fix(gatsby): infer shape of warning object (#31489) (#31931)

Co-authored-by: Vladimir Razuvaev <[email protected]> Co-authored-by: gatsbybot <[email protected]> (cherry picked from commit 96dc88a) Co-authored-by: Kyle Mathews <[email protected]>
gatsbyjs · Jun 15, 2021 · 559c5f2 · 559c5f2
1 parent 3e21c9f
commit 559c5f2
Showing 1 changed file with 10 additions and 3 deletions.
diff --git a/packages/gatsby/src/utils/webpack-error-utils.ts b/packages/gatsby/src/utils/webpack-error-utils.ts
@@ -148,9 +148,16 @@ export const reportWebpackWarnings = (
   warnings: StatsCompilation["warnings"] = [],
   reporter: Reporter
 ): void => {
-  const warningMessages = warnings.map(
-    warning => `${warning.moduleName}\n\n${warning.message}`
-  )
+  let warningMessages: Array<string> = []
+  if (typeof warnings[0] === `string`) {
+    warningMessages = (warnings as unknown) as Array<string>
+  } else if (warnings[0]?.message && warnings[0]?.moduleName) {
+    warningMessages = warnings.map(
+      warning => `${warning.moduleName}\n\n${warning.message}`
+    )
+  } else if (warnings[0]?.message) {
+    warningMessages = warnings.map(warning => warning.message)
+  }
 
   formatWebpackMessages({
     errors: [],