test: Switch from leaked-handles to wtfnode (#2604)

See my comments at
https://github.com/cdr/code-server/pull/2563#issuecomment-763394741

package.json

@@ -47,6 +47,7 @@
     "@types/tar-fs": "^2.0.0",
     "@types/tar-stream": "^2.1.0",
     "@types/ws": "^7.2.6",
+    "@types/wtfnode": "^0.7.0",
     "@typescript-eslint/eslint-plugin": "^4.7.0",
     "@typescript-eslint/parser": "^4.7.0",
     "doctoc": "^1.4.0",
@@ -61,6 +62,7 @@
     "stylelint": "^13.0.0",
     "stylelint-config-recommended": "^3.0.0",
     "ts-node": "^9.0.0",
+    "wtfnode": "^0.8.4",
     "typescript": "^4.1.3"
   },
   "resolutions": {

test/socket.test.ts

@@ -1,14 +1,16 @@
 import { field, logger } from "@coder/logger"
 import * as fs from "fs-extra"
-import "leaked-handles"
 import * as net from "net"
 import * as path from "path"
 import * as tls from "tls"
 import { Emitter } from "../src/common/emitter"
 import { SocketProxyProvider } from "../src/node/socket"
 import { generateCertificate, tmpdir } from "../src/node/util"
+import * as wtfnode from "./wtfnode"
 
 describe("SocketProxyProvider", () => {
+  wtfnode.setup()
+
   const provider = new SocketProxyProvider()
 
   const onServerError = new Emitter<{ event: string; error: Error }>()

test/wtfnode.ts

@@ -0,0 +1,19 @@
+import * as wtfnode from "wtfnode"
+
+let active = false
+
+export function setup(): void {
+  if (active) {
+    return
+  }
+  active = true
+
+  const interval = 5000
+  const wtfnodeDump = () => {
+    wtfnode.dump()
+    const t = setTimeout(wtfnodeDump, interval)
+    t.unref()
+  }
+  const t = setTimeout(wtfnodeDump, interval)
+  t.unref()
+}

yarn.lock

@@ -1201,6 +1201,11 @@
   dependencies:
     "@types/node" "*"
 
+"@types/wtfnode@^0.7.0":
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/@types/wtfnode/-/wtfnode-0.7.0.tgz#e5d9c675bccc2f786830ffa40ffe8865f92057d9"
+  integrity sha512-kdBHgE9+M1Os7UqWZtiLhKye5reFl8cPBYyCsP2fatwZRz7F7GdIxIHZ20Kkc0hYBfbXE+lzPOTUU1I0qgjtHA==
+
 "@typescript-eslint/eslint-plugin@^4.7.0":
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.7.0.tgz#85c9bbda00c0cb604d3c241f7bc7fb171a2d3479"
@@ -8022,6 +8027,11 @@ ws@^7.2.0:
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.1.tgz#d0547bf67f7ce4f12a72dfe31262c68d7dc551c8"
   integrity sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA==
 
+wtfnode@^0.8.4:
+  version "0.8.4"
+  resolved "https://registry.yarnpkg.com/wtfnode/-/wtfnode-0.8.4.tgz#91ecf78a40ce222a73a063f26d72bea52357efcc"
+  integrity sha512-64GEKtMt/MUBuAm+8kHqP74ojjafzu00aT0JKsmkIwYmjRQ/odO0yhbzKLm+Z9v1gMla+8dwITRKzTAlHsB+Og==
+
 x-is-string@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/x-is-string/-/x-is-string-0.1.0.tgz#474b50865af3a49a9c4657f05acd145458f77d82"