test: ignore vendor.js coverage

Author: antongolub

package.json

@@ -44,11 +44,11 @@
     "build": "npm run build:js && npm run build:dts",
     "build:check": "tsc",
     "build:js": "node scripts/build-js.mjs --format=esm --entry='src/*' && npm run build:vendor",
-    "build:vendor": "node scripts/build-js.mjs --format=esm --entry='src/vendor.ts' --bundle=all --banner",
+    "build:vendor": "node scripts/build-js.mjs --format=esm --entry=src/vendor.ts --bundle=all --banner",
     "build:dts": "tsc --project tsconfig.prod.json && node scripts/build-dts.mjs",
     "test": "npm run build && node ./test/all.test.js",
     "test:types": "tsd",
-    "coverage": "c8 --check-coverage npm test",
+    "coverage": "c8 -x build/vendor.js --check-coverage npm test",
     "mutation": "stryker run",
     "circular": "madge --circular src/*",
     "version": "cat package.json | fx .version"