
+    },
+    "node_modules/.pnpm/playwright-core@1.33.0/node_modules/playwright-core": {
+      "version": "1.33.0",
+      "extraneous": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/@playwright/test": {
+      "version": "1.35.1",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.35.1.tgz",
+      "integrity": "sha512-b5YoFe6J9exsMYg0pQAobNDR85T1nLumUYgUTtKm4d21iX2L7WqKq9dW8NGJ+2vX0etZd+Y7UeuqsxDXm9+5ZA==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*",
+        "playwright-core": "1.35.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=16"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "20.3.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.3.1.tgz",
+      "integrity": "sha512-EhcH/wvidPy1WeML3TtYFGR83UzjxeWRen9V402T8aUGYsCHOmfoisV3ZSg03gAFIbLq8TnWOJ0f4cALtnSEUg==",
+      "dev": true
+    },
+    "node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.35.1",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.35.1.tgz",
+      "integrity": "sha512-pNXb6CQ7OqmGDRspEjlxE49w+4YtR6a3X6mT1hZXeJHWmsEz7SunmvZeiG/+y1yyMZdHnnn73WKYdtV1er0Xyg==",
+      "dev": true,
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    }
+  }
+}

examples/counters/e2e/package.json

@@ -0,0 +1,10 @@
+{
+  "private": "true",
+  "scripts": {},
+  "devDependencies": {
+    "@playwright/test": "^1.46.1"
+  },
+  "dependencies": {
+    "pnpm": "^9.7.1"
+  }
+}

examples/counters/e2e/playwright.config.ts

@@ -0,0 +1,77 @@
+import { defineConfig, devices } from "@playwright/test";
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// require('dotenv').config();
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+export default defineConfig({
+  testDir: "./tests",
+  /* Run tests in files in parallel */
+  fullyParallel: true,
+  /* Fail the build on CI if you accidentally left test.only in the source code. */
+  forbidOnly: !process.env.DEV,
+  /* Retry on CI only */
+  retries: process.env.DEV ? 0 : 10,
+  /* Opt out of parallel tests on CI. */
+  workers: process.env.DEV ? 1 : 1,
+  /* Reporter to use. See https://playwright.dev/docs/test-reporters */
+  reporter: [["html", { open: "never" }], ["list"]],
+  /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    baseURL: "http://127.0.0.1:8080",
+
+    /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
+    trace: "on-first-retry",
+  },
+
+  /* Configure projects for major browsers */
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+
+    // {
+    //   name: "firefox",
+    //   use: { ...devices["Desktop Firefox"] },
+    // },
+
+    // {
+    //   name: "webkit",
+    //   use: { ...devices["Desktop Safari"] },
+    // },
+
+    /* Test against mobile viewports. */
+    // {
+    //   name: 'Mobile Chrome',
+    //   use: { ...devices['Pixel 5'] },
+    // },
+    // {
+    //   name: 'Mobile Safari',
+    //   use: { ...devices['iPhone 12'] },
+    // },
+
+    /* Test against branded browsers. */
+    // {
+    //   name: 'Microsoft Edge',
+    //   use: { ...devices['Desktop Edge'], channel: 'msedge' },
+    // },
+    // {
+    //   name: 'Google Chrome',
+    //   use: { ..devices['Desktop Chrome'], channel: 'chrome' },
+    // },
+  ],
+
+  /* Run your local dev server before starting the tests */
+  // webServer: {
+  //   command: "cd ../ && trunk serve",
+  //   url: "http://127.0.0.1:8080",
+  //   reuseExistingServer: false, //!process.env.CI,
+  // },
+});

examples/counters/e2e/tests/add_1k_counters.spec.ts

@@ -0,0 +1,19 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Add 1000 Counters", () => {
+  test("should increase the number of counters", async ({ page }) => {
+    const ui = new CountersPage(page);
+
+    await Promise.all([
+      await ui.goto(),
+      await ui.addOneThousandCountersButton.waitFor(),
+    ]);
+
+    await ui.addOneThousandCounters();
+    await ui.addOneThousandCounters();
+    await ui.addOneThousandCounters();
+
+    await expect(ui.counters).toHaveText("3000");
+  });
+});

examples/counters/e2e/tests/add_counter.spec.ts

@@ -0,0 +1,15 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Add Counter", () => {
+  test("should increase the number of counters", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+
+    await ui.addCounter();
+    await ui.addCounter();
+    await ui.addCounter();
+
+    await expect(ui.counters).toHaveText("3");
+  });
+});

examples/counters/e2e/tests/clear_counters.spec.ts

@@ -0,0 +1,18 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Clear Counters", () => {
+  test("should reset the counts", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+
+    await ui.addCounter();
+    await ui.addCounter();
+    await ui.addCounter();
+
+    await ui.clearCounters();
+
+    await expect(ui.total).toHaveText("0");
+    await expect(ui.counters).toHaveText("0");
+  });
+});

examples/counters/e2e/tests/decrement_count.spec.ts

@@ -0,0 +1,16 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Decrement Count", () => {
+  test("should decrease the total count", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+    await ui.addCounter();
+
+    await ui.decrementCount();
+    await ui.decrementCount();
+    await ui.decrementCount();
+
+    await expect(ui.total).toHaveText("-3");
+  });
+});

examples/counters/e2e/tests/enter_count.spec.ts

@@ -0,0 +1,30 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Enter Count", () => {
+  test("should increase the total count", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+    await ui.addCounter();
+
+    await ui.enterCount("5");
+
+    await expect(ui.total).toHaveText("5");
+    await expect(ui.counters).toHaveText("1");
+  });
+
+  test("should decrease the total count", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+    await ui.addCounter();
+    await ui.addCounter();
+    await ui.addCounter();
+
+    await ui.enterCount("100");
+    await ui.enterCount("100", 1);
+    await ui.enterCount("100", 2);
+    await ui.enterCount("50", 1);
+
+    await expect(ui.total).toHaveText("250");
+  });
+});

examples/counters/e2e/tests/fixtures/counters_page.ts

@@ -0,0 +1,98 @@
+import { expect, Locator, Page } from "@playwright/test";
+
+export class CountersPage {
+  readonly page: Page;
+  readonly addCounterButton: Locator;
+  readonly addOneThousandCountersButton: Locator;
+  readonly clearCountersButton: Locator;
+
+  readonly incrementCountButton: Locator;
+  readonly counterInput: Locator;
+  readonly decrementCountButton: Locator;
+  readonly removeCountButton: Locator;
+
+  readonly total: Locator;
+  readonly counters: Locator;
+
+  constructor(page: Page) {
+    this.page = page;
+
+    this.addCounterButton = page.locator("button", { hasText: "Add Counter" });
+
+    this.addOneThousandCountersButton = page.locator("button", {
+      hasText: "Add 1000 Counters",
+    });
+
+    this.clearCountersButton = page.locator("button", {
+      hasText: "Clear Counters",
+    });
+
+    this.decrementCountButton = page.locator("button", {
+      hasText: "-1",
+    });
+
+    this.incrementCountButton = page.locator("button", {
+      hasText: "+1",
+    });
+
+    this.removeCountButton = page.locator("button", {
+      hasText: "x",
+    });
+
+    this.total = page.getByTestId("total");
+
+    this.counters = page.getByTestId("counters");
+
+    this.counterInput = page.getByRole("textbox");
+  }
+
+  async goto() {
+    await this.page.goto("/");
+  }
+
+  async addCounter() {
+    await Promise.all([
+      this.addCounterButton.waitFor(),
+      this.addCounterButton.click(),
+    ]);
+  }
+
+  async addOneThousandCounters() {
+    this.addOneThousandCountersButton.click();
+  }
+
+  async decrementCount(index: number = 0) {
+    await Promise.all([
+      this.decrementCountButton.nth(index).waitFor(),
+      this.decrementCountButton.nth(index).click(),
+    ]);
+  }
+
+  async incrementCount(index: number = 0) {
+    await Promise.all([
+      this.incrementCountButton.nth(index).waitFor(),
+      this.incrementCountButton.nth(index).click(),
+    ]);
+  }
+
+  async clearCounters() {
+    await Promise.all([
+      this.clearCountersButton.waitFor(),
+      this.clearCountersButton.click(),
+    ]);
+  }
+
+  async enterCount(count: string, index: number = 0) {
+    await Promise.all([
+      this.counterInput.nth(index).waitFor(),
+      this.counterInput.nth(index).fill(count),
+    ]);
+  }
+
+  async removeCounter(index: number = 0) {
+    await Promise.all([
+      this.removeCountButton.nth(index).waitFor(),
+      this.removeCountButton.nth(index).click(),
+    ]);
+  }
+}

examples/counters/e2e/tests/increment_count.spec.ts

@@ -0,0 +1,16 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Increment Count", () => {
+  test("should increase the total count", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+    await ui.addCounter();
+
+    await ui.incrementCount();
+    await ui.incrementCount();
+    await ui.incrementCount();
+
+    await expect(ui.total).toHaveText("3");
+  });
+});

examples/counters/e2e/tests/remove_counter.spec.ts

@@ -0,0 +1,17 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Remove Counter", () => {
+  test("should decrement the number of counters", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+
+    await ui.addCounter();
+    await ui.addCounter();
+    await ui.addCounter();
+
+    await ui.removeCounter(1);
+
+    await expect(ui.counters).toHaveText("2");
+  });
+});

examples/counters/e2e/tests/view_counters.spec.ts

@@ -0,0 +1,19 @@
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("View Counters", () => {
+  test("should see the title", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+
+    await expect(page).toHaveTitle("Counters");
+  });
+
+  test("should see the initial counts", async ({ page }) => {
+    const counters = new CountersPage(page);
+    await counters.goto();
+
+    await expect(counters.total).toHaveText("0");
+    await expect(counters.counters).toHaveText("0");
+  });
+});

examples/counters/index.html

@@ -2,6 +2,7 @@
 <html>
 	<head>
 		<link data-trunk rel="rust" data-wasm-opt="z" data-weak-refs/>
+		<title>Counters</title>
 	</head>
 	<body></body>
-</html>
+</html>

examples/counters/src/lib.rs

@@ -1,4 +1,4 @@
-use leptos::prelude::{signal::*, *};
+use leptos::prelude::*;
 
 const MANY_COUNTERS: usize = 1000;
 
@@ -44,12 +44,13 @@ pub fn Counters() -> impl IntoView {
             <button on:click=clear_counters>"Clear Counters"</button>
             <p>
                 "Total: "
-                <span>
+                <span data-testid="total">
                     {move || {
                         counters.get().iter().map(|(_, count)| count.get()).sum::<i32>().to_string()
                     }}
 
-                </span> " from " <span>{move || counters.get().len().to_string()}</span>
+                </span> " from "
+                <span data-testid="counters">{move || counters.get().len().to_string()}</span>
                 " counters."
             </p>
             <ul>

examples/counters/tests/web.rs

@@ -23,7 +23,7 @@ async fn inc() {
         div.inner_html(),
         "<button>Add Counter</button><button>Add 1000 \
          Counters</button><button>Clear Counters</button><p>Total: \
-         <span>0</span> from <span>0</span> counters.</p><ul><!----></ul>"
+         <span data-testid=\"total\">0</span> from <span data-testid=\"counters\">0</span> counters.</p><ul><!----></ul>"
     );
 
     // add 3 counters
@@ -38,7 +38,7 @@ async fn inc() {
         div.inner_html(),
         "<button>Add Counter</button><button>Add 1000 \
          Counters</button><button>Clear Counters</button><p>Total: \
-         <span>0</span> from <span>3</span> \
+         <span data-testid=\"total\">0</span> from <span data-testid=\"counters\">3</span> \
          counters.</p><ul><li><button>-1</button><input \
          type=\"text\"><span>0</span><button>+1</button><button>x</button></\
          li><li><button>-1</button><input \
@@ -80,7 +80,7 @@ async fn inc() {
         div.inner_html(),
         "<button>Add Counter</button><button>Add 1000 \
          Counters</button><button>Clear Counters</button><p>Total: \
-         <span>6</span> from <span>3</span> \
+         <span data-testid=\"total\">6</span> from <span data-testid=\"counters\">3</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 \
@@ -105,7 +105,7 @@ async fn inc() {
         div.inner_html(),
         "<button>Add Counter</button><button>Add 1000 \
          Counters</button><button>Clear Counters</button><p>Total: \
-         <span>5</span> from <span>2</span> \
+         <span data-testid=\"total\">5</span> from <span data-testid=\"counters\">2</span> \
          counters.</p><ul><li><button>-1</button><input \
          type=\"text\"><span>2</span><button>+1</button><button>x</button></\
          li><li><button>-1</button><input \

examples/gtk/Makefile.toml

@@ -0,0 +1 @@
+extend = [{ path = "../cargo-make/main.toml" }]

examples/gtk/src/leptos_gtk.rs

@@ -1,6 +1,5 @@
 use self::properties::Connect;
 use gtk::{
-    ffi::GtkWidget,
     glib::{
         object::{IsA, IsClass, ObjectExt},
         Object, Value,
@@ -16,7 +15,7 @@ use leptos::{
     },
 };
 use next_tuple::NextTuple;
-use std::{borrow::Cow, marker::PhantomData};
+use std::marker::PhantomData;
 
 #[derive(Debug)]
 pub struct LeptosGtk;
@@ -157,13 +156,13 @@ impl Renderer for LeptosGtk {
     }
 
     fn remove_node(
-        parent: &Self::Element,
-        child: &Self::Node,
+        _parent: &Self::Element,
+        _child: &Self::Node,
     ) -> Option<Self::Node> {
         todo!()
     }
 
-    fn remove(node: &Self::Node) {
+    fn remove(_node: &Self::Node) {
         todo!()
     }
 
@@ -171,19 +170,19 @@ impl Renderer for LeptosGtk {
         node.0.parent().map(Element::from)
     }
 
-    fn first_child(node: &Self::Node) -> Option<Self::Node> {
+    fn first_child(_node: &Self::Node) -> Option<Self::Node> {
         todo!()
     }
 
-    fn next_sibling(node: &Self::Node) -> Option<Self::Node> {
+    fn next_sibling(_node: &Self::Node) -> Option<Self::Node> {
         todo!()
     }
 
     fn log_node(node: &Self::Node) {
-        todo!()
+        println!("{node:?}");
     }
 
-    fn clear_children(parent: &Self::Element) {
+    fn clear_children(_parent: &Self::Element) {
         todo!()
     }
 }
@@ -368,7 +367,22 @@ where
         })
     }
 
-    fn rebuild(self, widget: &Element, state: &mut Self::State) {}
+    fn rebuild(self, widget: &Element, state: &mut Self::State) {
+        let prev_value = state.take_value();
+        let widget = widget.to_owned();
+        *state = RenderEffect::new_with_value(
+            move |prev| {
+                let value = self();
+                if let Some(mut state) = prev {
+                    value.rebuild(&widget, &mut state);
+                    state
+                } else {
+                    unreachable!()
+                }
+            },
+            prev_value,
+        );
+    }
 }
 
 pub fn button() -> LGtkWidget<gtk::Button, (), ()> {
@@ -400,9 +414,9 @@ mod widgets {
 }
 
 pub mod properties {
-    use super::{
-        Element, LGtkWidget, LGtkWidgetState, LeptosGtk, Property, WidgetClass,
-    };
+    #![allow(dead_code)]
+
+    use super::{Element, LGtkWidget, LeptosGtk, Property, WidgetClass};
     use gtk::glib::{object::ObjectExt, Value};
     use leptos::tachys::{renderer::Renderer, view::Render};
     use next_tuple::NextTuple;
@@ -425,7 +439,9 @@ pub mod properties {
             element.0.connect(self.signal_name, false, self.callback);
         }
 
-        fn rebuild(self, element: &Element, state: &mut Self::State) {}
+        fn rebuild(self, _element: &Element, _state: &mut Self::State) {
+            // TODO we want to *remove* the previous listener, and reconnect with this new one
+        }
     }
 
     /* examples for macro */
@@ -528,7 +544,7 @@ pub mod properties {
     }
 
     /* end examples for properties macro */
-
+    #[derive(Debug)]
     pub struct Label {
         value: String,
     }
@@ -554,7 +570,9 @@ pub mod properties {
         }
 
         fn rebuild(self, element: &Element, state: &mut Self::State) {
-            todo!()
+            if self.value != state.value {
+                LeptosGtk::set_attribute(element, "label", &self.value);
+            }
         }
     }
 

examples/hackernews_islands_axum/Cargo.toml

@@ -31,7 +31,6 @@ tokio = { version = "1.39", features = ["full"], optional = true }
 http = { version = "1.1", optional = true }
 web-sys = { version = "0.3.70", features = ["AbortController", "AbortSignal"] }
 wasm-bindgen = "0.2.93"
-lazy_static = "1.5"
 rust-embed = { version = "8.5", features = [
   "axum",
   "mime_guess",

examples/js-framework-benchmark/src/lib.rs

@@ -162,22 +162,24 @@ pub fn App() -> impl IntoView {
             <table class="table table-hover table-striped test-data">
                 <tbody>
                     <For
-                        each={move || data.get()}
-                        key={|row| row.id}
+                        each=move || data.get()
+                        key=|row| row.id
                         children=move |row: RowData| {
                             let row_id = row.id;
                             let label = row.label;
                             let is_selected = is_selected.clone();
-                            ViewTemplate::new(view! {
-                                <tr class:danger={move || is_selected.selected(Some(row_id))}>
-                                    <td class="col-md-1">{row_id.to_string()}</td>
-                                    <td class="col-md-4"><a on:click=move |_| set_selected.set(Some(row_id))>{move || label.get()}</a></td>
-                                    <td class="col-md-1"><a on:click=move |_| remove(row_id)><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></a></td>
-                                    <td class="col-md-6"/>
-                                </tr>
-                            })
+                            template! {
+                                < tr class : danger = { move || is_selected.selected(Some(row_id)) }
+                                > < td class = "col-md-1" > { row_id.to_string() } </ td > < td
+                                class = "col-md-4" >< a on : click = move | _ | set_selected
+                                .set(Some(row_id)) > { move || label.get() } </ a ></ td > < td
+                                class = "col-md-1" >< a on : click = move | _ | remove(row_id) ><
+                                span class = "glyphicon glyphicon-remove" aria - hidden = "true" ></
+                                span ></ a ></ td > < td class = "col-md-6" /> </ tr >
+                            }
                         }
                     />
+
                 </tbody>
             </table>
             <span class="preloadicon glyphicon glyphicon-remove" aria-hidden="true"></span>

examples/server_fns_axum/Cargo.toml

@@ -16,6 +16,7 @@ server_fn = { path = "../../server_fn", features = [
   "serde-lite",
   "rkyv",
   "multipart",
+  "postcard",
 ] }
 log = "0.4.22"
 simple_logger = "5.0"

examples/server_fns_axum/src/app.rs

@@ -6,7 +6,8 @@ use server_fn::{
     client::{browser::BrowserClient, Client},
     codec::{
         Encoding, FromReq, FromRes, GetUrl, IntoReq, IntoRes, MultipartData,
-        MultipartFormData, Rkyv, SerdeLite, StreamingText, TextStream,
+        MultipartFormData, Postcard, Rkyv, SerdeLite, StreamingText,
+        TextStream,
     },
     request::{browser::BrowserRequest, ClientReq, Req},
     response::{browser::BrowserResponse, ClientRes, Res},
@@ -65,6 +66,7 @@ pub fn HomePage() -> impl IntoView {
         <h2>"Alternative Encodings"</h2>
         <ServerFnArgumentExample/>
         <RkyvExample/>
+        <PostcardExample/>
         <FileUpload/>
         <FileUploadWithProgress/>
         <FileWatcher/>
@@ -880,3 +882,67 @@ pub fn CustomClientExample() -> impl IntoView {
         })>Click me</button>
     }
 }
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct PostcardData {
+    name: String,
+    age: u32,
+    hobbies: Vec<String>,
+}
+
+/// This server function uses Postcard for both input and output encoding.
+/// Postcard provides efficient binary serialization, almost as fast as rkyv, while also being
+/// serde compatible
+#[server(input = Postcard, output = Postcard)]
+pub async fn postcard_example(
+    data: PostcardData,
+) -> Result<PostcardData, ServerFnError> {
+    // Simulate some processing time
+    tokio::time::sleep(std::time::Duration::from_millis(250)).await;
+
+    // Modify the data to demonstrate server-side changes
+    let mut modified_data = data.clone();
+    modified_data.age += 1;
+    modified_data.hobbies.push("Rust programming".to_string());
+
+    Ok(modified_data)
+}
+
+/// This component demonstrates the usage of Postcard encoding with server functions.
+/// It allows incrementing the age of a person and shows how the data is
+/// serialized, sent to the server, processed, and returned.
+#[component]
+pub fn PostcardExample() -> impl IntoView {
+    // Initialize the input data
+    let (input, set_input) = signal(PostcardData {
+        name: "Alice".to_string(),
+        age: 30,
+        hobbies: vec!["reading".to_string(), "hiking".to_string()],
+    });
+
+    // Create a resource that will call the server function whenever the input changes
+    let postcard_result = Resource::new(
+        move || input.get(),
+        |data| async move { postcard_example(data).await },
+    );
+
+    view! {
+        <h3>Using <code>postcard</code> encoding</h3>
+        <p>"This example demonstrates using Postcard for efficient binary serialization."</p>
+        <button on:click=move |_| {
+            // Update the input data when the button is clicked
+            set_input.update(|data| {
+                data.age += 1;
+            });
+        }>
+            "Increment Age"
+        </button>
+        // Display the current input data
+        <p>"Input: " {move || format!("{:?}", input.get())}</p>
+        <Transition>
+            // Display the result from the server, which will update automatically
+            // when the input changes due to the resource
+            <p>"Result: " {move || postcard_result.get().map(|r| format!("{:?}", r))}</p>
+        </Transition>
+    }
+}

examples/ssr_modes/Cargo.toml

@@ -2,6 +2,8 @@
 name = "ssr_modes"
 version = "0.1.0"
 edition = "2021"
+# std::sync::LazyLock is stabilized in Rust version 1.80.0
+rust-version = "1.80.0"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
@@ -11,7 +13,6 @@ actix-files = { version = "0.6.6", optional = true }
 actix-web = { version = "4.8", optional = true, features = ["macros"] }
 console_error_panic_hook = "0.1.7"
 console_log = "1.0"
-lazy_static = "1.5"
 leptos = { path = "../../leptos" }
 leptos_meta = { path = "../../meta" }
 leptos_actix = { path = "../../integrations/actix", optional = true }
@@ -38,12 +39,12 @@ denylist = ["actix-files", "actix-web", "leptos_actix"]
 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   
+# The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name
 output-name = "ssr_modes"
 # 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	
+# 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/main.scss"

examples/ssr_modes/src/app.rs

@@ -1,4 +1,5 @@
-use lazy_static::lazy_static;
+use std::sync::LazyLock;
+
 use leptos::prelude::*;
 use leptos_meta::*;
 use leptos_router::{
@@ -146,8 +147,9 @@ fn Post() -> impl IntoView {
 }
 
 // Dummy API
-lazy_static! {
-    static ref POSTS: Vec<Post> = vec![
+
+static POSTS: LazyLock<[Post; 3]> = LazyLock::new(|| {
+    [
         Post {
             id: 0,
             title: "My first post".to_string(),
@@ -163,8 +165,8 @@ lazy_static! {
             title: "My third post".to_string(),
             content: "This is my third post".to_string(),
         },
-    ];
-}
+    ]
+});
 
 #[derive(Error, Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum PostError {

examples/ssr_modes_axum/Cargo.toml

@@ -2,6 +2,8 @@
 name = "ssr_modes_axum"
 version = "0.1.0"
 edition = "2021"
+# std::sync::LazyLock is stabilized in Rust version 1.80.0
+rust-version = "1.80.0"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
@@ -9,7 +11,6 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 console_error_panic_hook = "0.1.7"
 console_log = "1.0"
-lazy_static = "1.5"
 leptos = { path = "../../leptos", features = [
   "hydration",
 ] } #"nightly", "hydration"] }

examples/ssr_modes_axum/src/app.rs

@@ -1,4 +1,5 @@
-use lazy_static::lazy_static;
+use std::sync::LazyLock;
+
 use leptos::prelude::*;
 use leptos_meta::MetaTags;
 use leptos_meta::*;
@@ -261,8 +262,9 @@ pub fn Admin() -> impl IntoView {
 }
 
 // Dummy API
-lazy_static! {
-    static ref POSTS: Vec<Post> = vec![
+
+static POSTS: LazyLock<[Post; 3]> = LazyLock::new(|| {
+    [
         Post {
             id: 0,
             title: "My first post".to_string(),
@@ -278,8 +280,8 @@ lazy_static! {
             title: "My third post".to_string(),
             content: "This is my third post".to_string(),
         },
-    ];
-}
+    ]
+});
 
 #[derive(Error, Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum PostError {

examples/static_routing/.gitignore

@@ -0,0 +1,13 @@
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+pkg
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# node e2e test tools and outputs
+node_modules/
+test-results/
+end2end/playwright-report/
+playwright/.cache/

examples/static_routing/Cargo.toml

@@ -0,0 +1,115 @@
+[package]
+name = "static_routing"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+console_error_panic_hook = "0.1.7"
+console_log = "1.0"
+leptos = { path = "../../leptos", features = [
+  "hydration",
+] } #"nightly", "hydration"] }
+leptos_meta = { path = "../../meta" }
+leptos_axum = { path = "../../integrations/axum", optional = true }
+leptos_router = { path = "../../router" }
+log = "0.4.22"
+serde = { version = "1.0", features = ["derive"] }
+thiserror = "1.0"
+axum = { version = "0.7.5", optional = true }
+tower = { version = "0.4.13", optional = true }
+tower-http = { version = "0.5.2", features = ["fs"], optional = true }
+tokio = { version = "1.39", features = [
+  "fs",
+  "rt-multi-thread",
+  "macros",
+], optional = true }
+tokio-stream = { version = "0.1", features = ["fs"], optional = true }
+futures = "0.3"
+wasm-bindgen = "0.2.93"
+notify = { version = "6", optional = true }
+http = { version = "1", optional = true }
+
+[features]
+hydrate = ["leptos/hydrate"]
+ssr = [
+  "dep:axum",
+  "dep:tower",
+  "dep:tower-http",
+  "dep:tokio",
+  "dep:tokio-stream",
+  "leptos/ssr",
+  "leptos_meta/ssr",
+  "dep:leptos_axum",
+  "leptos_router/ssr",
+  "dep:notify",
+  "dep:http"
+]
+
+[profile.release]
+panic = "abort"
+
+[profile.wasm-release]
+inherits = "release"
+opt-level = 'z'
+lto = true
+codegen-units = 1
+panic = "abort"
+
+[package.metadata.cargo-all-features]
+denylist = ["axum", "tower", "tower-http", "tokio", "sqlx", "leptos_axum"]
+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 = "ssr_modes"
+# 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/main.scss"
+# Assets source dir. All files found here will be copied and synchronized to site-root.
+# The assets-dir cannot have a sub directory with the same name/path as site-pkg-dir.
+#
+# Optional. Env: LEPTOS_ASSETS_DIR.
+assets-dir = "assets"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-addr = "127.0.0.1:3007"
+# 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.
+#   [Windows] for non-WSL use "npx.cmd playwright test"
+#   This binary name can be checked in Powershell with Get-Command npx
+end2end-cmd = "npx playwright test"
+end2end-dir = "end2end"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults"
+# Set by cargo-leptos watch when building with that 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
+
+lib-profile-release = "wasm-release"

examples/static_routing/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 henrik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

examples/static_routing/Makefile.toml

@@ -0,0 +1,8 @@
+extend = [
+    { path = "../cargo-make/main.toml" },
+    { path = "../cargo-make/cargo-leptos.toml" },
+]
+
+[env]
+
+CLIENT_PROCESS_NAME = "ssr_modes_axum"

examples/static_routing/README.md

@@ -0,0 +1,11 @@
+# Static Routing Example
+
+This example shows the static routing features, which can be used to generate the HTML content for some routes before a request.
+
+## Getting Started
+
+See the [Examples README](../README.md) for setup and run instructions.
+
+## Quick Start
+
+Run `cargo leptos watch` to run this example.

examples/static_routing/posts/post1.md

@@ -0,0 +1,3 @@
+# My first blog post
+
+Having a blog is *fun*.

examples/static_routing/posts/post2.md

@@ -0,0 +1,3 @@
+# My second blog post
+
+Coming up with content is hard.

examples/static_routing/posts/post3.md

@@ -0,0 +1,3 @@
+# My third blog post
+
+Could I just have AI write this for me instead?

examples/static_routing/posts/post4.md

@@ -0,0 +1,3 @@
+# My fourth post
+
+Here is some content. It should regenerate the static page.

examples/static_routing/rust-toolchain.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "stable" # test change

examples/static_routing/src/app.rs

@@ -0,0 +1,323 @@
+use std::path::Path;
+
+use futures::{channel::mpsc, Stream};
+use leptos::prelude::*;
+use leptos_meta::MetaTags;
+use leptos_meta::*;
+use leptos_router::{
+    components::{FlatRoutes, Redirect, Route, Router},
+    hooks::use_params,
+    params::Params,
+    path,
+    static_routes::StaticRoute,
+    SsrMode,
+};
+use serde::{Deserialize, Serialize};
+use thiserror::Error;
+
+pub fn shell(options: LeptosOptions) -> impl IntoView {
+    view! {
+        <!DOCTYPE html>
+        <html lang="en">
+            <head>
+                <meta charset="utf-8"/>
+                <meta name="viewport" content="width=device-width, initial-scale=1"/>
+                <AutoReload options=options.clone()/>
+                <HydrationScripts options/>
+                <MetaTags/>
+            </head>
+            <body>
+                <App/>
+            </body>
+        </html>
+    }
+}
+
+#[component]
+pub fn App() -> impl IntoView {
+    // Provides context that manages stylesheets, titles, meta tags, etc.
+    provide_meta_context();
+    let fallback = || view! { "Page not found." }.into_view();
+
+    view! {
+        <Stylesheet id="leptos" href="/pkg/ssr_modes.css"/>
+        <Title text="Welcome to Leptos"/>
+        <Meta name="color-scheme" content="dark light"/>
+        <Router>
+            <nav>
+                <a href="/">"Home"</a>
+            </nav>
+            <main>
+                <FlatRoutes fallback>
+                    <Route
+                        path=path!("/")
+                        view=HomePage
+                        ssr=SsrMode::Static(
+                            StaticRoute::new().regenerate(|_| watch_path(Path::new("./posts"))),
+                        )
+                    />
+
+                    <Route
+                        path=path!("/about")
+                        view=move || view! { <Redirect path="/"/> }
+                        ssr=SsrMode::Static(StaticRoute::new())
+                    />
+
+                    <Route
+                        path=path!("/post/:slug/")
+                        view=Post
+                        ssr=SsrMode::Static(
+                            StaticRoute::new()
+                                .prerender_params(|| async move {
+                                    [("slug".into(), list_slugs().await.unwrap_or_default())]
+                                        .into_iter()
+                                        .collect()
+                                })
+                                .regenerate(|params| {
+                                    let slug = params.get("slug").unwrap();
+                                    watch_path(Path::new(&format!("./posts/{slug}.md")))
+                                }),
+                        )
+                    />
+
+                </FlatRoutes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+fn HomePage() -> impl IntoView {
+    // load the posts
+    let posts = Resource::new(|| (), |_| list_posts());
+    let posts = move || {
+        posts
+            .get()
+            .map(|n| n.unwrap_or_default())
+            .unwrap_or_default()
+    };
+
+    view! {
+        <h1>"My Great Blog"</h1>
+        <Suspense fallback=move || view! { <p>"Loading posts..."</p> }>
+            <ul>
+                <For each=posts key=|post| post.slug.clone() let:post>
+                    <li>
+                        <a href=format!("/post/{}/", post.slug)>{post.title.clone()}</a>
+                    </li>
+                </For>
+            </ul>
+        </Suspense>
+    }
+}
+
+#[derive(Params, Clone, Debug, PartialEq, Eq)]
+pub struct PostParams {
+    slug: Option<String>,
+}
+
+#[component]
+fn Post() -> impl IntoView {
+    let query = use_params::<PostParams>();
+    let slug = move || {
+        query
+            .get()
+            .map(|q| q.slug.unwrap_or_default())
+            .map_err(|_| PostError::InvalidId)
+    };
+    let post_resource = Resource::new_blocking(slug, |slug| async move {
+        match slug {
+            Err(e) => Err(e),
+            Ok(slug) => get_post(slug)
+                .await
+                .map(|data| data.ok_or(PostError::PostNotFound))
+                .map_err(|e| PostError::ServerError(e.to_string())),
+        }
+    });
+
+    let post_view = move || {
+        Suspend::new(async move {
+            match post_resource.await {
+                Ok(Ok(post)) => {
+                    Ok(view! {
+                        <h1>{post.title.clone()}</h1>
+                        <p>{post.content.clone()}</p>
+
+                        // since we're using async rendering for this page,
+                        // this metadata should be included in the actual HTML <head>
+                        // when it's first served
+                        <Title text=post.title/>
+                        <Meta name="description" content=post.content/>
+                    })
+                }
+                Ok(Err(e)) | Err(e) => {
+                    Err(PostError::ServerError(e.to_string()))
+                }
+            }
+        })
+    };
+
+    view! {
+        <em>"The world's best content."</em>
+        <Suspense fallback=move || view! { <p>"Loading post..."</p> }>
+            <ErrorBoundary fallback=|errors| {
+                #[cfg(feature = "ssr")]
+                expect_context::<leptos_axum::ResponseOptions>()
+                    .set_status(http::StatusCode::NOT_FOUND);
+                view! {
+                    <div class="error">
+                        <h1>"Something went wrong."</h1>
+                        <ul>
+                            {move || {
+                                errors
+                                    .get()
+                                    .into_iter()
+                                    .map(|(_, error)| view! { <li>{error.to_string()}</li> })
+                                    .collect::<Vec<_>>()
+                            }}
+
+                        </ul>
+                    </div>
+                }
+            }>{post_view}</ErrorBoundary>
+        </Suspense>
+    }
+}
+
+#[derive(Error, Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum PostError {
+    #[error("Invalid post ID.")]
+    InvalidId,
+    #[error("Post not found.")]
+    PostNotFound,
+    #[error("Server error: {0}.")]
+    ServerError(String),
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Post {
+    slug: String,
+    title: String,
+    content: String,
+}
+
+#[server]
+pub async fn list_slugs() -> Result<Vec<String>, ServerFnError> {
+    use tokio::fs;
+    use tokio_stream::wrappers::ReadDirStream;
+    use tokio_stream::StreamExt;
+
+    let files = ReadDirStream::new(fs::read_dir("./posts").await?);
+    Ok(files
+        .filter_map(|entry| {
+            let entry = entry.ok()?;
+            let path = entry.path();
+            if !path.is_file() {
+                return None;
+            }
+            let extension = path.extension()?;
+            if extension != "md" {
+                return None;
+            }
+
+            let slug = path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or_default()
+                .replace(".md", "");
+            Some(slug)
+        })
+        .collect()
+        .await)
+}
+
+#[server]
+pub async fn list_posts() -> Result<Vec<Post>, ServerFnError> {
+    println!("calling list_posts");
+
+    use futures::TryStreamExt;
+    use tokio::fs;
+    use tokio_stream::wrappers::ReadDirStream;
+
+    let files = ReadDirStream::new(fs::read_dir("./posts").await?);
+    files
+        .try_filter_map(|entry| async move {
+            let path = entry.path();
+            if !path.is_file() {
+                return Ok(None);
+            }
+            let Some(extension) = path.extension() else {
+                return Ok(None);
+            };
+            if extension != "md" {
+                return Ok(None);
+            }
+
+            let slug = path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or_default()
+                .replace(".md", "");
+            let content = fs::read_to_string(path).await?;
+            // world's worst Markdown frontmatter parser
+            let title = content.lines().next().unwrap().replace("# ", "");
+
+            Ok(Some(Post {
+                slug,
+                title,
+                content,
+            }))
+        })
+        .try_collect()
+        .await
+        .map_err(ServerFnError::from)
+}
+
+#[server]
+pub async fn get_post(slug: String) -> Result<Option<Post>, ServerFnError> {
+    println!("reading ./posts/{slug}.md");
+    let content =
+        tokio::fs::read_to_string(&format!("./posts/{slug}.md")).await?;
+    // world's worst Markdown frontmatter parser
+    let title = content.lines().next().unwrap().replace("# ", "");
+
+    Ok(Some(Post {
+        slug,
+        title,
+        content,
+    }))
+}
+
+#[allow(unused)] // path is not used in non-SSR
+fn watch_path(path: &Path) -> impl Stream<Item = ()> {
+    #[allow(unused)]
+    let (mut tx, rx) = mpsc::channel(0);
+
+    #[cfg(feature = "ssr")]
+    {
+        use notify::RecursiveMode;
+        use notify::Watcher;
+
+        let mut watcher =
+            notify::recommended_watcher(move |res: Result<_, _>| {
+                if res.is_ok() {
+                    // if this fails, it's because the buffer is full
+                    // this means we've already notified before it's regenerated,
+                    // so this page will be queued for regeneration already
+                    _ = tx.try_send(());
+                }
+            })
+            .expect("could not create watcher");
+
+        // Add a path to be watched. All files and directories at that path and
+        // below will be monitored for changes.
+        watcher
+            .watch(path, RecursiveMode::NonRecursive)
+            .expect("could not watch path");
+
+        // we want this to run as long as the server is alive
+        std::mem::forget(watcher);
+    }
+
+    rx
+}

examples/static_routing/src/lib.rs

@@ -0,0 +1,9 @@
+pub mod app;
+
+#[cfg(feature = "hydrate")]
+#[wasm_bindgen::prelude::wasm_bindgen]
+pub fn hydrate() {
+    use app::*;
+    console_error_panic_hook::set_once();
+    leptos::mount::hydrate_body(App);
+}

examples/static_routing/src/main.rs

@@ -0,0 +1,42 @@
+#[cfg(feature = "ssr")]
+#[tokio::main]
+async fn main() {
+    use axum::Router;
+    use leptos::prelude::*;
+    use leptos_axum::{generate_route_list_with_ssg, LeptosRoutes};
+    use static_routing::app::*;
+
+    let conf = get_configuration(None).unwrap();
+    let addr = conf.leptos_options.site_addr;
+    let leptos_options = conf.leptos_options;
+    // Generate the list of routes in your Leptos App
+    let (routes, static_routes) = generate_route_list_with_ssg({
+        let leptos_options = leptos_options.clone();
+        move || shell(leptos_options.clone())
+    });
+
+    static_routes.generate(&leptos_options).await;
+
+    let app = Router::new()
+        .leptos_routes(&leptos_options, routes, {
+            let leptos_options = leptos_options.clone();
+            move || shell(leptos_options.clone())
+        })
+        .fallback(leptos_axum::file_and_error_handler(shell))
+        .with_state(leptos_options);
+
+    // run our app with hyper
+    // `axum::Server` is a re-export of `hyper::Server`
+    log!("listening on http://{}", &addr);
+    let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
+    axum::serve(listener, app.into_make_service())
+        .await
+        .unwrap();
+}
+
+#[cfg(not(feature = "ssr"))]
+pub fn main() {
+    // no client-side main function
+    // unless we want this to work with e.g., Trunk for pure client-side testing
+    // see lib.rs for hydration function instead
+}

examples/static_routing/style/main.scss

@@ -0,0 +1,3 @@
+body {
+	font-family: sans-serif;
+}

examples/stores/Cargo.toml

@@ -13,6 +13,9 @@ leptos = { path = "../../leptos", features = ["csr"] }
 reactive_stores = { path = "../../reactive_stores" }
 reactive_stores_macro = { path = "../../reactive_stores_macro" }
 console_error_panic_hook = "0.1.7"
+chrono = { version = "0.4.38", features = ["serde"] }
+serde = { version = "1.0.210", features = ["derive"] }
+serde_json = "1.0.128"
 
 [dev-dependencies]
 wasm-bindgen = "0.2.93"

examples/stores/index.html

@@ -3,6 +3,11 @@
 	<head>
 		<link data-trunk rel="rust" data-wasm-opt="z"/>
 		<link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico"/>
+		<style>
+		.hidden {
+			display: none;
+		}
+		</style>
 	</head>
 	<body></body>
-</html>
+</html>

examples/stores/src/lib.rs

@@ -1,43 +1,88 @@
-use leptos::prelude::*;
-use reactive_stores::{Field, Store, StoreFieldIterator};
-use reactive_stores_macro::Store;
+use std::sync::atomic::{AtomicUsize, Ordering};
 
-#[derive(Debug, Store)]
+use chrono::{Local, NaiveDate};
+use leptos::prelude::*;
+use reactive_stores::{Field, Patch, Store};
+use reactive_stores_macro::{Patch, Store};
+use serde::{Deserialize, Serialize};
+
+// ID starts higher than 0 because we have a few starting todos by default
+static NEXT_ID: AtomicUsize = AtomicUsize::new(3);
+
+#[derive(Debug, Store, Serialize, Deserialize)]
 struct Todos {
-    user: String,
+    user: User,
+    #[store(key: usize = |todo| todo.id)]
     todos: Vec<Todo>,
 }
 
-#[derive(Debug, Store)]
+#[derive(Debug, Store, Patch, Serialize, Deserialize)]
+struct User {
+    name: String,
+    email: String,
+}
+
+#[derive(Debug, Store, Serialize, Deserialize)]
 struct Todo {
+    id: usize,
     label: String,
-    completed: bool,
+    status: Status,
+}
+
+#[derive(Debug, Default, Clone, Store, Serialize, Deserialize)]
+enum Status {
+    #[default]
+    Pending,
+    Scheduled,
+    ScheduledFor {
+        date: NaiveDate,
+    },
+    Done,
+}
+
+impl Status {
+    pub fn next_step(&mut self) {
+        *self = match self {
+            Status::Pending => Status::ScheduledFor {
+                date: Local::now().naive_local().into(),
+            },
+            Status::Scheduled | Status::ScheduledFor { .. } => Status::Done,
+            Status::Done => Status::Done,
+        };
+    }
 }
 
 impl Todo {
     pub fn new(label: impl ToString) -> Self {
         Self {
+            id: NEXT_ID.fetch_add(1, Ordering::Relaxed),
             label: label.to_string(),
-            completed: false,
+            status: Status::Pending,
         }
     }
 }
 
 fn data() -> Todos {
     Todos {
-        user: "Bob".to_string(),
+        user: User {
+            name: "Bob".to_string(),
+            email: "lawblog@bobloblaw.com".into(),
+        },
         todos: vec![
             Todo {
+                id: 0,
                 label: "Create reactive store".to_string(),
-                completed: true,
+                status: Status::Pending,
             },
             Todo {
+                id: 1,
                 label: "???".to_string(),
-                completed: false,
+                status: Status::Pending,
             },
             Todo {
+                id: 2,
                 label: "Profit".to_string(),
-                completed: false,
+                status: Status::Pending,
             },
         ],
     }
@@ -49,17 +94,10 @@ pub fn App() -> impl IntoView {
 
     let input_ref = NodeRef::new();
 
-    let rows = move || {
-        store
-            .todos()
-            .iter()
-            .enumerate()
-            .map(|(idx, todo)| view! { <TodoRow store idx todo/> })
-            .collect_view()
-    };
-
     view! {
-        <p>"Hello, " {move || store.user().get()}</p>
+        <p>"Hello, " {move || store.user().name().get()}</p>
+        <UserForm user=store.user()/>
+        <hr/>
         <form on:submit=move |ev| {
             ev.prevent_default();
             store.todos().write().push(Todo::new(input_ref.get().unwrap().value()));
@@ -67,30 +105,69 @@ pub fn App() -> impl IntoView {
             <label>"Add a Todo" <input type="text" node_ref=input_ref/></label>
             <input type="submit"/>
         </form>
-        <ol>{rows}</ol>
-        <div style="display: flex"></div>
+        <ol>
+            // because `todos` is a keyed field, `store.todos()` returns a struct that
+            // directly implements IntoIterator, so we can use it in <For/> and
+            // it will manage reactivity for the store fields correctly
+            <For
+                each=move || {
+                    leptos::logging::log!("RERUNNING FOR CALCULATION");
+                    store.todos()
+                }
+
+                key=|row| row.id().get()
+                let:todo
+            >
+                <TodoRow store todo/>
+            </For>
+
+        </ol>
+        <pre>{move || serde_json::to_string_pretty(&*store.read())}</pre>
+    }
+}
+
+#[component]
+fn UserForm(#[prop(into)] user: Field<User>) -> impl IntoView {
+    let error = RwSignal::new(None);
+
+    view! {
+        {move || error.get().map(|n| view! { <p>{n}</p> })}
+        <form on:submit:target=move |ev| {
+            ev.prevent_default();
+            match User::from_event(&ev) {
+                Ok(new_user) => {
+                    error.set(None);
+                    user.patch(new_user);
+                }
+                Err(e) => error.set(Some(e.to_string())),
+            }
+        }>
+            <label>
+                "Name" <input type="text" name="name" prop:value=move || user.name().get()/>
+            </label>
+            <label>
+                "Email" <input type="email" name="email" prop:value=move || user.email().get()/>
+            </label>
+            <input type="submit"/>
+        </form>
     }
 }
 
 #[component]
 fn TodoRow(
     store: Store<Todos>,
-    idx: usize,
     #[prop(into)] todo: Field<Todo>,
 ) -> impl IntoView {
-    let completed = todo.completed();
+    let status = todo.status();
     let title = todo.label();
 
-    let editing = RwSignal::new(false);
+    let editing = RwSignal::new(true);
 
     view! {
-        <li
-            style:text-decoration=move || {
-                completed.get().then_some("line-through").unwrap_or_default()
-            }
+        <li style:text-decoration=move || {
+            status.done().then_some("line-through").unwrap_or_default()
+        }>
 
-            class:foo=move || completed.get()
-        >
             <p
                 class:hidden=move || editing.get()
                 on:click=move |_| {
@@ -106,25 +183,48 @@ fn TodoRow(
                 prop:value=move || title.get()
                 on:change=move |ev| {
                     title.set(event_target_value(&ev));
-                    editing.set(false);
                 }
-
-                on:blur=move |_| editing.set(false)
-                autofocus
-            />
-            <input
-                type="checkbox"
-                prop:checked=move || completed.get()
-                on:click=move |_| { completed.update(|n| *n = !*n) }
             />
 
             <button on:click=move |_| {
-                store
-                    .todos()
-                    .update(|todos| {
-                        todos.remove(idx);
-                    });
+                status.write().next_step()
+            }>
+                {move || {
+                    if todo.status().done() {
+                        "Done"
+                    } else if status.scheduled() || status.scheduled_for() {
+                        "Scheduled"
+                    } else {
+                        "Pending"
+                    }
+                }}
+
+            </button>
+
+            <button on:click=move |_| {
+                let id = todo.id().get();
+                store.todos().write().retain(|todo| todo.id != id);
             }>"X"</button>
+            <input
+                type="date"
+                prop:value=move || {
+                    todo.status().scheduled_for_date().map(|n| n.get().to_string())
+                }
+
+                class:hidden=move || !todo.status().scheduled_for()
+                on:change:target=move |ev| {
+                    if let Some(date) = todo.status().scheduled_for_date() {
+                        let value = ev.target().value();
+                        match NaiveDate::parse_from_str(&value, "%Y-%m-%d") {
+                            Ok(new_date) => {
+                                date.set(new_date);
+                            }
+                            Err(e) => warn!("{e}"),
+                        }
+                    }
+                }
+            />
+
         </li>
     }
 }

examples/suspense_tests/src/app.rs

@@ -147,14 +147,13 @@ fn Nested() -> impl IntoView {
                 "Loading 1..."
             }>
                 {move || {
-                    one_second.get().map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
+                    one_second.map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
                 }}
                 <Suspense fallback=|| {
                     "Loading 2..."
                 }>
                     {move || {
                         two_second
-                            .get()
                             .map(|_| {
                                 view! {
                                     <p id="loaded-2">"Two Second: Loaded 2!"</p>
@@ -217,7 +216,6 @@ fn Parallel() -> impl IntoView {
             }>
                 {move || {
                     one_second
-                        .get()
                         .map(move |_| {
                             view! {
                                 <p id="loaded-1">"One Second: Loaded 1!"</p>
@@ -234,7 +232,6 @@ fn Parallel() -> impl IntoView {
             }>
                 {move || {
                     two_second
-                        .get()
                         .map(move |_| {
                             view! {
                                 <p id="loaded-2">"Two Second: Loaded 2!"</p>
@@ -264,7 +261,7 @@ fn Single() -> impl IntoView {
                 "Loading 1..."
             }>
                 {move || {
-                    one_second.get().map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
+                    one_second.map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
                 }}
 
             </Suspense>
@@ -300,7 +297,7 @@ fn InsideComponentChild() -> impl IntoView {
             "Loading 1..."
         }>
             {move || {
-                one_second.get().map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
+                one_second.map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
             }}
 
         </Suspense>
@@ -319,7 +316,7 @@ fn LocalResource() -> impl IntoView {
                 "Loading 1..."
             }>
                 {move || {
-                    one_second.get().map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
+                    one_second.map(|_| view! { <p id="loaded-1">"One Second: Loaded 1!"</p> })
                 }}
                 {move || {
                     Suspend::new(async move {

hydration_context/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "hydration_context"
-version = "0.2.0-beta2"
+version = "0.2.0-beta6"
 authors = ["Greg Johnston"]
 license = "MIT"
 readme = "../README.md"

hydration_context/src/ssr.rs

@@ -27,6 +27,7 @@ type SealedErrors = Arc<RwLock<HashSet<SerializedDataId>>>;
 /// The shared context that should be used on the server side.
 pub struct SsrSharedContext {
     id: AtomicUsize,
+    non_hydration_id: AtomicUsize,
     is_hydrating: AtomicBool,
     sync_buf: RwLock<Vec<ResolvedData>>,
     async_buf: AsyncDataBuf,
@@ -41,6 +42,7 @@ impl SsrSharedContext {
     pub fn new() -> Self {
         Self {
             is_hydrating: AtomicBool::new(true),
+            non_hydration_id: AtomicUsize::new(usize::MAX),
             ..Default::default()
         }
     }
@@ -52,6 +54,7 @@ impl SsrSharedContext {
     pub fn new_islands() -> Self {
         Self {
             is_hydrating: AtomicBool::new(false),
+            non_hydration_id: AtomicUsize::new(usize::MAX),
             ..Default::default()
         }
     }
@@ -73,8 +76,13 @@ impl SharedContext for SsrSharedContext {
         false
     }
 
+    #[track_caller]
     fn next_id(&self) -> SerializedDataId {
-        let id = self.id.fetch_add(1, Ordering::Relaxed);
+        let id = if self.get_is_hydrating() {
+            self.id.fetch_add(1, Ordering::Relaxed)
+        } else {
+            self.non_hydration_id.fetch_sub(1, Ordering::Relaxed)
+        };
         SerializedDataId(id)
     }
 

integrations/actix/Cargo.toml

@@ -10,6 +10,7 @@ edition.workspace = true
 
 [dependencies]
 actix-http = "3.8"
+actix-files = "0.6"
 actix-web = "4.8"
 futures = "0.3.30"
 any_spawner = { workspace = true, features = ["tokio"] }
@@ -22,12 +23,18 @@ leptos_router = { workspace = true, features = ["ssr"] }
 server_fn = { workspace = true, features = ["actix"] }
 serde_json = "1.0"
 parking_lot = "0.12.3"
-tracing = "0.1.40"
+tracing = { version = "0.1", optional = true }
 tokio = { version = "1.39", features = ["rt", "fs"] }
 send_wrapper = "0.6.0"
+dashmap = "6"
+once_cell = "1"
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--generate-link-to-definition"]
 
 [features]
 islands-router = []
+tracing = ["dep:tracing"]
+
+[package.metadata.cargo-all-features]
+denylist = ["tracing"]

integrations/actix/src/lib.rs

@@ -6,30 +6,38 @@
 //! [`examples`](https://github.com/leptos-rs/leptos/tree/main/examples)
 //! directory in the Leptos repository.
 
+use actix_files::NamedFile;
 use actix_http::header::{HeaderName, HeaderValue, ACCEPT, LOCATION, REFERER};
 use actix_web::{
     body::BoxBody,
     dev::{ServiceFactory, ServiceRequest},
     http::header,
-    web::{Payload, ServiceConfig},
+    test,
+    web::{Data, Payload, ServiceConfig},
     *,
 };
+use dashmap::DashMap;
 use futures::{stream::once, Stream, StreamExt};
 use http::StatusCode;
 use hydration_context::SsrSharedContext;
 use leptos::{
+    config::LeptosOptions,
     context::{provide_context, use_context},
+    prelude::expect_context,
     reactive_graph::{computed::ScopedFuture, owner::Owner},
-    IntoView, *,
+    IntoView,
 };
 use leptos_integration_utils::{
     BoxedFnOnce, ExtendResponse, PinnedFuture, PinnedStream,
 };
 use leptos_meta::ServerMetaContext;
 use leptos_router::{
-    components::provide_server_redirect, location::RequestUrl, PathSegment,
-    RouteList, RouteListing, SsrMode, StaticDataMap, StaticMode, *,
+    components::provide_server_redirect,
+    location::RequestUrl,
+    static_routes::{RegenerationFn, ResolvedStaticPath},
+    Method, PathSegment, RouteList, RouteListing, SsrMode,
 };
+use once_cell::sync::Lazy;
 use parking_lot::RwLock;
 use send_wrapper::SendWrapper;
 use server_fn::{
@@ -37,7 +45,9 @@ use server_fn::{
 };
 use std::{
     fmt::{Debug, Display},
+    future::Future,
     ops::{Deref, DerefMut},
+    path::Path,
     sync::Arc,
 };
 
@@ -207,7 +217,10 @@ impl ExtendResponse for ActixResponse {
 /// without actually setting the status code. This means that the client will not follow the
 /// redirect, and can therefore return the value of the server function and then handle
 /// the redirect with client-side routing.
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn redirect(path: &str) {
     if let (Some(req), Some(res)) =
         (use_context::<Request>(), use_context::<ResponseOptions>())
@@ -239,10 +252,14 @@ pub fn redirect(path: &str) {
             );
         }
     } else {
-        tracing::warn!(
-            "Couldn't retrieve either Parts or ResponseOptions while trying \
-             to redirect()."
-        );
+        let msg = "Couldn't retrieve either Parts or ResponseOptions while \
+                   trying to redirect().";
+
+        #[cfg(feature = "tracing")]
+        tracing::warn!("{}", &msg);
+
+        #[cfg(not(feature = "tracing"))]
+        eprintln!("{}", &msg);
     }
 }
 
@@ -282,7 +299,10 @@ pub fn redirect(path: &str) {
 /// This function always provides context values including the following types:
 /// - [ResponseOptions]
 /// - [HttpRequest](actix_web::HttpRequest)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn handle_server_fns() -> Route {
     handle_server_fns_with_context(|| {})
 }
@@ -306,7 +326,10 @@ pub fn handle_server_fns() -> Route {
 /// This function always provides context values including the following types:
 /// - [ResponseOptions]
 /// - [HttpRequest](actix_web::HttpRequest)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn handle_server_fns_with_context(
     additional_context: impl Fn() + 'static + Clone + Send,
 ) -> Route {
@@ -438,7 +461,10 @@ pub fn handle_server_fns_with_context(
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_to_stream<IV>(
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
     method: Method,
@@ -505,7 +531,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_to_stream_in_order<IV>(
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
     method: Method,
@@ -567,7 +596,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_async<IV>(
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
     method: Method,
@@ -590,7 +622,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_to_stream_with_context<IV>(
     additional_context: impl Fn() + 'static + Clone + Send,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
@@ -624,7 +659,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_to_stream_with_context_and_replace_blocks<IV>(
     additional_context: impl Fn() + 'static + Clone + Send,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
@@ -655,7 +693,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_to_stream_in_order_with_context<IV>(
     additional_context: impl Fn() + 'static + Clone + Send,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
@@ -685,7 +726,10 @@ where
 /// - [HttpRequest](actix_web::HttpRequest)
 /// - [MetaContext](leptos_meta::MetaContext)
 /// - [RouterIntegrationContext](leptos_router::RouterIntegrationContext)
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 pub fn render_app_async_with_context<IV>(
     additional_context: impl Fn() + 'static + Clone + Send,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
@@ -694,17 +738,32 @@ pub fn render_app_async_with_context<IV>(
 where
     IV: IntoView + 'static,
 {
-    handle_response(method, additional_context, app_fn, |app, chunks| {
-        Box::pin(async move {
-            let app = app.to_html_stream_in_order().collect::<String>().await;
-            let chunks = chunks();
-            Box::pin(once(async move { app }).chain(chunks))
-                as PinnedStream<String>
-        })
+    handle_response(method, additional_context, app_fn, async_stream_builder)
+}
+
+fn async_stream_builder<IV>(
+    app: IV,
+    chunks: BoxedFnOnce<PinnedStream<String>>,
+) -> PinnedFuture<PinnedStream<String>>
+where
+    IV: IntoView + 'static,
+{
+    Box::pin(async move {
+        let app = if cfg!(feature = "islands-router") {
+            app.to_html_stream_in_order_branching()
+        } else {
+            app.to_html_stream_in_order()
+        };
+        let app = app.collect::<String>().await;
+        let chunks = chunks();
+        Box::pin(once(async move { app }).chain(chunks)) as PinnedStream<String>
     })
 }
 
-#[tracing::instrument(level = "trace", fields(error), skip_all)]
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(level = "trace", fields(error), skip_all)
+)]
 fn provide_contexts(
     req: Request,
     meta_context: &ServerMetaContext,
@@ -785,7 +844,7 @@ where
 /// create routes in Actix's App without having to use wildcard matching or fallbacks. Takes in your root app Element
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths.
 pub fn generate_route_list<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
 ) -> Vec<ActixRouteListing>
 where
     IV: IntoView + 'static,
@@ -797,8 +856,8 @@ where
 /// create routes in Actix's App without having to use wildcard matching or fallbacks. Takes in your root app Element
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths.
 pub fn generate_route_list_with_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -810,7 +869,7 @@ where
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths. Adding excluded_routes
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format
 pub fn generate_route_list_with_exclusions<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
 ) -> Vec<ActixRouteListing>
 where
@@ -824,9 +883,9 @@ where
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths. Adding excluded_routes
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format
 pub fn generate_route_list_with_exclusions_and_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -875,7 +934,7 @@ pub struct ActixRouteListing {
     path: String,
     mode: SsrMode,
     methods: Vec<leptos_router::Method>,
-    static_mode: Option<(StaticMode, StaticDataMap)>,
+    regenerate: Vec<RegenerationFn>,
 }
 
 impl From<RouteListing> for ActixRouteListing {
@@ -888,12 +947,12 @@ impl From<RouteListing> for ActixRouteListing {
         };
         let mode = value.mode();
         let methods = value.methods().collect();
-        let static_mode = value.into_static_parts();
+        let regenerate = value.regenerate().into();
         Self {
             path,
-            mode,
+            mode: mode.clone(),
             methods,
-            static_mode,
+            regenerate,
         }
     }
 }
@@ -904,13 +963,13 @@ impl ActixRouteListing {
         path: String,
         mode: SsrMode,
         methods: impl IntoIterator<Item = leptos_router::Method>,
-        static_mode: Option<(StaticMode, StaticDataMap)>,
+        regenerate: impl Into<Vec<RegenerationFn>>,
     ) -> Self {
         Self {
             path,
             mode,
             methods: methods.into_iter().collect(),
-            static_mode,
+            regenerate: regenerate.into(),
         }
     }
 
@@ -921,19 +980,13 @@ impl ActixRouteListing {
 
     /// The rendering mode for this path.
     pub fn mode(&self) -> SsrMode {
-        self.mode
+        self.mode.clone()
     }
 
     /// The HTTP request methods this path can handle.
     pub fn methods(&self) -> impl Iterator<Item = leptos_router::Method> + '_ {
         self.methods.iter().copied()
     }
-
-    /// Whether this route is statically rendered.
-    #[inline(always)]
-    pub fn static_mode(&self) -> Option<StaticMode> {
-        self.static_mode.as_ref().map(|n| n.0)
-    }
 }
 
 /// Generates a list of all routes defined in Leptos's Router in your app. We can then use this to automatically
@@ -942,10 +995,10 @@ impl ActixRouteListing {
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format.
 /// Additional context will be provided to the app Element.
 pub fn generate_route_list_with_exclusions_and_ssg_and_context<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
-    additional_context: impl Fn() + 'static + Clone,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+    additional_context: impl Fn() + 'static + Send + Clone,
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -964,6 +1017,12 @@ where
         })
         .unwrap_or_default();
 
+    let generator = StaticRouteGenerator::new(
+        &routes,
+        app_fn.clone(),
+        additional_context.clone(),
+    );
+
     // Axum's Router defines Root routes as "/" not ""
     let mut routes = routes
         .into_inner()
@@ -977,7 +1036,7 @@ where
                 "/".to_string(),
                 Default::default(),
                 [leptos_router::Method::Get],
-                None,
+                vec![],
             )]
         } else {
             // Routes to exclude from auto generation
@@ -987,192 +1046,251 @@ where
             }
             routes
         },
-        StaticDataMap::new(), // TODO
-                              //static_data_map,
+        generator,
     )
 }
 
+/// Allows generating any prerendered routes.
+#[allow(clippy::type_complexity)]
+pub struct StaticRouteGenerator(
+    Box<dyn FnOnce(&LeptosOptions) -> PinnedFuture<()> + Send>,
+);
+
+impl StaticRouteGenerator {
+    fn render_route<IV: IntoView + 'static>(
+        path: String,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> impl Future<Output = (Owner, String)> {
+        let (meta_context, meta_output) = ServerMetaContext::new();
+        let additional_context = {
+            let add_context = additional_context.clone();
+            move || {
+                let mock_req = test::TestRequest::with_uri(&path)
+                    .insert_header(("Accept", "text/html"))
+                    .to_http_request();
+                let res_options = ResponseOptions::default();
+                provide_contexts(
+                    Request::new(&mock_req),
+                    &meta_context,
+                    &res_options,
+                );
+                add_context();
+            }
+        };
+
+        let (owner, stream) = leptos_integration_utils::build_response(
+            app_fn.clone(),
+            additional_context,
+            async_stream_builder,
+        );
+
+        let sc = owner.shared_context().unwrap();
+
+        async move {
+            let stream = stream.await;
+            while let Some(pending) = sc.await_deferred() {
+                pending.await;
+            }
+
+            let html = meta_output
+                .inject_meta_context(stream)
+                .await
+                .collect::<String>()
+                .await;
+            (owner, html)
+        }
+    }
+
+    /// Creates a new static route generator from the given list of route definitions.
+    pub fn new<IV>(
+        routes: &RouteList,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> Self
+    where
+        IV: IntoView + 'static,
+    {
+        Self({
+            let routes = routes.clone();
+            Box::new(move |options| {
+                let options = options.clone();
+                let app_fn = app_fn.clone();
+                let additional_context = additional_context.clone();
+
+                Box::pin(routes.generate_static_files(
+                    move |path: &ResolvedStaticPath| {
+                        Self::render_route(
+                            path.to_string(),
+                            app_fn.clone(),
+                            additional_context.clone(),
+                        )
+                    },
+                    move |path: &ResolvedStaticPath,
+                          owner: &Owner,
+                          html: String| {
+                        let options = options.clone();
+                        let path = path.to_owned();
+                        let response_options = owner.with(use_context);
+                        async move {
+                            write_static_route(
+                                &options,
+                                response_options,
+                                path.as_ref(),
+                                &html,
+                            )
+                            .await
+                        }
+                    },
+                    was_404,
+                ))
+            })
+        })
+    }
+
+    /// Generates the routes.
+    pub async fn generate(self, options: &LeptosOptions) {
+        (self.0)(options).await
+    }
+}
+
+static STATIC_HEADERS: Lazy<DashMap<String, ResponseOptions>> =
+    Lazy::new(DashMap::new);
+
+fn was_404(owner: &Owner) -> bool {
+    let resp = owner.with(|| expect_context::<ResponseOptions>());
+    let status = resp.0.read().status;
+
+    if let Some(status) = status {
+        return status == StatusCode::NOT_FOUND;
+    }
+
+    false
+}
+
+fn static_path(options: &LeptosOptions, path: &str) -> String {
+    use leptos_integration_utils::static_file_path;
+
+    // If the path ends with a trailing slash, we generate the path
+    // as a directory with a index.html file inside.
+    if path != "/" && path.ends_with("/") {
+        static_file_path(options, &format!("{}index", path))
+    } else {
+        static_file_path(options, path)
+    }
+}
+
+async fn write_static_route(
+    options: &LeptosOptions,
+    response_options: Option<ResponseOptions>,
+    path: &str,
+    html: &str,
+) -> Result<(), std::io::Error> {
+    if let Some(options) = response_options {
+        STATIC_HEADERS.insert(path.to_string(), options);
+    }
+
+    let path = static_path(options, path);
+    let path = Path::new(&path);
+    if let Some(path) = path.parent() {
+        tokio::fs::create_dir_all(path).await?;
+    }
+    tokio::fs::write(path, &html).await?;
+
+    Ok(())
+}
+
+fn handle_static_route<IV>(
+    additional_context: impl Fn() + 'static + Clone + Send,
+    app_fn: impl Fn() -> IV + Clone + Send + 'static,
+    regenerate: Vec<RegenerationFn>,
+) -> Route
+where
+    IV: IntoView + 'static,
+{
+    let handler = move |req: HttpRequest, data: Data<LeptosOptions>| {
+        Box::pin({
+            let app_fn = app_fn.clone();
+            let additional_context = additional_context.clone();
+            let regenerate = regenerate.clone();
+            async move {
+                let options = data.into_inner();
+                let orig_path = req.uri().path();
+                let path = static_path(&options, orig_path);
+                let path = Path::new(&path);
+                let exists = tokio::fs::try_exists(path).await.unwrap_or(false);
+
+                let (response_options, html) = if !exists {
+                    let path = ResolvedStaticPath::new(orig_path);
+
+                    let (owner, html) = path
+                        .build(
+                            move |path: &ResolvedStaticPath| {
+                                StaticRouteGenerator::render_route(
+                                    path.to_string(),
+                                    app_fn.clone(),
+                                    additional_context.clone(),
+                                )
+                            },
+                            move |path: &ResolvedStaticPath,
+                                  owner: &Owner,
+                                  html: String| {
+                                let options = options.clone();
+                                let path = path.to_owned();
+                                let response_options = owner.with(use_context);
+                                async move {
+                                    write_static_route(
+                                        &options,
+                                        response_options,
+                                        path.as_ref(),
+                                        &html,
+                                    )
+                                    .await
+                                }
+                            },
+                            was_404,
+                            regenerate,
+                        )
+                        .await;
+                    (owner.with(use_context::<ResponseOptions>), html)
+                } else {
+                    let headers =
+                        STATIC_HEADERS.get(orig_path).map(|v| v.clone());
+                    (headers, None)
+                };
+
+                // if html is Some(_), it means that `was_error_response` is true and we're not
+                // actually going to cache this route, just return it as HTML
+                //
+                // this if for thing like 404s, where we do not want to cache an endless series of
+                // typos (or malicious requests)
+                let mut res = ActixResponse(match html {
+                    Some(html) => {
+                        HttpResponse::Ok().content_type("text/html").body(html)
+                    }
+                    None => match NamedFile::open(path) {
+                        Ok(res) => res.into_response(&req),
+                        Err(err) => HttpResponse::InternalServerError()
+                            .body(err.to_string()),
+                    },
+                });
+
+                if let Some(options) = response_options {
+                    res.extend_response(&options);
+                }
+
+                res.0
+            }
+        })
+    };
+    web::get().to(handler)
+}
+
 pub enum DataResponse<T> {
     Data(T),
     Response(actix_web::dev::Response<BoxBody>),
 }
 
-// TODO static response
-/*
-fn handle_static_response<'a, IV>(
-    path: &'a str,
-    options: &'a LeptosOptions,
-    app_fn: &'a (impl Fn() -> IV + Clone + Send + 'static),
-    additional_context: &'a (impl Fn() + 'static + Clone + Send),
-    res: StaticResponse,
-) -> Pin<Box<dyn Future<Output = HttpResponse<String>> + 'a>>
-where
-    IV: IntoView + 'static,
-{
-    Box::pin(async move {
-        match res {
-            StaticResponse::ReturnResponse {
-                body,
-                status,
-                content_type,
-            } => {
-                let mut res = HttpResponse::new(match status {
-                    StaticStatusCode::Ok => StatusCode::OK,
-                    StaticStatusCode::NotFound => StatusCode::NOT_FOUND,
-                    StaticStatusCode::InternalServerError => {
-                        StatusCode::INTERNAL_SERVER_ERROR
-                    }
-                });
-                if let Some(v) = content_type {
-                    res.headers_mut().insert(
-                        HeaderName::from_static("content-type"),
-                        HeaderValue::from_static(v),
-                    );
-                }
-                res.set_body(body)
-            }
-            StaticResponse::RenderDynamic => {
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    render_dynamic(
-                        path,
-                        options,
-                        app_fn.clone(),
-                        additional_context.clone(),
-                    )
-                    .await,
-                )
-                .await
-            }
-            StaticResponse::RenderNotFound => {
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    not_found_page(
-                        tokio::fs::read_to_string(not_found_path(options))
-                            .await,
-                    ),
-                )
-                .await
-            }
-            StaticResponse::WriteFile { body, path } => {
-                if let Some(path) = path.parent() {
-                    if let Err(e) = std::fs::create_dir_all(path) {
-                        tracing::error!(
-                            "encountered error {} writing directories {}",
-                            e,
-                            path.display()
-                        );
-                    }
-                }
-                if let Err(e) = std::fs::write(&path, &body) {
-                    tracing::error!(
-                        "encountered error {} writing file {}",
-                        e,
-                        path.display()
-                    );
-                }
-                handle_static_response(
-                    path.to_str().unwrap(),
-                    options,
-                    app_fn,
-                    additional_context,
-                    StaticResponse::ReturnResponse {
-                        body,
-                        status: StaticStatusCode::Ok,
-                        content_type: Some("text/html"),
-                    },
-                )
-                .await
-            }
-        }
-    })
-}
-
-fn static_route<IV>(
-    options: LeptosOptions,
-    app_fn: impl Fn() -> IV + Clone + Send + 'static,
-    additional_context: impl Fn() + 'static + Clone + Send,
-    method: Method,
-    mode: StaticMode,
-) -> Route
-where
-    IV: IntoView + 'static,
-{
-    match mode {
-        StaticMode::Incremental => {
-            let handler = move |req: HttpRequest| {
-                Box::pin({
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-                    async move {
-                        handle_static_response(
-                            req.path(),
-                            &options,
-                            &app_fn,
-                            &additional_context,
-                            incremental_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options,
-                                    req.path(),
-                                ))
-                                .await,
-                            ),
-                        )
-                        .await
-                    }
-                })
-            };
-            match method {
-                Method::Get => web::get().to(handler),
-                Method::Post => web::post().to(handler),
-                Method::Put => web::put().to(handler),
-                Method::Delete => web::delete().to(handler),
-                Method::Patch => web::patch().to(handler),
-            }
-        }
-        StaticMode::Upfront => {
-            let handler = move |req: HttpRequest| {
-                Box::pin({
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-                    async move {
-                        handle_static_response(
-                            req.path(),
-                            &options,
-                            &app_fn,
-                            &additional_context,
-                            upfront_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options,
-                                    req.path(),
-                                ))
-                                .await,
-                            ),
-                        )
-                        .await
-                    }
-                })
-            };
-            match method {
-                Method::Get => web::get().to(handler),
-                Method::Post => web::post().to(handler),
-                Method::Put => web::put().to(handler),
-                Method::Delete => web::delete().to(handler),
-                Method::Patch => web::patch().to(handler),
-            }
-        }
-    }
-}
-*/
-
 /// This trait allows one to pass a list of routes and a render function to Actix's router, letting us avoid
 /// having to use wildcards or manually define all routes in multiple places.
 pub trait LeptosRoutes {
@@ -1205,7 +1323,10 @@ where
         InitError = (),
     >,
 {
-    #[tracing::instrument(level = "trace", fields(error), skip_all)]
+    #[cfg_attr(
+        feature = "tracing",
+        tracing::instrument(level = "trace", fields(error), skip_all)
+    )]
     fn leptos_routes<IV>(
         self,
         paths: Vec<ActixRouteListing>,
@@ -1217,7 +1338,10 @@ where
         self.leptos_routes_with_context(paths, || {}, app_fn)
     }
 
-    #[tracing::instrument(level = "trace", fields(error), skip_all)]
+    #[cfg_attr(
+        feature = "tracing",
+        tracing::instrument(level = "trace", fields(error), skip_all)
+    )]
     fn leptos_routes_with_context<IV>(
         self,
         paths: Vec<ActixRouteListing>,
@@ -1247,19 +1371,15 @@ where
                     provide_context(method);
                     additional_context();
                 };
-                router = if let Some(static_mode) = listing.static_mode() {
-                    _ = static_mode;
-                    todo!() /*
-                            router.route(
-                                path,
-                                static_route(
-                                    app_fn.clone(),
-                                    additional_context_and_method.clone(),
-                                    method,
-                                    static_mode,
-                                ),
-                            )
-                            */
+                router = if matches!(listing.mode(), SsrMode::Static(_)) {
+                    router.route(
+                        path,
+                        handle_static_route(
+                            additional_context_and_method.clone(),
+                            app_fn.clone(),
+                            listing.regenerate.clone(),
+                        ),
+                    )
                 } else {
                     router.route(
                     path,
@@ -1291,6 +1411,7 @@ where
                             app_fn.clone(),
                             method,
                         ),
+                        _ => unreachable!()
                     },
                 )
                 };
@@ -1304,7 +1425,10 @@ where
 /// The default implementation of `LeptosRoutes` which takes in a list of paths, and dispatches GET requests
 /// to those paths to Leptos's renderer.
 impl LeptosRoutes for &mut ServiceConfig {
-    #[tracing::instrument(level = "trace", fields(error), skip_all)]
+    #[cfg_attr(
+        feature = "tracing",
+        tracing::instrument(level = "trace", fields(error), skip_all)
+    )]
     fn leptos_routes<IV>(
         self,
         paths: Vec<ActixRouteListing>,
@@ -1316,7 +1440,10 @@ impl LeptosRoutes for &mut ServiceConfig {
         self.leptos_routes_with_context(paths, || {}, app_fn)
     }
 
-    #[tracing::instrument(level = "trace", fields(error), skip_all)]
+    #[cfg_attr(
+        feature = "tracing",
+        tracing::instrument(level = "trace", fields(error), skip_all)
+    )]
     fn leptos_routes_with_context<IV>(
         self,
         paths: Vec<ActixRouteListing>,
@@ -1341,7 +1468,17 @@ impl LeptosRoutes for &mut ServiceConfig {
             let mode = listing.mode();
 
             for method in listing.methods() {
-                router = router.route(
+                if matches!(listing.mode(), SsrMode::Static(_)) {
+                    router = router.route(
+                        path,
+                        handle_static_route(
+                            additional_context.clone(),
+                            app_fn.clone(),
+                            listing.regenerate.clone(),
+                        ),
+                    )
+                } else {
+                    router = router.route(
                             path,
                             match mode {
                                 SsrMode::OutOfOrder => {
@@ -1371,8 +1508,10 @@ impl LeptosRoutes for &mut ServiceConfig {
                                     app_fn.clone(),
                                     method,
                                 ),
+                                _ => unreachable!()
                             },
                         );
+                }
             }
         }
 

integrations/axum/Cargo.toml

@@ -14,6 +14,7 @@ hydration_context = { workspace = true }
 axum = { version = "0.7.5", default-features = false, features = [
   "matched-path",
 ] }
+dashmap = "6"
 futures = "0.3.30"
 http = "1.1"
 http-body-util = "0.1.2"
@@ -23,12 +24,13 @@ leptos_macro = { workspace = true, features = ["axum"] }
 leptos_meta = { workspace = true, features = ["ssr"] }
 leptos_router = { workspace = true, features = ["ssr"] }
 leptos_integration_utils = { workspace = true }
+once_cell = "1"
 parking_lot = "0.12.3"
 serde_json = "1.0"
 tokio = { version = "1.39", default-features = false }
 tower = "0.4.13"
 tower-http = "0.5.2"
-tracing = "0.1.40"
+tracing = { version = "0.1.40", optional = true }
 
 [dev-dependencies]
 axum = "0.7.5"
@@ -36,8 +38,12 @@ tokio = { version = "1.39", features = ["net", "rt-multi-thread"] }
 
 [features]
 wasm = []
-default = ["tokio/fs", "tokio/sync", "tower-http/fs"]
+default = ["tokio/fs", "tokio/sync", "tower-http/fs", "tower/util"]
 islands-router = []
+tracing = ["dep:tracing"]
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--generate-link-to-definition"]
+
+[package.metadata.cargo-all-features]
+denylist = ["tracing"]

integrations/utils/Cargo.toml

@@ -16,7 +16,6 @@ leptos_meta = { workspace = true, features = ["ssr"] }
 leptos_router = { workspace = true, features = ["ssr"] }
 leptos_config = { workspace = true }
 reactive_graph = { workspace = true, features = ["sandboxed-arenas"] }
-tracing = "0.1.40"
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--generate-link-to-definition"]

integrations/utils/src/lib.rs

@@ -5,6 +5,7 @@ use leptos::{
     reactive_graph::owner::{Owner, Sandboxed},
     IntoView,
 };
+use leptos_config::LeptosOptions;
 use leptos_meta::ServerMetaContextOutput;
 use std::{future::Future, pin::Pin, sync::Arc};
 
@@ -58,7 +59,7 @@ pub trait ExtendResponse: Sized {
                     // drop the owner, cleaning up the reactive runtime,
                     // once the stream is over
                     .chain(once(async move {
-                        drop(owner);
+                        owner.unset();
                         Default::default()
                     })),
             ));
@@ -132,3 +133,13 @@ where
     }));
     (owner, stream)
 }
+
+pub fn static_file_path(options: &LeptosOptions, path: &str) -> String {
+    let trimmed_path = path.trim_start_matches('/');
+    let path = if trimmed_path.is_empty() {
+        "index"
+    } else {
+        trimmed_path
+    };
+    format!("{}/{}.html", options.site_root, path)
+}

leptos/Cargo.toml

@@ -30,7 +30,7 @@ reactive_graph = { workspace = true, features = ["serde"] }
 rustc-hash = "2.0"
 tachys = { workspace = true, features = ["reactive_graph", "oco"] }
 thiserror = "1.0"
-tracing = "0.1.40"
+tracing = { version = "0.1.40", optional = true }
 typed-builder = "0.19.1"
 typed-builder-macro = "0.19.1"
 serde = "1.0"
@@ -56,6 +56,7 @@ hydration = [
   "reactive_graph/hydration",
   "leptos_server/hydration",
   "hydration_context/browser",
+  "leptos_dom/hydration"
 ]
 csr = ["leptos_macro/csr", "reactive_graph/effects"]
 hydrate = [
@@ -76,13 +77,20 @@ ssr = [
 nightly = ["leptos_macro/nightly", "reactive_graph/nightly", "tachys/nightly"]
 rkyv = ["server_fn/rkyv"]
 tracing = [
+  "dep:tracing",
   "reactive_graph/tracing",
   "tachys/tracing",
-] #, "leptos_macro/tracing", "leptos_dom/tracing"]
+  "leptos_macro/tracing",
+  "leptos_dom/tracing",
+  "leptos_server/tracing",
+]
 nonce = ["base64", "rand"]
 spin = ["leptos-spin-macro"]
 experimental-islands = ["leptos_macro/experimental-islands", "dep:serde_json"]
-trace-component-props = ["leptos_macro/trace-component-props"]
+trace-component-props = [
+  "leptos_macro/trace-component-props",
+  "leptos_dom/trace-component-props"
+]
 delegation = ["tachys/delegation"]
 
 [package.metadata.cargo-all-features]
@@ -93,52 +101,22 @@ denylist = [
   "rustls",
   "default-tls",
   "wasm-bindgen",
-  "rkyv",                  # was causing clippy issues on nightly
+  "rkyv", # was causing clippy issues on nightly
   "trace-component-props",
   "spin",
   "experimental-islands",
 ]
 skip_feature_sets = [
-  [
-    "csr",
-    "ssr",
-  ],
-  [
-    "csr",
-    "hydrate",
-  ],
-  [
-    "ssr",
-    "hydrate",
-  ],
-  [
-    "serde",
-    "serde-lite",
-  ],
-  [
-    "serde-lite",
-    "miniserde",
-  ],
-  [
-    "serde",
-    "miniserde",
-  ],
-  [
-    "serde",
-    "rkyv",
-  ],
-  [
-    "miniserde",
-    "rkyv",
-  ],
-  [
-    "serde-lite",
-    "rkyv",
-  ],
-  [
-    "default-tls",
-    "rustls",
-  ],
+  ["csr", "ssr"],
+  ["csr", "hydrate"],
+  ["ssr", "hydrate"],
+  ["serde", "serde-lite"],
+  ["serde-lite", "miniserde"],
+  ["serde", "miniserde"],
+  ["serde", "rkyv"],
+  ["miniserde", "rkyv"],
+  ["serde-lite", "rkyv"],
+  ["default-tls", "rustls"],
 ]
 
 [package.metadata.docs.rs]

leptos/src/animated_show.rs

@@ -43,10 +43,7 @@ use leptos_reactive::{
 /// }
 /// # }
 /// ```
-#[cfg_attr(
-    any(debug_assertions, feature = "ssr"),
-    tracing::instrument(level = "trace", skip_all)
-)]
+#[cfg_attr(feature = "tracing", tracing::instrument(level = "trace", skip_all))]
 #[component]
 pub fn AnimatedShow(
     /// The components Show wraps

leptos/src/callback.rs

@@ -10,13 +10,13 @@
 //!
 //! #[component]
 //! fn MyComponent(
-//!     #[prop(into)] render_number: Callback<i32, String>,
+//!     #[prop(into)] render_number: Callback<(i32,), String>,
 //! ) -> impl IntoView {
 //!     view! {
 //!         <div>
-//!             {render_number.run(1)}
+//!             {render_number.run((1,))}
 //!             // callbacks can be called multiple times
-//!             {render_number.run(42)}
+//!             {render_number.run((42,))}
 //!         </div>
 //!     }
 //! }
@@ -85,17 +85,39 @@ impl<In: 'static, Out: 'static> Callable<In, Out> for UnsyncCallback<In, Out> {
     }
 }
 
-impl<F, In, T, Out> From<F> for UnsyncCallback<In, Out>
-where
-    F: Fn(In) -> T + 'static,
-    T: Into<Out> + 'static,
-    In: 'static,
-{
-    fn from(f: F) -> Self {
-        Self::new(move |x| f(x).into())
-    }
+macro_rules! impl_unsync_callable_from_fn {
+    ($($arg:ident),*) => {
+        impl<F, $($arg,)* T, Out> From<F> for UnsyncCallback<($($arg,)*), Out>
+        where
+            F: Fn($($arg),*) -> T + 'static,
+            T: Into<Out> + 'static,
+            $($arg: 'static,)*
+        {
+            fn from(f: F) -> Self {
+                paste::paste!(
+                    Self::new(move |($([<$arg:lower>],)*)| f($([<$arg:lower>]),*).into())
+                )
+            }
+        }
+    };
 }
 
+impl_unsync_callable_from_fn!();
+impl_unsync_callable_from_fn!(P1);
+impl_unsync_callable_from_fn!(P1, P2);
+impl_unsync_callable_from_fn!(P1, P2, P3);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9, P10);
+impl_unsync_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11);
+impl_unsync_callable_from_fn!(
+    P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12
+);
+
 /// Callbacks define a standard way to store functions and closures.
 ///
 /// # Example
@@ -104,11 +126,11 @@ where
 /// # use leptos::callback::{Callable, Callback};
 /// #[component]
 /// fn MyComponent(
-///     #[prop(into)] render_number: Callback<i32, String>,
+///     #[prop(into)] render_number: Callback<(i32,), String>,
 /// ) -> impl IntoView {
 ///     view! {
 ///         <div>
-///             {render_number.run(42)}
+///             {render_number.run((42,))}
 ///         </div>
 ///     }
 /// }
@@ -148,17 +170,37 @@ impl<In, Out> Clone for Callback<In, Out> {
 
 impl<In, Out> Copy for Callback<In, Out> {}
 
-impl<F, In, T, Out> From<F> for Callback<In, Out>
-where
-    F: Fn(In) -> T + Send + Sync + 'static,
-    T: Into<Out> + 'static,
-    In: Send + Sync + 'static,
-{
-    fn from(f: F) -> Self {
-        Self::new(move |x| f(x).into())
-    }
+macro_rules! impl_callable_from_fn {
+    ($($arg:ident),*) => {
+        impl<F, $($arg,)* T, Out> From<F> for Callback<($($arg,)*), Out>
+        where
+            F: Fn($($arg),*) -> T + Send + Sync + 'static,
+            T: Into<Out> + 'static,
+            $($arg: Send + Sync + 'static,)*
+        {
+            fn from(f: F) -> Self {
+                paste::paste!(
+                    Self::new(move |($([<$arg:lower>],)*)| f($([<$arg:lower>]),*).into())
+                )
+            }
+        }
+    };
 }
 
+impl_callable_from_fn!();
+impl_callable_from_fn!(P1);
+impl_callable_from_fn!(P1, P2);
+impl_callable_from_fn!(P1, P2, P3);
+impl_callable_from_fn!(P1, P2, P3, P4);
+impl_callable_from_fn!(P1, P2, P3, P4, P5);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9, P10);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11);
+impl_callable_from_fn!(P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12);
+
 impl<In: 'static, Out: 'static> Callback<In, Out> {
     /// Creates a new callback from the given function.
     pub fn new<F>(fun: F) -> Self
@@ -190,11 +232,15 @@ mod tests {
 
     #[test]
     fn runback_from() {
-        let _callback: Callback<(), String> = (|()| "test").into();
+        let _callback: Callback<(), String> = (|| "test").into();
+        let _callback: Callback<(i32, String), String> =
+            (|num, s| format!("{num} {s}")).into();
     }
 
     #[test]
     fn sync_callback_from() {
-        let _callback: UnsyncCallback<(), String> = (|()| "test").into();
+        let _callback: UnsyncCallback<(), String> = (|| "test").into();
+        let _callback: UnsyncCallback<(i32, String), String> =
+            (|num, s| format!("{num} {s}")).into();
     }
 }

leptos/src/error_boundary.rs

@@ -4,7 +4,7 @@ use leptos_macro::component;
 use reactive_graph::{
     computed::ArcMemo,
     effect::RenderEffect,
-    owner::Owner,
+    owner::{provide_context, Owner},
     signal::ArcRwSignal,
     traits::{Get, Update, With, WithUntracked},
 };
@@ -13,6 +13,7 @@ use std::{fmt::Debug, marker::PhantomData, sync::Arc};
 use tachys::{
     html::attribute::Attribute,
     hydration::Cursor,
+    reactive_graph::OwnedView,
     renderer::Renderer,
     ssr::StreamBuilder,
     view::{
@@ -96,17 +97,25 @@ where
     let hook = hook as Arc<dyn ErrorHook>;
 
     let _guard = throw_error::set_error_hook(Arc::clone(&hook));
-    let children = children.into_inner()();
 
-    ErrorBoundaryView {
-        hook,
-        boundary_id,
-        errors_empty,
-        children,
-        errors,
-        fallback,
-        rndr: PhantomData,
-    }
+    let owner = Owner::new();
+    let children = owner.with(|| {
+        provide_context(Arc::clone(&hook));
+        children.into_inner()()
+    });
+
+    OwnedView::new_with_owner(
+        ErrorBoundaryView {
+            hook,
+            boundary_id,
+            errors_empty,
+            children,
+            errors,
+            fallback,
+            rndr: PhantomData,
+        },
+        owner,
+    )
 }
 
 struct ErrorBoundaryView<Chil, FalFn, Rndr> {

leptos/src/form.rs

@@ -69,10 +69,7 @@ use web_sys::{
 ///     Ok(())
 /// }
 /// ```
-#[cfg_attr(
-    any(debug_assertions, feature = "ssr"),
-    tracing::instrument(level = "trace", skip_all,)
-)]
+#[cfg_attr(feature = "tracing", tracing::instrument(level = "trace", skip_all))]
 #[component]
 pub fn ActionForm<ServFn>(
     /// The action from which to build the form. This should include a URL, which can be generated