Cannot run tests on Windows

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You want to:

• report a bug
• request a feature

Current behaviour

When I run npm test after git cloning and npm installing this repo, I get:

C:\ws\socketio>npm test

> socket.io@3.0.3 test C:\ws\socketio
> npm run format:check && npm run compile && nyc mocha --require ts-node/register --reporter spec --slow 200 --bail --timeout 10000 test/socket.io.ts


> socket.io@3.0.3 format:check C:\ws\socketio
> prettier --check "lib/**/*.ts" "test/**/*.ts"

Checking formatting...
All matched files use Prettier code style!

> socket.io@3.0.3 compile C:\ws\socketio
> rimraf ./dist && tsc

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'C:\ws\socketio\node'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
----------|----------|----------|----------|----------|-------------------|
File      |  % Stmts | % Branch |  % Funcs |  % Lines | Uncovered Line #s |
----------|----------|----------|----------|----------|-------------------|
All files |        0 |        0 |        0 |        0 |                   |
----------|----------|----------|----------|----------|-------------------|
npm ERR! Test failed.  See above for more details.

I traced this down to this issue in nyc, which is fixed in 15.0.0+.

Steps to reproduce (if the current behaviour is a bug)

On a Windows 10 computer:

• Clone project
• npm install
• npm test

Expected behaviour

Should run the tests.

Setup

• OS: Windows 10
• browser: n/a/
• socket.io version: master

Other information (e.g. stacktraces, related issues, suggestions how to fix)

Preparing a PR to fix this

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This PR fixes the issue for me: #3708

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Fixed by merging #3708