found an example that just works

candle-wasm-examples-whisper/src/bin/app.rs

@@ -0,0 +1,4 @@
+fn main() {
+    wasm_logger::init(wasm_logger::Config::new(log::Level::Trace));
+    yew::Renderer::<candle_wasm_example_whisper::App>::new().render();
+}

candle-wasm-examples-whisper/src/bin/m.rs

@@ -0,0 +1,53 @@
+use candle_wasm_example_whisper::worker::{Decoder as D, ModelData};
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct Decoder {
+    decoder: D,
+}
+
+#[wasm_bindgen]
+impl Decoder {
+    #[wasm_bindgen(constructor)]
+    #[allow(clippy::too_many_arguments)]
+    pub fn new(
+        weights: Vec<u8>,
+        tokenizer: Vec<u8>,
+        mel_filters: Vec<u8>,
+        config: Vec<u8>,
+        quantized: bool,
+        is_multilingual: bool,
+        timestamps: bool,
+        task: Option<String>,
+        language: Option<String>,
+    ) -> Result<Decoder, JsError> {
+        let decoder = D::load(ModelData {
+            tokenizer,
+            mel_filters,
+            config,
+            quantized,
+            weights,
+            is_multilingual,
+            timestamps,
+            task,
+            language,
+        });
+
+        match decoder {
+            Ok(decoder) => Ok(Self { decoder }),
+            Err(e) => Err(JsError::new(&e.to_string())),
+        }
+    }
+
+    #[wasm_bindgen]
+    pub fn decode(&mut self, wav_input: Vec<u8>) -> Result<String, JsError> {
+        let segments = self
+            .decoder
+            .convert_and_run(&wav_input)
+            .map_err(|e| JsError::new(&e.to_string()))?;
+        let json = serde_json::to_string(&segments)?;
+        Ok(json)
+    }
+}
+
+fn main() {}

candle-wasm-examples-whisper/src/bin/worker.rs

@@ -0,0 +1,4 @@
+use yew_agent::PublicWorker;
+fn main() {
+    candle_wasm_example_whisper::Worker::register();
+}