webpack-config-utils/dist/get-if-utils.js

Utilities to help your webpack config be easier to read

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getIfUtils = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _propIf = require('./prop-if');

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

exports.getIfUtils = getIfUtils;

/**
 * The object returned from getIfUtils
 * @typedef {Object} IfUtils
 * @property {function} ifProduction - a wrapper around `propIf` function that returns the given `value` if the
 * environment is `"production"` or the `alternate` if not
 * @property {function} ifNotProduction, - a wrapper around `propIf` function that returns the given `value` if the
 * environment is not `"production"` or the `alternate` if it is
 * @property {function} ifProd - a wrapper around `propIf` function that returns the given `value` if the environment is
 * `"prod"` or the `alternate` if not
 * @property {function} ifNotProd, - a wrapper around `propIf` function that returns the given `value` if the
 * environment is not `"prod"` or the `alternate` if it is
 * @property {function} ifTest - a wrapper around `propIf` function that returns the given `value` if the environment is
 * `"test"` or the `alternate` if not
 * @property {function} ifNotTest, - a wrapper around `propIf` function that returns the given `value` if the
 * environment is not `"test"` or the `alternate` if it is
 * @property {function} ifDevelopment - a wrapper around `propIf` function that returns the given `value` if the
 * environment is `"development"` or the `alternate` if not
 * @property {function} ifNotDevelopment, - a wrapper around `propIf` function that returns the given `value` if the
 * environment is not `"development"` or the `alternate` if it is
 * @property {function} ifDev - a wrapper around `propIf` function that returns the given `value` if the environment is
 * `"dev"` or the `alternate` if not
 * @property {function} ifNotDev, - a wrapper around `propIf` function that returns the given `value` if the
 * environment is not `"dev"` or the `alternate` if it is
 */

/**
 * This returns an object with methods to help you conditionally set values to your webpack configuration object.
 * @param  {Object|string} env This would be either the `env` object from webpack (function config API) or the value of
 * `process.env.NODE_ENV`.
 * @param  {Array} vars A list of valid environments if utils are generated for
 * @return {IfUtils} the IfUtils object for the given environment
 */

function getIfUtils(env) {
  var vars = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ['production', 'prod', 'test', 'development', 'dev'];

  env = typeof env === 'string' ? _defineProperty({}, env, true) : env;
  if ((typeof env === 'undefined' ? 'undefined' : _typeof(env)) !== 'object') {
    throw new Error('webpack-config-utils:getIfUtils: env passed should be a string/Object. Was ' + JSON.stringify(env));
  }
  return vars.reduce(function (utils, variable) {
    var envValue = !!env[variable];
    var capitalVariable = capitalizeWord(variable);
    utils['if' + capitalVariable] = function (value, alternate) {
      return isUndefined(value) ? envValue : (0, _propIf.propIf)(envValue, value, alternate);
    };
    utils['ifNot' + capitalVariable] = function (value, alternate) {
      return isUndefined(value) ? !envValue : (0, _propIf.propIfNot)(envValue, value, alternate);
    };
    return utils;
  }, {});
}

// utilities

function capitalizeWord(word) {
  return word.substring(0, 1).toUpperCase() + word.substring(1);
}

function isUndefined(val) {
  return typeof val === 'undefined';
}