Replace `instanceof` checks to work across color.js sources #529

	name: Lint & Test Types
	on:
	push:
	branches:
	- main
	pull_request:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	lint:
	name: Lint & Test Types
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-node@v4
	with:
	node-version: "lts/*"

	- run: npm install
	- run: npm run lint:ci
	- name: Detect changes
	id: changes
	run: echo "count=$(git status --porcelain=v1 2>/dev/null \| wc -l)" >> $GITHUB_OUTPUT
	- name: Fail if there are uncommitted changes
	if: steps.changes.outputs.count > 0
	run: \|
	echo "::error title=Uncommitted changes::run \"npm run lint\" to fix"
	exit 1

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