Use Emscripten provided version of Node.js

Author: Conarnar

.ci/scripts/setup-emscripten.sh

@@ -1,12 +1,6 @@
 
 set -ex
 
-install_nodejs() {
-    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
-    \. "$HOME/.nvm/nvm.sh"
-    nvm install 22
-}
-
 install_emscripten() {
     git clone https://github.com/emscripten-core/emsdk.git
     pushd emsdk || return
@@ -16,5 +10,4 @@ install_emscripten() {
     popd || return
 }
 
-install_nodejs
 install_emscripten

examples/wasm/README.md

@@ -2,13 +2,6 @@
 
 This guide describes how to build ExecuTorch for WebAssembly (Wasm).
 
-## Directory Structure
-
-```
-examples/wasm
-└── README.md                         # This file
-```
-
 ## Prerequisites
 
 - [emscripten](https://emscripten.org/docs/getting_started/Tutorial.html)
@@ -55,7 +48,7 @@ If you need to rebuild `executor_runner` after modifying the contents of `./mode
 cmake --build cmake-out-wasm -j32 --target executor_runner --clean-first
 ```
 
-4. Run the model with Node.js (automatically installed with Emscripten).
+4. Run the model with Node.js. Emscripten should come preinstalled with a compatible version of Node.js. If you have an incompatible version of Node.js installed, you can use the Emscripten-provided version by running `$EMSDK_NODE` instead of `node`.
 
 ```bash
 # Run the tool on the generated model.

examples/wasm/test_build_wasm.sh

@@ -23,7 +23,7 @@ test_build_wasm() {
     rm -rf "${model_dir_name}"
 
     echo 'Running wasm build test'
-    node ${build_dir}/executor_runner.js --model_path="${model_export_name}"
+    $EMSDK_NODE ${build_dir}/executor_runner.js --model_path="${model_export_name}"
 }
 
 if [[ -z $PYTHON_EXECUTABLE ]];