tracing-wasm and init function

Cargo.toml

@@ -20,3 +20,4 @@ wee_alloc = "0.4.5"
 web-sys = { version = "0.3.56", features = ["HtmlCanvasElement"] }
 meval = { git = "https://github.com/Titaniumtown/meval-rs.git" }
 console_error_panic_hook = "0.1.7"
+tracing-wasm = "0.2.1"

src/lib.rs

@@ -21,6 +21,23 @@ extern "C" {
     fn log(s: &str);
 }
 
+#[wasm_bindgen(start)]
+pub fn init() {
+    log("Initializing...");
+
+    // See performance in browser profiler!
+    log("Initializing tracing_wasm...");
+    tracing_wasm::set_as_global_default();
+    log("Initialized tracing_wasm!");
+
+    // Used in order to hook into `panic!()` to log in the browser's console
+    log("Initializing console_error_panic_hook...");
+    panic::set_hook(Box::new(console_error_panic_hook::hook));
+    log("Initialized console_error_panic_hook!");
+
+    log("Finished initializing!");
+}
+
 // Manages Chart generation and caching of values
 #[wasm_bindgen]
 pub struct ChartManager {
@@ -54,9 +71,6 @@ impl ChartManager {
         }
     }
 
-    // Used in order to hook into `panic!()` to log in the browser's console
-    pub fn init_panic_hook() { panic::set_hook(Box::new(console_error_panic_hook::hook)); }
-
     // Tests function to make sure it's able to be parsed. Returns the string of the Error produced, or an empty string if it runs successfully.
     pub fn test_func(function_string: String) -> String {
         // Factorials do not work, and it would be really difficult to make them work

www/index.js

@@ -27,7 +27,6 @@ export function main() {
 /** This function is used in `bootstrap.js` to setup imports. */
 export function setup(WasmChart) {
     ChartManager = WasmChart;
-    ChartManager.init_panic_hook(); // Allows `panic!()` to log in the browser's console
 }
 
 /** Add event listeners. */