chore(deps): update angular-eslint monorepo to v21 (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular-eslint/eslint-plugin (source)	19.0.0 -> 21.0.1
angular-eslint (source)	^19.0.0 -> ^21.0.0

---

Release Notes

angular-eslint/angular-eslint (@​angular-eslint/eslint-plugin)

v21.0.1

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v21.0.0

Compare Source

🚀 Features

• ⚠️ eslint-plugin: formally deprecate [no-conflicting-lifecycle] and remove from "all" config (5d845924)

🩹 Fixes

• ⚠️ eslint-plugin: make component-selector and directive-selector configurations strict and clear (938362cb)

⚠️ Breaking Changes

• ⚠️ eslint-plugin: formally deprecate [no-conflicting-lifecycle] and remove from "all" config (5d845924)
• eslint-plugin: make component-selector and directive-selector configurations strict and clear (938362cb)
  The selector validation logic has been updated to be more strict and
  predictable:
  Default Prefix Change:
  • Both component-selector and directive-selector now default to prefix: 'app' to match
    Angular CLI defaults
  • This means selectors without the 'app' prefix will now fail validation unless a
    different prefix is explicitly configured
    Style and Prefix Validation Changes:
  • Single-word selectors (e.g., 'appselector') are now appropriately considered valid for
    both camelCase and kebab-case styles
  • Style validation is now completely independent from prefix validation
  • When a prefix is defined and found in a selector, the rule now correctly validates
    whether the prefix is properly separated according to the style:
    • For kebab-case: prefix must be followed by a hyphen (e.g., 'app-selector' ✓,
      'appselector' ✗)
    • For camelCase: prefix must be followed by an uppercase letter (e.g., 'appSelector' ✓,
      'appselector' ✗)
      Changes to error reporting:
  • Selectors that have valid style but improper prefix usage now report 'prefixFailure'
    instead of 'styleAndPrefixFailure'
  • Example: 'sgggg-bar' with prefix 'sg' and style 'kebab-case' now reports
    'prefixFailure' (valid kebab-case, but prefix not properly separated)
    Migration Guide:
  • If you have components/directives without prefixes that were previously passing, either:
    1. Add the 'app' prefix to your selectors
    2. Configure a different prefix that matches your existing selectors
    3. Explicitly set prefix: [] or prefix: '' in your ESLint config to disable prefix checking
       These changes make the rules more predictable and align better with developer expectations
       while maintaining compatibility with Angular's compiler requirements for web components.

❤️ Thank You

• JamesHenry @​JamesHenry

20.7.0 (2025-11-22)

🩹 Fixes

• eslint-plugin: [use-component-selector] detect variables (#​2797)
• eslint-plugin: false negatives in pipe-prefix, component-selector and directive-selector when linting selectors that only contain a prefix (#​2769)
• eslint-plugin: [prefer-inject] improve test coverage and documentation (#​2770)

❤️ Thank You

• Dmitry Zakharov @​pumano
• Evgeny Stepanovych @​undsoft
• James Henry @​JamesHenry

20.6.0 (2025-11-09)

🚀 Features

• eslint-plugin: support multiple configs for component-selector and directive-selector (#​2762)

❤️ Thank You

• James Henry @​JamesHenry

20.5.2 (2025-11-08)

🩹 Fixes

• eslint-plugin: update style guide links (#​2689)
• eslint-plugin-template: [use-lifecycle-interface] fix fixer when class contains generics (#​2749)

❤️ Thank You

• Aristeidis Bampakos @​bampakoa
• Evgeny Stepanovych @​undsoft

20.5.1 (2025-11-03)

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] fix false positives (#​2705)

❤️ Thank You

• Dave @​reduckted

20.5.0 (2025-10-27)

🚀 Features

• eslint-plugin: add rule prefer-host-metadata-property (#​2615)

❤️ Thank You

• jase @​jase88

20.4.0 (2025-10-12)

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

20.3.0 (2025-09-14)

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

20.2.0 (2025-08-22)

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] do not report signal sets within logical expressions (#​2581)
• eslint-plugin: [relative-url-prefix] handle template literals (#​2576)

❤️ Thank You

• Dave @​reduckted
• James Henry @​JamesHenry

20.1.1 (2025-06-19)

🩹 Fixes

• eslint-plugin: [no-output-on-prefix] update style guide link (#​2514)

❤️ Thank You

• Victor Santelé

20.1.0 (2025-06-16)

🚀 Features

• eslint-plugin: add rules to ban experimental and developer preview (#​2037)

❤️ Thank You

• Daniel Kimmich @​json-derulo

v20.7.0

Compare Source

20.7.0 (2025-11-22)

🚀 Features

• eslint-plugin-template: [prefer-ngsrc] add suggestions (#​2772)

🩹 Fixes

• update dependency eslint to v9.39.1 (#​2765)
• update dependency @​angular/compiler to v20.3.10 (#​2775)
• update typescript-eslint packages to v8.46.4 (#​2780)
• update dependency @​angular/compiler to v20.3.11 (#​2785)
• support eslint defineConfig types better (#​2793)
• update dependency @​angular/compiler to v20.3.12 (#​2794)
• eslint-plugin: [prefer-inject] improve test coverage and documentation (#​2770)
• eslint-plugin: false negatives in pipe-prefix, component-selector and directive-selector when linting selectors that only contain a prefix (#​2769)
• eslint-plugin: [use-component-selector] detect variables (#​2797)

❤️ Thank You

• Dmitry Zakharov @​pumano
• Evgeny Stepanovych @​undsoft
• James Henry @​JamesHenry

v20.6.0

Compare Source

🚀 Features

• eslint-plugin: support multiple configs for component-selector and directive-selector (#​2762)

❤️ Thank You

• James Henry @​JamesHenry

v20.5.2

Compare Source

🩹 Fixes

• eslint-plugin: update style guide links (#​2689)
• eslint-plugin-template: [use-lifecycle-interface] fix fixer when class contains generics (#​2749)

❤️ Thank You

• Aristeidis Bampakos @​bampakoa
• Evgeny Stepanovych @​undsoft

v20.5.1

Compare Source

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] fix false positives (#​2705)

❤️ Thank You

• Dave @​reduckted

v20.5.0

Compare Source

🚀 Features

• eslint-plugin: add rule prefer-host-metadata-property (#​2615)

❤️ Thank You

• jase @​jase88

v20.4.0

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v20.3.0

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v20.2.0

Compare Source

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] do not report signal sets within logical expressions (#​2581)
• eslint-plugin: [relative-url-prefix] handle template literals (#​2576)

❤️ Thank You

• Dave @​reduckted
• James Henry @​JamesHenry

v20.1.1

Compare Source

🩹 Fixes

• eslint-plugin: [no-output-on-prefix] update style guide link (#​2514)

❤️ Thank You

• Victor Santelé

v20.1.0

Compare Source

🚀 Features

• eslint-plugin: add rules to ban experimental and developer preview (#​2037)

❤️ Thank You

• Daniel Kimmich @​json-derulo

v20.0.0

Compare Source

🚀 Features

• ⚠️ eslint-lint: add prefer-inject to recommended (c8367d3b)
• ⚠️ eslint-plugin: remove (component|directive)-class-suffix from recommended (c1022ee6)
• ⚠️ eslint-plugin: switch prefer-standalone fix to suggestion, reference guide (4583034f)

🩹 Fixes

• ⚠️ eslint-plugin: [sort-keys-in-type-decorator] default orders now include all known keys (9183385d)

⚠️ Breaking Changes

• ⚠️ eslint-plugin: [sort-keys-in-type-decorator] default orders now include all known keys (9183385d)
• ⚠️ eslint-lint: add prefer-inject to recommended (c8367d3b)
• ⚠️ eslint-plugin: remove (component|directive)-class-suffix from recommended (c1022ee6)
• ⚠️ eslint-plugin: switch prefer-standalone fix to suggestion, reference guide (4583034f)

❤️ Thank You

• JamesHenry @​JamesHenry

19.8.0 (2025-06-06)

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

19.7.1 (2025-06-03)

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] handle direct signal calls in member expressions (#​2491)

❤️ Thank You

• James Henry @​JamesHenry

19.7.0 (2025-06-02)

🚀 Features

• eslint-plugin: [require-localize-metadata] add requireCustomId option (#​2430)
• eslint-plugin: add no-uncalled-signals rule (#​2383)

🩹 Fixes

• eslint-plugin-template: any valid DOM element with role button is interactive (#​2488)

❤️ Thank You

• Igor Dimitrijevic
• James Henry @​JamesHenry
• Stephen Jackson

19.6.0 (2025-05-27)

🚀 Features

• eslint-plugin: [prefer-inject] add new rule (#​2461)

🩹 Fixes

• eslint-plugin: [use-lifecycle-interface] do not report if the method uses override (#​2463)
• eslint-plugin: [sort-keys-in-type-decorator] preserve unconfigured properties during autofix (#​2456)

❤️ Thank You

• James Henry @​JamesHenry

19.5.0 (2025-05-25)

🚀 Features

• eslint-plugin: introduce sort keys in type-decorator rule (#​2187)

❤️ Thank You

• Benjamin Schäublin

19.4.0 (2025-05-08)

🚀 Features

• eslint-plugin: add rule prefer-output-emitter-ref (#​2324)

❤️ Thank You

• Dave @​reduckted

19.3.0 (2025-03-22)

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

19.2.1 (2025-03-08)

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

19.2.0 (2025-03-02)

🚀 Features

• eslint-plugin: add rule require-lifecycle-on-prototype (#​2259)

🩹 Fixes

• eslint-plugin-template: find inline templates on components in blocks (#​2238)

❤️ Thank You

• Dave @​reduckted

19.1.0 (2025-02-09)

🚀 Features

• eslint-plugin: prefer-signals now checks .asReadonly() calls (#​2218)
• eslint-plugin: prefer-signals read-only suggestion is now a fix (#​2175)

🩹 Fixes

• eslint-plugin: [no-input-prefix] false positive on input initializer value (#​2184)
• eslint-plugin: [prefer-signals] support linkedSignal (#​2213)

❤️ Thank You

• Cédric Exbrayat @​cexbrayat
• Dave @​reduckted
• Lucas Neto Moreira

19.0.2 (2024-12-10)

🩹 Fixes

• eslint-plugin: [prefer-standalone] error range should only include property and value (#​2172)

❤️ Thank You

• James Henry @​JamesHenry

19.0.1 (2024-12-06)

🩹 Fixes

• eslint-plugin: adding prefer-signals rule to exported config (#​2150)

❤️ Thank You

• Quentin Deroubaix @​quentinderoubaix

v19.8.1

Compare Source

19.8.1 (2025-06-19)

🩹 Fixes

• eslint-plugin-template: [no-interpolation-in-attributes] use keySpan as attr. range and sourceSpan as replacement range (#​2531)

❤️ Thank You

• Niklas Wolf

v19.8.0

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v19.7.1

Compare Source

🩹 Fixes

• eslint-plugin: [no-uncalled-signals] handle direct signal calls in member expressions (#​2491)

❤️ Thank You

• James Henry @​JamesHenry

v19.7.0

Compare Source

🚀 Features

• eslint-plugin: [require-localize-metadata] add requireCustomId option (#​2430)
• eslint-plugin: add no-uncalled-signals rule (#​2383)

🩹 Fixes

• eslint-plugin-template: any valid DOM element with role button is interactive (#​2488)

❤️ Thank You

• Igor Dimitrijevic
• James Henry @​JamesHenry
• Stephen Jackson

v19.6.0

Compare Source

🚀 Features

• eslint-plugin: [prefer-inject] add new rule (#​2461)

🩹 Fixes

• eslint-plugin: [use-lifecycle-interface] do not report if the method uses override (#​2463)
• eslint-plugin: [sort-keys-in-type-decorator] preserve unconfigured properties during autofix (#​2456)

❤️ Thank You

• James Henry @​JamesHenry

v19.5.0

Compare Source

🚀 Features

• eslint-plugin: introduce sort keys in type-decorator rule (#​2187)

❤️ Thank You

• Benjamin Schäublin

v19.4.0

Compare Source

🚀 Features

• eslint-plugin: add rule prefer-output-emitter-ref (#​2324)

❤️ Thank You

• Dave @​reduckted

v19.3.0

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v19.2.1

Compare Source

This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

v19.2.0

Compare Source

🚀 Features

• eslint-plugin: add rule require-lifecycle-on-prototype (#​2259)

🩹 Fixes

• eslint-plugin-template: find inline templates on components in blocks (#​2238)

❤️ Thank You

• Dave @​reduckted

v19.1.0

Compare Source

🚀 Features

• eslint-plugin: prefer-signals now checks .asReadonly() calls (#​2218)
• eslint-plugin: prefer-signals read-only suggestion is now a fix (#​2175)

🩹 Fixes

• eslint-plugin: [no-input-prefix] false positive on input initializer value (#​2184)
• eslint-plugin: [prefer-signals] support linkedSignal (#​2213)

❤️ Thank You

• Cédric Exbrayat @​cexbrayat
• Dave @​reduckted
• Lucas Neto Moreira

v19.0.2

Compare Source

🩹 Fixes

• eslint-plugin: [prefer-standalone] error range should only include property and value (#​2172)

❤️ Thank You

• James Henry @​JamesHenry

v19.0.1

Compare Source

🩹 Fixes

• eslint-plugin: adding prefer-signals rule to exported config (#​2150)

❤️ Thank You

• Quentin Deroubaix @​quentinderoubaix

angular-eslint/angular-eslint (angular-eslint)

v21.0.1

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v21.0.0

Compare Source

🚀 Features

• ⚠️ eslint-plugin: formally deprecate [no-conflicting-lifecycle] and remove from "all" config (5d845924)
• ⚠️ eslint-plugin-template: add prefer-control-flow to recommended config (77cd24d3)

⚠️ Breaking Changes

• ⚠️ eslint-plugin: formally deprecate [no-conflicting-lifecycle] and remove from "all" config (5d845924)
• ⚠️ eslint-plugin-template: add prefer-control-flow to recommended config (77cd24d3)

❤️ Thank You

• JamesHenry @​JamesHenry

20.7.0 (2025-11-22)

🩹 Fixes

• support eslint defineConfig types better (#​2793)

❤️ Thank You

• James Henry @​JamesHenry

20.6.0 (2025-11-09)

🩹 Fixes

• angular-eslint: support eslint defineConfig types in addition to typescript-eslint config (#​2760)

❤️ Thank You

• James Henry @​JamesHenry

20.5.2 (2025-11-08)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

20.5.1 (2025-11-03)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

20.5.0 (2025-10-27)

🚀 Features

• eslint-plugin: add rule prefer-host-metadata-property (#​2615)
• eslint-plugin-template: add prefer-built-in-pipes rule (#​2605)

❤️ Thank You

• Andreas Nicolaou @​andreasnicolaou
• jase @​jase88

20.4.0 (2025-10-12)

🚀 Features

• eslint-plugin-template: add rule prefer-at-else (#​2613)

❤️ Thank You

• Dave @​reduckted

20.3.0 (2025-09-14)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

20.2.0 (2025-08-22)

🚀 Features

• eslint-plugin-template: add rule no-empty-control-flow (#​2592)

❤️ Thank You

• Dave @​reduckted

20.1.1 (2025-06-19)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

20.1.0 (2025-06-16)

🚀 Features

• eslint-plugin: add rules to ban experimental and developer preview (#​2037)

❤️ Thank You

• Daniel Kimmich @​json-derulo

v20.7.0

Compare Source

🩹 Fixes

• support eslint defineConfig types better (#​2793)

❤️ Thank You

• James Henry @​JamesHenry

v20.6.0

Compare Source

🩹 Fixes

• angular-eslint: support eslint defineConfig types in addition to typescript-eslint config (#​2760)

❤️ Thank You

• James Henry @​JamesHenry

v20.5.2

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v20.5.1

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v20.5.0

Compare Source

🚀 Features

• eslint-plugin: add rule prefer-host-metadata-property (#​2615)
• eslint-plugin-template: add prefer-built-in-pipes rule (#​2605)

❤️ Thank You

• Andreas Nicolaou @​andreasnicolaou
• jase @​jase88

v20.4.0

Compare Source

🚀 Features

• eslint-plugin-template: add rule prefer-at-else (#​2613)

❤️ Thank You

• Dave @​reduckted

v20.3.0

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v20.2.0

Compare Source

🚀 Features

• eslint-plugin-template: add rule no-empty-control-flow (#​2592)

❤️ Thank You

• Dave @​reduckted

v20.1.1

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v20.1.0

Compare Source

🚀 Features

• eslint-plugin: add rules to ban experimental and developer preview (#​2037)

❤️ Thank You

• Daniel Kimmich @​json-derulo

v20.0.0

Compare Source

🚀 Features

• ⚠️ switch to angular v20 (e2b46ef4)
• ⚠️ eslint-lint: add prefer-inject to recommended (c8367d3b)
• ⚠️ eslint-plugin: remove (component|directive)-class-suffix from recommended (c1022ee6)

⚠️ Breaking Changes

• ⚠️ switch to angular v20 (e2b46ef4)
• ⚠️ eslint-lint: add prefer-inject to recommended (c8367d3b)
• ⚠️ eslint-plugin: remove (component|directive)-class-suffix from recommended (c1022ee6)

❤️ Thank You

• JamesHenry @​JamesHenry

19.8.0 (2025-06-06)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

19.7.1 (2025-06-03)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

19.7.0 (2025-06-02)

🚀 Features

• eslint-plugin: add no-uncalled-signals rule (#​2383)

❤️ Thank You

• Stephen Jackson

19.6.0 (2025-05-27)

🚀 Features

• eslint-plugin: [prefer-inject] add new rule (#​2461)

❤️ Thank You

• James Henry @​JamesHenry

19.5.0 (2025-05-25)

🚀 Features

• eslint-plugin-template: add rule prefer-at-empty (#​2352)
• eslint-plugin: introduce sort keys in type-decorator rule (#​2187)
• eslint-plugin-template: [no-nested-tags] add rule (#​2398)

❤️ Thank You

• Alexander von Weiss @​sod
• Benjamin Schäublin
• Dave @​reduckted

19.4.0 (2025-05-08)

🚀 Features

• eslint-plugin-template: Add prefer-template-literal rule (#​2308)
• eslint-plugin: add rule prefer-output-emitter-ref (#​2324)

❤️ Thank You

• Dave @​reduckted
• Guillaume DROUARD

19.3.0 (2025-03-22)

🚀 Features

• eslint-plugin-template: add rule prefer-contextual-for-variables (#​2311)

❤️ Thank You

• Dave @​reduckted

19.2.1 (2025-03-08)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

19.2.0 (2025-03-02)

🚀 Features

• eslint-plugin: add rule require-lifecycle-on-prototype (#​2259)

🩹 Fixes

• eslint-plugin-template: find inline templates on components in blocks (#​2238)

❤️ Thank You

• Dave @​reduckted

19.1.0 (2025-02-09)

🚀 Features

• eslint-plugin-template: add rule prefer-static-string-properties (#​2228)

❤️ Thank You

• Dave @​reduckted

19.0.2 (2024-12-10)

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

19.0.1 (2024-12-06)

🩹 Fixes

• eslint-plugin: adding prefer-signals rule to exported config (#​2150)

❤️ Thank You

• Quentin Deroubaix @​quentinderoubaix

v19.8.1

Compare Source

19.8.1 (2025-06-19)

🩹 Fixes

• eslint-plugin-template: [no-interpolation-in-attributes] use keySpan as attr. range and sourceSpan as replacement range (#​2531)

❤️ Thank You

• Niklas Wolf

v19.8.0

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v19.7.1

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v19.7.0

Compare Source

🚀 Features

• eslint-plugin: add no-uncalled-signals rule (#​2383)

❤️ Thank You

• Stephen Jackson

v19.6.0

Compare Source

🚀 Features

• eslint-plugin: [prefer-inject] add new rule (#​2461)

❤️ Thank You

• James Henry @​JamesHenry

v19.5.0

Compare Source

🚀 Features

• eslint-plugin-template: add rule prefer-at-empty (#​2352)
• eslint-plugin: introduce sort keys in type-decorator rule (#​2187)
• eslint-plugin-template: [no-nested-tags] add rule (#​2398)

❤️ Thank You

• Alexander von Weiss @​sod
• Benjamin Schäublin
• Dave @​reduckted

v19.4.0

Compare Source

🚀 Features

• eslint-plugin-template: Add prefer-template-literal rule (#​2308)
• eslint-plugin: add rule prefer-output-emitter-ref (#​2324)

❤️ Thank You

• Dave @​reduckted
• Guillaume DROUARD

v19.3.0

Compare Source

🚀 Features

• eslint-plugin-template: add rule prefer-contextual-for-variables (#​2311)

❤️ Thank You

• Dave @​reduckted

v19.2.1

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v19.2.0

Compare Source

🚀 Features

• eslint-plugin: add rule require-lifecycle-on-prototype (#​2259)

🩹 Fixes

• eslint-plugin-template: find inline templates on components in blocks (#​2238)

❤️ Thank You

• Dave @​reduckted

v19.1.0

Compare Source

🚀 Features

• eslint-plugin-template: add rule prefer-static-string-properties (#​2228)

❤️ Thank You

• Dave @​reduckted

v19.0.2

Compare Source

This was a version bump only for angular-eslint to align it with other projects, there were no code changes.

v19.0.1

Compare Source

🩹 Fixes

• eslint-plugin: adding prefer-signals rule to exported config (#​2150)

❤️ Thank You

• Quentin Deroubaix @​quentinderoubaix

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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