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node_modules/babel-helper-hoist-variables/lib/index.js 2.05 KB
6a9ffbcc   liuqimichale   地图点击事件
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  "use strict";
  
  exports.__esModule = true;
  
  var _getIterator2 = require("babel-runtime/core-js/get-iterator");
  
  var _getIterator3 = _interopRequireDefault(_getIterator2);
  
  exports.default = function (path, emit) {
    var kind = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : "var";
  
    path.traverse(visitor, { kind: kind, emit: emit });
  };
  
  var _babelTypes = require("babel-types");
  
  var t = _interopRequireWildcard(_babelTypes);
  
  function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  var visitor = {
    Scope: function Scope(path, state) {
      if (state.kind === "let") path.skip();
    },
    Function: function Function(path) {
      path.skip();
    },
    VariableDeclaration: function VariableDeclaration(path, state) {
      if (state.kind && path.node.kind !== state.kind) return;
  
      var nodes = [];
  
      var declarations = path.get("declarations");
      var firstId = void 0;
  
      for (var _iterator = declarations, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
        var _ref;
  
        if (_isArray) {
          if (_i >= _iterator.length) break;
          _ref = _iterator[_i++];
        } else {
          _i = _iterator.next();
          if (_i.done) break;
          _ref = _i.value;
        }
  
        var declar = _ref;
  
        firstId = declar.node.id;
  
        if (declar.node.init) {
          nodes.push(t.expressionStatement(t.assignmentExpression("=", declar.node.id, declar.node.init)));
        }
  
        for (var name in declar.getBindingIdentifiers()) {
          state.emit(t.identifier(name), name);
        }
      }
  
      if (path.parentPath.isFor({ left: path.node })) {
        path.replaceWith(firstId);
      } else {
        path.replaceWithMultiple(nodes);
      }
    }
  };
  
  module.exports = exports["default"];