Visible for testing\r\n */\r\nvar MAX_VALUE_MILLIS = 4 * 60 * 60 * 1000; // Four hours, like iOS and Android.\r\n/**\r\n * The percentage of backoff time to randomize by.\r\n * See\r\n * http://go/safe-client-behavior#step-1-determine-the-appropriate-retry-interval-to-handle-spike-traffic\r\n * for context.\r\n *\r\n *
Visible for testing\r\n */\r\nvar RANDOM_FACTOR = 0.5;\r\n/**\r\n * Based on the backoff method from\r\n * https://github.com/google/closure-library/blob/master/closure/goog/math/exponentialbackoff.js.\r\n * Extracted here so we don't need to pass metadata and a stateful ExponentialBackoff object around.\r\n */\r\nfunction calculateBackoffMillis(backoffCount, intervalMillis, backoffFactor) {\r\n if (intervalMillis === void 0) { intervalMillis = DEFAULT_INTERVAL_MILLIS; }\r\n if (backoffFactor === void 0) { backoffFactor = DEFAULT_BACKOFF_FACTOR; }\r\n // Calculates an exponentially increasing value.\r\n // Deviation: calculates value from count and a constant interval, so we only need to save value\r\n // and count to restore state.\r\n var currBaseValue = intervalMillis * Math.pow(backoffFactor, backoffCount);\r\n // A random \"fuzz\" to avoid waves of retries.\r\n // Deviation: randomFactor is required.\r\n var randomWait = Math.round(\r\n // A fraction of the backoff value to add/subtract.\r\n // Deviation: changes multiplication order to improve readability.\r\n RANDOM_FACTOR *\r\n currBaseValue *\r\n // A random float (rounded to int by Math.round above) in the range [-1, 1]. Determines\r\n // if we add or subtract.\r\n (Math.random() - 0.5) *\r\n 2);\r\n // Limits backoff to max to avoid effectively permanent backoff.\r\n return Math.min(MAX_VALUE_MILLIS, currBaseValue + randomWait);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Provide English ordinal letters after a number\r\n */\r\nfunction ordinal(i) {\r\n if (!Number.isFinite(i)) {\r\n return \"\" + i;\r\n }\r\n return i + indicator(i);\r\n}\r\nfunction indicator(i) {\r\n i = Math.abs(i);\r\n var cent = i % 100;\r\n if (cent >= 10 && cent <= 20) {\r\n return 'th';\r\n }\r\n var dec = i % 10;\r\n if (dec === 1) {\r\n return 'st';\r\n }\r\n if (dec === 2) {\r\n return 'nd';\r\n }\r\n if (dec === 3) {\r\n return 'rd';\r\n }\r\n return 'th';\r\n}\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction getModularInstance(service) {\r\n if (service && service._delegate) {\r\n return service._delegate;\r\n }\r\n else {\r\n return service;\r\n }\r\n}\n\nexport { CONSTANTS, Deferred, ErrorFactory, FirebaseError, MAX_VALUE_MILLIS, RANDOM_FACTOR, Sha1, areCookiesEnabled, assert, assertionError, async, base64, base64Decode, base64Encode, base64urlEncodeWithoutPadding, calculateBackoffMillis, contains, createMockUserToken, createSubscribe, decode, deepCopy, deepEqual, deepExtend, errorPrefix, extractQuerystring, getGlobal, getModularInstance, getUA, isAdmin, isBrowser, isBrowserExtension, isElectron, isEmpty, isIE, isIndexedDBAvailable, isMobileCordova, isNode, isNodeSdk, isReactNative, isSafari, isUWP, isValidFormat, isValidTimestamp, issuedAtTime, jsonEval, map, ordinal, querystring, querystringDecode, safeGet, stringLength, stringToByteArray, stringify, validateArgCount, validateCallback, validateContextObject, validateIndexedDBOpenable, validateNamespace };\n//# sourceMappingURL=index.esm.js.map\n"],"sourceRoot":""}