Env logger feature

packages/logger/Cargo.toml

@@ -17,6 +17,10 @@ dioxus-cli-config = { workspace =  true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true, features = ["registry", "std"] }
 
+[features]
+default = []
+env-filter = ["tracing-subscriber/env-filter"]
+
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 tracing-wasm = { workspace = true }
 console_error_panic_hook = { workspace = true }

packages/logger/README.md

@@ -64,9 +64,8 @@ fn App() -> Element {
     p { "hi" }
   }
 }
-
-
 ```
+For non-wasm targets, the `env-filter` feature enables runtime filtering based on the `RUST_LOG` environment variable. e.g. `RUST_LOG=none,myAppName=trace`, see [here](https://docs.rs/tracing-subscriber/latest/tracing_subscriber/filter/struct.EnvFilter.html#directives) for syntax.
 
 ## Platform Support
 Dioxus logger will eventually support every target that Dioxus does. Currently mobile and TUI are not supported.

packages/logger/src/lib.rs

@@ -98,6 +98,8 @@ pub fn init(level: Level) -> Result<(), SetGlobalDefaultError> {
     #[cfg(not(target_arch = "wasm32"))]
     {
         let sub = tracing_subscriber::FmtSubscriber::builder().with_max_level(level);
+        #[cfg(feature = "env-filter")]
+        let sub = sub.with_env_filter(tracing_subscriber::EnvFilter::from_default_env());
 
         if !dioxus_cli_config::is_cli_enabled() {
             return set_global_default(sub.finish());