function a11y_figcaption_index(node) {
	w(node, 'a11y_figcaption_index', `\`<figcaption>\` must be first or last child of \`<figure>\`\nhttps://svelte.dev/e/a11y_figcaption_index`);
}
`<figcaption>` must be first or last child of `<figure>`
@param {null | NodeLike} node