close #939

patches/express+4.18.2.patch

@@ -0,0 +1,62 @@
+diff --git a/node_modules/express/lib/response.js b/node_modules/express/lib/response.js
+index fede486..e3d868e 100644
+--- a/node_modules/express/lib/response.js
++++ b/node_modules/express/lib/response.js
+@@ -27,7 +27,6 @@ var merge = require('utils-merge');
+ var sign = require('cookie-signature').sign;
+ var normalizeType = require('./utils').normalizeType;
+ var normalizeTypes = require('./utils').normalizeTypes;
+-var setCharset = require('./utils').setCharset;
+ var cookie = require('cookie');
+ var send = require('send');
+ var extname = path.extname;
+@@ -49,13 +48,6 @@ var res = Object.create(http.ServerResponse.prototype)
+ 
+ module.exports = res
+ 
+-/**
+- * Module variables.
+- * @private
+- */
+-
+-var charsetRegExp = /;\s*charset\s*=/;
+-
+ /**
+  * Set status `code`.
+  *
+@@ -164,17 +156,6 @@ res.send = function send(body) {
+       break;
+   }
+ 
+-  // write strings in utf-8
+-  if (typeof chunk === 'string') {
+-    encoding = 'utf8';
+-    type = this.get('Content-Type');
+-
+-    // reflect this in content-type
+-    if (typeof type === 'string') {
+-      this.set('Content-Type', setCharset(type, 'utf-8'));
+-    }
+-  }
+-
+   // determine if ETag should be generated
+   var etagFn = app.get('etag fn')
+   var generateETag = !this.get('ETag') && typeof etagFn === 'function'
+@@ -780,17 +761,6 @@ res.header = function header(field, val) {
+       ? val.map(String)
+       : String(val);
+ 
+-    // add charset to content-type
+-    if (field.toLowerCase() === 'content-type') {
+-      if (Array.isArray(value)) {
+-        throw new TypeError('Content-Type cannot be set to an Array');
+-      }
+-      if (!charsetRegExp.test(value)) {
+-        var charset = mime.charsets.lookup(value.split(';')[0]);
+-        if (charset) value += '; charset=' + charset.toLowerCase();
+-      }
+-    }
+-
+     this.setHeader(field, value);
+   } else {
+     for (var key in field) {