@trade-quorum/tq-helpers/src/array-helpers.js

Various common helpers for Trade Quorum API/App

const _ = require('lodash');

exports.keysValuesToString = (keys, values) => {
  if (!keys || !values || keys.length !== values.length)
    throw new Error(
      'Keys and values should be provided and have the same size'
    );
  let string = '';
  for (let i = 0; i < keys.length; i++) {
    if (i !== 0) string += ', ';
    string += `${keys[i]} = ${values[i]}`;
  }
  return string;
};

exports.findWhere = (objects, query) => _.find(objects, _.matches(query));

exports.findIndexWhere = (objects, query) =>
  _.findIndex(objects, _.matches(query));

exports.hasWhere = (objects, query) => !!exports.findWhere(objects, query);

exports.filterWhere = (objects, query) => _.filter(objects, _.matches(query));

exports.findWhereOrError = (objects, query, objectType) => {
  const object = exports.findWhere(objects, query);
  if (!object)
    throw new Error(`${objectType} ${JSON.stringify(query)} not found`);
  return object;
};

exports.uniq = (objects) => _.uniq(objects.map(JSON.stringify)).map(JSON.parse);

exports.cloneAndReplace = (array, index, value) => {
  const newArray = [...array];
  newArray[index] = value;
  return newArray;
};