How to use

concat

function

in

lodash

Promise.all(promises)
  .then(results => {
   const merged = concat(results[0], results[1])
   return getClientsFromAggregateResponse(merged)
  })

export default function (state = [], action) {
  switch (action.type) {
    case SELECT_POST:
      return concat(state, action.payload);
    case UNSELECT_POST:
      return remove(state, id => id !== action.payload);
    default:
      return state;
  }
}

function idConcat(cardIds, cardId) {
  return concat(cardIds, cardId)
}

export function modelsFetchSucceeded(models) {
 const modelNumber = size(models.models) > 1 ? 'plural' : 'singular';

 const sections = storeData.getMenu() || map(models.models, (model) => ({icon: 'fa-caret-square-o-right', name: model.name, source: model.source }));

 if (!storeData.getMenu()){
  sections.push({ icon: 'fa-plus', name: 'button.contentType.add' });
 }

 const menu = {
  sections: [
   Map({
    name: `menu.section.contentTypeBuilder.name.${modelNumber}`,
    items: List(sections),
   }),
  ],
 };

 const data = storeData.getModel() ? { models: concat(models.models, storeData.getModel()) } : models;
 return {
  type: MODELS_FETCH_SUCCEEDED,
  data,
  menu,
 };
}

export function setAttributeForm(hash) {
 const data = setAttributeFormData(hash);
 const attributeRelation = Map({
  name: '',
  params: Map({
   columnName: '',
   target: '',
   targetColumnName: "",
   key: '',
   nature: 'oneToOne',
   required: false,
   unique: false,
   dominant: false,
  }),
 });
 const attribute = includes(hash, 'attributerelation') ? attributeRelation : data.attribute;
 const formValidations = concat(getValidationsFromForm(data.form, []), { name: 'name', validations: { required: true } });

 return {
  type: SET_ATTRIBUTE_FORM,
  form: data.form,
  attribute,
  formValidations,
 };
}

 attr.params.key !== '-' && attr.params.key === this.props.modifiedDataAttribute.params.key && attr.params.target === this.props.modifiedDataAttribute.params.target);
const sameParamsKeyAndName = filter(this.props.contentTypeData.attributes, (attr) => attr.name === this.props.modifiedDataAttribute.params.key);
const formErrors = concat(errors, hasNestedValue(this.props.modifiedDataAttribute));
const isEditingParamsKey = this.props.modifiedDataAttribute.params.key !== get(this.props.contentTypeData.attributes, [attributeIndex, 'params', 'key']);

    ...state,
    collection: concat(state.collection, action.payload.articles),
    total: action.payload.totalResults,
    isFetching: false,
  return {
    ...state,
    bookmarkedCardTitles: concat(state.bookmarkedCardTitles, action.payload.cardTitle),
  };
case BOOKMARK_CARD_REQUESTED: