moltres-utils/dist/data/getProp.js

Utils for Moltres apps

"use strict";

require("core-js/modules/es6.object.define-property");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _curry = _interopRequireDefault(require("../common/curry"));

var _defn = _interopRequireDefault(require("../common/defn"));

var _isFunction = _interopRequireDefault(require("../lang/isFunction"));

var _isNil = _interopRequireDefault(require("../lang/isNil"));

var _isUndefined = _interopRequireDefault(require("../lang/isUndefined"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Returns a function that when supplied an object returns the indicated  property of that object, if it exists.
 *
 * @function
 * @since v0.0.3
 * @alias prop
 * @category data
 * @sig s -> {s: a} -> a | Undefined
 * @param {string|number|Function} prop The property name or property selector
 * @param {Object} value The value to query
 * @returns {*} The value at the given property
 * @example
 *
 * getProp('x', {x: 100}) //=> 100
 * getProp('x', {})       //=> undefined
 * getProp(undefined, {})  //=> {}
 * getProp(1, ['foo', 'bar'])  //=> 'bar'
 * getProp((value) => value[0], ['foo', 'bar'])  //=> 'foo'
 * getProp('foo', {
 *   foo: 'bar',
 *   get(prop) { return this[prop] }
 * }) //=> 'bar'
 */
var getProp = (0, _curry.default)((0, _defn.default)('getProp', function (prop, value) {
  if ((0, _isUndefined.default)(prop)) {
    return value;
  }

  if ((0, _isFunction.default)(prop)) {
    return prop(value);
  }

  if ((0, _isNil.default)(value)) {
    return undefined;
  }

  if ((0, _isFunction.default)(value.get)) {
    return value.get(prop);
  }

  return value[prop];
}));
var _default = getProp;
exports.default = _default;
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