@wordpress/block-editor/build-module/utils/selection.js

Generic block editor.

// packages/block-editor/src/utils/selection.js
import { RichTextData } from "@wordpress/rich-text";
var START_OF_SELECTED_AREA = "\x86";
function retrieveSelectedAttribute(blockAttributes) {
  if (!blockAttributes) {
    return;
  }
  return Object.keys(blockAttributes).find((name) => {
    const value = blockAttributes[name];
    return (typeof value === "string" || value instanceof RichTextData) && // To do: refactor this to use rich text's selection instead, so we
    // no longer have to use on this hack inserting a special character.
    value.toString().indexOf(START_OF_SELECTED_AREA) !== -1;
  });
}
function findRichTextAttributeKey(blockType) {
  for (const [key, value] of Object.entries(blockType.attributes)) {
    if (value.source === "rich-text" || value.source === "html") {
      return key;
    }
  }
}
export {
  START_OF_SELECTED_AREA,
  findRichTextAttributeKey,
  retrieveSelectedAttribute
};
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