v12.0.0-rc.1

12.0.0-rc.1 (2026-06-20)

⚠ BREAKING CHANGES

• change root package.json type to module (#6078)

🌟 Features

• change root package.json type to module (#6078) (da015de)

📚 Documentation

• add blog (#6095) (c0280ba)
• switch util.inherits to class extends (#5677) (f6e8d9a)

🧹 Chores

• configure Release Please for RC (#6083) (8f3a61c)
• deps: update dependency @types/node to v24.13.0 (#6066) (fb1998a)
• deps: update dependency eslint-plugin-n to v18.1.0 (#6072) (6f56135)
• deps: update dependency knip to v6.16.1 (#6067) (b204395)
• deps: update dependency rollup to v4.61.0 (#6050) (87696d5)
• deps: update dependency rollup to v4.62.0 (#6103) (69e04bf)
• deps: update eslint monorepo to v10.5.0 (#6100) (ac372e0)
• explain "trivial changes", update PR template (#6075) (6cbe3d5)
• fix "remove 'waiting for author' " workflow (#6090) (b80d44b)
• fix formatting on new remove-waiting-label file (#6062) (bfcb02a)
• fix Release Please manifest (#6097) (cfd9cf7)
• remove "status: waiting for author" label on review request (#5983) (fa3488d)
• replace Karma with Playwright for browser tests (#6031) (7c9b004)
• restore cursor in watch failure diagnostics (#6102) (d640269)
• synchronize watch integration tests on observed runs instead of sleeps (#6058) (84af186)
• upgrade Astro and its deps (#6089) (66cdd8f)
• use 1st-party script for blocked-pr.yml (#6085) (54aee06)

🤖 Automation

• deps: bump codecov/codecov-action from 6 to 7 in the github-actions group (#6051) (00db758)