tiptap/src/utils/nodeIsActive.js

import { findParentNode } from 'prosemirror-utils'

export default function (state, type, attrs) {
	const predicate = node => node.type === type
	const parent = findParentNode(predicate)(state.selection)

	if (attrs === {} || !parent) {
		return !!parent
	}

	return parent.node.hasMarkup(type, attrs)
}