From 5da717190381f57baa671638d340c6585da7df86 Mon Sep 17 00:00:00 2001
From: Max Falk <gmdfalk@gmail.com>
Date: Sun, 6 Jun 2021 21:16:01 +0200
Subject: [PATCH] fix(cli): fix TypeError when formatting error messages

error.errors can be undefined which will lead to a TypeError, swallowing the actual error message in the process

Signed-off-by: Max Falk <gmdfalk@gmail.com>
---
 packages/cli/src/lib/builder/packager.ts | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/packages/cli/src/lib/builder/packager.ts b/packages/cli/src/lib/builder/packager.ts
index ed76e23df3..2c85ec3df3 100644
--- a/packages/cli/src/lib/builder/packager.ts
+++ b/packages/cli/src/lib/builder/packager.ts
@@ -28,15 +28,17 @@ function formatErrorMessage(error: any) {
   if (error.code === 'PLUGIN_ERROR') {
     if (error.plugin === 'esbuild') {
       msg += `${error.message}\n\n`;
-      for (const { text, location } of error.errors) {
-        const { line, column } = location;
-        const path = relativePath(paths.targetDir, error.id);
-        const loc = chalk.cyan(`${path}:${line}:${column}`);
+      if (error.errors) {
+        for (const { text, location } of error.errors) {
+          const { line, column } = location;
+          const path = relativePath(paths.targetDir, error.id);
+          const loc = chalk.cyan(`${path}:${line}:${column}`);
 
-        if (text === 'Unexpected "<"' && error.id.endsWith('.js')) {
-          msg += `${loc}: ${text}, JavaScript files with JSX should use a .jsx extension`;
-        } else {
-          msg += `${loc}: ${text}`;
+          if (text === 'Unexpected "<"' && error.id.endsWith('.js')) {
+            msg += `${loc}: ${text}, JavaScript files with JSX should use a .jsx extension`;
+          } else {
+            msg += `${loc}: ${text}`;
+          }
         }
       }
     } else {