Rules

Choose a preset for a coherent starting policy, or enable individual rules. The configuration guide provides complete setup examples for each entry point.

The package exposes 22 rules. “Yes” marks the Ionic/Angular rdlabo.configs.recommended preset. “W” marks the framework-independent workers/recommended preset. “TZ” marks the framework-independent workers-timezone/recommended preset.

Rule	Purpose	Fix	Preset
component-property-use-readonly	Require readonly on immutable Angular component properties.	Yes	Yes
deny-constructor-di	Disallow constructor dependency injection. Deprecated in favor of inject().	No	No
deny-element	Reject configured HTML elements, such as inline Ionic overlays.	No	Yes
deny-overlay-create	Disallow direct .create() calls on modal and popover controllers.	No	Yes
deny-soft-private-modifier	Replace TypeScript private with hard-private # fields.	Yes	Yes
implements-ionic-lifecycle	Require the matching interface for Angular and Ionic lifecycle methods.	Yes	Yes
initialize-timezone-at-module-scope	Keep workers-timezone initialization at one clear module-level site.	No	TZ
ionic-attr-type-check	Require property binding for non-string Ionic attributes.	Yes	Yes
no-component-method-except-lifecycle	Keep arbitrary methods out of Angular components.	No	Yes
no-component-writable-signal	Keep writable component state in a ViewModel, with a Signal Forms model exception.	No	No
no-implicit-timezone	Prevent implicit host-timezone behavior across Date and Intl APIs.	No	TZ
no-reactive-forms	Disallow Reactive Forms in favor of Angular Signal Forms.	No	No
no-template-driven-forms	Disallow template-driven forms except configured interoperability elements.	No	No
prefer-disable-handler	Wrap configured event handlers to prevent duplicate async actions.	No	Yes
prefer-ionic-standalone	Prefer Ionic 9 standalone imports and disallow IonicModule.	Yes	Yes
prefer-modal-launcher	Restrict presentModal calls to launch* functions.	No	Yes
require-ion-error-text	Require Ionic error text on validation controls.	No	Yes
require-ion-item-group	Require grouped Ionic list items for iOS 26 and Material Design 3.	Yes	Yes
require-viewmodel	Enforce component ownership and the ViewModelStore boundary.	No	Yes
restrict-try-block	Keep try blocks small and exclude Promise, RxJS, and Signal contexts by policy.	No	Yes, W
signal-use-as-signal-template	Require () when reading Angular Signals in templates.	No	Yes
signal-use-as-signal	Require correct Signal reads and writes in TypeScript.	Yes	Yes

Rule documentation

Each rule page in this documentation contains options and correct/incorrect examples.

Typed rules

Enable parserOptions.projectService for rules that inspect TypeScript types. Without typed linting, restrict-try-block still performs syntax-based checks but skips type-dependent Promise and RxJS detection. no-implicit-timezone requires typed linting. initialize-timezone-at-module-scope is syntactic only and does not need type information.