Function updateFile

test/FileSystemInfo.unittest.js:296–315

(
		/** @type {IFs} */ fs,
		/** @type {string} */ filename
	)

	};

	const updateFile = (
		/** @type {IFs} */ fs,
		/** @type {string} */ filename
	) => {
		const oldContent = /** @type {string} */ (
			/** @type {unknown} */ (fs.readFileSync(filename, "utf8"))
		);
		if (filename.endsWith(".json")) {
			const data = JSON.parse(oldContent);
			fs.writeFileSync(
				filename,
				JSON.stringify({
					...data,
					version: `${data.version}.1`
				})
			);
		} else {
			fs.writeFileSync(filename, `${oldContent}!`);
		}
	};

	for (const [name, options] of /** @type {[string, SnapshotOptions][]} */ ([
		["timestamp", { timestamp: true }],