5dc276af52
feat: add optional chaining to prevent types errors and add an example of helper lines (#1904) * docs: code errors in "Updating Node Data" (#1900) fix(docs): Example of fixing code errors in "Updating Node Data" * fix: add optional chaining to prevent errors in link filtering * feat: add an example of helper lines * refactor: In the HelperLines example, replace the observer with dimensions --------- Co-authored-by: Charles Lee <114982593+rookie-orange@users.noreply.github.com> Co-authored-by: J <gongjie0422@163.com>