@wordpress/blocks/build-module/api/raw-handling/is-inline-content.js

Block API for WordPress.

// packages/blocks/src/api/raw-handling/is-inline-content.js
import { isTextContent } from "@wordpress/dom";
function isInline(node, contextTag) {
  if (isTextContent(node)) {
    return true;
  }
  if (!contextTag) {
    return false;
  }
  const tag = node.nodeName.toLowerCase();
  const inlineAllowedTagGroups = [
    ["ul", "li", "ol"],
    ["h1", "h2", "h3", "h4", "h5", "h6"]
  ];
  return inlineAllowedTagGroups.some(
    (tagGroup) => [tag, contextTag].filter((t) => !tagGroup.includes(t)).length === 0
  );
}
function deepCheck(nodes, contextTag) {
  return nodes.every(
    (node) => isInline(node, contextTag) && deepCheck(Array.from(node.children), contextTag)
  );
}
function isDoubleBR(node) {
  return node.nodeName === "BR" && node.previousSibling && node.previousSibling.nodeName === "BR";
}
function isInlineContent(HTML, contextTag) {
  const doc = document.implementation.createHTMLDocument("");
  doc.body.innerHTML = HTML;
  const nodes = Array.from(doc.body.children);
  return !nodes.some(isDoubleBR) && deepCheck(nodes, contextTag);
}
export {
  isInlineContent as default
};
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