svelte/src/compiler/compile/nodes/Comment.ts

import Node from './shared/Node';

const pattern = /^\s*svelte-ignore\s+([\s\S]+)\s*$/m;

export default class Comment extends Node {
	type: 'Comment';
	data: string;
	ignores: string[];

	constructor(component, parent, scope, info) {
		super(component, parent, scope, info);
		this.data = info.data;

		const match = pattern.exec(this.data);
		this.ignores = match ? match[1].split(/[^\S]/).map(x => x.trim()).filter(Boolean) : [];
	}
}