Use node version 22 to run wasm based tests

.github/workflows/deploy-github-page.yml

@@ -64,15 +64,17 @@ jobs:
             -DSYSROOT_PATH=$SYSROOT_PATH                      \
             -DCMAKE_COMPILE_WARNING_AS_ERROR=ON            \
             ..
-          emmake make -j ${{ env.ncpus }} check-xeus-cpp
+
+          micromamba create -n node-env -c conda-forge nodejs=22
+          export PATH="$MAMBA_ROOT_PREFIX/envs/node-env/bin:$PATH"
+
+          make check-xeus-cpp
           emmake make -j ${{ env.ncpus }} install
 
       - name: Test Emscripten xeus-cpp in browser
         shell: bash -l {0}
         run: |
           set -e
-          micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus
-          micromamba activate xeus-lite-host
           cd build/test
           # Fresh install browsers, and run Emscripten tests in them
           # This is to match the Emscripten build instructions, where
@@ -140,6 +142,7 @@ jobs:
       - name: Jupyter Lite integration
         shell: bash -l {0}
         run: |
+          micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge
           micromamba activate xeus-lite-host
           jupyter lite build \
               --XeusAddon.prefix=${{ env.PREFIX }} \

.github/workflows/main.yml

@@ -191,8 +191,6 @@ jobs:
             os: ubuntu-24.04
           - name: osx15-arm
             os: macos-15
-          - name: osx26-arm
-            os: macos-26
 
     steps:
       - uses: actions/checkout@v5
@@ -238,16 +236,17 @@ jobs:
             -DSYSROOT_PATH=$SYSROOT_PATH                      \
             -DCMAKE_COMPILE_WARNING_AS_ERROR=ON            \
             ..
-          emmake make -j ${{ env.ncpus }} check-xeus-cpp
+
+          micromamba create -n node-env -c conda-forge nodejs=22
+          export PATH="$MAMBA_ROOT_PREFIX/envs/node-env/bin:$PATH"
+
+          make check-xeus-cpp
           emmake make -j ${{ env.ncpus }} install
 
       - name: Test Emscripten xeus-cpp in browser
         shell: bash -l {0}
         run: |
-          export BUILD_PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-build
           set -e
-          micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyterlite-xeus
-          micromamba activate xeus-lite-host
           cd build/test
           # Fresh install browsers, and run Emscripten tests in them
           # This is to match the Emscripten build instructions, where
@@ -320,6 +319,7 @@ jobs:
       - name: Jupyter Lite integration
         shell: bash -l {0}
         run: |
+          micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyterlite-xeus -c conda-forge
           micromamba activate xeus-lite-host
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }}
 

CONTRIBUTING.md

@@ -74,7 +74,7 @@ micromamba create -f environment-wasm-build.yml -y
 micromamba activate xeus-cpp-wasm-build
 ```
 
-You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following
+You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following. Prefer using node 22 and above as prior versions lead to flaky test runs. Once the test pass, run the install command.
 
 ```bash
 micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32
@@ -91,7 +91,12 @@ emcmake cmake \
         -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
         -DSYSROOT_PATH=$SYSROOT_PATH                      \
         ..
-emmake make check-xeus-cpp
+
+micromamba create -n node-env -c conda-forge nodejs=22
+export PATH="$MAMBA_ROOT_PREFIX/envs/node-env/bin:$PATH"
+
+make check-xeus-cpp
+emmake make install
 ```
 
 It is possible to run the Emscripten tests in a headless browser. We will run our tests in a fresh installed browser. Installing the browsers, and running the tests within the installed browsers will be platform dependent. To do this for Chrome and Firefox on MacOS execute the following
@@ -148,12 +153,6 @@ echo "Running test_xeus_cpp in Google Chrome"
 python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 ```
 
-After you have checked that the kernel passes all the tests, you can install it by executing
-
-```bash
-emmake make install
-```
-
 To build and test Jupyter Lite with this kernel locally you can execute the following
 ```bash
 micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge

README.md

@@ -90,7 +90,7 @@ micromamba create -f environment-wasm-build.yml -y
 micromamba activate xeus-cpp-wasm-build
 ```
 
-You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following
+You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following. Prefer using node 22 and above as prior versions lead to flaky test runs. Once the test pass, run the install command.
 ```bash
 micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32
 mkdir build
@@ -106,7 +106,12 @@ emcmake cmake \
         -DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
         -DSYSROOT_PATH=$SYSROOT_PATH                      \
         ..
-emmake make check-xeus-cpp
+
+micromamba create -n node-env -c conda-forge nodejs=22
+export PATH="$MAMBA_ROOT_PREFIX/envs/node-env/bin:$PATH"
+
+make check-xeus-cpp
+emmake make install
 ```
 
 It is possible to run the Emscripten tests in a headless browser. We will run our tests in a fresh installed browser. Installing the browsers, and running the tests within the installed browsers will be platform dependent. To do this for Chrome and Firefox on MacOS execute the following
@@ -163,12 +168,6 @@ echo "Running test_xeus_cpp in Google Chrome"
 python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 ```
 
-After you have checked that the kernel passes all the tests, you can install it by executing
-
-```bash
-emmake make install
-```
-
 To build and test Jupyter Lite with this kernel locally you can execute the following
 ```bash
 micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge

docs/source/InstallationAndUsage.rst

@@ -68,7 +68,7 @@ the following
     micromamba create -f environment-wasm-build.yml -y
     micromamba activate xeus-cpp-wasm-build
 
-You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following
+You are now in a position to build the xeus-cpp kernel. You build and test it in node by executing the following. Prefer using node 22 and above as prior versions lead to flaky test runs. Once the test pass, run the install command.
 
 .. code-block:: bash
 
@@ -86,7 +86,12 @@ You are now in a position to build the xeus-cpp kernel. You build and test it in
 		-DCMAKE_FIND_ROOT_PATH=$PREFIX                    \
 		-DSYSROOT_PATH=$SYSROOT_PATH                      \
 		..
-    emmake make check-xeus-cpp
+
+    micromamba create -n node-env -c conda-forge nodejs=22
+    export PATH="$MAMBA_ROOT_PREFIX/envs/node-env/bin:$PATH"
+
+    make check-xeus-cpp
+    emmake make install
 
 It is possible to run the Emscripten tests in a headless browser. We will run our tests in a fresh installed browser. Installing the browsers, and running the tests within the installed browsers will be platform dependent. To do this for Chrome and Firefox on MacOS execute the following
 
@@ -142,12 +147,6 @@ To do this on Ubuntu x86 execute the following
     echo "Running test_xeus_cpp in Google Chrome"
     python $BUILD_PREFIX/bin/emrun.py --browser="google-chrome" --kill_exit --timeout 60 --browser-args="--headless --no-sandbox"  test_xeus_cpp.html
 
-After you have checked that the kernel passes all the tests, you can install it by executing
-
-.. code-block:: bash
-
-    emmake make install
-
 To build and test Jupyter Lite with this kernel locally you can execute the following
 
 .. code-block:: bash