function getDocblockFromComponent()

in src/handlers/componentDocblockHandler.ts [14:57]

• 39 lines of code
• 13 McCabe index (conditional complexity)

function getDocblockFromComponent(
  path: NodePath,
  importer: Importer,
): string | null {
  let description: string | null = null;

  if (isClassDefinition(path)) {
    // If we have a class declaration or expression, then the comment might be
    // attached to the last decorator instead as trailing comment.
    if (path.node.decorators && path.node.decorators.length > 0) {
      description = getDocblock(
        path.get('decorators', path.node.decorators.length - 1),
        true,
      );
    }
  }
  if (description == null) {
    // Find parent statement (e.g. var Component = React.createClass(<path>);)
    let searchPath = path;
    while (searchPath && !t.Statement.check(searchPath.node)) {
      searchPath = searchPath.parent;
    }
    if (searchPath) {
      // If the parent is an export statement, we have to traverse one more up
      if (
        t.ExportNamedDeclaration.check(searchPath.parentPath.node) ||
        t.ExportDefaultDeclaration.check(searchPath.parentPath.node)
      ) {
        searchPath = searchPath.parentPath;
      }
      description = getDocblock(searchPath);
    }
  }
  if (!description) {
    const searchPath = isReactForwardRefCall(path, importer)
      ? path.get('arguments', 0)
      : path;
    const inner = resolveToValue(searchPath, importer);
    if (inner.node !== path.node) {
      return getDocblockFromComponent(inner, importer);
    }
  }
  return description;
}