From 07331335108e3e17a6bb104a35386df9f609596c Mon Sep 17 00:00:00 2001
From: Hex <hex@codeigniter.org.cn>
Date: Wed, 29 Jul 2020 17:01:21 +0800
Subject: [PATCH] fix issue #1872

---
 package.json   | 1 +
 tasks/build.js | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 07cf5ddf..d57fb583 100644
--- a/package.json
+++ b/package.json
@@ -60,6 +60,7 @@
     "gulp-filter": "^6.0.0",
     "gulp-header": "^2.0.9",
     "gulp-hub": "^4.2.0",
+    "gulp-if": "^3.0.0",
     "gulp-imagemin": "^7.1.0",
     "gulp-open": "^3.0.1",
     "gulp-plumber": "^1.2.1",
diff --git a/tasks/build.js b/tasks/build.js
index 9f1efd4f..c9709060 100644
--- a/tasks/build.js
+++ b/tasks/build.js
@@ -30,6 +30,7 @@ const plumber = require('gulp-plumber');
 const size = require('gulp-size');
 const sourcemaps = require('gulp-sourcemaps');
 const browserSync = require('browser-sync').create();
+const gulpIf = require('gulp-if');
 // Configs
 const build = require('../build.json');
 // Info from package
@@ -128,7 +129,7 @@ Object.entries(build.js).forEach(([filename, entry]) => {
             },
           ),
         )
-        .pipe(header('typeof navigator === "object" && ')) // "Support" SSR (#935)
+        .pipe(gulpIf(() => extension !== 'mjs', header('typeof navigator === "object" && '))) // "Support" SSR (#935)
         .pipe(
           rename({
             extname: `.${extension}`,