Code Inspections in Angular

This topic lists all PhpStorm code inspections available in Angular.

You can toggle specific inspections or change their severity level on the Editor | Inspections page of settings Ctrl+Alt+S.

Inspection	Description	Default Severity
Ambiguous component tag	Reports a component that is matched on an embedded template element `<ng-template>` or multiple components matched on any other element.	Error
Angular CLI add dependency	Suggests using the `ng add` command to install the dependency. `ng add` will use the package manager to download it and invoke a schematic which can update your project with configuration changes, add additional dependencies (e.g. polyfills), or scaffold package-specific initialization code.	Warning
Content inside <ng-content> tag	Reports a text or tag occurrence inside a `<ng-content>` tag used for content projection.	Error
Inaccessible component member in AOT mode	Reports accessing a private or protected member of a component from the component's template. Such usages result in AOT compilation failure.	Warning
Incorrect component template definition	Reports a component that doesn’t have an associated template or uses both `template` and `templateUrl` properties.	Error
Insecure binding to event	Reports a binding to an event property or attribute, for example, `[onclick]` or `[attr.onclick]` instead of `(click)`.	Warning
Invalid animation trigger assignment	Reports an invalid assignment of an animation trigger. To attach an animation to an element, use `[@triggerName]="expression"` or an attribute without a value `@triggerName`.	Error
Invalid entry component	Reports an invalid Angular component specified in the module’s `bootstrap` or `entryComponents` property.	Error
Invalid i18n attribute	Reports a problem with a `i18n-*` attribute.	Warning
Invalid imported or declared symbol	Reports any symbol that is declared, imported or exported by an Angular module that is not a module, component, directive, or pipe or can’t be used in the context of the property.	Error
Issues with ngSrc usage in img tags	Reports issues related to usage of `ngSrc` (NgOptimizedDirective) on `img` tags. Following issues are reported: `img` tags, which use `src` instead of `ngSrc` lack of `width` and `height`, or `fill` attributes when `ngSrc` is used `width` or `height`, and `fill` attributes being present on the same element when `ngSrc` is used	Weak warning
Missing event handler	Reports a missing event handler statement for an event binding.	Error
Missing or invalid component, directive or pipe declaration in a module	Reports a non-standalone Angular component, directive, or pipe that is not declared in any module or is declared in multiple modules.	Error
Missing or invalid selector	Reports an invalid `selector` property of a component or directive.	Error
Multiple structural directives on one element	Reports multiple structural directives (`ngIf`, `ngFor`, etc.) on one element.	Error
Recursive import or export of Angular module	Reports a cyclic dependency between Angular modules.	Error
Unbound or ambiguous template reference variable	Reports a template reference variable that is not assigned to a directive when using `exportAs` or is assigned to multiple directives.	Error
Undefined binding	Reports an undefined property, event, or structural directive bindings on elements.	Error
Undefined export from Angular module	Reports an export of an undeclared or unimported component, directive, or pipes from an Angular module.	Error
Undefined tag	Reports a tag defined by a component or directive out of the current scope.	Error

Last modified: 11 February 2024