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Edit File: for-await.js

"use strict";

exports.__esModule = true;

exports.default = function (path, helpers) {
  var node = path.node,
      scope = path.scope,
      parent = path.parent;

var stepKey = scope.generateUidIdentifier("step");
  var stepValue = scope.generateUidIdentifier("value");
  var left = node.left;
  var declar = void 0;

if (t.isIdentifier(left) || t.isPattern(left) || t.isMemberExpression(left)) {
    declar = t.expressionStatement(t.assignmentExpression("=", left, stepValue));
  } else if (t.isVariableDeclaration(left)) {
    declar = t.variableDeclaration(left.kind, [t.variableDeclarator(left.declarations[0].id, stepValue)]);
  }

var template = buildForAwait();

(0, _babelTraverse2.default)(template, forAwaitVisitor, null, {
    ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"),
    ITERATOR_COMPLETION: scope.generateUidIdentifier("iteratorNormalCompletion"),
    ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"),
    ITERATOR_KEY: scope.generateUidIdentifier("iterator"),
    GET_ITERATOR: helpers.getAsyncIterator,
    OBJECT: node.right,
    STEP_VALUE: stepValue,
    STEP_KEY: stepKey,
    AWAIT: helpers.wrapAwait
  });

template = template.body.body;

var isLabeledParent = t.isLabeledStatement(parent);
  var tryBody = template[3].block.body;
  var loop = tryBody[0];

if (isLabeledParent) {
    tryBody[0] = t.labeledStatement(parent.label, loop);
  }

return {
    replaceParent: isLabeledParent,
    node: template,
    declar: declar,
    loop: loop
  };
};

var _babelTypes = require("babel-types");

var t = _interopRequireWildcard(_babelTypes);

var _babelTemplate = require("babel-template");

var _babelTemplate2 = _interopRequireDefault(_babelTemplate);

var _babelTraverse = require("babel-traverse");

var _babelTraverse2 = _interopRequireDefault(_babelTraverse);

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

var forAwaitVisitor = {
  noScope: true,

Identifier: function Identifier(path, replacements) {
    if (path.node.name in replacements) {
      path.replaceInline(replacements[path.node.name]);
    }
  },
  CallExpression: function CallExpression(path, replacements) {
    var callee = path.node.callee;

if (t.isIdentifier(callee) && callee.name === "AWAIT" && !replacements.AWAIT) {
      path.replaceWith(path.node.arguments[0]);
    }
  }
};

module.exports = exports["default"];

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