Closure Library is in Maintenance Mode · Issue #1214 · google/closure-library
TL;DR: Closure Library will be sunset over the next 9 months, from November 1, 2023, to August 1, 2024. We no longer see it as meeting the needs of modern JavaScript development, and we recommend that users look for alternative solutions. Feel free to skip the background and go straight to the FAQ. In the nearly 14 years since Closure Library was first made public, it's broken a lot of ground and
