leagueofcomicgeeks/src/utils/optional-options.js

Unofficial Node.js library for interacting with League of Comic Geeks

const _ = require('lodash');
const types = require('./types');

module.exports = function (wrappedFunction) {
  return function (...args) {
    const argsCount = args.length;
    const lastArg = args[argsCount - 1];
    const penultimateArg = args[argsCount - 2];

    if (!_.isObject(penultimateArg) && _.isFunction(lastArg)) {
      const defaultedOptions = { type: types.ISSUE };
      args.splice(argsCount - 1, 0, defaultedOptions);
    }

    if (_.isObject(penultimateArg) && _.isFunction(lastArg) && _.isUndefined(penultimateArg.type)) {
      penultimateArg.type = types.ISSUE;
    }

    return wrappedFunction(...args);
  };
};