11 lines
902 B
Markdown
11 lines
902 B
Markdown
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@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](https://angular.io/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. This error is commonly thrown when a constructor defines parameters with primitive types like `string`, `number`, `boolean`, and `Object`.
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Use the [@Injectable](https://angular.io/api/core/Injectable) method or [@Inject](https://angular.io/api/core/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](https://angular.io/errors/NG0201).
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