fix(sio-client): do not mangle the "_placeholder" attribute #901

	name: CI

	on:
	push:
	branches:
	- '**'
	pull_request:
	schedule:
	- cron: '0 0 * * 0'

	permissions:
	contents: read

	jobs:
	test-node:
	runs-on: ubuntu-latest
	timeout-minutes: 10

	strategy:
	fail-fast: false
	matrix:
	node-version:
	- 18
	- 20
	- 22

	services:
	redis:
	image: redis:7
	options: >-
	--health-cmd "redis-cli ping"
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 6379:6379

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v4
	with:
	node-version: ${{ matrix.node-version }}

	- name: Install dependencies
	run: npm ci

	- name: Compile each package
	run: npm run compile --workspaces --if-present

	- name: Run tests
	run: npm test --workspaces

	- name: Run tests with uws (engine.io)
	run: npm run test:uws --workspace=engine.io
	if: ${{ matrix.node-version == '18' }}

	- name: Run tests with fetch instead of XHR (engine.io-client)
	run: npm run test:node-fetch --workspace=engine.io-client
	if: ${{ matrix.node-version == '18' }}

	- name: Run tests with Node.js native WebSocket (engine.io-client)
	run: npm run test:node-builtin-ws --workspace=engine.io-client
	if: ${{ matrix.node-version == '22' }}

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