@cloudflare/wrangler postinstall script does not exit


I have to force exit, and the binary is not linked.

And I modified the script
```js
#!/usr/bin/env node

const why = require('why-is-node-running')
const { install } = require("./binary");

install().then(() => {
setInterval(() => {
console.log('-------');
why()
}, 1000)
})
```

And logs as
```txt
$ node ./install-wrangler.js
Downloading release https://workers.cloudflare.com/get-npm-wrangler-binary/1.7.0/x86_64-apple-darwin
wrangler has been installed!
-------
There are 10 handle(s) keeping the process running

# TTYWRAP
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/debug/src/node.js:76 - : tty.isatty(process.stderr.fd);
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/debug/src/debug.js:120 - debug.useColors = exports.useColors();
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/follow-redirects/index.js:6 - var debug = require("debug")("follow-redirects");

# SIGNALWRAP
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/debug/src/node.js:76 - : tty.isatty(process.stderr.fd);
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/debug/src/debug.js:120 - debug.useColors = exports.useColors();
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/follow-redirects/index.js:6 - var debug = require("debug")("follow-redirects");

# TTYWRAP
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/binary-install/src/binary.js:88 - console.log("Downloading release", this.url);
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/binary.js:37 - return binary.install();

# TCPWRAP
(unknown stack trace)

# TLSWRAP
(unknown stack trace)

# DNSCHANNEL
(unknown stack trace)

# HTTPCLIENTREQUEST
(unknown stack trace)

# Timeout
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/install-wrangler.js:7 - setInterval(() => {

# ZLIB
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/minizlib/index.js:60 - this[_handle] = new realZlib[mode](opts)
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/minizlib/index.js:193 - super(opts, mode)
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/minizlib/index.js:292 - super(opts, 'Unzip')
/Users/magicdawn/.npm-global/lib/node_modules/@cloudflare/wrangler/node_modules/tar/lib/parse.js:347 - this[UNZIP] = new zlib.Unzip()

# TickObject
(unknown stack trace)
```

Beginne mit install-wrangler.js und binary.js und reproduziere anschließend die im Bericht beschriebene npm-Installation. Prüfe, warum der postinstall-Prozess aktiv bleibt und warum die binary nicht verlinkt wird. Erledigt bedeutet, dass die Installation abgeschlossen wird, ohne einen erzwungenen Exit zu erfordern, und die binary verlinkt ist.

Vom Indexierungsmodell aus dem Issue-Text verfasst.