orionsoft-react-scripts/node_modules/babel-plugin-transform-object-rest-spread/lib/index.js

Orionsoft Configuration and scripts for Create React App.

"use strict";

exports.__esModule = true;

var _getIterator2 = require("babel-runtime/core-js/get-iterator");

var _getIterator3 = _interopRequireDefault(_getIterator2);

exports.default = function (_ref) {
  var t = _ref.types;

  function hasSpread(node) {
    for (var _iterator = node.properties, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
      var _ref2;

      if (_isArray) {
        if (_i >= _iterator.length) break;
        _ref2 = _iterator[_i++];
      } else {
        _i = _iterator.next();
        if (_i.done) break;
        _ref2 = _i.value;
      }

      var prop = _ref2;

      if (t.isSpreadProperty(prop)) {
        return true;
      }
    }
    return false;
  }

  return {
    inherits: require("babel-plugin-syntax-object-rest-spread"),

    visitor: {
      ObjectExpression: function ObjectExpression(path, file) {
        if (!hasSpread(path.node)) return;

        var useBuiltIns = file.opts.useBuiltIns || false;
        if (typeof useBuiltIns !== "boolean") {
          throw new Error("transform-object-rest-spread currently only accepts a boolean option for useBuiltIns (defaults to false)");
        }

        var args = [];
        var props = [];

        function push() {
          if (!props.length) return;
          args.push(t.objectExpression(props));
          props = [];
        }

        for (var _iterator2 = path.node.properties, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
          var _ref3;

          if (_isArray2) {
            if (_i2 >= _iterator2.length) break;
            _ref3 = _iterator2[_i2++];
          } else {
            _i2 = _iterator2.next();
            if (_i2.done) break;
            _ref3 = _i2.value;
          }

          var prop = _ref3;

          if (t.isSpreadProperty(prop)) {
            push();
            args.push(prop.argument);
          } else {
            props.push(prop);
          }
        }

        push();

        if (!t.isObjectExpression(args[0])) {
          args.unshift(t.objectExpression([]));
        }

        var helper = useBuiltIns ? t.memberExpression(t.identifier("Object"), t.identifier("assign")) : file.addHelper("extends");

        path.replaceWith(t.callExpression(helper, args));
      }
    }
  };
};

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

module.exports = exports["default"];