Function serialiseAssets

packages/core/tests/css.test.ts:61–63

(
	assets: { filename: string; content: string }[],
)

 * Each file is separated by a header line so diffs are readable.
 */
const serialiseAssets = (
	assets: { filename: string; content: string }[],
): string => assets.map((a) => `/* ${a.filename} */\n${a.content}`).join('\n');

describe('renderFontFace', () => {
	it('static font-face', async () => {