fix names with esbuild (#2359)

package.json

@@ -70,7 +70,7 @@
     "docs"
   ],
   "scripts": {
-    "build:node": "npx esbuild@0.19.4 index-fetch.js --bundle --platform=node --outfile=undici-fetch.js --define:esbuildDetection=1",
+    "build:node": "npx esbuild@0.19.4 index-fetch.js --bundle --platform=node --outfile=undici-fetch.js --define:esbuildDetection=1 --keep-names",
     "prebuild:wasm": "node build/wasm.js --prebuild",
     "build:wasm": "node build/wasm.js --docker",
     "lint": "standard | snazzy",

test/fetch/bundle.js

@@ -0,0 +1,20 @@
+'use strict'
+
+const { test } = require('tap')
+const { Response, Request, FormData, Headers } = require('../../undici-fetch')
+
+test('bundle sets constructor.name and .name properly', (t) => {
+  t.equal(new Response().constructor.name, 'Response')
+  t.equal(Response.name, 'Response')
+
+  t.equal(new Request('http://a').constructor.name, 'Request')
+  t.equal(Request.name, 'Request')
+
+  t.equal(new Headers().constructor.name, 'Headers')
+  t.equal(Headers.name, 'Headers')
+
+  t.equal(new FormData().constructor.name, 'FormData')
+  t.equal(FormData.name, 'FormData')
+
+  t.end()
+})