@atlaskit/editor-plugin-block-menu/dist/es2019/editor-commands/transform-node-utils/steps/unwrapStep.js

BlockMenu plugin for @atlaskit/editor-core

export const unwrapStep = nodes => {
  const outputNodes = [];
  nodes.forEach(node => {
    // we may want to just skip the original instead of using it
    if (node.children.length === 0) {
      outputNodes.push(node);
    } else {
      outputNodes.push(...node.children);
    }
  });
  return outputNodes;
};