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Apply editorial suggestions for peer review. Co-authored-by: Tiffany Davis <88161089+TMDavisGoogle@users.noreply.github.com> PR Close #45325
20 lines
878 B
Markdown
20 lines
878 B
Markdown
@name Missing Token
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@category compiler
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@shortDescription No suitable injection token for parameter
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@description
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There is no injection token for a constructor parameter at compile time. [InjectionTokens](api/core/InjectionToken) are tokens that can be used in a Dependency Injection Provider.
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@debugging
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Look at the parameter that throws the error, and all uses of the class.
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This error is commonly thrown when a constructor defines parameters with primitive types such as `string`, `number`, `boolean`, and `Object`.
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Use the `@Injectable` method or `@Inject` decorator from `@angular/core` to ensure that the type you are injecting is reified \(has a runtime representation\). Make sure to add a provider to this decorator so that you do not throw [NG0201: No Provider Found](errors/NG0201).
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<!-- links -->
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<!-- external links -->
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<!-- end links -->
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@reviewed 2022-02-28
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