FuncType - v0.9.5
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    Type Alias ErrorMessage<T>

    ErrorMessage: T extends "VALIDATION_FAILED"
        ? `Validation failed: ${string}`
        : T extends "NETWORK_ERROR"
            ? `Network error: ${string}`
            : T extends "AUTH_REQUIRED"
                ? `Authentication required: ${string}`
                : T extends "NOT_FOUND"
                    ? `Not found: ${string}`
                    : T extends "PERMISSION_DENIED"
                        ? `Permission denied: ${string}`
                        : T extends "RATE_LIMITED"
                            ? `Rate limit exceeded: ${string}`
                            : T extends "INTERNAL_ERROR"
                                ? `Internal server error: ${string}`
                                : T extends "BAD_REQUEST"
                                    ? `Bad request: ${string}`
                                    : T extends "CONFLICT"
                                        ? `Conflict: ${string}`
                                        : T extends "TIMEOUT" ? `Request timeout: ${(...)}` : never

    Template literal type for error messages based on error code

    Type Parameters