Some additional setup

Cargo.lock

@@ -176,6 +176,16 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "const-str"
 version = "0.6.4"
@@ -753,6 +763,7 @@ dependencies = [
 name = "leptos-tutorial"
 version = "0.1.0"
 dependencies = [
+ "console_error_panic_hook",
  "leptos",
 ]
 

Cargo.toml

@@ -4,4 +4,5 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+console_error_panic_hook = "0.1.7"
 leptos = { version = "0.8.14", features = ["csr"] }

justfile

@@ -0,0 +1,5 @@
+_default:
+    @just --list
+
+trunk-run:
+    trunk serve --open

src/main.rs

@@ -1,5 +1,6 @@
 use leptos::prelude::*;
 
 fn main() {
+    console_error_panic_hook::set_once();
     leptos::mount::mount_to_body(|| view! { <p>"Hello, world!"</p> })
 }