fix: check if executablePath exists

packages/puppeteer-core/src/node/ProductLauncher.ts

@@ -98,6 +98,12 @@ export abstract class ProductLauncher {
 
     const launchArgs = await this.computeLaunchArguments(options);
 
+    if (!existsSync(launchArgs.executablePath)) {
+      throw new Error(
+        `Browser was not found at the configured executablePath (${launchArgs.executablePath})`
+      );
+    }
+
     const usePipe = launchArgs.args.includes('--remote-debugging-pipe');
 
     const onProcessExit = async () => {

test/installation/assets/puppeteer-core/launch.js

@@ -13,7 +13,11 @@ import puppeteer from 'puppeteer-core';
       executablePath: 'node',
     });
   } catch (error) {
-    if (error.message.includes('Failed to launch the browser process')) {
+    if (
+      error.message.includes(
+        'Browser was not found at the configured executablePath (node)'
+      )
+    ) {
       process.exit(0);
     }
     console.error(error);

test/src/launcher.spec.ts

@@ -190,7 +190,9 @@ describe('Launcher specs', function () {
         }).catch(error => {
           return (waitError = error);
         });
-        expect(waitError.message).toContain('Failed to launch');
+        expect(waitError.message).toBe(
+          'Browser was not found at the configured executablePath (random-invalid-path)'
+        );
       });
       it('userDataDir option', async () => {
         const userDataDir = await mkdtemp(TMP_FOLDER);
@@ -615,6 +617,20 @@ describe('Launcher specs', function () {
         });
         expect(error.message).toContain('either pipe or debugging port');
       });
+
+      it('throws an error if executable path is not valid with pipe=true', async () => {
+        const options = {
+          executablePath: '/tmp/does-not-exist',
+          pipe: true,
+        };
+        let error!: Error;
+        await launch(options).catch(error_ => {
+          return (error = error_);
+        });
+        expect(error.message).toContain(
+          'Browser was not found at the configured executablePath (/tmp/does-not-exist)'
+        );
+      });
     });
 
     describe('Puppeteer.launch', function () {