Method appendRight

benchmark/data.js:317–327

(index, content)

		return this;
	}
	appendRight(index, content) {
		if (typeof content !== 'string') throw new TypeError('inserted content must be a string');
		this._split(index);
		const chunk = this.byStart[index];
		if (chunk) {
			chunk.appendRight(content);
		} else {
			this.outro += content;
		}
		return this;
	}
	clone() {
		const cloned = new MagicString(this.original, { filename: this.filename });
		let originalChunk = this.firstChunk;