@atlaskit/renderer/dist/es2019/ui/Renderer/rendererHelper.js

Renderer component

export const removeEmptySpaceAroundContent = document => {
  // Check if the document is valid
  if (!document || !document.content || !Array.isArray(document.content)) {
    return document;
  }

  // Check if the node is a meaningful content node meaning it is not an empty paragraph or a paragraph with only whitespace
  const isMeaningfulContentNode = node => {
    // Check if the node is a non-empty paragraph or a non-paragraph node
    if (node.type !== 'paragraph') {
      return true;
    }
    // If the paragraph is empty, return false
    if (!node.content || node.content.length === 0) {
      return false;
    }
    // Check if paragraph has any content other than `hardBreak` or whitespace text nodes
    return node.content.some(child => {
      return !((child === null || child === void 0 ? void 0 : child.type) === 'hardBreak' || (child === null || child === void 0 ? void 0 : child.type) === 'text' && typeof child.text === 'string' && child.text.trim() === '');
    });
  };
  const content = document.content;
  let firstContentIndex = -1;
  let lastContentIndex = -1;

  // Find the first and last paragraphs with content and check if they are meaningful
  for (let i = 0; i < content.length; i++) {
    if (isMeaningfulContentNode(content[i])) {
      if (firstContentIndex === -1) {
        firstContentIndex = i;
      }
      lastContentIndex = i;
    }
  }

  // If no content was found, return an empty document
  if (firstContentIndex === -1) {
    return {
      ...document,
      content: []
    };
  }

  // Slice the content array to include only paragraphs between the first and last content
  const trimmedContent = content.slice(firstContentIndex, lastContentIndex + 1);

  // Return a new document with the trimmed content
  return {
    ...document,
    content: trimmedContent
  };
};