@hookform/lenses/dist/rhf/index.js

Type-safe lenses for React Hook Form that enable precise control over nested form state. Build reusable form components with composable operations, array handling, and full TypeScript support.

// src/rhf/useFieldArray.ts
import {
  set,
  useFieldArray as useFieldArrayOriginal
} from "react-hook-form";
function useFieldArray(props) {
  const result = useFieldArrayOriginal(props);
  const transformOnSet = (value) => {
    if (!props.lens || !props.lens.settings.lensesMap || !value) {
      return value;
    }
    const newValue = {};
    Object.entries(value || {}).forEach(([key, value2]) => {
      var _a, _b, _c, _d;
      const restructuredLens = (_b = (_a = props.lens.settings.lensesMap) == null ? void 0 : _a[0]) == null ? void 0 : _b[key];
      const newKey = (_d = restructuredLens == null ? void 0 : restructuredLens.settings.propPath) == null ? void 0 : _d.slice(`${(_c = props.lens) == null ? void 0 : _c.settings.restructureSourcePath}.`.length);
      set(newValue, newKey, value2);
    });
    return newValue;
  };
  return {
    ...result,
    prepend: (value, options) => {
      const newValue = Array.isArray(value) ? value.map(transformOnSet) : transformOnSet(value);
      result.prepend(newValue, options);
    },
    append: (value, options) => {
      const newValue = Array.isArray(value) ? value.map(transformOnSet) : transformOnSet(value);
      result.append(newValue, options);
    },
    insert: (index, value, options) => {
      const newValue = Array.isArray(value) ? value.map(transformOnSet) : transformOnSet(value);
      result.insert(index, newValue, options);
    },
    update: (index, value) => {
      const newValue = transformOnSet(value);
      result.update(index, newValue);
    },
    replace: (value) => {
      const newValue = Array.isArray(value) ? value.map(transformOnSet) : transformOnSet(value);
      result.replace(newValue);
    }
  };
}
export {
  useFieldArray
};
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