Method append

benchmark/data-min.js:252–255

(t)

		this.sourcemapLocations.add(t);
	}
	append(t) {
		if (typeof t != 'string') throw new TypeError('outro content must be a string');
		return ((this.outro += t), this);
	}
	appendLeft(t, e) {
		if (typeof e != 'string') throw new TypeError('inserted content must be a string');
		this._split(t);