Exclude lib/snippets from code coverage

Author: skadisch

package.json

@@ -3,7 +3,7 @@
   "main": "lib/index.ts",
   "scripts": {
     "build": "rm -rf dist/ && deno-node-build --root . --out dist/ --entry lib/index.ts",
-    "test": "c8 --reporter lcov --reporter html --reporter text mocha test/**/*.ts",
+    "test": "c8 --reporter lcov --reporter html --reporter text --exclude lib/snippets mocha test/**/*.ts",
     "lint": "eslint ."
   },
   "devDependencies": {