Prepare Release v9.0.0

[github-actions]

This PR is a preview of the release that release-plan has prepared. To release you should just merge this PR 👍

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Release (2026-05-05)

• ember-power-select 9.0.0 (major)

💥 Breaking Change

• ember-power-select
  • #2023 Add wrapper div around options & afterOptionsComponent (possible breaking) (@mkszepp)
  • #1976 Remove deprecations & modernize e.keyCode with e.key (@mkszepp)
  • #1974 Drop support for Ember ArrayProxy, PromiseProxyMixin, ObjectProxy & remove last addObserver/removeObserver/@ember/utils usages (@mkszepp)
  • #1966 Fix Accessibility issue in label component (default should be div instead label tag) (@mkszepp)
  • #1964 Remove automatically added ember-basic-dropdown styles, Convert to modern scss api, Drop node-scss support & Remove built-in CSS/SCSS themes for Bootstrap and Material (@mkszepp)
  • #1965 Add css variables support & drop passing $ember-power-select-line-height without unit (@mkszepp)
  • #1960 Convert addon to gts & remove @embroider/util (@c0rydoras)
  • #1963 Drop support for old dependencies/peerDependencies (@mkszepp)
  • #1962 Remove setup blueprints (@mkszepp)
  • #1961 Drop support for ember < 4.12 (@mkszepp)
  • #1906 Improve addon typing & convert helpers to plain functions (@mkszepp)

🚀 Enhancement

• ember-power-select
  • #2034 Remove Component keyword in class name (@mkszepp)
  • #1990 Widen onInput return type for ember-concurrency compatibility (@johanrd)
  • #1991 Widen search return type for void-returning ember-concurrency tasks (@johanrd)

🐛 Bug Fix

• ember-power-select
  • #2036 Improve check for property in object (avoid exception with warp drive schemas) (@mkszepp)
  • #2033 Improve check for input in trigger (@mkszepp)
  • #2024 Improve check for input in trigger (@mkszepp)
  • #2022 Prevent closing select when search field is in trigger and cursor was moved with mouse click (@mkszepp)
  • #1992 fix: prevent custom component from poisoning T inference (@johanrd)
  • #1989 Add default type param T=unknown to PowerSelectOptionsComponent (@johanrd)
  • #1988 Add IsMultiple to beforeOption component as parameter (@mkszepp)
  • #1983 Add ember-concurrency/async-arrow-task-transform into babel publish config (@mkszepp)
  • #1966 Fix Accessibility issue in label component (default should be div instead label tag) (@mkszepp)

📝 Documentation

• ember-power-select
  • #1985 Fix SCSS deprecations in docs (@mkszepp)
  • #1973 Fix migrate docs (@mkszepp)

🏠 Internal

• ember-power-select
  • #2039 Migrate from release-it to release-plan (@mkszepp)
  • #2037 Update repo link (@mkszepp)
  • #2035 Update dependencies (@mkszepp)
  • #2013 Change styleSheet loading for shadow root tests (@mkszepp)
  • #2011 Update embroider (@mkszepp)
  • #2009 Remove ember-lifeline from test-app (@mkszepp)
  • #2008 Update dependencies (@mkszepp)
  • #1987 Update ember-basic-dropdown (@mkszepp)
  • #1986 Replace tracked-built-ins usages in tests (@mkszepp)
  • #1984 Update dependencies (@mkszepp)
  • #1981 Update ember-basic-dropdown (@mkszepp)
  • #1980 Add keywords to package.json (@mkszepp)
  • #1979 Fix some errors/warnings from package.json (@mkszepp)
  • #1978 Remove disabled eslint rules & fix source (@mkszepp)
  • #1977 Update dependencies (@mkszepp)
  • #1975 Remove ember-data / miragejs (unused) (@mkszepp)
  • #1971 Convert to new addon v2 blueprint (@mkszepp)
  • #1969 Remove ember-assign-helper dependency (@mkszepp)
  • #1968 Move to glint v2 (@mkszepp)
  • #1967 Convert test app to gts (@mkszepp)

Committers: 3

• Arthur (@c0rydoras)
• Johan Røed (@johanrd)
• Markus Sanin (@mkszepp)