@cookbook/dot-notation/lib/pick.js

Object readings and complex transformations using dot notation syntax.

"use strict";

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

var _getArrayIndex = _interopRequireDefault(require("./utils/get-array-index"));

var _getKey3 = _interopRequireDefault(require("./utils/get-key"));

var _is = _interopRequireDefault(require("./utils/is"));

var _shallowCopy = _interopRequireDefault(require("./utils/shallow-copy"));

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

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

/**
 * Pick value at a given dot notation path
 * @template T
 * @param {Object.<string, unknown> | Object.<string, unknown[]} source
 * @param {string} path
 * @returns {T} value
 */
var pick = function pick(source, path) {
  if (_is.default.nullOrUndefined(path) || !path.trim()) {
    throw new SyntaxError("A dot notation path was expected, but instead got \"".concat(path, "\""));
  }

  var content = (0, _shallowCopy.default)(source); // eslint-disable-next-line prefer-const

  var _getKey = (0, _getKey3.default)(path),
      _getKey2 = _slicedToArray(_getKey, 2),
      key = _getKey2[0],
      remainingPath = _getKey2[1];

  var hasArrayNotation = (0, _getArrayIndex.default)(key.toString());

  if (hasArrayNotation) {
    var idx = hasArrayNotation[1];

    if (!idx) {
      throw new SyntaxError("An array index was expected but nothing was found at \"".concat(path, "\""));
    }

    if (Number.isNaN(+idx)) {
      throw new TypeError("Array index must a positive integer \"".concat(idx, "\""));
    }

    if (+idx < 0) {
      throw new RangeError("Array index must be equal or greater than 0, but instead got \"".concat(idx, "\""));
    } // replace key with array index value


    key = +idx;
  }

  if (!remainingPath || _is.default.nullOrUndefined(content[key])) {
    return content[key];
  }

  return pick(content[key], remainingPath);
};

var _default = pick;
exports.default = _default;