From cd07553b59badff0f9987f7c53c60e791a93403f Mon Sep 17 00:00:00 2001
From: Paulus Schoutsen <balloob@gmail.com>
Date: Mon, 23 Nov 2020 10:21:45 +0100
Subject: [PATCH] Upgrade Rollup babel plugin (#7773)

---
 build-scripts/rollup.js |  3 ++-
 package.json            |  2 +-
 yarn.lock               | 19 ++++++++++++++++++-
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/build-scripts/rollup.js b/build-scripts/rollup.js
index 3757f25866..8cd680361d 100644
--- a/build-scripts/rollup.js
+++ b/build-scripts/rollup.js
@@ -3,7 +3,7 @@ const path = require("path");
 const commonjs = require("@rollup/plugin-commonjs");
 const resolve = require("@rollup/plugin-node-resolve");
 const json = require("@rollup/plugin-json");
-const babel = require("rollup-plugin-babel");
+const babel = require("@rollup/plugin-babel").babel;
 const replace = require("@rollup/plugin-replace");
 const visualizer = require("rollup-plugin-visualizer");
 const { string } = require("rollup-plugin-string");
@@ -61,6 +61,7 @@ const createRollupConfig = ({
           ...bundle.babelOptions({ latestBuild }),
           extensions,
           exclude: bundle.babelExclude(),
+          babelHelpers: "bundled",
         }),
         string({
           // Import certain extensions as strings
diff --git a/package.json b/package.json
index d8dc5f2b92..28367bf4f0 100644
--- a/package.json
+++ b/package.json
@@ -141,6 +141,7 @@
     "@babel/plugin-syntax-import-meta": "^7.10.4",
     "@babel/preset-env": "^7.11.5",
     "@babel/preset-typescript": "^7.10.4",
+    "@rollup/plugin-babel": "^5.2.1",
     "@rollup/plugin-commonjs": "^11.1.0",
     "@rollup/plugin-json": "^4.0.3",
     "@rollup/plugin-node-resolve": "^7.1.3",
@@ -195,7 +196,6 @@
     "raw-loader": "^2.0.0",
     "require-dir": "^1.2.0",
     "rollup": "^2.8.2",
-    "rollup-plugin-babel": "^4.4.0",
     "rollup-plugin-string": "^3.0.0",
     "rollup-plugin-terser": "^5.3.0",
     "rollup-plugin-visualizer": "^4.0.4",
diff --git a/yarn.lock b/yarn.lock
index 128ab6a8a3..9b9363e598 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3023,6 +3023,14 @@
   dependencies:
     "@webcomponents/shadycss" "^1.5.2"
 
+"@rollup/plugin-babel@^5.2.1":
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/@rollup/plugin-babel/-/plugin-babel-5.2.1.tgz#20fc8f8864dc0eaa1c5578408459606808f72924"
+  integrity sha512-Jd7oqFR2dzZJ3NWANDyBjwTtX/lYbZpVcmkHrfQcpvawHs9E4c0nYk5U2mfZ6I/DZcIvy506KZJi54XK/jxH7A==
+  dependencies:
+    "@babel/helper-module-imports" "^7.10.4"
+    "@rollup/pluginutils" "^3.1.0"
+
 "@rollup/plugin-commonjs@^11.1.0":
   version "11.1.0"
   resolved "https://registry.yarnpkg.com/@rollup/plugin-commonjs/-/plugin-commonjs-11.1.0.tgz#60636c7a722f54b41e419e1709df05c7234557ef"
@@ -3071,6 +3079,15 @@
     estree-walker "^1.0.1"
     picomatch "^2.2.2"
 
+"@rollup/pluginutils@^3.1.0":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@rollup/pluginutils/-/pluginutils-3.1.0.tgz#706b4524ee6dc8b103b3c995533e5ad680c02b9b"
+  integrity sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==
+  dependencies:
+    "@types/estree" "0.0.39"
+    estree-walker "^1.0.1"
+    picomatch "^2.2.2"
+
 "@samverschueren/stream-to-observable@^0.3.0":
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/@samverschueren/stream-to-observable/-/stream-to-observable-0.3.0.tgz#ecdf48d532c58ea477acfcab80348424f8d0662f"
@@ -11079,7 +11096,7 @@ roboto-fontface@^0.10.0:
   resolved "https://registry.yarnpkg.com/roboto-fontface/-/roboto-fontface-0.10.0.tgz#7eee40cfa18b1f7e4e605eaf1a2740afb6fd71b0"
   integrity sha512-OlwfYEgA2RdboZohpldlvJ1xngOins5d7ejqnIBWr9KaMxsnBqotpptRXTyfNRLnFpqzX6sTDt+X+a+6udnU8g==
 
-rollup-plugin-babel@^4.3.3, rollup-plugin-babel@^4.4.0:
+rollup-plugin-babel@^4.3.3:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-4.4.0.tgz#d15bd259466a9d1accbdb2fe2fff17c52d030acb"
   integrity sha512-Lek/TYp1+7g7I+uMfJnnSJ7YWoD58ajo6Oarhlex7lvUce+RCKRuGRSgztDO3/MF/PuGKmUL5iTHKf208UNszw==