diff --git a/.github/workflows/build_wasm.yml b/.github/workflows/build_wasm.yml
new file mode 100644
index 0000000000..e424003b7d
--- /dev/null
+++ b/.github/workflows/build_wasm.yml
@@ -0,0 +1,71 @@
+name: build_wasm
+
+on:
+  push:
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+
+  build_wasm:
+    name: Build_WASM
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - name: Linux_EMCC_2
+          os: ubuntu-20.04
+          compiler_version: "2.0.20"
+
+    steps:
+    - name: Sync Repository
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+
+    - name: Setup Node
+      uses: actions/setup-node@v1
+      with:
+         node-version: '12'
+
+    - name: Install Dependencies (Linux)
+      run: |
+        sudo apt-get update
+        sudo apt-get install libglu1-mesa-dev xorg-dev
+        mkdir -p tmp
+        cd tmp
+        git clone --recursive https://github.com/emscripten-core/emsdk
+        cd emsdk
+        ./emsdk install ${{ matrix.compiler_version }}
+        ./emsdk activate ${{ matrix.compiler_version }}
+        source ./emsdk_env.sh
+        echo "EMSDK=$EMSDK" >> $GITHUB_ENV
+
+    - name: Create Build Directory
+      run: mkdir build
+      
+    - name: CMake Generate
+      run: cmake -DMATERIALX_BUILD_JS=ON -DMATERIALX_EMSDK_PATH=${{ env.EMSDK }} -DMATERIALX_BUILD_RENDER=OFF -DMATERIALX_BUILD_TESTS=OFF -DMATERIALX_TEST_RENDER=OFF -DMATERIALX_WARNINGS_AS_ERRORS=ON ${{matrix.cmake_config}} ..
+      working-directory: build
+
+    - name: CMake Build
+      run: cmake --build . --target install --config Release --parallel 2
+      working-directory: build
+    
+    - name: JS Tests
+      run: |
+        cd ../source/JsMaterialX/test/
+        npm install
+        npm run test
+      working-directory: build
+
+    - name: Upload Installed Package
+      uses: actions/upload-artifact@v2
+      with:
+        name: MaterialX_${{ matrix.name }}
+        path: build/installed/
\ No newline at end of file
diff --git a/source/JsMaterialX/JsMaterialXCore/JsElement.cpp b/source/JsMaterialX/JsMaterialXCore/JsElement.cpp
index 3ef0563634..9a9bc6dbd7 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsElement.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsElement.cpp
@@ -214,9 +214,9 @@ extern "C"
             .function("getFilenameSubstitutions", ems::optional_override([](mx::StringResolver &self) {
                           std::unordered_map<std::string, std::string> res = self.mx::StringResolver::getFilenameSubstitutions();
                           ems::val obj = ems::val::object();
-                          for (const auto &[key, value] : res)
+                          for (std::pair<std::string, std::string> element : res)
                           {
-                              obj.set(key, value);
+                              obj.set(element.first, element.second);
                           }
 
                           return obj;
@@ -225,9 +225,9 @@ extern "C"
             .function("getGeomNameSubstitutions", ems::optional_override([](mx::StringResolver &self) {
                           std::unordered_map<std::string, std::string> res = self.mx::StringResolver::getGeomNameSubstitutions();
                           ems::val obj = ems::val::object();
-                          for (const auto &[key, value] : res)
+                          for (std::pair<std::string, std::string> element : res)
                           {
-                              obj.set(key, value);
+                              obj.set(element.first, element.second);
                           }
 
                           return obj;