From b2b96e0b150b56d47fbe5ec1ef7727a13e86a899 Mon Sep 17 00:00:00 2001
From: Daniel Tschinder <daniel@tschinder.de>
Date: Thu, 7 Mar 2019 15:44:36 -0800
Subject: [PATCH] Add WarningsToErrorsPlugin to webpack to avoid missing build
 problems on CI (#9647)

---
 package.json          | 1 +
 scripts/gulp-tasks.js | 2 ++
 yarn.lock             | 5 +++++
 3 files changed, 8 insertions(+)

diff --git a/package.json b/package.json
index 642b2c72f5d8..df8daa79ea7a 100644
--- a/package.json
+++ b/package.json
@@ -66,6 +66,7 @@
     "through2": "^2.0.0",
     "vinyl-buffer": "^1.0.1",
     "vinyl-source-stream": "^2.0.0",
+    "warnings-to-errors-webpack-plugin": "^2.0.0",
     "webpack": "^3.4.1",
     "webpack-dependency-suite": "^2.4.4",
     "webpack-stream": "^4.0.0"
diff --git a/scripts/gulp-tasks.js b/scripts/gulp-tasks.js
index 6b52205342df..73c1f7db2e3f 100644
--- a/scripts/gulp-tasks.js
+++ b/scripts/gulp-tasks.js
@@ -20,6 +20,7 @@ const rename = require("gulp-rename");
 const webpack = require("webpack");
 const { RootMostResolvePlugin } = require("webpack-dependency-suite");
 const DuplicatePackageCheckerPlugin = require("duplicate-package-checker-webpack-plugin");
+const WarningsToErrorsPlugin = require("warnings-to-errors-webpack-plugin");
 const webpackStream = require("webpack-stream");
 const uglify = require("gulp-uglify");
 
@@ -62,6 +63,7 @@ function webpackBuild(opts) {
       libraryTarget: "umd",
     },
     plugins: [
+      new WarningsToErrorsPlugin(),
       new DuplicatePackageCheckerPlugin({
         exclude(instance) {
           return instance.name === "semver";
diff --git a/yarn.lock b/yarn.lock
index 834058076f96..d81ac0996a5b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9047,6 +9047,11 @@ walker@~1.0.5:
   dependencies:
     makeerror "1.0.x"
 
+warnings-to-errors-webpack-plugin@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/warnings-to-errors-webpack-plugin/-/warnings-to-errors-webpack-plugin-2.0.0.tgz#1ce862fa845c77a3c21bb68c839efaa7ebbdb9fb"
+  integrity sha512-0Girb3F5xc5U1TpYMiLDcie5oB+Ko2EuujOYyS3aXpKS4Yp264WkIuJ+0vF8wnmkDkmZAOBxahBedEL0mLjHQA==
+
 watch@~0.18.0:
   version "0.18.0"
   resolved "https://registry.yarnpkg.com/watch/-/watch-0.18.0.tgz#28095476c6df7c90c963138990c0a5423eb4b986"