From 461da0ebccb0dd0c87962c0cb108c9ffb26714da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Fri, 29 Nov 2019 14:17:53 -0500
Subject: [PATCH] chore: dedupe some popular dependencies

---
 Gulpfile.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Gulpfile.js b/Gulpfile.js
index 2fba31e48a45..b095c988fec5 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -167,6 +167,18 @@ function buildRollup(packages) {
               rollupNodeResolve({
                 browser: nodeResolveBrowser,
                 preferBuiltins: true,
+                //todo: When Yarn workspaces is enabled, remove `dedupe` option
+                dedupe(importee) {
+                  return (
+                    importee.startsWith("lodash/") ||
+                    [
+                      "babel-plugin-dynamic-import-node/utils",
+                      "esutils",
+                      "semver",
+                      "source-map",
+                    ].includes(importee)
+                  );
+                },
               }),
               rollupCommonJs({
                 include: [/node_modules/, "packages/babel-preset-env/data/**"],