@wordpress/blocks/build/api/raw-handling/normalise-blocks.js

Block API for WordPress.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = normaliseBlocks;
var _dom = require("@wordpress/dom");
/**
 * WordPress dependencies
 */

function normaliseBlocks(HTML, options = {}) {
  const decuDoc = document.implementation.createHTMLDocument('');
  const accuDoc = document.implementation.createHTMLDocument('');
  const decu = decuDoc.body;
  const accu = accuDoc.body;
  decu.innerHTML = HTML;
  while (decu.firstChild) {
    const node = decu.firstChild;

    // Text nodes: wrap in a paragraph, or append to previous.
    if (node.nodeType === node.TEXT_NODE) {
      if ((0, _dom.isEmpty)(node)) {
        decu.removeChild(node);
      } else {
        if (!accu.lastChild || accu.lastChild.nodeName !== 'P') {
          accu.appendChild(accuDoc.createElement('P'));
        }
        accu.lastChild.appendChild(node);
      }
      // Element nodes.
    } else if (node.nodeType === node.ELEMENT_NODE) {
      // BR nodes: create a new paragraph on double, or append to previous.
      if (node.nodeName === 'BR') {
        if (node.nextSibling && node.nextSibling.nodeName === 'BR') {
          accu.appendChild(accuDoc.createElement('P'));
          decu.removeChild(node.nextSibling);
        }

        // Don't append to an empty paragraph.
        if (accu.lastChild && accu.lastChild.nodeName === 'P' && accu.lastChild.hasChildNodes()) {
          accu.lastChild.appendChild(node);
        } else {
          decu.removeChild(node);
        }
      } else if (node.nodeName === 'P') {
        // Only append non-empty paragraph nodes.
        if ((0, _dom.isEmpty)(node) && !options.raw) {
          decu.removeChild(node);
        } else {
          accu.appendChild(node);
        }
      } else if ((0, _dom.isPhrasingContent)(node)) {
        if (!accu.lastChild || accu.lastChild.nodeName !== 'P') {
          accu.appendChild(accuDoc.createElement('P'));
        }
        accu.lastChild.appendChild(node);
      } else {
        accu.appendChild(node);
      }
    } else {
      decu.removeChild(node);
    }
  }
  return accu.innerHTML;
}
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