Fix eslint error `@typescript-eslint/no-base-to-string` in `common.ts` #13336

	name: Unit Tests

	on: [push, pull_request, merge_group]

	permissions:
	contents: read

	jobs:
	unit-test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

	- uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2 # v4.0.0
	# uses version from "packageManager" field in package.json

	- name: Setup Node.js
	uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6 # v4.0.4
	with:
	cache: pnpm
	node-version-file: '.node-version'

	- name: Install Packages
	run: \|
	pnpm install --frozen-lockfile
	env:
	CYPRESS_CACHE_FOLDER: .cache/Cypress

	- name: Run Unit Tests
	run: \|
	pnpm test:coverage

	- name: Run ganttDb tests using California timezone
	env:
	# Makes sure that gantt db works even in a timezone that has daylight savings
	# since some days have 25 hours instead of 24.
	TZ: America/Los_Angeles
	run: \|
	pnpm exec vitest run ./packages/mermaid/src/diagrams/gantt/ganttDb.spec.ts --coverage

	- name: Verify out-of-tree build with TypeScript
	run: \|
	pnpm test:check:tsc

	- name: Upload Coverage to Codecov
	uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 # v4.5.0
	# Run step only pushes to develop and pull_requests
	if: ${{ github.event_name == 'pull_request' \|\| github.ref == 'refs/heads/develop' }}
	with:
	files: ./coverage/vitest/lcov.info
	flags: unit
	name: mermaid-codecov
	fail_ci_if_error: false
	verbose: true
	token: 6845cc80-77ee-4e17-85a1-026cd95e0766

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