redux-form/es/createReducer.js

A higher order component decorator for forms using Redux and React

import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/objectWithoutPropertiesLoose";
import _isFunction from "lodash/isFunction";
import { ARRAY_INSERT, ARRAY_MOVE, ARRAY_POP, ARRAY_PUSH, ARRAY_REMOVE, ARRAY_REMOVE_ALL, ARRAY_SHIFT, ARRAY_SPLICE, ARRAY_SWAP, ARRAY_UNSHIFT, AUTOFILL, BLUR, CHANGE, CLEAR_ASYNC_ERROR, CLEAR_SUBMIT, CLEAR_SUBMIT_ERRORS, DESTROY, FOCUS, INITIALIZE, prefix, REGISTER_FIELD, RESET, RESET_SECTION, SET_SUBMIT_FAILED, SET_SUBMIT_SUCCEEDED, START_ASYNC_VALIDATION, START_SUBMIT, STOP_ASYNC_VALIDATION, STOP_SUBMIT, SUBMIT, TOUCH, UNREGISTER_FIELD, UNTOUCH, UPDATE_SYNC_ERRORS, CLEAR_FIELDS, UPDATE_SYNC_WARNINGS } from './actionTypes';
import createDeleteInWithCleanUp from './deleteInWithCleanUp';
import plain from './structure/plain';

var shouldDelete = function shouldDelete(_ref) {
  var getIn = _ref.getIn;
  return function (state, path) {
    var initialValuesPath = null;

    if (/^values/.test(path)) {
      initialValuesPath = path.replace('values', 'initial');
    }

    var initialValueComparison = initialValuesPath ? getIn(state, initialValuesPath) === undefined : true;
    return getIn(state, path) !== undefined && initialValueComparison;
  };
};

var isReduxFormAction = function isReduxFormAction(action) {
  return action && action.type && action.type.length > prefix.length && action.type.substring(0, prefix.length) === prefix;
};

function createReducer(structure) {
  var _behaviors;

  var deepEqual = structure.deepEqual,
      empty = structure.empty,
      forEach = structure.forEach,
      getIn = structure.getIn,
      setIn = structure.setIn,
      deleteIn = structure.deleteIn,
      fromJS = structure.fromJS,
      keys = structure.keys,
      size = structure.size,
      some = structure.some,
      splice = structure.splice;
  var deleteInWithCleanUp = createDeleteInWithCleanUp(structure)(shouldDelete);
  var plainDeleteInWithCleanUp = createDeleteInWithCleanUp(plain)(shouldDelete);

  var doSplice = function doSplice(state, key, field, index, removeNum, value, force) {
    var existing = getIn(state, key + "." + field);
    return existing || force ? setIn(state, key + "." + field, splice(existing, index, removeNum, value)) : state;
  };

  var doPlainSplice = function doPlainSplice(state, key, field, index, removeNum, value, force) {
    var slice = getIn(state, key);
    var existing = plain.getIn(slice, field);
    return existing || force ? setIn(state, key, plain.setIn(slice, field, plain.splice(existing, index, removeNum, value))) : state;
  };

  var rootKeys = ['values', 'fields', 'submitErrors', 'asyncErrors'];

  var arraySplice = function arraySplice(state, field, index, removeNum, value) {
    var result = state;
    var nonValuesValue = value != null ? empty : undefined;
    result = doSplice(result, 'values', field, index, removeNum, value, true);
    result = doSplice(result, 'fields', field, index, removeNum, nonValuesValue);
    result = doPlainSplice(result, 'syncErrors', field, index, removeNum, undefined);
    result = doPlainSplice(result, 'syncWarnings', field, index, removeNum, undefined);
    result = doSplice(result, 'submitErrors', field, index, removeNum, undefined);
    result = doSplice(result, 'asyncErrors', field, index, removeNum, undefined);
    return result;
  };

  var behaviors = (_behaviors = {}, _behaviors[ARRAY_INSERT] = function (state, _ref2) {
    var _ref2$meta = _ref2.meta,
        field = _ref2$meta.field,
        index = _ref2$meta.index,
        payload = _ref2.payload;
    return arraySplice(state, field, index, 0, payload);
  }, _behaviors[ARRAY_MOVE] = function (state, _ref3) {
    var _ref3$meta = _ref3.meta,
        field = _ref3$meta.field,
        from = _ref3$meta.from,
        to = _ref3$meta.to;
    var array = getIn(state, "values." + field);
    var length = array ? size(array) : 0;
    var result = state;

    if (length) {
      rootKeys.forEach(function (key) {
        var path = key + "." + field;

        if (getIn(result, path)) {
          var value = getIn(result, path + "[" + from + "]");
          result = setIn(result, path, splice(getIn(result, path), from, 1)); // remove

          result = setIn(result, path, splice(getIn(result, path), to, 0, value)); // insert
        }
      });
    }

    return result;
  }, _behaviors[ARRAY_POP] = function (state, _ref4) {
    var field = _ref4.meta.field;
    var array = getIn(state, "values." + field);
    var length = array ? size(array) : 0;
    return length ? arraySplice(state, field, length - 1, 1) : state;
  }, _behaviors[ARRAY_PUSH] = function (state, _ref5) {
    var field = _ref5.meta.field,
        payload = _ref5.payload;
    var array = getIn(state, "values." + field);
    var length = array ? size(array) : 0;
    return arraySplice(state, field, length, 0, payload);
  }, _behaviors[ARRAY_REMOVE] = function (state, _ref6) {
    var _ref6$meta = _ref6.meta,
        field = _ref6$meta.field,
        index = _ref6$meta.index;
    return arraySplice(state, field, index, 1);
  }, _behaviors[ARRAY_REMOVE_ALL] = function (state, _ref7) {
    var field = _ref7.meta.field;
    var array = getIn(state, "values." + field);
    var length = array ? size(array) : 0;
    return length ? arraySplice(state, field, 0, length) : state;
  }, _behaviors[ARRAY_SHIFT] = function (state, _ref8) {
    var field = _ref8.meta.field;
    return arraySplice(state, field, 0, 1);
  }, _behaviors[ARRAY_SPLICE] = function (state, _ref9) {
    var _ref9$meta = _ref9.meta,
        field = _ref9$meta.field,
        index = _ref9$meta.index,
        removeNum = _ref9$meta.removeNum,
        payload = _ref9.payload;
    return arraySplice(state, field, index, removeNum, payload);
  }, _behaviors[ARRAY_SWAP] = function (state, _ref10) {
    var _ref10$meta = _ref10.meta,
        field = _ref10$meta.field,
        indexA = _ref10$meta.indexA,
        indexB = _ref10$meta.indexB;
    var result = state;
    rootKeys.forEach(function (key) {
      var valueA = getIn(result, key + "." + field + "[" + indexA + "]");
      var valueB = getIn(result, key + "." + field + "[" + indexB + "]");

      if (valueA !== undefined || valueB !== undefined) {
        result = setIn(result, key + "." + field + "[" + indexA + "]", valueB);
        result = setIn(result, key + "." + field + "[" + indexB + "]", valueA);
      }
    });
    return result;
  }, _behaviors[ARRAY_UNSHIFT] = function (state, _ref11) {
    var field = _ref11.meta.field,
        payload = _ref11.payload;
    return arraySplice(state, field, 0, 0, payload);
  }, _behaviors[AUTOFILL] = function (state, _ref12) {
    var field = _ref12.meta.field,
        payload = _ref12.payload;
    var result = state;
    result = deleteInWithCleanUp(result, "asyncErrors." + field);
    result = deleteInWithCleanUp(result, "submitErrors." + field);
    result = setIn(result, "fields." + field + ".autofilled", true);
    result = setIn(result, "values." + field, payload);
    return result;
  }, _behaviors[BLUR] = function (state, _ref13) {
    var _ref13$meta = _ref13.meta,
        field = _ref13$meta.field,
        touch = _ref13$meta.touch,
        payload = _ref13.payload;
    var result = state;
    var initial = getIn(result, "initial." + field);

    if (initial === undefined && payload === '') {
      result = deleteInWithCleanUp(result, "values." + field);
    } else if (payload !== undefined) {
      result = setIn(result, "values." + field, payload);
    }

    if (field === getIn(result, 'active')) {
      result = deleteIn(result, 'active');
    }

    result = deleteIn(result, "fields." + field + ".active");

    if (touch) {
      result = setIn(result, "fields." + field + ".touched", true);
      result = setIn(result, 'anyTouched', true);
    }

    return result;
  }, _behaviors[CHANGE] = function (state, _ref14) {
    var _ref14$meta = _ref14.meta,
        field = _ref14$meta.field,
        touch = _ref14$meta.touch,
        persistentSubmitErrors = _ref14$meta.persistentSubmitErrors,
        payload = _ref14.payload;
    var result = state;
    var initial = getIn(result, "initial." + field);

    if (initial === undefined && payload === '' || payload === undefined) {
      result = deleteInWithCleanUp(result, "values." + field);
    } else if (_isFunction(payload)) {
      var fieldCurrentValue = getIn(state, "values." + field);
      result = setIn(result, "values." + field, payload(fieldCurrentValue, state.values));
    } else {
      result = setIn(result, "values." + field, payload);
    }

    result = deleteInWithCleanUp(result, "asyncErrors." + field);

    if (!persistentSubmitErrors) {
      result = deleteInWithCleanUp(result, "submitErrors." + field);
    }

    result = deleteInWithCleanUp(result, "fields." + field + ".autofilled");

    if (touch) {
      result = setIn(result, "fields." + field + ".touched", true);
      result = setIn(result, 'anyTouched', true);
    }

    return result;
  }, _behaviors[CLEAR_SUBMIT] = function (state) {
    return deleteIn(state, 'triggerSubmit');
  }, _behaviors[CLEAR_SUBMIT_ERRORS] = function (state) {
    var result = state;
    result = deleteInWithCleanUp(result, 'submitErrors');
    result = deleteIn(result, 'error');
    return result;
  }, _behaviors[CLEAR_ASYNC_ERROR] = function (state, _ref15) {
    var field = _ref15.meta.field;
    return deleteIn(state, "asyncErrors." + field);
  }, _behaviors[CLEAR_FIELDS] = function (state, _ref16) {
    var _ref16$meta = _ref16.meta,
        keepTouched = _ref16$meta.keepTouched,
        persistentSubmitErrors = _ref16$meta.persistentSubmitErrors,
        fields = _ref16$meta.fields;
    var result = state;
    fields.forEach(function (field) {
      result = deleteInWithCleanUp(result, "asyncErrors." + field);

      if (!persistentSubmitErrors) {
        result = deleteInWithCleanUp(result, "submitErrors." + field);
      }

      result = deleteInWithCleanUp(result, "fields." + field + ".autofilled");

      if (!keepTouched) {
        result = deleteIn(result, "fields." + field + ".touched");
      }

      var values = getIn(state, "initial." + field);
      result = values ? setIn(result, "values." + field, values) : deleteInWithCleanUp(result, "values." + field);
    });
    var anyTouched = some(keys(getIn(result, 'registeredFields')), function (key) {
      return getIn(result, "fields." + key + ".touched");
    });
    result = anyTouched ? setIn(result, 'anyTouched', true) : deleteIn(result, 'anyTouched');
    return result;
  }, _behaviors[FOCUS] = function (state, _ref17) {
    var field = _ref17.meta.field;
    var result = state;
    var previouslyActive = getIn(state, 'active');
    result = deleteIn(result, "fields." + previouslyActive + ".active");
    result = setIn(result, "fields." + field + ".visited", true);
    result = setIn(result, "fields." + field + ".active", true);
    result = setIn(result, 'active', field);
    return result;
  }, _behaviors[INITIALIZE] = function (state, _ref18) {
    var payload = _ref18.payload,
        _ref18$meta = _ref18.meta,
        keepDirty = _ref18$meta.keepDirty,
        keepSubmitSucceeded = _ref18$meta.keepSubmitSucceeded,
        updateUnregisteredFields = _ref18$meta.updateUnregisteredFields,
        keepValues = _ref18$meta.keepValues;
    var mapData = fromJS(payload);
    var result = empty; // clean all field state
    // persist old warnings, they will get recalculated if the new form values are different from the old values

    var warning = getIn(state, 'warning');

    if (warning) {
      result = setIn(result, 'warning', warning);
    }

    var syncWarnings = getIn(state, 'syncWarnings');

    if (syncWarnings) {
      result = setIn(result, 'syncWarnings', syncWarnings);
    } // persist old errors, they will get recalculated if the new form values are different from the old values


    var error = getIn(state, 'error');

    if (error) {
      result = setIn(result, 'error', error);
    }

    var syncErrors = getIn(state, 'syncErrors');

    if (syncErrors) {
      result = setIn(result, 'syncErrors', syncErrors);
    }

    var registeredFields = getIn(state, 'registeredFields');

    if (registeredFields) {
      result = setIn(result, 'registeredFields', registeredFields);
    }

    var previousValues = getIn(state, 'values');
    var previousInitialValues = getIn(state, 'initial');
    var newInitialValues = mapData;
    var newValues = previousValues;

    if (keepDirty && registeredFields) {
      if (!deepEqual(newInitialValues, previousInitialValues)) {
        //
        // Keep the value of dirty fields while updating the value of
        // pristine fields. This way, apps can reinitialize forms while
        // avoiding stomping on user edits.
        //
        // Note 1: The initialize action replaces all initial values
        // regardless of keepDirty.
        //
        // Note 2: When a field is dirty, keepDirty is enabled, and the field
        // value is the same as the new initial value for the field, the
        // initialize action causes the field to become pristine. That effect
        // is what we want.
        //
        var overwritePristineValue = function overwritePristineValue(name) {
          var previousInitialValue = getIn(previousInitialValues, name);
          var previousValue = getIn(previousValues, name);

          if (deepEqual(previousValue, previousInitialValue)) {
            // Overwrite the old pristine value with the new pristine value
            var newInitialValue = getIn(newInitialValues, name); // This check prevents any 'setIn' call that would create useless
            // nested objects, since the path to the new field value would
            // evaluate to the same (especially for undefined values)

            if (getIn(newValues, name) !== newInitialValue) {
              newValues = setIn(newValues, name, newInitialValue);
            }
          }
        };

        if (!updateUnregisteredFields) {
          forEach(keys(registeredFields), function (name) {
            return overwritePristineValue(name);
          });
        }

        forEach(keys(newInitialValues), function (name) {
          var previousInitialValue = getIn(previousInitialValues, name);

          if (typeof previousInitialValue === 'undefined') {
            // Add new values at the root level.
            var newInitialValue = getIn(newInitialValues, name);
            newValues = setIn(newValues, name, newInitialValue);
          }

          if (updateUnregisteredFields) {
            overwritePristineValue(name);
          }
        });
      }
    } else {
      newValues = newInitialValues;
    }

    if (keepValues) {
      forEach(keys(previousValues), function (name) {
        var previousValue = getIn(previousValues, name);
        newValues = setIn(newValues, name, previousValue);
      });
      forEach(keys(previousInitialValues), function (name) {
        var previousInitialValue = getIn(previousInitialValues, name);
        newInitialValues = setIn(newInitialValues, name, previousInitialValue);
      });
    }

    if (keepSubmitSucceeded && getIn(state, 'submitSucceeded')) {
      result = setIn(result, 'submitSucceeded', true);
    }

    result = setIn(result, 'values', newValues);
    result = setIn(result, 'initial', newInitialValues);
    return result;
  }, _behaviors[REGISTER_FIELD] = function (state, _ref19) {
    var _ref19$payload = _ref19.payload,
        name = _ref19$payload.name,
        type = _ref19$payload.type;
    var key = "registeredFields['" + name + "']";
    var field = getIn(state, key);

    if (field) {
      var count = getIn(field, 'count') + 1;
      field = setIn(field, 'count', count);
    } else {
      field = fromJS({
        name: name,
        type: type,
        count: 1
      });
    }

    return setIn(state, key, field);
  }, _behaviors[RESET] = function (state) {
    var result = empty;
    var registeredFields = getIn(state, 'registeredFields');

    if (registeredFields) {
      result = setIn(result, 'registeredFields', registeredFields);
    }

    var values = getIn(state, 'initial');

    if (values) {
      result = setIn(result, 'values', values);
      result = setIn(result, 'initial', values);
    }

    return result;
  }, _behaviors[RESET_SECTION] = function (state, _ref20) {
    var sections = _ref20.meta.sections;
    var result = state;
    sections.forEach(function (section) {
      result = deleteInWithCleanUp(result, "asyncErrors." + section);
      result = deleteInWithCleanUp(result, "submitErrors." + section);
      result = deleteInWithCleanUp(result, "fields." + section);
      var values = getIn(state, "initial." + section);
      result = values ? setIn(result, "values." + section, values) : deleteInWithCleanUp(result, "values." + section);
    });
    var anyTouched = some(keys(getIn(result, 'registeredFields')), function (key) {
      return getIn(result, "fields." + key + ".touched");
    });
    result = anyTouched ? setIn(result, 'anyTouched', true) : deleteIn(result, 'anyTouched');
    return result;
  }, _behaviors[SUBMIT] = function (state) {
    return setIn(state, 'triggerSubmit', true);
  }, _behaviors[START_ASYNC_VALIDATION] = function (state, _ref21) {
    var field = _ref21.meta.field;
    return setIn(state, 'asyncValidating', field || true);
  }, _behaviors[START_SUBMIT] = function (state) {
    return setIn(state, 'submitting', true);
  }, _behaviors[STOP_ASYNC_VALIDATION] = function (state, _ref22) {
    var payload = _ref22.payload;
    var result = state;
    result = deleteIn(result, 'asyncValidating');

    if (payload && Object.keys(payload).length) {
      var _error = payload._error,
          fieldErrors = _objectWithoutPropertiesLoose(payload, ["_error"]);

      if (_error) {
        result = setIn(result, 'error', _error);
      }

      if (Object.keys(fieldErrors).length) {
        result = setIn(result, 'asyncErrors', fromJS(fieldErrors));
      }
    } else {
      result = deleteIn(result, 'error');
      result = deleteIn(result, 'asyncErrors');
    }

    return result;
  }, _behaviors[STOP_SUBMIT] = function (state, _ref23) {
    var payload = _ref23.payload;
    var result = state;
    result = deleteIn(result, 'submitting');
    result = deleteIn(result, 'submitFailed');
    result = deleteIn(result, 'submitSucceeded');

    if (payload && Object.keys(payload).length) {
      var _error = payload._error,
          fieldErrors = _objectWithoutPropertiesLoose(payload, ["_error"]);

      if (_error) {
        result = setIn(result, 'error', _error);
      } else {
        result = deleteIn(result, 'error');
      }

      if (Object.keys(fieldErrors).length) {
        result = setIn(result, 'submitErrors', fromJS(fieldErrors));
      } else {
        result = deleteIn(result, 'submitErrors');
      }

      result = setIn(result, 'submitFailed', true);
    } else {
      result = deleteIn(result, 'error');
      result = deleteIn(result, 'submitErrors');
    }

    return result;
  }, _behaviors[SET_SUBMIT_FAILED] = function (state, _ref24) {
    var fields = _ref24.meta.fields;
    var result = state;
    result = setIn(result, 'submitFailed', true);
    result = deleteIn(result, 'submitSucceeded');
    result = deleteIn(result, 'submitting');
    fields.forEach(function (field) {
      return result = setIn(result, "fields." + field + ".touched", true);
    });

    if (fields.length) {
      result = setIn(result, 'anyTouched', true);
    }

    return result;
  }, _behaviors[SET_SUBMIT_SUCCEEDED] = function (state) {
    var result = state;
    result = deleteIn(result, 'submitFailed');
    result = setIn(result, 'submitSucceeded', true);
    return result;
  }, _behaviors[TOUCH] = function (state, _ref25) {
    var fields = _ref25.meta.fields;
    var result = state;
    fields.forEach(function (field) {
      return result = setIn(result, "fields." + field + ".touched", true);
    });
    result = setIn(result, 'anyTouched', true);
    return result;
  }, _behaviors[UNREGISTER_FIELD] = function (state, _ref26) {
    var _ref26$payload = _ref26.payload,
        name = _ref26$payload.name,
        destroyOnUnmount = _ref26$payload.destroyOnUnmount;
    var result = state;
    var key = "registeredFields['" + name + "']";
    var field = getIn(result, key);

    if (!field) {
      return result;
    }

    var count = getIn(field, 'count') - 1;

    if (count <= 0 && destroyOnUnmount) {
      // Note: Cannot use deleteWithCleanUp here because of the flat nature of registeredFields
      result = deleteIn(result, key);

      if (deepEqual(getIn(result, 'registeredFields'), empty)) {
        result = deleteIn(result, 'registeredFields');
      }

      var syncErrors = getIn(result, 'syncErrors');

      if (syncErrors) {
        syncErrors = plainDeleteInWithCleanUp(syncErrors, name);

        if (plain.deepEqual(syncErrors, plain.empty)) {
          result = deleteIn(result, 'syncErrors');
        } else {
          result = setIn(result, 'syncErrors', syncErrors);
        }
      }

      var syncWarnings = getIn(result, 'syncWarnings');

      if (syncWarnings) {
        syncWarnings = plainDeleteInWithCleanUp(syncWarnings, name);

        if (plain.deepEqual(syncWarnings, plain.empty)) {
          result = deleteIn(result, 'syncWarnings');
        } else {
          result = setIn(result, 'syncWarnings', syncWarnings);
        }
      }

      result = deleteInWithCleanUp(result, "submitErrors." + name);
      result = deleteInWithCleanUp(result, "asyncErrors." + name);
    } else {
      field = setIn(field, 'count', count);
      result = setIn(result, key, field);
    }

    return result;
  }, _behaviors[UNTOUCH] = function (state, _ref27) {
    var fields = _ref27.meta.fields;
    var result = state;
    fields.forEach(function (field) {
      return result = deleteIn(result, "fields." + field + ".touched");
    });
    var anyTouched = some(keys(getIn(result, 'registeredFields')), function (key) {
      return getIn(result, "fields." + key + ".touched");
    });
    result = anyTouched ? setIn(result, 'anyTouched', true) : deleteIn(result, 'anyTouched');
    return result;
  }, _behaviors[UPDATE_SYNC_ERRORS] = function (state, _ref28) {
    var _ref28$payload = _ref28.payload,
        syncErrors = _ref28$payload.syncErrors,
        error = _ref28$payload.error;
    var result = state;

    if (error) {
      result = setIn(result, 'error', error);
      result = setIn(result, 'syncError', true);
    } else {
      result = deleteIn(result, 'error');
      result = deleteIn(result, 'syncError');
    }

    if (Object.keys(syncErrors).length) {
      result = setIn(result, 'syncErrors', syncErrors);
    } else {
      result = deleteIn(result, 'syncErrors');
    }

    return result;
  }, _behaviors[UPDATE_SYNC_WARNINGS] = function (state, _ref29) {
    var _ref29$payload = _ref29.payload,
        syncWarnings = _ref29$payload.syncWarnings,
        warning = _ref29$payload.warning;
    var result = state;

    if (warning) {
      result = setIn(result, 'warning', warning);
    } else {
      result = deleteIn(result, 'warning');
    }

    if (Object.keys(syncWarnings).length) {
      result = setIn(result, 'syncWarnings', syncWarnings);
    } else {
      result = deleteIn(result, 'syncWarnings');
    }

    return result;
  }, _behaviors);

  var reducer = function reducer(state, action) {
    if (state === void 0) {
      state = empty;
    }

    var behavior = behaviors[action.type];
    return behavior ? behavior(state, action) : state;
  };

  var byForm = function byForm(reducer) {
    return function (state, action) {
      if (state === void 0) {
        state = empty;
      }

      if (action === void 0) {
        action = {
          type: 'NONE'
        };
      }

      var form = action && action.meta && action.meta.form;

      if (!form || !isReduxFormAction(action)) {
        return state;
      }

      if (action.type === DESTROY && action.meta && action.meta.form) {
        return action.meta.form.reduce(function (result, form) {
          return deleteInWithCleanUp(result, form);
        }, state);
      }

      var formState = getIn(state, form);
      var result = reducer(formState, action);
      return result === formState ? state : setIn(state, form, result);
    };
  };
  /**
   * Adds additional functionality to the reducer
   */


  function decorate(target) {
    target.plugin = function (reducers, config) {
      var _this = this;

      if (config === void 0) {
        config = {};
      }

      // use 'function' keyword to enable 'this'
      return decorate(function (state, action) {
        if (state === void 0) {
          state = empty;
        }

        if (action === void 0) {
          action = {
            type: 'NONE'
          };
        }

        var callPlugin = function callPlugin(processed, key) {
          var previousState = getIn(processed, key);
          var nextState = reducers[key](previousState, action, getIn(state, key));
          return nextState !== previousState ? setIn(processed, key, nextState) : processed;
        };

        var processed = _this(state, action); // run through redux-form reducer


        var form = action && action.meta && action.meta.form;

        if (form && !config.receiveAllFormActions) {
          // this is an action aimed at forms, so only give it to the specified form's plugin
          return reducers[form] ? callPlugin(processed, form) : processed;
        } else {
          // this is not a form-specific action, so send it to all the plugins
          return Object.keys(reducers).reduce(callPlugin, processed);
        }
      });
    };

    return target;
  }

  return decorate(byForm(reducer));
}

export default createReducer;