Function filterNode

src/parser-utils.ts:298–312

(node?: ts.Node,
                           predicate?: (node: ts.Node) => boolean,
                           isLeaf: (node: ts.Node) => boolean = isFunctionLikeNode)

 * Helper to get all the child nodes.
 */
export function filterNode(node?: ts.Node,
                           predicate?: (node: ts.Node) => boolean,
                           isLeaf: (node: ts.Node) => boolean = isFunctionLikeNode) {
  const results: ts.Node[] = [];
  if (!node)
    return results;
  const visit = (node: ts.Node) => {
    if (!predicate || predicate(node))
      results.push(node);
    if (!isLeaf(node))
      ts.forEachChild(node, visit);
  };
  visit(node);
  return results;
}

/**
 * Parse comment hints like "// compilets: destructor".