Fix CI

Author: surma

rollup.lib.js

@@ -26,7 +26,7 @@ const libBundles = [
   {
     input: "lib/lib.js",
     output: {
-      file: pkg.main,
+      file: pkg.module.replace("esm", "cjs"),
       format: "cjs",
       sourcemap: sourcemapOption
     },

test/test-runner.js

@@ -77,7 +77,7 @@ async function getNumFailingTestsInPuppeteer() {
   const testFiles = await glob("./tests/**/test.js");
   const browser = await pptr.launch({
     devtools: OPEN_DEVTOOLS,
-    ...(process.env.PUPPETEER_EXECUTABLE_PATH.length > 0
+    ...(process.env.PUPPETEER_EXECUTABLE_PATH?.length > 0
       ? { executablePath: process.env.PUPPETEER_EXECUTABLE_PATH }
       : {})
   });