@jverneaut/html-to-gutenberg/src/processors/root/RootAttributes/DataAlign.js

Create custom Gutenberg blocks from the HTML templates you already have.

import RootAttributeExtractor from "./RootAttributeExtractor.js";

export default class DataAlign extends RootAttributeExtractor {
  static attributeName = "dataAlign";
  static blockDataName = "_align";

  transformAttributeValue(attributeValue) {
    if (attributeValue.trim() === "false") {
      return [];
    }

    return attributeValue.split(" ").filter((string) => string.trim() !== "");
  }
}