Method append

benchmark/data.js:873–879

(str, options)

		return this;
	}
	append(str, options) {
		this.addSource({
			content: new MagicString(str),
			separator: (options && options.separator) || '',
		});
		return this;
	}
	clone() {
		const bundle = new Bundle({
			intro: this.intro,