@mariusandra/simmerjs/lib/convertSelectorStateIntoCSSSelector.js

A pure Javascript reverse CSS selector engine which calculates a DOM element's unique CSS selector on the current page.

"use strict";

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

var _lodash = _interopRequireDefault(require("lodash.takeright"));

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

/**
   * Conver the Selector State into a merged CSS selector
   * @param state (object) The current selector state (has the stack and specificity sum)
   * @param depth (int) The number of levels to merge (1..state.stack.length)
   */
function _default(state) {
  let depth = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : state.stack.length;
  return (0, _lodash.default)(state.stack.reduceRight((selectorSegments, elementState) => {
    if (elementState.length) {
      selectorSegments.push(elementState.join(''));
    } else if (selectorSegments.length) {
      selectorSegments.push('*');
    }

    return selectorSegments;
  }, []), depth).join(' > ') || '*';
}