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node_modules/core-js/internals/async-iterator-iteration.js

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+'use strict';
+// https://github.com/tc39/proposal-iterator-helpers
+// https://github.com/tc39/proposal-array-from-async
+var call = require('../internals/function-call');
+var aCallable = require('../internals/a-callable');
+var anObject = require('../internals/an-object');
+var isObject = require('../internals/is-object');
+var doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');
+var getBuiltIn = require('../internals/get-built-in');
+var getIteratorDirect = require('../internals/get-iterator-direct');
+var closeAsyncIteration = require('../internals/async-iterator-close');
+
+var createMethod = function (TYPE) {
+  var IS_TO_ARRAY = TYPE == 0;
+  var IS_FOR_EACH = TYPE == 1;
+  var IS_EVERY = TYPE == 2;
+  var IS_SOME = TYPE == 3;
+  return function (object, fn, target) {
+    anObject(object);
+    var MAPPING = fn !== undefined;
+    if (MAPPING || !IS_TO_ARRAY) aCallable(fn);
+    var record = getIteratorDirect(object);
+    var Promise = getBuiltIn('Promise');
+    var iterator = record.iterator;
+    var next = record.next;
+    var counter = 0;
+
+    return new Promise(function (resolve, reject) {
+      var ifAbruptCloseAsyncIterator = function (error) {
+        closeAsyncIteration(iterator, reject, error, reject);
+      };
+
+      var loop = function () {
+        try {
+          if (MAPPING) try {
+            doesNotExceedSafeInteger(counter);
+          } catch (error5) { ifAbruptCloseAsyncIterator(error5); }
+          Promise.resolve(anObject(call(next, iterator))).then(function (step) {
+            try {
+              if (anObject(step).done) {
+                if (IS_TO_ARRAY) {
+                  target.length = counter;
+                  resolve(target);
+                } else resolve(IS_SOME ? false : IS_EVERY || undefined);
+              } else {
+                var value = step.value;
+                try {
+                  if (MAPPING) {
+                    var result = fn(value, counter);
+
+                    var handler = function ($result) {
+                      if (IS_FOR_EACH) {
+                        loop();
+                      } else if (IS_EVERY) {
+                        $result ? loop() : closeAsyncIteration(iterator, resolve, false, reject);
+                      } else if (IS_TO_ARRAY) {
+                        try {
+                          target[counter++] = $result;
+                          loop();
+                        } catch (error4) { ifAbruptCloseAsyncIterator(error4); }
+                      } else {
+                        $result ? closeAsyncIteration(iterator, resolve, IS_SOME || value, reject) : loop();
+                      }
+                    };
+
+                    if (isObject(result)) Promise.resolve(result).then(handler, ifAbruptCloseAsyncIterator);
+                    else handler(result);
+                  } else {
+                    target[counter++] = value;
+                    loop();
+                  }
+                } catch (error3) { ifAbruptCloseAsyncIterator(error3); }
+              }
+            } catch (error2) { reject(error2); }
+          }, reject);
+        } catch (error) { reject(error); }
+      };
+
+      loop();
+    });
+  };
+};
+
+module.exports = {
+  toArray: createMethod(0),
+  forEach: createMethod(1),
+  every: createMethod(2),
+  some: createMethod(3),
+  find: createMethod(4)
+};