@babel/helper-remap-async-to-generator/lib/index.js

"use strict";

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

var _helperWrapFunction = _interopRequireDefault(require("@babel/helper-wrap-function"));

var _helperAnnotateAsPure = _interopRequireDefault(require("@babel/helper-annotate-as-pure"));

var t = _interopRequireWildcard(require("@babel/types"));

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

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

const awaitVisitor = {
  Function(path) {
    path.skip();
  },

  AwaitExpression(path, {
    wrapAwait
  }) {
    const argument = path.get("argument");

    if (path.parentPath.isYieldExpression()) {
      path.replaceWith(argument.node);
      return;
    }

    path.replaceWith(t.yieldExpression(wrapAwait ? t.callExpression(t.cloneNode(wrapAwait), [argument.node]) : argument.node));
  }

};

function _default(path, helpers) {
  path.traverse(awaitVisitor, {
    wrapAwait: helpers.wrapAwait
  });
  const isIIFE = checkIsIIFE(path);
  path.node.async = false;
  path.node.generator = true;
  (0, _helperWrapFunction.default)(path, t.cloneNode(helpers.wrapAsync));
  const isProperty = path.isObjectMethod() || path.isClassMethod() || path.parentPath.isObjectProperty() || path.parentPath.isClassProperty();

  if (!isProperty && !isIIFE && path.isExpression()) {
    (0, _helperAnnotateAsPure.default)(path);
  }

  function checkIsIIFE(path) {
    if (path.parentPath.isCallExpression({
      callee: path.node
    })) {
      return true;
    }

    const {
      parentPath
    } = path;

    if (parentPath.isMemberExpression() && t.isIdentifier(parentPath.node.property, {
      name: "bind"
    })) {
      const {
        parentPath: bindCall
      } = parentPath;
      return bindCall.isCallExpression() && bindCall.node.arguments.length === 1 && t.isThisExpression(bindCall.node.arguments[0]) && bindCall.parentPath.isCallExpression({
        callee: bindCall.node
      });
    }

    return false;
  }
}