.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/internals/async-iterator-create-proxy.js

   1 'use strict';
   2 var call = require('../internals/function-call');
   3 var aCallable = require('../internals/a-callable');
   4 var anObject = require('../internals/an-object');
   5 var create = require('../internals/object-create');
   6 var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
   7 var redefineAll = require('../internals/redefine-all');
   8 var wellKnownSymbol = require('../internals/well-known-symbol');
   9 var InternalStateModule = require('../internals/internal-state');
  10 var getBuiltIn = require('../internals/get-built-in');
  11 var getMethod = require('../internals/get-method');
  12 var AsyncIteratorPrototype = require('../internals/async-iterator-prototype');
  13
  14 var Promise = getBuiltIn('Promise');
  15
  16 var setInternalState = InternalStateModule.set;
  17 var getInternalState = InternalStateModule.get;
  18
  19 var TO_STRING_TAG = wellKnownSymbol('toStringTag');
  20
  21 module.exports = function (nextHandler, IS_ITERATOR) {
  22   var AsyncIteratorProxy = function AsyncIterator(state) {
  23     state.next = aCallable(state.iterator.next);
  24     state.done = false;
  25     state.ignoreArgument = !IS_ITERATOR;
  26     setInternalState(this, state);
  27   };
  28
  29   AsyncIteratorProxy.prototype = redefineAll(create(AsyncIteratorPrototype), {
  30     next: function next(arg) {
  31       var that = this;
  32       var hasArgument = !!arguments.length;
  33       return new Promise(function (resolve) {
  34         var state = getInternalState(that);
  35         var args = hasArgument ? [state.ignoreArgument ? undefined : arg] : IS_ITERATOR ? [] : [undefined];
  36         state.ignoreArgument = false;
  37         resolve(state.done ? { done: true, value: undefined } : anObject(call(nextHandler, state, Promise, args)));
  38       });
  39     },
  40     'return': function (value) {
  41       var that = this;
  42       return new Promise(function (resolve, reject) {
  43         var state = getInternalState(that);
  44         var iterator = state.iterator;
  45         state.done = true;
  46         var $$return = getMethod(iterator, 'return');
  47         if ($$return === undefined) return resolve({ done: true, value: value });
  48         Promise.resolve(call($$return, iterator, value)).then(function (result) {
  49           anObject(result);
  50           resolve({ done: true, value: value });
  51         }, reject);
  52       });
  53     },
  54     'throw': function (value) {
  55       var that = this;
  56       return new Promise(function (resolve, reject) {
  57         var state = getInternalState(that);
  58         var iterator = state.iterator;
  59         state.done = true;
  60         var $$throw = getMethod(iterator, 'throw');
  61         if ($$throw === undefined) return reject(value);
  62         resolve(call($$throw, iterator, value));
  63       });
  64     }
  65   });
  66
  67   if (!IS_ITERATOR) {
  68     createNonEnumerableProperty(AsyncIteratorProxy.prototype, TO_STRING_TAG, 'Generator');
  69   }
  70
  71   return AsyncIteratorProxy;
  72 };