Method overwrite

src/MagicString.js:368–371

(start, end, content, options)

	}

	overwrite(start, end, content, options) {
		options = options || {};
		return this.update(start, end, content, { ...options, overwrite: !options.contentOnly });
	}

	update(start, end, content, options) {
		start = start + this.offset;