src types.ts

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  export type ValidationFieldPath<T extends object> =
  | "root"
  | Extract<keyof T, string>
  | `${Extract<keyof T, string>}.${string}`;
 
export type ValidationFieldErrors<T extends object> = Partial<
  Record<ValidationFieldPath<T>, string>
>;
 
export interface ValidationResult<T extends object> {
  isValid: boolean;
  fieldErrors: ValidationFieldErrors<T>;
}
 
export type FormValidator<T extends object> = (data: T) => ValidationResult<T>;
 
export const validationSuccess = <T extends object>(): ValidationResult<T> => ({
  isValid: true,
  fieldErrors: {},
});
 
export const validationFailure = <T extends object>(
  fieldErrors: ValidationFieldErrors<T>,
): ValidationResult<T> => ({
  isValid: false,
  fieldErrors,
});