From 4638048df02797737b21d4b3ef3b62297cd51686 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:04:32 -0400
Subject: [PATCH 1/9] test

---
 .github/workflows/validate-js-functions.yml   | 68 +++++++++++++++++++
 .github/workflows/validate-rust-functions.yml | 56 +++++++++++++++
 .github/workflows/validate-ts-functions.yml   | 68 +++++++++++++++++++
 ...t-checkout-validation-expected-output.json |  8 +++
 .../cart-checkout-validation-test-input.json  |  9 +++
 5 files changed, 209 insertions(+)
 create mode 100644 integration-tests/cart-checkout-validation-expected-output.json
 create mode 100644 integration-tests/cart-checkout-validation-test-input.json

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index 059bc801..ee9c19cc 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,3 +26,71 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
+      - name: Build JavaScript functions
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Building $function_dir"
+              cd "$function_dir"
+              if [ -f "package.json" ]; then
+                yarn build
+              fi
+              cd ..
+            fi
+          done
+      - name: Download function-runner
+        run: |
+          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
+          chmod +x function-runner
+      - name: Run integration tests
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Testing $function_dir"
+              cd "$function_dir"
+              
+              # Find the built wasm file
+              wasm_file=$(find . -name "*.wasm" | head -1)
+              
+              if [ -f "$wasm_file" ]; then
+                # Run function with test input
+                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
+                  echo "Running integration test for $function_dir"
+                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
+                  
+                  # Validate output against expected result
+                  if jq empty actual_output.json 2>/dev/null; then
+                    echo "Function output:"
+                    cat actual_output.json
+                    
+                    # Compare with expected output if available
+                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
+                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
+                        echo "✅ $function_dir output matches expected result"
+                      else
+                        echo "❌ $function_dir output doesn't match expected result"
+                        echo "Expected:"
+                        cat ../integration-tests/cart-checkout-validation-expected-output.json
+                        echo "Actual:"
+                        cat actual_output.json
+                        exit 1
+                      fi
+                    else
+                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
+                    fi
+                  else
+                    echo "❌ $function_dir produced invalid JSON output"
+                    cat actual_output.json
+                    exit 1
+                  fi
+                else
+                  echo "⚠️ No test input found for $function_dir"
+                fi
+              else
+                echo "❌ No wasm file found for $function_dir"
+                exit 1
+              fi
+              
+              cd ..
+            fi
+          done
diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index b443b4bd..81e9b027 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -30,3 +30,59 @@ jobs:
         run: cargo test
       - name: Build with wasm32-wasip1 target
         run: cargo build --release --target wasm32-wasip1
+      - name: Download function-runner
+        run: |
+          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
+          chmod +x function-runner
+      - name: Run integration tests
+        run: |
+          for function_dir in functions-*-rs; do
+            if [ -d "$function_dir" ]; then
+              echo "Testing $function_dir"
+              cd "$function_dir"
+              
+              # Find the built wasm file
+              wasm_file=$(find target/wasm32-wasip1/release -name "*.wasm" | head -1)
+              
+              if [ -f "$wasm_file" ]; then
+                # Run function with test input
+                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
+                  echo "Running integration test for $function_dir"
+                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
+                  
+                  # Validate output against expected result
+                  if jq empty actual_output.json 2>/dev/null; then
+                    echo "Function output:"
+                    cat actual_output.json
+                    
+                    # Compare with expected output if available
+                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
+                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
+                        echo "✅ $function_dir output matches expected result"
+                      else
+                        echo "❌ $function_dir output doesn't match expected result"
+                        echo "Expected:"
+                        cat ../integration-tests/cart-checkout-validation-expected-output.json
+                        echo "Actual:"
+                        cat actual_output.json
+                        exit 1
+                      fi
+                    else
+                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
+                    fi
+                  else
+                    echo "❌ $function_dir produced invalid JSON output"
+                    cat actual_output.json
+                    exit 1
+                  fi
+                else
+                  echo "⚠️ No test input found for $function_dir"
+                fi
+              else
+                echo "❌ No wasm file found for $function_dir"
+                exit 1
+              fi
+              
+              cd ..
+            fi
+          done
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index 8d362b10..2b6bb8b1 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,3 +26,71 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
+      - name: Build TypeScript functions
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Building $function_dir"
+              cd "$function_dir"
+              if [ -f "package.json" ]; then
+                yarn build
+              fi
+              cd ..
+            fi
+          done
+      - name: Download function-runner
+        run: |
+          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
+          chmod +x function-runner
+      - name: Run integration tests
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Testing $function_dir"
+              cd "$function_dir"
+              
+              # Find the built wasm file
+              wasm_file=$(find . -name "*.wasm" | head -1)
+              
+              if [ -f "$wasm_file" ]; then
+                # Run function with test input
+                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
+                  echo "Running integration test for $function_dir"
+                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
+                  
+                  # Validate output against expected result
+                  if jq empty actual_output.json 2>/dev/null; then
+                    echo "Function output:"
+                    cat actual_output.json
+                    
+                    # Compare with expected output if available
+                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
+                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
+                        echo "✅ $function_dir output matches expected result"
+                      else
+                        echo "❌ $function_dir output doesn't match expected result"
+                        echo "Expected:"
+                        cat ../integration-tests/cart-checkout-validation-expected-output.json
+                        echo "Actual:"
+                        cat actual_output.json
+                        exit 1
+                      fi
+                    else
+                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
+                    fi
+                  else
+                    echo "❌ $function_dir produced invalid JSON output"
+                    cat actual_output.json
+                    exit 1
+                  fi
+                else
+                  echo "⚠️ No test input found for $function_dir"
+                fi
+              else
+                echo "❌ No wasm file found for $function_dir"
+                exit 1
+              fi
+              
+              cd ..
+            fi
+          done
diff --git a/integration-tests/cart-checkout-validation-expected-output.json b/integration-tests/cart-checkout-validation-expected-output.json
new file mode 100644
index 00000000..8aa1e06e
--- /dev/null
+++ b/integration-tests/cart-checkout-validation-expected-output.json
@@ -0,0 +1,8 @@
+{
+  "errors": [
+    {
+      "localizedMessage": "Not possible to order more than one of each",
+      "target": "$.cart"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/integration-tests/cart-checkout-validation-test-input.json b/integration-tests/cart-checkout-validation-test-input.json
new file mode 100644
index 00000000..98aa1eae
--- /dev/null
+++ b/integration-tests/cart-checkout-validation-test-input.json
@@ -0,0 +1,9 @@
+{
+  "cart": {
+    "lines": [
+      {
+        "quantity": 3
+      }
+    ]
+  }
+}
\ No newline at end of file

From 54f7e3a1804c35bdf3de8c71712eb23ba0c0332a Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:08:27 -0400
Subject: [PATCH 2/9] Test2

---
 .github/workflows/validate-js-functions.yml   | 56 +++++--------------
 .github/workflows/validate-rust-functions.yml | 44 +++++----------
 .github/workflows/validate-ts-functions.yml   | 56 +++++--------------
 ...t-checkout-validation-expected-output.json |  8 ---
 .../cart-checkout-validation-test-input.json  |  9 ---
 5 files changed, 39 insertions(+), 134 deletions(-)
 delete mode 100644 integration-tests/cart-checkout-validation-expected-output.json
 delete mode 100644 integration-tests/cart-checkout-validation-test-input.json

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index ee9c19cc..b68ee094 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,24 +26,15 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Build JavaScript functions
-        run: |
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Building $function_dir"
-              cd "$function_dir"
-              if [ -f "package.json" ]; then
-                yarn build
-              fi
-              cd ..
-            fi
-          done
       - name: Download function-runner
         run: |
           curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
           chmod +x function-runner
       - name: Run integration tests
         run: |
+          # Create empty JSON input
+          echo '{}' > empty_input.json
+          
           for function_dir in functions-*-js; do
             if [ -d "$function_dir" ]; then
               echo "Testing $function_dir"
@@ -53,38 +44,17 @@ jobs:
               wasm_file=$(find . -name "*.wasm" | head -1)
               
               if [ -f "$wasm_file" ]; then
-                # Run function with test input
-                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
-                  echo "Running integration test for $function_dir"
-                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
-                  
-                  # Validate output against expected result
-                  if jq empty actual_output.json 2>/dev/null; then
-                    echo "Function output:"
-                    cat actual_output.json
-                    
-                    # Compare with expected output if available
-                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
-                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
-                        echo "✅ $function_dir output matches expected result"
-                      else
-                        echo "❌ $function_dir output doesn't match expected result"
-                        echo "Expected:"
-                        cat ../integration-tests/cart-checkout-validation-expected-output.json
-                        echo "Actual:"
-                        cat actual_output.json
-                        exit 1
-                      fi
-                    else
-                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
-                    fi
-                  else
-                    echo "❌ $function_dir produced invalid JSON output"
-                    cat actual_output.json
-                    exit 1
-                  fi
+                echo "Running integration test for $function_dir"
+                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
+                
+                # Validate output is valid JSON
+                if jq empty actual_output.json 2>/dev/null; then
+                  echo "✅ $function_dir produced valid JSON output"
+                  cat actual_output.json
                 else
-                  echo "⚠️ No test input found for $function_dir"
+                  echo "❌ $function_dir produced invalid JSON output"
+                  cat actual_output.json
+                  exit 1
                 fi
               else
                 echo "❌ No wasm file found for $function_dir"
diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index 81e9b027..bd34a22f 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -36,6 +36,9 @@ jobs:
           chmod +x function-runner
       - name: Run integration tests
         run: |
+          # Create empty JSON input
+          echo '{}' > empty_input.json
+          
           for function_dir in functions-*-rs; do
             if [ -d "$function_dir" ]; then
               echo "Testing $function_dir"
@@ -45,38 +48,17 @@ jobs:
               wasm_file=$(find target/wasm32-wasip1/release -name "*.wasm" | head -1)
               
               if [ -f "$wasm_file" ]; then
-                # Run function with test input
-                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
-                  echo "Running integration test for $function_dir"
-                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
-                  
-                  # Validate output against expected result
-                  if jq empty actual_output.json 2>/dev/null; then
-                    echo "Function output:"
-                    cat actual_output.json
-                    
-                    # Compare with expected output if available
-                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
-                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
-                        echo "✅ $function_dir output matches expected result"
-                      else
-                        echo "❌ $function_dir output doesn't match expected result"
-                        echo "Expected:"
-                        cat ../integration-tests/cart-checkout-validation-expected-output.json
-                        echo "Actual:"
-                        cat actual_output.json
-                        exit 1
-                      fi
-                    else
-                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
-                    fi
-                  else
-                    echo "❌ $function_dir produced invalid JSON output"
-                    cat actual_output.json
-                    exit 1
-                  fi
+                echo "Running integration test for $function_dir"
+                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
+                
+                # Validate output is valid JSON
+                if jq empty actual_output.json 2>/dev/null; then
+                  echo "✅ $function_dir produced valid JSON output"
+                  cat actual_output.json
                 else
-                  echo "⚠️ No test input found for $function_dir"
+                  echo "❌ $function_dir produced invalid JSON output"
+                  cat actual_output.json
+                  exit 1
                 fi
               else
                 echo "❌ No wasm file found for $function_dir"
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index 2b6bb8b1..ec8f59f6 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,24 +26,15 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Build TypeScript functions
-        run: |
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Building $function_dir"
-              cd "$function_dir"
-              if [ -f "package.json" ]; then
-                yarn build
-              fi
-              cd ..
-            fi
-          done
       - name: Download function-runner
         run: |
           curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
           chmod +x function-runner
       - name: Run integration tests
         run: |
+          # Create empty JSON input
+          echo '{}' > empty_input.json
+          
           for function_dir in functions-*-js; do
             if [ -d "$function_dir" ]; then
               echo "Testing $function_dir"
@@ -53,38 +44,17 @@ jobs:
               wasm_file=$(find . -name "*.wasm" | head -1)
               
               if [ -f "$wasm_file" ]; then
-                # Run function with test input
-                if [ -f "../integration-tests/cart-checkout-validation-test-input.json" ]; then
-                  echo "Running integration test for $function_dir"
-                  ../function-runner -f "$wasm_file" -i "../integration-tests/cart-checkout-validation-test-input.json" > actual_output.json
-                  
-                  # Validate output against expected result
-                  if jq empty actual_output.json 2>/dev/null; then
-                    echo "Function output:"
-                    cat actual_output.json
-                    
-                    # Compare with expected output if available
-                    if [ -f "../integration-tests/cart-checkout-validation-expected-output.json" ]; then
-                      if jq --argjson actual "$(cat actual_output.json)" --argjson expected "$(cat ../integration-tests/cart-checkout-validation-expected-output.json)" -n '$actual == $expected'; then
-                        echo "✅ $function_dir output matches expected result"
-                      else
-                        echo "❌ $function_dir output doesn't match expected result"
-                        echo "Expected:"
-                        cat ../integration-tests/cart-checkout-validation-expected-output.json
-                        echo "Actual:"
-                        cat actual_output.json
-                        exit 1
-                      fi
-                    else
-                      echo "✅ $function_dir produced valid JSON output (no expected output to compare)"
-                    fi
-                  else
-                    echo "❌ $function_dir produced invalid JSON output"
-                    cat actual_output.json
-                    exit 1
-                  fi
+                echo "Running integration test for $function_dir"
+                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
+                
+                # Validate output is valid JSON
+                if jq empty actual_output.json 2>/dev/null; then
+                  echo "✅ $function_dir produced valid JSON output"
+                  cat actual_output.json
                 else
-                  echo "⚠️ No test input found for $function_dir"
+                  echo "❌ $function_dir produced invalid JSON output"
+                  cat actual_output.json
+                  exit 1
                 fi
               else
                 echo "❌ No wasm file found for $function_dir"
diff --git a/integration-tests/cart-checkout-validation-expected-output.json b/integration-tests/cart-checkout-validation-expected-output.json
deleted file mode 100644
index 8aa1e06e..00000000
--- a/integration-tests/cart-checkout-validation-expected-output.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "errors": [
-    {
-      "localizedMessage": "Not possible to order more than one of each",
-      "target": "$.cart"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/integration-tests/cart-checkout-validation-test-input.json b/integration-tests/cart-checkout-validation-test-input.json
deleted file mode 100644
index 98aa1eae..00000000
--- a/integration-tests/cart-checkout-validation-test-input.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "cart": {
-    "lines": [
-      {
-        "quantity": 3
-      }
-    ]
-  }
-}
\ No newline at end of file

From f8de062e56cd183551739c95aa1638c1ad2b40e0 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:12:11 -0400
Subject: [PATCH 3/9] rust update, go to correct location of wasm

---
 .github/workflows/validate-rust-functions.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index bd34a22f..d5679ae9 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -44,8 +44,8 @@ jobs:
               echo "Testing $function_dir"
               cd "$function_dir"
               
-              # Find the built wasm file
-              wasm_file=$(find target/wasm32-wasip1/release -name "*.wasm" | head -1)
+              # Find the built wasm file (look in root target directory)
+              wasm_file=$(find ../target/wasm32-wasip1/release -name "*.wasm" | head -1)
               
               if [ -f "$wasm_file" ]; then
                 echo "Running integration test for $function_dir"

From 920beb0dd6666c8aa079ce670fb3fc8f8ac730b4 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:16:50 -0400
Subject: [PATCH 4/9] update function-runner install

---
 .github/workflows/validate-js-functions.yml   | 8 +++++---
 .github/workflows/validate-rust-functions.yml | 8 +++++---
 .github/workflows/validate-ts-functions.yml   | 8 +++++---
 3 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index b68ee094..5aa94dc2 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,10 +26,12 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Download function-runner
+      - name: Install function-runner
         run: |
-          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
-          chmod +x function-runner
+          # Install from source since binary releases have naming issues
+          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          # Move to current directory for easier access
+          cp ~/.cargo/bin/function-runner .
       - name: Run integration tests
         run: |
           # Create empty JSON input
diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index d5679ae9..ce54103c 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -30,10 +30,12 @@ jobs:
         run: cargo test
       - name: Build with wasm32-wasip1 target
         run: cargo build --release --target wasm32-wasip1
-      - name: Download function-runner
+      - name: Install function-runner
         run: |
-          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
-          chmod +x function-runner
+          # Install from source since binary releases have naming issues
+          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          # Move to current directory for easier access
+          cp ~/.cargo/bin/function-runner .
       - name: Run integration tests
         run: |
           # Create empty JSON input
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index ec8f59f6..6a70573e 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,10 +26,12 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Download function-runner
+      - name: Install function-runner
         run: |
-          curl -L -o function-runner https://github.com/Shopify/function-runner/releases/latest/download/function-runner-x86_64-unknown-linux-gnu
-          chmod +x function-runner
+          # Install from source since binary releases have naming issues
+          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          # Move to current directory for easier access
+          cp ~/.cargo/bin/function-runner .
       - name: Run integration tests
         run: |
           # Create empty JSON input

From f35997833f64f63a68a1f8707a127f4b12839361 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:19:46 -0400
Subject: [PATCH 5/9] update fr2

---
 .github/workflows/validate-js-functions.yml   | 2 +-
 .github/workflows/validate-rust-functions.yml | 2 +-
 .github/workflows/validate-ts-functions.yml   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index 5aa94dc2..e0cb2dfa 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
           # Move to current directory for easier access
           cp ~/.cargo/bin/function-runner .
       - name: Run integration tests
diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index ce54103c..2c35458c 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
           # Move to current directory for easier access
           cp ~/.cargo/bin/function-runner .
       - name: Run integration tests
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index 6a70573e..cf0ad30c 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git --locked
+          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
           # Move to current directory for easier access
           cp ~/.cargo/bin/function-runner .
       - name: Run integration tests

From 0aba4e4e140f897f27e7e67f49d62d6d30ccf07b Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:30:56 -0400
Subject: [PATCH 6/9] Ts/js changes

---
 .github/workflows/validate-js-functions.yml | 12 ++++++++++++
 .github/workflows/validate-ts-functions.yml | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index e0cb2dfa..8621854f 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,6 +26,18 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
+      - name: Build functions to WASM
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Building $function_dir"
+              cd "$function_dir"
+              if [ -f "package.json" ]; then
+                npm run build
+              fi
+              cd ..
+            fi
+          done
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index cf0ad30c..e2dfad6a 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,6 +26,18 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
+      - name: Build functions to WASM
+        run: |
+          for function_dir in functions-*-js; do
+            if [ -d "$function_dir" ]; then
+              echo "Building $function_dir"
+              cd "$function_dir"
+              if [ -f "package.json" ]; then
+                npm run build
+              fi
+              cd ..
+            fi
+          done
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues

From 02ac7c247b9e668fb14d4ac0b7e5e5725ba8b117 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:44:06 -0400
Subject: [PATCH 7/9] use javy to compoile js

---
 .github/workflows/validate-js-functions.yml | 25 +++++++++++++++++----
 .github/workflows/validate-ts-functions.yml | 25 +++++++++++++++++----
 2 files changed, 42 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index 8621854f..66953ad7 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,24 +26,41 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Build functions to WASM
+      - name: Install Javy (JavaScript to WASM compiler)
+        run: |
+          # Install Javy for compiling JavaScript to WebAssembly
+          curl -L -o javy.tar.gz https://github.com/bytecodealliance/javy/releases/latest/download/javy-x86_64-linux-v2.2.0.tar.gz
+          tar -xzf javy.tar.gz
+          chmod +x javy
+          
+      - name: Build JavaScript functions to WASM
         run: |
           for function_dir in functions-*-js; do
             if [ -d "$function_dir" ]; then
               echo "Building $function_dir"
               cd "$function_dir"
-              if [ -f "package.json" ]; then
-                npm run build
-              fi
+              
+              # Bundle the JavaScript code
+              npx esbuild src/index.ts --bundle --platform=node --target=es2020 --outfile=bundled.js
+              
+              # Compile to WASM using Javy
+              ../javy compile bundled.js -o function.wasm
+              
+              # Create dist directory and move WASM file
+              mkdir -p dist
+              mv function.wasm dist/
+              
               cd ..
             fi
           done
+          
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
           cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
           # Move to current directory for easier access
           cp ~/.cargo/bin/function-runner .
+          
       - name: Run integration tests
         run: |
           # Create empty JSON input
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index e2dfad6a..adfa14ec 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,24 +26,41 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Build functions to WASM
+      - name: Install Javy (JavaScript to WASM compiler)
+        run: |
+          # Install Javy for compiling JavaScript to WebAssembly
+          curl -L -o javy.tar.gz https://github.com/bytecodealliance/javy/releases/latest/download/javy-x86_64-linux-v2.2.0.tar.gz
+          tar -xzf javy.tar.gz
+          chmod +x javy
+          
+      - name: Build TypeScript functions to WASM
         run: |
           for function_dir in functions-*-js; do
             if [ -d "$function_dir" ]; then
               echo "Building $function_dir"
               cd "$function_dir"
-              if [ -f "package.json" ]; then
-                npm run build
-              fi
+              
+              # Bundle the TypeScript code
+              npx esbuild src/index.ts --bundle --platform=node --target=es2020 --outfile=bundled.js
+              
+              # Compile to WASM using Javy
+              ../javy compile bundled.js -o function.wasm
+              
+              # Create dist directory and move WASM file
+              mkdir -p dist
+              mv function.wasm dist/
+              
               cd ..
             fi
           done
+          
       - name: Install function-runner
         run: |
           # Install from source since binary releases have naming issues
           cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
           # Move to current directory for easier access
           cp ~/.cargo/bin/function-runner .
+          
       - name: Run integration tests
         run: |
           # Create empty JSON input

From 442d06bc868ca9c0b0e1e75a99c178905ca1589e Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 10:47:15 -0400
Subject: [PATCH 8/9] follow function runner pattern

---
 .github/workflows/validate-js-functions.yml | 8 ++++----
 .github/workflows/validate-ts-functions.yml | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index 66953ad7..5c809943 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -28,10 +28,10 @@ jobs:
         run: yarn js-test
       - name: Install Javy (JavaScript to WASM compiler)
         run: |
-          # Install Javy for compiling JavaScript to WebAssembly
-          curl -L -o javy.tar.gz https://github.com/bytecodealliance/javy/releases/latest/download/javy-x86_64-linux-v2.2.0.tar.gz
-          tar -xzf javy.tar.gz
-          chmod +x javy
+          # Install javy from source using cargo
+          cargo install --git https://github.com/bytecodealliance/javy.git --locked javy-cli
+          # Copy to current directory
+          cp ~/.cargo/bin/javy-cli ./javy
           
       - name: Build JavaScript functions to WASM
         run: |
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index adfa14ec..d4c1cf08 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -28,10 +28,10 @@ jobs:
         run: yarn js-test
       - name: Install Javy (JavaScript to WASM compiler)
         run: |
-          # Install Javy for compiling JavaScript to WebAssembly
-          curl -L -o javy.tar.gz https://github.com/bytecodealliance/javy/releases/latest/download/javy-x86_64-linux-v2.2.0.tar.gz
-          tar -xzf javy.tar.gz
-          chmod +x javy
+          # Install javy from source using cargo
+          cargo install --git https://github.com/bytecodealliance/javy.git --locked javy-cli
+          # Copy to current directory
+          cp ~/.cargo/bin/javy-cli ./javy
           
       - name: Build TypeScript functions to WASM
         run: |

From 8838c445f6cd8477a046273a62514480a69afa95 Mon Sep 17 00:00:00 2001
From: Mehdi Salemi <mehdi.salemi@shopify.com>
Date: Tue, 15 Jul 2025 13:42:14 -0400
Subject: [PATCH 9/9] refactor

---
 .github/workflows/test-function-runner.yml    | 74 +++++++++++++++++++
 .github/workflows/validate-js-functions.yml   | 69 -----------------
 .github/workflows/validate-rust-functions.yml | 43 ++---------
 .github/workflows/validate-ts-functions.yml   | 69 -----------------
 Cargo.toml                                    |  7 ++
 5 files changed, 86 insertions(+), 176 deletions(-)
 create mode 100644 .github/workflows/test-function-runner.yml

diff --git a/.github/workflows/test-function-runner.yml b/.github/workflows/test-function-runner.yml
new file mode 100644
index 00000000..63c11235
--- /dev/null
+++ b/.github/workflows/test-function-runner.yml
@@ -0,0 +1,74 @@
+name: Test Function Runner
+
+on:
+  pull_request:
+    branches: ["main"]
+    paths:
+      - "functions-*-rs/**"
+      - ".github/workflows/test-function-runner.yml"
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test-function-runner:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      
+      - name: Step 1 - Install function-runner
+        run: |
+          echo "Installing function-runner..."
+          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
+          
+      - name: Step 2 - Test function-runner installation
+        run: |
+          echo "Testing function-runner installation..."
+          function-runner --help
+          
+      - name: Step 3 - Show available functions
+        run: |
+          echo "Available Rust functions:"
+          ls -la functions-*-rs/ | head -5
+          
+      - name: Step 4 - Expand liquid templates
+        run: |
+          echo "Expanding liquid templates..."
+          yarn
+          CI=1 yarn expand-liquid rust
+          
+      - name: Step 5 - Build one function
+        run: |
+          echo "Building functions-cart-checkout-validation-rs..."
+          cd functions-cart-checkout-validation-rs
+          cargo build --target wasm32-wasip1 --profile=wasm --features trampoline
+          
+      - name: Step 6 - Post-process with wasm-opt
+        run: |
+          echo "Installing wasm-opt..."
+          cargo install wasm-opt --locked
+          echo "Optimizing WASM..."
+          wasm_file=$(find target/wasm32-wasip1/wasm -name "*.wasm" | head -1)
+          if [ -f "$wasm_file" ]; then
+            wasm-opt --enable-bulk-memory --strip-debug "$wasm_file" -o "${wasm_file%.wasm}-optimized.wasm"
+          fi
+          
+      - name: Step 7 - Find built WASM file
+        run: |
+          echo "Looking for built WASM file..."
+          find . -name "*.wasm" -type f
+          echo "Specifically looking in target/wasm32-wasip1/wasm/:"
+          ls -la target/wasm32-wasip1/wasm/ || echo "wasm directory not found"
+          
+      - name: Step 8 - Test with empty input
+        run: |
+          echo "Testing with empty input..."
+          echo '{}' > empty_input.json
+          wasm_file=$(find . -name "*.wasm" -type f | head -1)
+          if [ -f "$wasm_file" ]; then
+            echo "Found WASM file: $wasm_file"
+            echo "Running function-runner..."
+            function-runner -f "$wasm_file" -i empty_input.json || echo "Function runner failed, continuing..."
+          else
+            echo "No WASM file found"
+          fi
\ No newline at end of file
diff --git a/.github/workflows/validate-js-functions.yml b/.github/workflows/validate-js-functions.yml
index 5c809943..059bc801 100644
--- a/.github/workflows/validate-js-functions.yml
+++ b/.github/workflows/validate-js-functions.yml
@@ -26,72 +26,3 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Install Javy (JavaScript to WASM compiler)
-        run: |
-          # Install javy from source using cargo
-          cargo install --git https://github.com/bytecodealliance/javy.git --locked javy-cli
-          # Copy to current directory
-          cp ~/.cargo/bin/javy-cli ./javy
-          
-      - name: Build JavaScript functions to WASM
-        run: |
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Building $function_dir"
-              cd "$function_dir"
-              
-              # Bundle the JavaScript code
-              npx esbuild src/index.ts --bundle --platform=node --target=es2020 --outfile=bundled.js
-              
-              # Compile to WASM using Javy
-              ../javy compile bundled.js -o function.wasm
-              
-              # Create dist directory and move WASM file
-              mkdir -p dist
-              mv function.wasm dist/
-              
-              cd ..
-            fi
-          done
-          
-      - name: Install function-runner
-        run: |
-          # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
-          # Move to current directory for easier access
-          cp ~/.cargo/bin/function-runner .
-          
-      - name: Run integration tests
-        run: |
-          # Create empty JSON input
-          echo '{}' > empty_input.json
-          
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Testing $function_dir"
-              cd "$function_dir"
-              
-              # Find the built wasm file
-              wasm_file=$(find . -name "*.wasm" | head -1)
-              
-              if [ -f "$wasm_file" ]; then
-                echo "Running integration test for $function_dir"
-                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
-                
-                # Validate output is valid JSON
-                if jq empty actual_output.json 2>/dev/null; then
-                  echo "✅ $function_dir produced valid JSON output"
-                  cat actual_output.json
-                else
-                  echo "❌ $function_dir produced invalid JSON output"
-                  cat actual_output.json
-                  exit 1
-                fi
-              else
-                echo "❌ No wasm file found for $function_dir"
-                exit 1
-              fi
-              
-              cd ..
-            fi
-          done
diff --git a/.github/workflows/validate-rust-functions.yml b/.github/workflows/validate-rust-functions.yml
index 2c35458c..8b908d33 100644
--- a/.github/workflows/validate-rust-functions.yml
+++ b/.github/workflows/validate-rust-functions.yml
@@ -29,44 +29,11 @@ jobs:
       - name: Run tests
         run: cargo test
       - name: Build with wasm32-wasip1 target
-        run: cargo build --release --target wasm32-wasip1
-      - name: Install function-runner
         run: |
-          # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
-          # Move to current directory for easier access
-          cp ~/.cargo/bin/function-runner .
-      - name: Run integration tests
-        run: |
-          # Create empty JSON input
-          echo '{}' > empty_input.json
-          
-          for function_dir in functions-*-rs; do
-            if [ -d "$function_dir" ]; then
-              echo "Testing $function_dir"
-              cd "$function_dir"
-              
-              # Find the built wasm file (look in root target directory)
-              wasm_file=$(find ../target/wasm32-wasip1/release -name "*.wasm" | head -1)
-              
-              if [ -f "$wasm_file" ]; then
-                echo "Running integration test for $function_dir"
-                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
-                
-                # Validate output is valid JSON
-                if jq empty actual_output.json 2>/dev/null; then
-                  echo "✅ $function_dir produced valid JSON output"
-                  cat actual_output.json
-                else
-                  echo "❌ $function_dir produced invalid JSON output"
-                  cat actual_output.json
-                  exit 1
-                fi
-              else
-                echo "❌ No wasm file found for $function_dir"
-                exit 1
-              fi
-              
-              cd ..
+          for dir in functions-*-rs; do
+            if [ -d "$dir" ]; then
+              package_name=$(grep "name = " "$dir/Cargo.toml" | cut -d'"' -f2)
+              echo "Building package: $package_name"
+              cargo build --release --target wasm32-wasip1 -p "$package_name"
             fi
           done
diff --git a/.github/workflows/validate-ts-functions.yml b/.github/workflows/validate-ts-functions.yml
index d4c1cf08..8d362b10 100644
--- a/.github/workflows/validate-ts-functions.yml
+++ b/.github/workflows/validate-ts-functions.yml
@@ -26,72 +26,3 @@ jobs:
         run: yarn js-typegen
       - name: Test
         run: yarn js-test
-      - name: Install Javy (JavaScript to WASM compiler)
-        run: |
-          # Install javy from source using cargo
-          cargo install --git https://github.com/bytecodealliance/javy.git --locked javy-cli
-          # Copy to current directory
-          cp ~/.cargo/bin/javy-cli ./javy
-          
-      - name: Build TypeScript functions to WASM
-        run: |
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Building $function_dir"
-              cd "$function_dir"
-              
-              # Bundle the TypeScript code
-              npx esbuild src/index.ts --bundle --platform=node --target=es2020 --outfile=bundled.js
-              
-              # Compile to WASM using Javy
-              ../javy compile bundled.js -o function.wasm
-              
-              # Create dist directory and move WASM file
-              mkdir -p dist
-              mv function.wasm dist/
-              
-              cd ..
-            fi
-          done
-          
-      - name: Install function-runner
-        run: |
-          # Install from source since binary releases have naming issues
-          cargo install --git https://github.com/Shopify/function-runner.git function-runner --locked
-          # Move to current directory for easier access
-          cp ~/.cargo/bin/function-runner .
-          
-      - name: Run integration tests
-        run: |
-          # Create empty JSON input
-          echo '{}' > empty_input.json
-          
-          for function_dir in functions-*-js; do
-            if [ -d "$function_dir" ]; then
-              echo "Testing $function_dir"
-              cd "$function_dir"
-              
-              # Find the built wasm file
-              wasm_file=$(find . -name "*.wasm" | head -1)
-              
-              if [ -f "$wasm_file" ]; then
-                echo "Running integration test for $function_dir"
-                ../function-runner -f "$wasm_file" -i "../empty_input.json" > actual_output.json
-                
-                # Validate output is valid JSON
-                if jq empty actual_output.json 2>/dev/null; then
-                  echo "✅ $function_dir produced valid JSON output"
-                  cat actual_output.json
-                else
-                  echo "❌ $function_dir produced invalid JSON output"
-                  cat actual_output.json
-                  exit 1
-                fi
-              else
-                echo "❌ No wasm file found for $function_dir"
-                exit 1
-              fi
-              
-              cd ..
-            fi
-          done
diff --git a/Cargo.toml b/Cargo.toml
index 41626cb5..b44071b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,3 +2,10 @@
 members = [
     "functions-*-rs"
 ]
+
+[profile.wasm]
+inherits = "release"
+lto = true
+opt-level = 'z'
+strip = true
+panic = "abort"