diff --git a/examples/vanilla-nyc/.gitignore b/examples/vanilla-nyc/.gitignore
new file mode 100644
index 00000000..3334e44b
--- /dev/null
+++ b/examples/vanilla-nyc/.gitignore
@@ -0,0 +1,2 @@
+.nyc_output
+package-lock.json
diff --git a/examples/vanilla-nyc/main.js b/examples/vanilla-nyc/main.js
new file mode 100644
index 00000000..7b9cf900
--- /dev/null
+++ b/examples/vanilla-nyc/main.js
@@ -0,0 +1,10 @@
+function test(num) {
+  if (num > 0){
+    return 1
+  } else {
+    return 2
+  }
+}
+
+console.log(test(1))
+
diff --git a/examples/vanilla-nyc/package.json b/examples/vanilla-nyc/package.json
new file mode 100644
index 00000000..4db25342
--- /dev/null
+++ b/examples/vanilla-nyc/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "vanilla-nyc",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "nyc node main.js && nyc report --reporter=html"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "nyc": "^17.1.0"
+  }
+}
diff --git a/tools/canyon-playground/.gitignore b/tools/canyon-playground/.gitignore
new file mode 100755
index 00000000..e0461513
--- /dev/null
+++ b/tools/canyon-playground/.gitignore
@@ -0,0 +1,45 @@
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# IDE / Editor
+.idea/*
+!.idea/rcb-settings.xml
+
+# PNPM
+.pnpm-store
+
+
+pnpm-lock.yaml
+
+.env
+
+db/sql
+
+
+coverage
+
+schema.gql
+
+target/
+Cargo.lock
diff --git a/tools/canyon-playground/cov.json b/tools/canyon-playground/cov.json
new file mode 100644
index 00000000..e69de29b
diff --git a/tools/canyon-playground/gen-report.js b/tools/canyon-playground/gen-report.js
new file mode 100644
index 00000000..e69de29b