> For the complete documentation index, see [llms.txt](https://error.angular-package.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://error.angular-package.dev/commonerrors/overview.md). # Overview ## `CommonErrors {}` The `CommonErrors` object represents the storage of errors with [unique identification](/getting-started/basic-concepts.md#unique-identification) numbers. {% embed url="" %} `common-errors.class.ts` {% endembed %} ### **Accessors** | | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |

protected get errors(): Map<Id, any>
The get accessor returns the errors of Map type by returning the #errors property of a specified object.

| ### Properties | | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |

public static template?: string

Optional template of string type.

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#id?: Set<Id>
The collection of unique allowed identification numbers of generic type variable Id.

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#errors: Map<Id, any>
The errors storage of the Map type where the key is of the generic type variable Id.

| ### Methods | | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |

public delete(): this

Deletes the error of a specified id from the object.

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public has(): boolean
The has() method checks whether the error of the given id exists in a specified object.

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public throw(): void
Throws an error of the given id if the unique id was provided in the constructor.

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protected isAllowedId(): boolean
Checks whether the given identification number was provided in the constructor.

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