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andrechristikan avatar andrechristikan commented on May 24, 2024 1

If you want to remove throw exception, actually that fine.
That will not make any difference to http response (if the error is scope of internal server error) cause this boilerplate has already global error handler named ErrorHttpFilter.

if you do not specific the exception than the error will treat as UnknownError, then will force convert to InternalServiceError.


The ErrorHttpFilter is for

  1. Catcher every error (database error, server error, or unknown error)

  2. Convert into HttpException with ErrorSerialization instance.

    export interface IErrors {
        readonly message: string | IMessage;
        readonly property: string;
    }
    
    export class ErrorSerialization {
        statusCode: number;
        message: string;
        errors?: IErrors[];
        _error?: string;
        _metadata?: ErrorMetadataSerialization;
        data?: Record<string, any>;
    }
  3. Custom error, if you throw the error

    Message value will refere to src/languages/**

    throw new InternalServerErrorException({
        statusCode: ENUM_ERROR_STATUS_CODE_ERROR.ERROR_UNKNOWN, // <-- can custom status code
        message: 'custom.message', // <--- if path is exist will replace with the message, otherwise will return the value
        errors: ValidationError[] | IValidationErrorImport[], // <-- this is for form validation, but you still can add this property and that will convert into IErrors[]  to http response
        _error: 'raw message', // <-- raw message, if you want to expose to http response
        _metadata: {
            customProperty: {
                messageProperties: {
                    serviceName: this.serviceName, // <-- if message value has {serviceName} then this will replace
                },
            },
           ...otherMetadata // <-- if you want to add other metadata to http response
        }
    });

from ack-nestjs-boilerplate.

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