chore: install “polka/send”

site/package-lock.json

@@ -1360,6 +1360,11 @@
         }
       }
     },
+    "@polka/send": {
+      "version": "1.0.0-next.1",
+      "resolved": "https://registry.npmjs.org/@polka/send/-/send-1.0.0-next.1.tgz",
+      "integrity": "sha512-HCPYOmuP3jdNd/tXO0bsOi5HUAGx0Pcou3levCrflT6KjuFNqYdNoqMjjkrhljDzLMlTcWXCUXUoLA7h3twTJg=="
+    },
     "@polka/url": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/@polka/url/-/url-0.5.0.tgz",

site/package.json

@@ -14,6 +14,7 @@
     "testsrc": "mocha -r esm test/**"
   },
   "dependencies": {
+    "@polka/send": "^1.0.0-next.1",
     "codemirror": "^5.44.0",
     "compression": "^1.7.3",
     "devalue": "^1.1.0",