From 7c411470bfb80d737d1377cc82c9e68868f25aa0 Mon Sep 17 00:00:00 2001
From: Pan <panfree23@gmail.com>
Date: Fri, 27 Jul 2018 15:24:16 +0800
Subject: [PATCH] fix: avoid hash collisions

---
 packages/@vue/cli-service/lib/config/app.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/@vue/cli-service/lib/config/app.js b/packages/@vue/cli-service/lib/config/app.js
index fc9a9c5ea0..41c24fb0ac 100644
--- a/packages/@vue/cli-service/lib/config/app.js
+++ b/packages/@vue/cli-service/lib/config/app.js
@@ -103,6 +103,7 @@ module.exports = (api, options) => {
               const joinedHash = hash(modules.map(m => m.id).join('_'))
               let len = nameLength
               while (seen.has(joinedHash.substr(0, len))) len++
+              seen.add(joinedHash.substr(0, len))
               return `chunk-${joinedHash.substr(0, len)}`
             } else {
               return modules[0].id