Function addNode

packages/utils/src/lib/coverage-tree.ts:57–95

(
  root: FileTree,
  folders: string[],
  file: string,
  coverage: FileCoverage,
)

}

function addNode(
  root: FileTree,
  folders: string[],
  file: string,
  coverage: FileCoverage,
): FileTree {
  const folder = folders[0];
  const rootChildren = 'children' in root ? root.children : [];

  if (folder) {
    if (rootChildren.some(({ name }) => name === folder)) {
      return {
        ...root,
        children: rootChildren.map(node =>
          node.name === folder
            ? addNode(node, folders.slice(1), file, coverage)
            : node,
        ),
      };
    }
    return {
      ...root,
      children: [
        ...rootChildren,
        addNode(
          { name: folder, children: [] },
          folders.slice(1),
          file,
          coverage,
        ),
      ],
    };
  }

  return {
    ...root,
    children: [...rootChildren, { ...coverage, name: file }],
  };
}

function calculateTreeCoverage(root: FileTree): CoverageTreeNode {
  if ('children' in root) {