boonya/react-hook-form-validation

import {DEFAULT_FIELD_STATE, FormPayload, FieldRuleSet, FieldState} from '../types';
import createValidityReducer from './validityReducerCreator';
import {extractFieldValue} from '../helpers';

export default async function validityCalculator(ruleset: FieldRuleSet, payload: FormPayload, name: string, index: number): Promise<FieldState> {
    const value = extractFieldValue(payload, name, index);

    const defaultResult = {
        ...DEFAULT_FIELD_STATE,
        name,
        index,
        pristine: value === undefined,
    };

    if (!ruleset || ruleset.length < 1) {
        return defaultResult;
    }

    const validityReducer = createValidityReducer(payload, name, value, index);
    // const collect = ruleset.map(() => {});
    const reducedResult = await ruleset.reduce(validityReducer, Promise.resolve(null));
    return reducedResult || defaultResult;
}